LightSpeed Technologies Stereo System CAT 860 User Manual
CAT 860  
Classroom Audio System  
U s e r M a n u a l  
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TABLE OF CONTENTS  
SECTION 1:  
Overview  
6
8
Important Safety Instructions  
System Components and Unpacking  
10 Optional Components  
11 CAT 860 Front Panel Controls  
12 CAT 860 Rear Panel Controls  
13 Infrared Sensor / Receiver (ISR) Connections  
14 REDMIKE Controls and Connections  
15 Cradle Charger Controls and Connections  
SECTION 2:  
Set-up & Use  
16 Step 1. Location of the Amplifier  
17 Step 2. IR Sensor / Receiver (ISR) Installation  
20 Step 3. Installation of Amplifier Wall-Mount Bracket  
20 Step 4. Speaker Installation  
21 Step 5A. Connect the Power Supply  
21 Step 5B. ISR Connection  
22 Step 5C. Speaker Connection(s)  
22 Step 5D. Audio Input Connections  
23 Step 6. Audio Integration  
24 Step 7. Charging the REDMIKE  
25 Step 8. Set-up and Operation of REDMIKE  
26 9. Audio Equalization of the CAT 860  
27 10. Output to Personal Assistive Listening Device  
28 11. Using the REDMIKE to Amplify External Audio  
Equipment  
29 12. PageFirst: Priority Mute  
30 13. RS-232 Serial Interface Programming  
30  
30  
31  
31  
32  
Serial Interface Protocol  
RS-232 Data Signals  
Connector Signal Wiring  
Command Structure  
Summary of Command & Response  
Transactions  
34  
34  
Control Character Hex Value and Definition  
General Format for Action Command Exchange  
for Basic and Advanced Command Set:  
35  
35  
General Format for Query Command  
Exchange:  
General Format for Aborted Command  
Exchange (Both Basic and Advanced Command  
Sets:  
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TABLE OF CONTENTS CONT’D  
TABLE OF CONTENTS CONT’D  
36 14. RS-232 Serial Interface Command Definition  
7. Differentially Decrease Volume for Selected  
55  
56  
57  
Audio Output Command  
8. Set Absolute Volume for Selected Audio  
Output Command  
9. Query Absolute Volume for Selected Audio  
Output Command  
Basic Command Set for Audio Switcher  
Operations  
Audio Input Functions for the A/V Source  
Group  
36  
37  
1. Enable Audio/Video Source Command  
2. Increment Audio/Video Sources  
Command  
Audio Input Functions for the Infrared Source  
Group  
38  
39  
3. Decrement Audio/Video Sources  
Command  
4. Increment Microphone Audio Inputs  
Command  
1. Select Infrared Input Command  
56  
57  
58  
59  
60  
2. Differentially Increase Volume for Selected  
Infrared Input Command  
40  
41  
5. Mute Audio/Video Sources Command  
3. Differentially decrease volume for selected  
infrared input Command  
6. Un-mute Enabled Audio/Video Source  
Command  
7. Mute Microphone Audio Inputs Command  
4. Set Absolute Volume for Selected Infrared  
Input Command  
42  
42  
43  
5. Query Absolute Volume for Selected Infrared  
Input Command  
Input Muting Functions Group  
8. Un-mute Microphone Audio Inputs Command  
9. Toggle Mute for Enabled Audio/Video Source  
Command  
1. Mute Selected Audio Input Command  
2. Un-Mute Selected Audio Input Command  
System Management Functions Group  
1. Query Model and Software Version Command  
2. Un-Mute Selected Audio Input Command  
System Management Functions Group  
1. Query Model and Software Version Command  
66  
67  
10. Toggle Mute for Microphone Audio Inputs  
Command  
44  
11. Query Enabled Audio/Video Source  
Command  
12. Query Absolute Volume Audio/Video Source  
Command  
45  
46  
47  
68  
67  
13. Query Absolute Volume Microphone Audio  
Input Command  
68  
14. Query Mute for Audio/Video Source  
Command  
48  
49  
SECTION 3:  
Optional Accessories 72  
71 REDMIKE VC: Controls and Connections  
Charging  
15. Query Mute for Microphone Audio Inputs  
Command  
72  
Initial Set-Up  
73 LT-71: Controls and Connections  
Advanced Command Set for Audio Mixer  
Operations  
74  
75  
Charging  
Initial Set-Up  
Audio Input Functions for the A/V Source Group  
1. Select Audio Input Command  
50  
51  
76 REDMIKE Share: Controls and Connections  
2. Query Selected Audio Input Command  
Audio Input Functions for the A/V Source Group  
77  
78  
Charging  
Initial Set-Up  
1. Differentially Increase Volume for Selected  
Audio Input Command  
52  
79 iR Media Connector: Initial Setup  
80 Audio Integration  
80 Other Optional Accessories  
2. Differentially Decrease Volume for Selected  
Audio Input Command  
3. Set Absolute Volume for Selected Audio Input  
Command  
4. Query Absolute Volume for Selected Audio  
Input Command  
5. Select Audio Output Command  
53  
54  
55  
SECTION 4:  
Troubleshooting  
81 Troubleshooting Guide  
82 Tips to Obtain Optimal Audio Performance  
SECTION 5:  
Warranty &  
Specifications  
83 Warranty Statement  
85 Safety Warnings and Certifications  
86 System Specifications  
56  
54  
6. Differentially Increase Volume for Selected  
Audio Output Command  
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IMPORTANT SAFETY INSTRUCTIONS  
1. Read these instructions.  
2. Keep these instructions.  
3. Heed all warnings.  
11. Only use attachments/ accessories  
specified by the manufacturer.  
12. Use only with a cart, stand, tripod,  
bracket or table specified by the  
manufacturer, or sold with the  
apparatus. When a cart is used,  
use caution when moving the cart/  
apparatus combination to avoid  
injury from tip-over.  
4. Follow all instructions.  
5. Do not use the apparatus near  
water.  
6. Clean only with dry cloth.  
7. Do not block any ventilation  
openings. Install in accordance  
with the manufacturer’s  
instructions.  
13. Unplug this apparatus during  
lighting storms or when unused for  
long periods of time.  
14. Refer all servicing to qualified  
service personnel. Servicing is  
required when the apparatus has  
been damaged in any way, such  
as power-supply cord or plug is  
damaged, liquid has been spilled  
or objects have fallen into the  
apparatus, the apparatus has been  
exposed to rain or moisture, does  
not operate normally, or has been  
dropped.  
8. Do not install near any heat  
sources such as radiators,  
heat registers, stoves, or other  
apparatus (including amplifiers)  
that produce heat.  
9. Do not defeat the safety purpose  
of the polarized or grounding-type  
plug. A polarized plug has two  
blades with one wider than the  
other. A grounding- type plug has  
two blades and a third grounding  
prong. The wide blade or the third  
prong is provided for your safety. If  
the provided plug does not fit into  
your outlet, consult an electrician  
for replacement of the obsolete  
outlet.  
15. When the mains plug or appliance  
coupler used as the disconnect  
device, it shall remain readily  
operable.  
16. Please keep the unit in a good  
ventilation environment.  
10. Protect the power cord from  
being walked on or pinched  
particularly at plugs, convenience  
receptacles, and the point where  
they exit from the apparatus.  
6
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Speakers and Speaker Wire  
Systems can be configured with a variety of different speaker types,  
SECTION 1:  
including the following:  
OVERVIEW  
WMQ (x 4)  
DRQ (x 4)  
SYSTEM COMPONENTS AND UNPACKING  
The standard configuration of the CAT 860 will contain:  
860  
CAT 860 Amplifier  
NXQ (x 1)  
Amplifier Power  
Supply  
ISR Infrared Sensor/  
Receiver and Cable  
MCQ (x 1)  
Charging Cradle and  
Power Supply  
Standard Components  
AMP-860  
PS-24V-2.5  
RX-ISR  
Audio amplifier/mixer  
24V/2.5A power supply for CAT 860  
Infrared sensor/receiver with mounting bracket  
50’ plenum-rated Cat 5e cable  
CA-PSE50  
RMT  
REDMIKE classroom microphone with battery  
AA NiMH rechargeable sensing battery for REDMIKE  
REDMIKE lavaliere cord  
REDMIKE®  
Classroom  
Microphone  
BA-NH2A27  
AC-RMLC2  
BC-RMCC  
PS-5V-1.0  
SPEAKERS  
REDMIKE cradle charger  
5V/1.0A power supply for cradle charger  
Contact Lightspeed at 800.732.8999 for speaker info  
8
9
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OPTIONAL COMPONENTS  
FRONT PANEL CONTROLS  
Optional equipment which may be part of your CAT 860 system:  
860  
REDMIKE® VC  
Volume Control  
Microphone  
1
3
4
2
6
REDMIKE Share  
Handheld Mic &  
Charger Cable  
5
1. POWER SWITCH/INDICATOR:  
Press this button to turn the CAT  
860 ON (pushed in) or OFF. When  
the POWER is switched on, the  
blue LED indicator will light.  
6. ALD OUTPUT AND VOLUME:  
This jack sends mixed audio to  
external equipment such as an  
assistive listening device (Personal  
FM System) or recording device.  
Use the volume control to set  
the optimum signal level for the  
device.  
2. AUDIO INDICATORS: These  
lights flash red when audio (voice)  
from the microphone is detected.  
LT-71  
3. A VOLUME: Controls the volume  
of the teacher microphone (set to  
channel A).  
LT-71 LightMic  
and Charger  
Cable  
4. B VOLUME: Controls the volume  
of the student or second teacher  
microphone (set to channel B).  
5. AUDIO INPUT VOLUMES:  
Control the volume of the audio  
coming from the media source  
(computer, TV/VCR, CD/DVD, etc.)  
connected to the corresponding  
input on the rear panel.  
Optional Components  
RMV  
REDMIKE VC microphone with battery  
RMS  
REDMIKE Share handheld microphone with battery pack  
LightMic microphone with batteries  
LT71  
BA-NH2A27  
BA-NH2APK  
BA-NH1  
AA NiMH rechargeable sensing battery for REDMIKE  
NiMH rechargeable battery pack for REDMIKE Share  
AA NiMH rechargeable battery for LT71 (2 per microphone)  
10  
11  
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REAR PANEL CONTROLS  
INFRARED SENSOR/RECEIVER (ISR)  
CONNECTIONS  
7
2
Front Panel  
232  
1
Control Select  
1
2
2
+
-
-
+
4
RS-232 IN  
3
8
1
4
5
9
4
11  
10  
1. CONTROL SELECT: Both  
adjust the sensitivity if needed.  
microphone and aux input volume  
can be adjusted from the front  
panel controls or remotely from  
a controller via the RS-232 Serial  
Interface. This switch selects either  
front panel control or RS-232  
7. EQUALIZER (4-BAND): Adjust  
these controls upon installation to  
properly equalize the system to  
produce optimium audio quality  
from the microphone(s).  
3
1. POWER INDICATOR: This light  
will glow blue when the ISR is  
3. SENSOR OUT: Connect the CAT 5  
8. AUX OUT AND VOL: This jack  
sends audio to external equipment  
such as an assistive listening  
device (Personal FM System) or  
recording device. Use the volume  
control to set the optimum signal  
level for the device.  
control. Front panel controls are  
ignored during RS-232 operation.  
sensor cable to this connection to  
send audio from the microphones  
to the CAT 860 amplifier.  
receiving power from the CAT 860.  
2. RS-232 IN: A 9 pin connector  
to connect the CAT 860 to an  
external controller.  
2. A/B IR INDICATORS: These lights  
glow when the corresponding  
microphone (set to channel A or  
B) is turned on and transmitting.  
A steady light indicates a strong  
signal.  
4. IR EXPANSION: Connect up to  
three passive IR sensors (IR-SR70F)  
to this connection for larger  
3. SPEAKER OUTPUTS (1–4): These  
binding post connectors are used  
to connect the CAT 860 to the  
speakers. Depending on speaker,  
all outputs may not be used.  
9. AUDIO INPUTS: These  
classrooms. For more than one  
additional sensor a 3-way coax  
splitter is required (HS3).  
connections accept an audio  
signal from other technology so  
all multimedia can be distributed  
evenly throughout the classroom.  
*Note: Wiring to these terminals  
should follow the Class 2 wiring  
methods as outlined in the  
National Electric Code.  
10. SENSOR INPUT: The infrared  
microphone audio from the ISR is  
connected to this input via CAT 5  
cable. Connect additional sensors  
to the CAT 860 to cover large or  
odd-shaped classrooms.  
4. CHARGERS: These jacks can  
be used to charge the optional  
LightMic or handheld mic as an  
alternative to connecting them to  
the REDMIKE cradle charger.  
11. SENSOR SHORT: This LED glows  
red when there is a short in the  
ISR or cable. The system will not  
operate, but is protected from  
damage when the LED is lighted.  
5. DC POWER: Plug the 24 V power  
supply into this jack.  
6. PAGING INPUT AND ADJ:  
Connect the input from optional  
PageFirst sensor here when  
interface with a buildings paging  
system. Use the ADJ control to  
12  
13  
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REDMIKE CONTROLS AND CONNECTIONS  
CRADLE CHARGER CONTROLS AND  
CONNECTIONS  
1
4
5
6
2
1
3
2
3
7
1. POWER BUTTON: Press this  
button to turn the REDMIKE ON,  
press again to turn it OFF (mute).  
opening the compartment door, as  
it may tear, leaving fragments.  
1. CHARGE INDICATORS: The light  
glows RED while the REDMIKE is  
charging. When fully charged, the  
light will glow GREEN. A blinking  
RED light indicates that no battery  
is sensed, (REDMIKE Yellow  
2. DC POWER PORT: Connect the  
DC power cord here.  
5. AUDIO/MICROPHONE INPUT:  
Use this input to plug in a laptop,  
MP3 player or other audio  
3. OPTIONAL CHARGING PORT:  
Plug the charging cord for the  
optional LT-71 or the REDMIKE  
Share microphones here.  
2. POWER/LOW BATTERY  
INDICATOR: A BLUE light  
indicates the REDMIKE is on and  
fully charged. A RED light indicates  
a charge is needed.  
source to wirelessly transmit  
Protective Tab may not have been  
completely removed—see page  
10, item 4.) A blinking Green LED  
means a non- Lightspeed battery  
has been installed (possibly an  
alkaline battery).  
audio to be played through the  
system. Alternatively, an external  
microphone can be connected.  
3. BATTERY COMPARTMENT: To  
access the battery compartment,  
slide the door downward. The  
battery should only be replaced  
by a Lightspeed AA rechargeable  
sensing battery (part # BA-  
NH2A27).  
6. CHANNEL SELECT SWITCH  
(CH A/B): This switch allows  
for selection between Channel  
A or B. If you are using a single  
microphone, we recommend using  
Channel A.  
4. YELLOW PROTECTIVE TAB:  
Slide the battery compartment  
door open to remove this  
7. CHARGER CONTACTS (+ -):  
These contacts interface with the  
charging tabs in the BC-RMCC  
cradle charger for daily charging.  
Simply place the REDMIKE in the  
charger.  
disposable protective tab before  
use. NOTE: do not attempt to  
remove the tab without first  
14  
15  
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SECTION 2:  
2. IR SENSOR/RECEIVER (ISR) INSTALLATION  
SET-UP & USE  
Next, find a suitable location for the ISR. Poor location will cause substandard  
performance of the CAT 860 Classroom Audio System. The ISR should be as  
high as possible in the room – the ceiling is the best location, centered along the  
longest wall in the room. When possible, use a conduit to protect the wires (not  
included). Poor choices for placement are corners, on walls at heights lower than  
7 feet (2 meters), or in places where the line of sight from the ISR to the receiver  
is or could be obstructed.  
1. LOCATION OF THE AMPLIFIER  
First, find a suitable location to set-up the amplifier. It is best to put the amplifier  
in a stable location near the other equipment to be used. It can be set in a  
cabinet, on a tabletop, or mounted on the wall with the included bracket.  
Media Cabinet Set-up  
Wall-mount Set-up  
Good placement  
Best placement  
The included wall bracket is  
specifically designed to support the  
CAT 860.  
Avoid!  
Avoid Separated Set-ups  
Components should be housed  
together. Wires should be routed  
back directly to the amplifier.  
Conduit is Recommended  
16  
17  
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2. IR SENSOR/RECEIVER (ISR) INSTALLATION  
2. IR SENSOR/RECEIVER (ISR) INSTALLATION  
CONT’D  
CONT’D  
Once you find a suitable location for the ISR, follow these instructions to mount  
it. There are different instructions for mounting depending on if the ISR will be  
mounted to a suspended ceiling grid or secured to a wall / solid vertical surface.  
Wall/Solid Ceiling Mount  
1. Screw the bracket to a place high  
on the wall or in the middle of the  
solid ceiling. Mount the bracket  
horizontally as shown above.  
a.Guide the mounting rails onto  
the bracket, oriented as  
pictured.  
Suspended Ceiling Mount  
b. Once secure, the ISR locks  
into place.  
2. Uncoil the Cat 5 sensor cable.  
Connect one end of the cable to  
the ISR. Route the wire back to  
the CAT 860 amplifier, securing  
it along with way using surface  
raceway where possible.  
1. Attach the bracket to the ceiling  
tile grid (t-bar).  
c.To remove the ISR, slide a ruler  
or screwdriver behind the ISR to  
press the release bar down and  
slide the ISR off the bracket  
a. Slide the tabs onto the outsides  
of the t-bar, starting with one  
corner.  
b. Attach the second tab around  
the other side of the t-bar.  
3. Slide the ISR onto the bracket until  
it “clicks” into place.  
4. Connect the other end of the Cat  
5 sensor cable into the SENSOR  
INPUT jack on the CAT 860  
amplifier.  
c. Repeat with the other side of  
the bracket so it is connected at  
all four points.  
clip connects to t-bar on ceiling  
2. Slide the ISR onto the bracket until  
it “clicks” into place.  
a. Guide the mounting rails onto  
the bracket, oriented as  
pictured.  
b. Once secure, the ISR locks into  
place.  
c. To remove the ISR, press the  
release bar down and slide the  
ISR off the bracket.  
Release Bar  
3. Uncoil the Cat 5 sensor cable.  
Connect one end of the cable to  
the ISR. Secure wire overhead and  
route it back to the system.  
4. Connect the other end of the Cat  
5 sensor cable into the SENSOR  
INPUT jack on the CAT 860  
amplifier.  
18  
19  
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3. INSTALLATION OF AMPLIFIER WALL-  
MOUNT BRACKET  
5A. CONNECT THE POWER SUPPLY  
1. Ensure the power button is  
depressed in the OFF position.  
3. Connect the black AC power cable  
from the power supply to a wall  
outlet.  
The CAT 860 systems include a bracket for optional wall-mounting.  
2. Connect the CD end of the power  
supply to the black power jack  
labeled DC POWER.  
A. Determine the location:  
a. It should be located near a  
power outlet.  
b.Height should allow for access to  
front control panel, but also be  
in compliance with building and  
ADA regulations.  
CAT 860 Amplifier  
RS-232 IN  
B. Screw the bracket to the wall at  
the two screw hole points with  
the included hardware. Attach  
to a stud when possible; use the  
drywall mollies when studs are not  
available.  
DC Power Source Cable  
C. Slide the CAT 860 onto the bracket  
using the channel on the bottom  
of the amplifier.  
D. Secure the CAT 860 to the bracket  
by tightening the screw on the  
bottom.  
E. Now that the CAT 860 is secure,  
it can be slowly pulled out and  
pivoted for better access to the  
back panel. Push the CAT 860 back  
in, to lock into place.  
5B. ISR CONNECTION  
1. Ensure the power is still switched  
off.  
F. The power supply can be set  
on the back of the bracket and  
secured with ties if desired.  
2. Check the connection from the ISR  
to the CAT 860. Ensure the sensor  
cable is securely attached and  
locked into place.  
ISR Sensor/Receiver  
CAT 860 Amplifier  
4. SPEAKER INSTALLATION  
1. Locate the speaker installation  
instructions packed with your  
speaker(s).  
2. Follow instructions and mount  
speaker(s).  
3. Return to this manual to complete  
the set up of your system.  
20  
21  
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5C. SPEAKER CONNECTION(S)  
6. AUDIO INTEGRATION  
Next, connect the CAT 860 to the speakers. Then, be sure any auxiliary audio  
sources are connected to the corresponding labeled input on the CAT 860.  
The next step in setting up your CAT 860 system is to connect it to the other  
multimedia devices in your classroom. You may have a computer, television,  
DVD/VCR player, a visual projection system or other devices. Below are  
instructions on how to integrate TV/VCR, CD/DVD or computer directly into the  
CAT 860.  
1. Ensure speaker wire connections  
are secure and not frayed.  
*Note: Wiring to these terminals  
should follow the Class 2 wiring  
methods as outlined in the  
National Electric Code.  
1. Ensure the power is switched  
off and the audio input volume  
controls are turned all the way  
down.  
3. With both the CAT 860 and the  
audio source power on, adjust the  
corresponding volume control on  
the CAT 860 until the desired level  
is achieved.  
2. Connect the appropriate RCA or  
3.5mm audio cable (not included)  
from the audio source into the  
corresponding input jack on the  
rear panel of the CAT 860.  
Front Panel  
RS-232  
One Possible Set-up  
Control Select  
1
2
+
-
-
+
RS-232 IN  
6
5D. AUDIO INPUT CONNECTIONS  
7
2
3
4
5
1
1. PROJECTOR  
2. LAPTOP  
3. CAT 860  
4. DVD  
5. ISR SENSOR  
6. TEACHER’S MICROPHONE  
7. SPEAKERS  
Front Panel  
RS-232  
Control Select  
1
2
+
-
-
+
RS-232 IN  
22  
23  
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7. CHARGING THE REDMIKE  
8. SETUP AND OPERATION OF REDMIKE  
Before use, the REDMIKE should be charged. It will take 8-9 hours for the  
REDMIKE to obtain a full charge. A fully charged REDMIKE will last for over 7  
hours of use. If microphones are used daily, they should be kept in the cradle –  
microphones can be left in a charging cradle constantly for up to 2 weeks without  
causing degradation to battery life.  
Once the REDMIKE is charged, follow these steps to set it up for use.  
1. Turn the CAT 860 power on. The  
blue LED will glow.  
A red light on the charging cradle indicates the REDMIKE is charging. A green  
light indicates that charging is complete and a full charge has been reached. A  
blinking light indicates a charging or sensing error. See Troubleshooting section  
for more information.  
2. Remove the REDMIKE from the  
charging cradle and turn it on.  
3. Slip the REDMIKE with lanyard  
around the neck and position the  
top of the microphone just below  
the collarbone. NOTE: Positioning  
of the REDMIKE is critical for  
REDMIKE incorporates alkaline protection into the microphone design. Always  
use a Lightspeed rechargeable sensing battery. Replacement AA NiMH batteries  
may only be purchased through Lightspeed Technologies (part # BA-NH2A27).  
Do not attempt to charge alkaline batteries. They can overheat and expand  
creating a significant hazard and damaging the microphone (this is not covered  
by warranty).  
proper volume adjustment.  
4. While speaking in a normal voice  
slowly increase the volume of the  
corresponding channel on the  
CAT 860 until your voice is barely  
audible. Each REDMIKE has its  
channel pre-set to either A or B, as  
indicated on the back of the Mic.  
1. Plug power cord into the cradle  
charger and then plug the AC end  
into an electrical outlet.  
2. Ensure that the REDMIKE is turned  
OFF.  
REMEMBER: This equipment  
supplements the user’s voice  
so they are able to speak in a  
conversational tone. Having the  
volume set too high will result in  
feedback and listener fatigue.  
5. Once initial volume level is set,  
walk around the room and listen  
for audio dropout and overall  
audio quality. Fine-tuning the  
audio is accomplished by making  
minor adjustments to the 4-Band  
Equalizer on the back panel of the  
CAT 860.  
3. Place the REDMIKE into the  
cradle. The LED on the cradle  
will glow RED indicating charging  
has started. When the REDMIKE  
is fully charged the LED on the  
cradle charger will change to  
GREEN.  
6. If a second REDMIKE was  
purchased, repeat steps 2-4.  
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9. AUDIO EQUALIZATION OF THE CAT 860  
10. OUTPUT TO PERSONAL ASSISTIVE  
LISTENING DEVICE (ALD)  
The CAT 860 uses a 4-band audio equalizer designed to optimize and fine-tune  
the microphone sound quality for the classroom. Below are some tips on proper  
system equalization:  
1. Turn the ALD (Assistive Listening  
Device) volume control on the  
back panel all the way down (fully  
counterclockwise).  
Front Panel  
RS-232  
•
•
•
The voice should be natural,  
very clear and without any audio  
feedback (ringing)  
Control Select  
1
2
+
-
-
+
RS-232 IN  
Walk the room listening for the  
overall quality and any feedback  
that is present  
If there is a lot of audio feedback,  
it is likely the volume is too high.  
Ensure the volume is at the  
2. Determine the size and type of  
audio input jack on the device as  
many manufacturers’ products  
differ in connector size and shape.  
The Lightspeed LES-370 Personal  
FM System requires a 3.5 mm to  
3.5 mm patch cable (part# CA-  
MMC3535, not included).  
4. Adjust the volume control on  
the ALD’s receiver to maximum  
output. NOTE! This is to set the  
maximum allowable signal from  
the CAT 860.  
appropriate level, a second person  
is helpful to determine this.  
•
If feedback is still present with the  
audio set at the right level, make  
the following EQ adjustments:  
5. With the CAT 860 and ALD turned  
on, speak into the REDMIKE and  
slowly adjust the corresponding  
volume control on the CAT 860  
until the appropriate audio level is  
obtained in the ALD.  
– High pitched ring: lower the 2K  
and/or 4K adjustment by _ turn  
– Lower pitched ring: lower the  
500 and/or 1K adjustment by _  
turn  
3. Connect a patch cable from the  
ALD’s microphone jack or AUX  
input to one of the following  
3.5mm audio jack on the CAT 860:  
•
•
If you notice the sound is “muddy”  
or has too much bass:  
•
•
“ALD OUT” on the front panel  
“AUX OUT” on the back panel  
– Lower the 500 adjustment by _  
turn and/or  
– Raise the 2K or 4K adjustment by  
1/8 turn  
Front Panel  
RS-232  
Control Select  
1
2
+
-
-
+
RS-232 IN  
Note: the EQ adjustments should  
be preset at “12:00.” This is the  
nominal level and any adjustments  
(up or down) should be made from  
this level.  
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11. USING THE REDMIKE TO AMPLIFY  
EXTERNAL AUDIO EQUIPMENT  
12. PAGEFIRST: PRIORITY MUTE  
This optional feature interfaces with an independent classroom paging system.  
When the page is broadcast, all audio from the system is muted, ensuring  
important school-wide messages are never missed.  
The REDMIKE includes a 3.5mm audio input jack to connect to an audio source  
like a laptop or MP3 player. The REDMIKE will transmit the audio signal to be  
played through the system.  
How it works:  
If your system includes two REDMIKEs, we recommend using Channel B (student  
mike) to amplify the external audio equipment so the teacher’s volume on the  
Channel A (teacher mike) does not have to be adjusted.  
1. PageFirst sensor clip is hung  
around the lead wires attached to  
the classroom paging speaker.  
2. The clip is hard-wired to the CAT  
860.  
To determine which REDMIKE is set to Channel B, you can look at the switch on  
the back of the mike or speak into one of the mics and watch which set of LED’s  
glow on the front panel of the CAT 860 (A Volume or B Volume correspond to  
Channels A or B).  
3. As a page is broadcast, the  
sensor clip detects the audio  
signal through induction and  
immediately mutes the CAT 860.  
4. When the page is over, the audio  
from the CAT 860 returns to  
normal volume level.  
1. Plug your external audio  
equipment (for example, laptop),  
into the input on the REDMIKE  
labeled “INPUT” using a 3.5mm  
(For full installation details refer to  
the install sheet included with the  
optional PageFirst sensor clip)  
patch cable.  
AUDIO  
INPUT  
AUDIO  
OUTPUT  
2. Adjust the volume on the CAT  
860 receiver which corresponds to  
selected mic channel A or B.  
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13. RS-232 SERIAL INTERFACE  
PROGRAMMING  
13. RS-232 SERIAL INTERFACE  
PROGRAMMING CONT’D  
The CAT 860 uses standard RS-232 protocols as a serial link to an external  
control module such as an intelligent wall panel, or a personal computer.  
When the Control Select switch in the “RS-232” position, the serial link  
offers remote access to operational control circuitry within the CAT 860 for  
the purpose of controlling the volume of the audio input and output ports.  
Additionally, the serial links allows remote queries of internal CAT 860 system  
status.  
Connector Signal Wiring  
DTE PIN ASSIGNMENTS (DB-9)  
1
2*  
3*  
4
DCD  
RxD  
TxD  
DTR  
GND  
DSR  
RTS  
CTS  
RI  
Data Carrier Detect  
Received Data  
Transmitted Data  
Data Terminal Ready  
Ground (Signal)  
Data Set Ready  
Request to Send  
Clear to Send  
Serial Interface Protocol  
5*  
6
CAT 860 RS-232 SETTINGS  
Sync. Method:  
Stop Bits:  
Baud Rate:  
Parity:  
Asynchronous  
Accepts 1 or 2 stop bits  
9600 baud  
7
8
9
Ring Indicator  
* Only 3-Pin Connection  
None  
Data Size:  
Connector:  
8-bits  
Command Structure  
9-Pin, Female D-Sub  
An external controller, in the form of an intelligent wall panel or a personal  
computer, can use the RS-232 serial link to remotely send commands to initiate  
actions or queries for the CAT 860. In response, the CAT 860 uses the RS-232  
serial link to send acknowledgements or status data back to external controller.  
There are two operational command sets; the Basic Command Set for  
audio switching and the Advanced Command Set for audio mixing. It is not  
recommended to intermix commands from the two command sets.  
RS-232 Data Signals  
The Basic Command Set treats the CAT 860 as a simple audio switcher  
where only one of four audio/video sources is enabled at one time. The two  
microphone channels are controlled as a pair independently from the audio/  
video sources. The low-cost serial controllers with their limited functionality  
will typically will be restricted to a subset of the Basic Command Set. These  
controllers usually cannot utilize the query commands, or the response packets.  
More capable high-end serial controllers can take advantage of the complete  
features of the Basic Command Set.  
RS-232 LOGIC WAVEFORM (8N1)  
Command and parameter characters travel serially along the RS-232 signal link  
between the external controller and the CAT 860. The command and parameter  
information is in the form of two hexadecimal values contained in the 8-data bits  
of each RS-232 character. The above graphic illustrates a typical RS-232 logic  
waveform representing a character (Data format: 1 Start bit, 8 Data bits, No  
Parity, 1 Stop bit). The data transmission starts with a Start bit, followed by the  
data bits (LSB sent first and MSB sent last), and ends with a “Stop” bit.  
The Advanced Command Set treats the CAT 860 as an audio mixer which is  
aligned with the traditional usage for Lightspeed CAT 800 series products. The  
Advanced Command Set requires the more capable high-end serial controllers  
to utilize the CAT 860 to its greatest potential.  
It is expected that each button press from the serial controller would use only a  
single action/query command packet. If a single button press must issue a string  
of multiple action/query command packets then each packet must be separated  
by at least a 10ms delay, or alternately, a new command packet must wait until  
the CAT 860 issues a response packet/character before it can be sent.  
The voltage of Logic “1” (Mark) is between -3VDC to -15VDC, while the Logic “0”  
(Space) is between +3VDC to +15VDC.  
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13. RS-232 SERIAL INTERFACE  
13. RS-232 SERIAL INTERFACE  
PROGRAMMING CONT’D  
PROGRAMMING CONT’D  
Summary of command and response transactions:  
Summary of command and response transactions Cont’d:  
1. Action Command Functions for the Basic Command Set (Audio Switcher  
Operations):  
f. Return Absolute Audio Output Channel Volume Setting  
g. Return Mute/Un-mute Status for Audio Inputs  
a. Enable One of Four Audio/Video Sources  
5. Action/Query Response Functions:  
b. Increment and Decrement All Audio/Video Sources by 2dB  
c. Increment and Decrement Both Microphone Channels by 2dB  
d. Mute and Un-mute All Audio/Video Sources  
a. Not Acknowledge (NACK) is the response for any aborted commands.  
b. Action Command response is to repeat back the command packet sent  
by the serial controller. Some action command packets do not have a  
<Param> character, but all response packets will have one or two <Param>  
characters.  
e. Mute and Un-mute Both Microphone Channels  
2. Query Command Functions for the Basic Command Set (Audio Switcher  
Operations):  
Example: CMD><Param><Param><EOT>  
Example: <STX><CMD><Param><EOT>  
a. Return Absolute Microphone Source Volume Setting  
c. The Query Command response is for the most part the query command  
repeated back to the serial controller. However, the response packet also  
includes one or two imbedded <Param> characters which contain the  
values of the pertinent CAT 860 registers.  
b. Return Audio/Video Source Selection Status (TV/VCR, CD/DVD, COMP, or  
AUX)  
c. Return Absolute Audio/Video Source Volume Setting  
d. Return Mute/Un-mute Status for Microphone Source Inputs  
e. Return Mute/Un-mute Status for Audio/Video Source Inputs  
Example: CMD><Param><Param><EOT>  
Example:  
<STX><CMD><Param><EOT><STX><CMD><Param><Param><EOT>  
3. Action Command Functions for the Advanced Command Set (Audio Mixer  
Operations):  
Example: <STX><CMD><Param><EOT>  
a. Select Control of Microphone Input Channel (A or B)  
b. Set Differential Microphone Input Channel Volume  
c. Set Absolute Microphone Input Channel Volume  
d. Select Control of Audio/Video Source (TV/VCR, CD/DVD, COMP, or AUX)  
e. Set Differential Audio/Video Source Volume  
f. Set Absolute Audio/Video Source Volume  
g. Select Control of Audio Output Channel (AUX)  
h. Set Absolute Audio Output Channel Volume  
i. Set Mute/Un-mute of Any or All Audio Inputs  
4. Query Command Functions for the Advanced Command Set (Audio Mixer  
Operations):  
a. Return Microphone Input Channel Selection Status (A or B)  
b. Return Absolute Infrared Input Channel Volume Setting  
c. Return Audio/Video Source Selection Status (TV/VCR, CD/DVD, COMP, or  
AUX)  
d. Return Absolute Audio/Video Source Volume Setting  
e. Return Audio Output Channel Selection Status (AUX)  
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13. RS-232 SERIAL INTERFACE  
13. RS-232 SERIAL INTERFACE  
PROGRAMMING CONT’D  
PROGRAMMING CONT’D  
Control Character Hex Value and Definition  
STX  
EOT  
ACK  
(0x02)  
(0x04)  
(0x06)  
Start character of an action command packet.  
End character of any command packet.  
General Format for Query Command Exchange:  
Only response character from the CAT 860  
if action command (PING command only) is  
properly received and accepted.  
In this example the external controller sends query command packet to CAT  
860. CAT 860 repeats back the action command packet in response which also  
includes one or two imbedded <Param> characters. The <Param> characters  
which are added to the query command packets contain the values of the perti-  
nent internal CAT 860 registers.  
NACK  
(0x15)  
Only response character from the CAT 860 if  
any command is corrupted or unsupported.  
The CAT 860 should send a NACK if:  
Controller:  
CAT 860:  
<STX><CMD><EOT>  
<STX><CMD><Param><Param><EOT>  
1. The CAT 860 can not recognize the start or  
command characters.  
2. The CAT 860 does not receive an end  
character after receiving a total of twenty  
characters after receiving valid start and  
command characters.  
General Format for Aborted Command Exchange (Both Basic and Advanced  
Command Sets:  
3. The CAT 860 does not receive an end  
character after waiting 50ms after receiving  
valid start and command characters.  
In this example the external controller sends either an action or query command  
to CAT 860 and the command is either corrupted or unsupported. The <Param>  
characters can be absent.  
CMD  
(find hex value  
from Table 1)  
This is the general symbol for the command  
character derived from Table 1.  
Controller:  
CAT 860:  
<STX><CMD><Param><EOT>  
<NACK>  
Param  
(find hex value  
from Table 1)  
This is the general symbol for the parameter  
character(s) associated with the command  
character. They are derived form Table 1.  
Note: It is expected that each button press from the serial controller would use  
only a single command/query packet. If a single button press must issue a string  
of multiple command/query packets then each packet must be separated by at  
least a 10ms delay, or alternately, a new packet must wait until the CAT 860 issues  
a response packet/character before it can be sent.  
General Format for Action Command Exchange for Basic and Advanced  
Command Set:  
In this example, the serial controller sends an action command packet to the  
CAT 860 and in response the CAT 860 repeats back the action command packet  
the serial controller. The <Param> characters can be absent from the action  
command packet, but all response packets will have one or two added <Param>  
characters containing the values of the pertinent internal CAT 860 register.  
Controller:  
CAT 860:  
<STX><CMD><Param><EOT>  
<STX><CMD><Param><EOT>  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
2. INCREMENT AUDIO/VIDEO SOURCES COMMAND  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS  
Audio Input Functions for the A/V Source Group  
1. ENABLE AUDIO/VIDEO SOURCE COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
IAVS  
0xE1  
Command Packet:  
Increment the volume of  
the selected audio input  
by 2 dB. This overrides any  
previous mute commands.  
AVS p  
0xE0  
Command Packet:  
Select (enable) one of four  
Audio/Video input sources  
to receive audio. The  
The controller sends no  
<Param> character in the  
command packet.  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
remaining three unselected  
Audio/Video input ports  
will be muted by sending  
the -79dB setting their  
corresponding volume  
control hardware registers.  
Note that muting inputs  
does not change the values  
in any of the volume-level  
EEPROM variables.  
The remaining three  
unselected audio/video  
source inputs remain muted.  
0x80 = Enable TV/VCR  
0x81 = Enable CD/DVD  
0x82 = Enable COMPUTER  
0x83 = Enable AUX IN  
Response Packet:  
If the command is properly  
received, the CAT 860  
responds by repeating back  
the command packet to  
the serial controller with an  
added imbedded <Param>  
character containing the  
value loaded.  
0x84 = Enable All Inputs **  
Response Packet:  
If the command is properly  
received, the CAT 860  
responds by repeating back  
the command packet to the  
serial controller.  
** Power up default used  
to facilitate initial system  
installation.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
Power up default initially  
has all six audio inputs  
enabled. The power up  
default settings for all six  
input volume-level EEPROM  
variables is the setting for  
-40dB.  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
3. DECREMENT AUDIO/VIDEO SOURCES COMMAND  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
4. INCREMENT MICROPHONE AUDIO INPUTS COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
IMAI  
0xE3  
Command Packet:  
Increment the volume for  
microphone channel A  
and B audio by 2 dB. This  
overrides any previous mute  
commands.  
DAVS  
0xE2  
Command Packet:  
Decrement the volume of  
the selected audio input  
by 2 dB. This overrides any  
previous mute commands.  
The controller sends no  
<Param> character in the  
command packet.  
The controller sends no  
<Param> character in the  
command packet.  
The remaining three  
Response Packet:  
unselected audio/video  
source inputs remain muted.  
If the command is properly  
received, the CAT 860  
Response Packet:  
responds by repeating  
back the command packet  
with an added imbedded  
<Param> character  
If the command is properly  
received, the CAT 860  
responds by repeating  
back the command packet  
with an added imbedded  
<Param> character  
containing the value loaded.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character  
containing the value loaded.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
DECREMENT MICROPHONE AUDIO INPUTS COMMAND  
DMAI  
0xE4  
Command Packet:  
Decrement the volume of  
the microphone channel A  
and B audio by 2 dB. This  
overrides any previous mute  
commands.  
The controller sends no  
<Param> character in the  
command packet.  
Response Packet:  
If the command is properly  
received, the CAT 860  
responds by repeating  
back the command packet  
with an added imbedded  
<Param> character  
containing the value loaded.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
5. MUTE AUDIO/VIDEO SOURCES COMMAND  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
6. UN-MUTE ENABLED AUDIO/VIDEO SOURCE COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
MAVS  
0xE5  
Command Packet:  
Mute all audio input volume  
by sending -79dB for each  
input (TV/VCR, CD/DVD,  
COMPUTER, and AUX).  
UAVS  
0xE6  
Command Packet:  
Un-mute audio volume for  
the audio input selected  
by the most recent EAVS  
(<0xE0>) command stored  
in EEPROM.  
The controller sends no  
<Param> character in the  
command packet.  
The controller sends no  
<Param> character in the  
command packet.  
Response Packet:  
The remaining three  
If the command is properly  
received, the CAT 860  
responds by repeating  
back the command packet  
with an added imbedded  
<Param> character  
unselected audio/video  
sources will remain muted.  
None of the input volume-  
level EEPROM variables are  
modified.  
containing the value 0x81  
indicating that the A/V  
audio sources are in the  
muted state.  
Response Packet:  
If the command is properly  
received, the CAT 860  
responds by repeating  
back the command packet  
with an added imbedded  
<Param> character  
containing the value 0x80  
indicating that the A/V  
audio sources are no longer  
in the muted state  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
7. MUTE MICROPHONE AUDIO INPUTS COMMAND  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
9. TOGGLE MUTE FOR ENABLED AUDIO/VIDEO SOURCE COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
TMAV  
0xE9  
Command Packet:  
The Toggle Mute command  
toggles between mute and  
un-mute for the audio/video  
source inputs.  
MMAI  
0xE7  
Command Packet:  
The Mute microphone  
volume command sets both  
microphone channels (A &  
B) to -79dB.  
The controller sends no  
<Param> character in the  
command packet.  
The controller sends no  
<Param> character in the  
command packet.  
When set to mute, the 860  
Aux Audio Inputs are set to  
-79dB.  
Response Packet:  
If the command is properly  
received, the CAT 860  
responds by repeating  
back the command packet  
with an added imbedded  
<Param> character  
When set to unmute, the  
860 resets the previously  
selected input to it’s  
previous volume setting and  
the remaining three Aux  
Audio Inputs remain set at  
-79dB.  
containing the value  
0x81 indicating that the  
microphone audio inputs  
are in the muted state.  
Response Packet:  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
If the command is properly  
received, the CAT 860  
responds by repeating  
back the command packet  
with an added imbedded  
<Param> character  
containing the value 0x80  
if the resultant state is  
“un-muted” and 0x81 if the  
resultant state is “muted”.  
8. UN-MUTE MICROPHONE AUDIO INPUTS COMMAND  
UMAI  
0xE8  
Command Packet:  
Response Packet:  
The controller sends no  
<Param> character in the  
command packet.  
If the command is properly  
received, the CAT 860  
responds by repeating  
back the command packet  
with an added imbedded  
<Param> character  
containing the value  
0x80 indicating that the  
microphone audio inputs  
are no longer in the muted  
state.  
Definition:  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
The un-mute microphone  
volume command  
reloads the previously set  
microphone volume levels.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
13. RS-232 SERIAL INTERFACE  
PROGRAMMING CONT’D  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
11. QUERY ENABLED AUDIO/VIDEO SOURCE COMMAND  
10. TOGGLE MUTE FOR MICROPHONE AUDIO INPUTS COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
TMMI  
0xEA  
Command Packet:  
This command toggles  
between mute and un-mute  
for the microphone audio  
inputs.  
QEAV?  
0xEB  
Command Packet:  
This command causes the  
CAT 860 to return a query  
response packet where the  
added <Param> character  
contains the “enable” status  
set by EAVS (<0xE0>).  
The controller sends no  
<Param> character in the  
command packet.  
The controller sends no  
<Param> character in the  
command packet.  
When set to mute, the 860  
microphone Channel A & B  
volumes are set to -79dB.  
Response Packet:  
When set to unmute, the  
860 resets the microphone  
volumes to their previous  
volume setting.  
If the command is properly  
received, the CAT 860  
responds by repeating back  
the command packet to the  
serial controller with the  
added <Param> character  
containing the value  
Response Packet:  
If the command is properly  
received, the CAT 860  
responds by repeating  
back the command packet  
with an added imbedded  
<Param> character  
indicating the “enable”  
status set by EAVS (<0xE0>).  
The possible values are  
shown below:  
containing the value 0x80  
if the resultant state is  
“un-muted” and 0x81 if the  
resultant state is “muted”.  
0x80 = TV/VCR Enabled  
0x81 = CD/DVD Enabled  
0x82 = COMPUTER Enabled  
0x83 = AUX IN Enabled  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
44  
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13. RS-232 SERIAL INTERFACE  
PROGRAMMING CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
12. QUERY ABSOLUTE VOLUME AUDIO/VIDEO SOURCE COMMAND  
13. QUERY ABSOLUTE VOLUME MICROPHONE AUDIO INPUT COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
QVAV?  
0xEC  
Command Packet:  
This command causes the  
CAT 860 to return a query  
response packet where the  
added imbedded <Param>  
character contains the  
absolute volume-level for  
the audio/video sources  
inputs.  
QVMI?  
0xED  
Command Packet:  
This command causes the  
CAT 860 to return a query  
response packet where the  
added <Param> character  
contains the absolute  
The controller sends no  
<Param> character in the  
command packet.  
The controller sends no  
<Param> character in the  
command packet.  
volume-level for the  
microphone audio inputs.  
Response Packet:  
Response Packet:  
If the command is properly  
received, the CAT 860  
If the command is properly  
received, the CAT 860  
responds by repeating back  
the command packet to the  
serial controller with the  
added <Param> character  
containing the absolute  
volume level for the audio/  
video sources.  
responds by repeating back  
the command packet to the  
serial controller with the  
added <Param> character  
containing the absolute  
volume level for the audio/  
video sources.  
The possible values are  
shown below:  
The possible values are  
shown below:  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0x80 = -79dB  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
46  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
14. QUERY MUTE FOR AUDIO/VIDEO SOURCE COMMAND  
BASIC COMMAND SET FOR AUDIO SWITCHER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
15. QUERY MUTE FOR MICROPHONE AUDIO INPUTS COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
QMAV?  
0xEE  
Command Packet:  
This command causes the  
CAT 860 to return a query  
response packet where the  
added imbedded <Param>  
character contains the mute  
state for the audio/video  
sources.  
QMMI?  
0xEF  
Command Packet:  
This command causes the  
CAT 860 to return a query  
response packet where the  
added imbedded <Param>  
character contains the mute  
state for the microphone  
audio inputs.  
The controller sends no  
<Param> character in the  
command packet.  
The controller sends no  
<Param> character in the  
command packet.  
Response Packet:  
Response Packet:  
If the command is properly  
received, the CAT 860  
If the command is properly  
received, the CAT 860  
responds by repeating  
responds by repeating  
back the command packet  
with an added imbedded  
<Param> character  
back the command packet  
with an added imbedded  
<Param> character  
containing the value 0x80 if  
the state is “un-muted” and  
0x81 if the state is “muted”.  
containing the value 0x80 if  
the state is “un-muted” and  
0x81 if the state is “muted”.  
The possible values are  
shown below:  
The possible values are  
shown below:  
0x80 = Un-muted  
0x81 = Muted  
0x80 = Un-muted  
0x81 = Muted  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS  
Audio Input Functions for the A/V Source Group  
1. SELECT AUDIO INPUT COMMAND  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
2. QUERY SELECTED AUDIO INPUT COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
AICH p  
0x90  
Command Packet:  
Response Packet:  
AICH?  
0x91  
Command Packet:  
This command causes the  
CAT 860 to return a query  
response packet where  
the <Param> contains the  
selection status set by AICH  
(<0x90>).  
The controller sends only  
one <Param> character in  
the command packet. The the response packet. The  
possible values are shown  
below:  
The CAT 860 sends only  
one <Param> character in  
The controller sends no  
<Param> character in the  
command packet.  
possible values are shown  
below:  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
0x80 = TV/VCR**  
0x81 = CD/DVD  
0x80 = TV/VCR  
0x81 = CD/DVD  
0x82 = COMPUTER  
0x83 = AUX IN  
0x82 = COMPUTER  
0x83 = AUX IN  
Response Packet:  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x86 = AUX OUT  
** Power up default  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x86 = AUX OUT  
The CAT 860 sends only  
one <Param> character in  
the response packet. The  
possible values are shown  
below:  
Definition  
0x80 = TV/VCR  
This command determines which volume-level will be affected by the AIDI  
(<0x92>), AIDD (<0x93>), and AIAV (<0x94>) commands.  
0x81 = CD/DVD  
0x82 = COMPUTER  
0x83 = AUX IN  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the <Param> character contains the selection status.  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x86 = AUX OUT  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
Power up default is TV/VCR selected.  
These items are included for controllers limited to only a single volume control,  
the three parameters on the left allow the AIDI (<92>), AIDD (<93>), AIAV, (<94>)  
and AIAV? (<95>) commands to have the same capabilities as the AODI (<A2>),  
AODD (<A3>), AOAV (<A4>), AOAV? (<A5>), IIDI (<B2>), IIDD (<B3>), IIAV  
(<B4>), and IIAV? (<B5>) commands.  
That is, multiple commands will be able to independently affect the values of  
the same volume-level EEPROM variables which correspond to the IR CH-A, the  
IR CH-B, and the AUX OUT. This is true even if the two commands have been  
directed to the same volume-level EEPROM variable. In this case the EEPROM  
variable retains the value from the last command issued from the serial controller.  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group  
2. DIFFERENTIALLY DECREASE VOLUME FOR SELECTED AUDIO INPUT  
COMMAND  
1. DIFFERENTIALLY INCREASE VOLUME FOR SELECTED AUDIO INPUT  
COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
AIDD p  
0x93  
Command Packet:  
Response Packet:  
AIDI p  
0x92  
Command Packet:  
Response Packet:  
The CAT 860 sends two  
<Param> characters in  
the response packet. The  
possible values are shown  
below:  
The CAT 860 sends two  
<Param> characters in the  
response packet. Possible  
values are shown below:  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
<Param> #1:  
0x80 = TV/VCR  
0x81 = CD/DVD  
0x82 = COMPUTER  
0x83 = AUX IN  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x86 = AUX OUT  
<Param> #2:  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
<Param> #1:  
0x80 = TV/VCR  
0x81 = CD/DVD  
0x82 = COMPUTER  
0x83 = AUX IN  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x86 = AUX OUT  
<Param> #2:  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0x81 = one 1dB step  
0x82 = two 1dB steps  
0x83 = three 1dB steps  
0x84 = four 1dB steps  
0x85 = five 1dB steps  
0x86 = six 1dB step  
0x81 = one 1dB step  
0x82 = two 1dB steps  
0x83 = three 1dB steps  
0x84 = four 1dB steps  
0x85 = five 1dB steps  
0x86 = six 1dB step  
0x87 = seven 1dB steps  
0x88 = eight 1dB steps  
0x89 = nine 1dB steps  
0x8A = ten 1dB steps  
0x87 = seven 1dB steps  
0x88 = eight 1dB steps  
0x89 = nine 1dB steps  
0x8A = ten 1dB steps  
0x82 = -77dB  
0x81 = -78B  
0x82 = -77dB  
0x81 = -78B  
0x80 = -79dB  
0x80 = -79dB  
Definition: This command modifies the volume-level EEPROM variable which  
was selected by the AICH (<0x90>) command. The EEPROM variable is  
incremented by the amount indicated in the <param> character.  
Definition: This command modifies the volume-level EEPROM variable which  
was selected by the AICH (<0x90>) command. The EEPROM variable is  
decremented by the amount indicated in the <param> character.  
Afterwards, the value in the EEPROM variable is unconditionally loaded into the  
corresponding volume control hardware register. This overrides any prior mute  
operation.  
Afterwards, the value in the EEPROM variable is unconditionally loaded into the  
corresponding volume control hardware register. This overrides any prior mute  
operation.  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the first of two replacement <Param> characters  
contains the selection status set by AICH (<0x90>) and the second contains the  
resultant value stored in the volume-level EEPROM variable which was modified  
by this command.  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the first of two replacement <Param> characters  
contains the selection status set by AICH (<0x90>) and the second contains the  
resultant value stored in the volume-level EEPROM variable which was modified  
by this command.  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
For the audio inputs, the power up default values for all six input volume-level  
EEPROM variables is set for -40dB.  
For the audio inputs, the power up default values for all six input volume-level  
EEPROM variables is set for -40dB.  
52  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
4. QUERY ABSOLUTE VOLUME FOR SELECTED AUDIO INPUT COMMAND  
3. SET ABSOLUTE VOLUME FOR SELECTED AUDIO INPUT COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
AIAV p  
0x94  
Command Packet:  
Response Packet:  
AIAV?  
0x95  
Command Packet:  
Response Packet:  
The CAT 860 sends two  
<Param> characters in the  
response packet. Possible  
values are shown below:  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
The controller sends no  
<Param> character in the  
command packet.  
The CAT 860 sends two  
<Param> characters in  
the response packet. The  
possible values are shown  
below:  
<Param> #1:  
0x80 = TV/VCR  
0x81 = CD/DVD  
0x82 = COMPUTER  
0x83 = AUX IN  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x86 = AUX OUT  
<Param> #2:  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0xCF = 0 dB  
<Param> #1:  
0x80 = TV/VCR  
0x81 = CD/DVD  
0x82 = COMPUTER  
0x83 = AUX IN  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x86 = AUX OUT  
<Param> #2:  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB**  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0x80 = -79dB  
** Power up default  
0x82 = -77dB  
0x81 = -78B  
0x80 = -79dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
Definition: This command modifies the volume-level EEPROM variable which  
was selected by the AICH (<0x90>) command. The EEPROM variable is set the  
value indicated in the <param> character.  
0xA7 = -40dB  
0x83 = -76dB  
Afterwards, the value in the EEPROM variable is unconditionally loaded into the  
corresponding volume control hardware register regardless of any prior mute  
operation.  
0x82 = -77dB  
0x81 = -78B  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the first of two replacement <Param> characters  
contains the selection status set by AICH (<0x90>) and the second contains the  
resultant value stored in the volume-level EEPROM variable which was modified  
by this command.  
0x80 = -79dB  
Definition: This command causes the CAT 860 to return a query response packet  
where the first of two <Param> characters contains the selection status set by  
AICH (<0x90>) and the second contains the value stored in the volume-level  
EEPROM variable selected by the AICH (<0x90>) command.  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
For the audio inputs, the power up default values for all six input volume-level  
EEPROM variables is set for -40dB.  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
5. SELECT AUDIO OUTPUT COMMAND  
6. DIFFERENTIALLY INCREASE VOLUME FOR SELECTED AUDIO OUTPUT  
COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
AOCH p 0xA0  
Command Packet:  
This command determines  
which volume-level  
EEPROM variable will  
be affected by the AODI  
(<0xA2>), AODD (<0xA3>),  
and AOAV (<0xA4>)  
commands.  
AODI p  
0xA2  
Command Packet:  
Response Packet:  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
The controller sends only  
one <Param> character in  
the command packet. The the response packet. The  
possible values are shown  
below:  
The CAT 860 sends two  
<Param> characters in  
possible values are shown  
below:  
0x80 = Reserved  
If the command is properly  
received, the CAT 860  
responds by repeating back  
the command packet where  
the <Param> character  
contains the selection  
status.  
0x81 = one 1dB step  
0x82 = two 1dB steps  
0x83 = three 1dB steps  
0x84 = four 1dB steps  
0x85 = five 1dB steps  
0x86 = six 1dB step  
<Param> #1:  
0x81 = AUX OUT  
<Param> #2:  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0x81 = AUX OUT**  
** Power up default  
Response Packet:  
The CAT 860 sends only  
one <Param> character in  
the response packet. The  
possible values are shown  
below:  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
0x87 = seven 1dB steps  
0x88 = eight 1dB steps  
0x89 = nine 1dB steps  
0x8A = ten 1dB steps  
0x81 = AUX OUTt  
Power up default is AUX  
selected.  
QUERY SELECTED AUDIO OUTPUT COMMAND  
AOCH?  
0xA1  
Command Packet:  
This command causes the  
CAT 860 to return a query  
response packet where  
the <Param> contains  
the selection status set by  
AOCH (<0xA0>).  
The controller sends no  
<Param> character in the  
command packet.  
0x80 = -79dB  
Definition: This command modifies the volume-level EEPROM variable which  
was selected by the AOCH (<0xA0>) command. The EEPROM variable is  
incremented by the amount indicated in the <param> character.  
Response Packet:  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
The CAT 860 sends only  
one <Param> character in  
the response packet. The  
possible values are shown  
below:  
Afterwards, the value in the EEPROM variable is unconditionally loaded into the  
corresponding volume control hardware register. This overrides any prior mute  
operation.  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the first of two replacement <Param> characters  
contains the selection status set by AOCH (<0xA0>) and the second contains the  
resultant value stored in the volume-level EEPROM variable which was modified  
by this command.  
0x81 = AUX OUT  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
For the audio outputs, the power up default values for all volume-level EEPROM  
variables is set for 0dB.  
56  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
8. SET ABSOLUTE VOLUME FOR SELECTED AUDIO OUTPUT COMMAND  
7. DIFFERENTIALLY DECREASE VOLUME FOR SELECTED AUDIO OUTPUT  
COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
AOAV p  
0xA4  
Command Packet:  
Response Packet:  
AODD p 0xA3  
Command Packet:  
Response Packet:  
The controller sends only  
one <Param> character in  
the command packet. The the response packet. The  
possible values are shown  
below:  
The CAT 860 sends two  
<Param> characters in  
The controller sends only  
one <Param> character in  
the command packet. The the response packet. The  
possible values are shown  
below:  
The CAT 860 sends two  
<Param> characters in  
possible values are shown  
below:  
possible values are shown  
below:  
0xCF = 0 dB  
<Param> #1:  
0x81 = AUX OUT  
<Param> #2:  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0x81 = one 1dB step  
0x82 = two 1dB steps  
0x83 = three 1dB steps  
0x84 = four 1dB steps  
0x85 = five 1dB steps  
0x86 = six 1dB step  
<Param> #1:  
0x81 = AUX OUT  
<Param> #2:  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB**  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0x87 = seven 1dB steps  
0x88 = eight 1dB steps  
0x89 = nine 1dB steps  
0x8A = ten 1dB steps  
0x80 = -79dB  
** Power up default  
0x80 = -79dB  
0x80 = -79dB  
Definition: This command modifies the volume-level EEPROM variable which  
was selected by the AOCH (<0xA0>) command. The EEPROM variable is set the  
value indicated in the <param> character.  
Definition: This command modifies the volume-level EEPROM variable which  
was selected by the AOCH (<0xA0>) command. The EEPROM variable is  
decremented by the amount indicated in the <param> character.  
Afterwards, the value in the EEPROM variable is unconditionally loaded into the  
corresponding volume control hardware register. This overrides any prior mute  
operation.  
Afterwards, the value in the EEPROM variable is unconditionally loaded into the  
corresponding volume control hardware register. This overrides any prior mute  
operation.  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the first of two replacement <Param> characters  
contains the selection status set by AOCH (<0xA0>) and the second contains the  
resultant value stored in the volume-level EEPROM variable which was modified  
by this command.  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the first of two replacement <Param> characters  
contains the selection status set by AOCH (<0xA0>) and the second contains the  
resultant value stored in the volume-level EEPROM variable which was modified  
by this command.  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
For the audio inputs, the power up default values for all output volume-level  
EEPROM variables is set for 0dB (i.e. maximum output).  
For the audio outputs, the power up default values for all output volume-level  
EEPROM variables is set for 0dB (i.e. maximum output).  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the Infrared Source Group  
1. SELECT INFRARED INPUT COMMAND  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the A/V Source Group Cont’d  
9. QUERY ABSOLUTE VOLUME FOR SELECTED AUDIO OUTPUT COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
AOAV?  
0xA5  
Command Packet:  
This command causes the  
CAT 860 to return a query  
response packet where  
the first of two <Param>  
characters contains the  
selection status set by  
AOCH (<0xA0>) and the  
second contains the value  
stored in the volume-level  
EEPROM variable selected  
by the AOCH (<0xA0>)  
command.  
IICH p  
0xB0  
Command Packet:  
This command determines  
which volume-level EEPROM  
variable will be affected  
by the IIDI (<0xB2>), IIDD  
(<0xB3>), and IIAV (<0xB4>)  
commands.  
The controller sends no  
<Param> character in the  
command packet.  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
Response Packet:  
The CAT 860 sends two  
<Param> characters in  
the response packet. The  
possible values are shown  
below:  
If the command is properly  
received, the CAT 860  
responds by repeating back  
the command packet where  
the <Param> contains the  
selection status  
0x80 = IR Channel A**  
0x81 = IR Channel B  
** Power up default  
Response Packet:  
<Param> #1:  
0x81 = AUX OUT  
<Param> #2:  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
The CAT 860 sends only  
one <Param> character in  
the response packet. The  
possible values are shown  
below:  
Power up default is IR  
Channel A selected.  
0x80 = IR Channel A  
0x81 = IR Channel B  
QUERY SELECTED INFRARED INPUT COMMAND  
IICH?  
0xB1  
Command Packet:  
This command causes the  
CAT 860 to return a query  
response packet where  
the <Param> contains the  
selection status set by IICH  
(<0xB0>).  
The controller sends no  
<Param> character in the  
command packet.  
0x80 = -79dB  
Response Packet:  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
The CAT 860 sends only  
one <Param> character in  
the response packet. The  
possible values are shown  
below:  
0x80 = IR Channel A  
0x81 = IR Channel B  
60  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the Infrared Source Group Cont’d  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the Infrared Source Group Cont’d  
3. DIFFERENTIALLY DECREASE VOLUME FOR SELECTED INFRARED INPUT  
COMMAND  
2. DIFFERENTIALLY INCREASE VOLUME FOR SELECTED INFRARED INPUT  
COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
IIDI p  
0xB2  
Command Packet:  
Response Packet:  
IIDD p  
0xB3  
Command Packet:  
Response Packet:  
The CAT 860 sends two  
<Param> characters in  
the response packet. The  
possible values are shown  
below:  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
The CAT 860 sends two  
<Param> characters in  
the response packet. The  
possible values are shown  
below:  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
<Param> #1:  
0x80 = IR Channel A  
0x81 = IR Channel B  
<Param> #2:  
0xCF = 0 dB  
0x81 = one 1dB step  
0x82 = two 1dB steps  
0x83 = three 1dB steps  
0x84 = four 1dB steps  
0x85 = five 1dB steps  
0x86 = six 1dB step  
<Param> #1:  
0x80 = IR Channel A  
0x81 = IR Channel B  
<Param> #2:  
0xCF = 0 dB  
0x81 = one 1dB step  
0x82 = two 1dB steps  
0x83 = three 1dB steps  
0x84 = four 1dB steps  
0x85 = five 1dB steps  
0x86 = six 1dB step  
0xCE = -1dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0x87 = seven 1dB steps  
0x88 = eight 1dB steps  
0x89 = nine 1dB steps  
0x8A = ten 1dB steps  
0x87 = seven 1dB steps  
0x88 = eight 1dB steps  
0x89 = nine 1dB steps  
0x8A = ten 1dB steps  
0x80 = -79dB  
0x80 = -79dB  
Definition: This command modifies the volume-level EEPROM variable  
which was selected by the IICH (<0xB0>) command. The EEPROM variable is  
incremented by the amount indicated in the <Param> character.  
Definition: This command modifies the volume-level EEPROM variable  
which was selected by the IICH (<0xB0>) command. The EEPROM variable is  
decremented by the amount indicated in the <param> character.  
Afterwards, the value in the EEPROM variable is unconditionally loaded into the  
corresponding volume control hardware register. This overrides any prior mute  
operation.  
Afterwards, the value in the EEPROM variable is unconditionally loaded into the  
corresponding volume control hardware register. This overrides any prior mute  
operation.  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the first of two replacement <Param> characters  
contains the selection status set by IICH (<0xB0>) and the second contains the  
resultant value stored in the volume-level EEPROM variable which was modified  
by this command.  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the first of two replacement <Param> characters  
contains the selection status set by IICH (<0xB0>) and the second contains the  
resultant value stored in the volume-level EEPROM variable which was modified  
by this command.  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
For the audio inputs, the power up default values for all six input volume-level  
EEPROM variables is set for -40dB.  
For the audio inputs, the power up default values for all six input volume-level  
EEPROM variables is set for -40dB.  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the Infrared Source Group Cont’d  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Audio Input Functions for the Infrared Source Group Cont’d  
4. SET ABSOLUTE VOLUME FOR SELECTED INFRARED INPUT COMMAND  
5. QUERY ABSOLUTE VOLUME FOR SELECTED INFRARED INPUT  
COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
IIAV p  
0xB4  
Command Packet:  
Response Packet:  
IIAV?  
0xB5  
Command Packet:  
Response Packet:  
The CAT 860 sends two  
<Param> characters in  
the response packet. The  
possible values are shown  
below:  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
The CAT 860 sends two  
<Param> characters in  
the response packet. The  
possible values are shown  
below:  
The controller sends no  
<Param> character in the  
command packet.  
<Param> #1:  
0x80 = IR Channel A  
0x81 = IR Channel B  
<Param> #2:  
0xCF = 0 dB  
0xCF = 0 dB  
<Param> #1:  
0x80 = IR Channel A  
0x81 = IR Channel B  
<Param> #2:  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB**  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0xCE = -1dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0xCD = -2dB  
0xCC = -3dB  
0xA7 = -40dB  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0x80 = -79dB  
** Power up default  
0x80 = -79dB  
0x80 = -79dB  
Definition: This command modifies the volume-level EEPROM variable which  
was selected by the IICH (<0xB0>) command. The EEPROM variable is set the  
value indicated in the <param> character.  
Definition: This command causes the CAT 860 to return a query response packet  
where the first of two <Param> characters contains the selection status set by  
IICH (<0xB0>) and the second contains the value stored in the volume-level  
EEPROM variable selected by the IICH (<0xB0>) command.  
Afterwards, the value in the EEPROM variable is unconditionally loaded into the  
corresponding volume control hardware register. This overrides any prior mute  
operation.  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the first of two replacement <Param> characters  
contains the selection status set by IICH (<0xB0>) and the second contains the  
resultant value stored in the volume-level EEPROM variable which was modified  
by this command. If the command is not received properly, the CAT 860  
responds by sending a <NACK> character.  
For the audio inputs, the power up default values for all six input volume-level  
EEPROM variables is set for -40dB.  
64  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Input Muting Functions Group  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
Input Muting Functions Group Cont’d  
1. MUTE SELECTED AUDIO INPUT COMMAND  
2. UN-MUTE SELECTED AUDIO INPUT COMMAND  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
MSAI p  
0xD0  
Command Packet:  
Response Packet:  
UMSI p  
0xD1  
Command Packet:  
Response Packet:  
The CAT 860 sends only  
one <Param> character in  
the response packet. The  
possible values are shown  
below:  
The CAT 860 sends only  
one <Param> character in  
the response packet. The  
possible values are shown  
below:  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
The controller sends only  
one <Param> character in  
the command packet. The  
possible values are shown  
below:  
0x80 = TV/VCR  
0x80 = TV/VCR  
0x80 = TV/VCR  
0x80 = TV/VCR  
0x81 = CD/DVD  
0x82 = COMPUTER  
0x83 = AUX IN  
0x81 = CD/DVD  
0x82 = COMPUTER  
0x83 = AUX IN  
0x81 = CD/DVD  
0x82 = COMPUTER  
0x83 = AUX IN  
0x81 = CD/DVD  
0x82 = COMPUTER  
0x83 = AUX IN  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x84 = IR Channel A  
0x85 = IR Channel B  
0x86 = TV/VCR, CD/DVD,  
COMPUTER, & AUX IN  
0x86 = TV/VCR, CD/DVD,  
COMPUTER, & AUX IN  
0x86 = TV/VCR, CD/DVD,  
COMPUTER, & AUX IN  
0x86 = TV/VCR, CD/DVD,  
COMPUTER, & AUX IN  
0x87 = IR Channel A & IR  
Channel B  
0x87 = IR Channel A & IR  
Channel B  
0x87 = IR Channel A & IR  
Channel B  
0x87 = IR Channel A & IR  
Channel B  
0x88 = All Inputs  
0x88 = All Inputs**  
0x88 = All Inputs  
0x88 = All Inputs  
**Power up default, and may  
be needed after using the  
Basic Command Set.  
Definition: This command sends the -79dB setting into the volume control  
hardware register(s) corresponding to the value in the <param> character. None  
of the corresponding volume-level EEPROM variables are modified.  
Definition: Based on the value in the <param> character, this command  
unconditionally sends the appropriate EEPROM variable content(s) into the  
corresponding volume control hardware register(s). None of the volume-level  
EEPROM variables are modified.  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the <Param> character contains the mute selection  
status.  
If the command is not received properly, the CAT 860 responds by sending a  
<NACK> character.  
If the command is properly received, the CAT 860 responds by repeating back  
the command packet where the <Param> character contains the un-mute  
selection status.  
If the command is not received properly the CAT 860 responds by sending a  
<NACK> character.  
Note: The un-mute operations will override any mute operations performed as  
part of any command from the Basic Command Set.  
66  
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14. RS-232 SERIAL INTERFACE  
COMMAND DEFINITION CONT’D  
13. RS-232 SERIAL INTERFACE  
PROGRAMMING CONT’D  
ADVANCED COMMAND SET FOR AUDIO MIXER OPERATIONS CONT’D  
System Management Functions Group  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
1. QUERY MODEL AND SOFTWARE VERSION COMMAND  
Audio Input Functions  
AIDD p 0x93  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
(Controller sends only one Differentially decrease  
param per CMD.)  
volume for selected  
audio input channel.  
MREV?  
0xC0  
Command Packet:  
Response Packet:  
0x81 = one 1dB step  
0x82 = two 1dB steps  
0x83 = three 1dB steps  
0x84 = four 1dB steps  
0x85 = five 1dB steps  
0x86 = six 1dB steps  
0x87 = seven 1dB steps  
0x88 = eight 1dB steps  
0x89 = nine 1dB steps  
0x8A = ten 1dB steps  
This command causes  
the CAT 860 to return a  
query response packet  
containing up to sixteen  
<param> characters. Each  
<param> value represents  
one ASCII character of a  
string indicating the product  
model and software version.  
(Controller sends no param  
value.)  
CAT 860 responds with  
<ACK> only.  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
AIAV p  
0x94  
(Controller sends only one Set absolute volume for  
param per CMD.)  
selected audio input  
channel.  
0xCF = 0 dB  
0xCE = -1dB  
0xCD = -2dB  
0xCC = -3dB  
CAT 860 responds with  
<ACK> only.  
0x83 = -76dB  
0x82 = -77dB  
0x81 = -78B  
0x80 = -79dB  
PING CAT 860 COMMAND  
(These are the values  
returned in the <Param>  
character of a query  
PING  
0xC1  
(Controller sends no param This command causes the  
CAT 860 to respond with  
value.)  
<ACK> only.  
response from the 860iR.)  
If the command is not  
received properly, the CAT  
860 responds by sending a  
<NACK> character.  
AIAV?  
0x95  
Controller sends no param Query absolute volume  
value.  
for selected audio input  
channel.  
CAT 860 returns one  
param in the response  
packet  
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SECTION 3:  
13. RS-232 SERIAL INTERFACE  
PROGRAMMING CONT’D  
OPTIONAL ACCESSORIES  
<CMD>  
Symbol  
Hex  
Value  
<Param> Value  
Definition  
OPTIONAL REDMIKE VC (Volume Control)  
Controls and Connections  
Audio Input Functions  
MREV? 0xC0  
Controller sends no param Query model and  
value.  
software version.  
(Param string in response  
packet will be composed  
of up to sixteen  
ACSII alphanumeric  
characters.)  
1
4
5
PING  
0XC1 Controller sends no param Ping CAT 860iR.  
value.  
6
2
CAT 860 responds with  
<ACK> only.  
7
3
8
1. POWER /MUTE BUTTON  
source to wirelessly transmit  
audio to be played through the  
system. Alternatively, an external  
microphone can be connected.  
2. POWER/LOW BATTERY  
INDICATOR: A BLUE light  
indicates the REDMIKE VC is on  
and fully charged. A RED light  
indicates a charge is needed.  
6. CHANNEL SELECT SWITCH (CH  
A/B): Use this to choose Channel  
A or B. If you are using a single  
microphone, we recommend using  
Channel A.  
3. BATTERY COMPARTMENT: To  
open, slide the door downward.  
The battery should only be  
replaced by a Lightspeed AA  
rechargeable sensing battery  
(part # BA-NH2A27).  
7. VOLUME CONTROLS (UP -  
DOWN)  
8. CHARGER CONTACTS (+ -):  
These contacts interface with the  
charging tabs when the REDMIKE  
VC is placed in the BC-RMCC  
cradle charger.  
4. YELLOW PROTECTIVE TAB:  
Slide the battery compartment  
door and remove this disposable  
protective tab before use.  
5. AUDIO/MICROPHONE INPUT:  
Use this input to plug in a laptop,  
MP3 player or other audio  
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REDMIKE VC : Charging  
OPTIONAL LT-71: Controls and Connections  
Before use, the REDMIKE VC should  
be charged. See page 20 and  
follow the same instructions for the  
REDMIKE.  
4
1
REDMIKE VC : Initial Set-up  
LT-71  
LT-71  
2
5
6
See page 17 and follow the same  
instructions for the REDMIKE to setup  
the REDMIKE VC.  
3
NOTE: A nominal volume level must be  
set on the CAT 805iX before adjusting  
controls on the REDMIKE VC.  
The teacher can now use the controls  
on the REDMIKE VC to adjust the  
volume level from anywhere in the  
room. The microphone volume control  
has 4 steps up and 4 steps down from  
the mid point (9 levels total).  
1. ON/OFF/MUTE Switch  
5. AUXILIARY (AUX): Plug a laptop,  
MP3 player or other audio source  
into this jack to wirelessly transmit  
the audio signal to be played  
through the system.  
2. CHANNEL SELECT SWITCH (CH  
A/B): Use this to choose Channel  
A or B. If you are using a single  
microphone, we recommend using  
Channel A.  
6. CHARGER INPUT (CHARGER):  
Plug the charging cable from the  
charger into this jack for daily  
3. POWER/CHARGE INDICATOR: A  
BLUE light indicates the REDMIKE  
VC is on and fully charged. A RED  
light indicates a charge is needed.  
charging. The LED on the front will  
glow RED to indicate charging.  
4. EXTERNAL MICROPHONE  
INPUT (MIC): Use the 3.5mm  
MIC jack for the optional TK-250  
headset microphone (part# MC-  
TK250LTM).  
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LT-71: Charging  
LT-71: Initial Set-up  
1. Ensure that the LT-71 is turned OFF.  
Once the LT-71 is charged, follow these steps to set it up for use.  
2. Make sure the cradle charger  
is plugged into a wall outlet.  
Connect one end of the charging  
cable into the jack labeled  
1. Turn the CAT 860 power switch to  
the ON position. The RED LED on  
the switch will glow.  
CHARGER on the side of the LT-71  
and plug the other end into the  
charging jack on the rear of the  
REDMIKE cradle charger. The  
LT-71’s rechargeable batteries are  
factory installed. The LED on the  
front of the LT-71 will glow RED  
when charging.  
2. Turn on the LT-71 and set the  
operating channel to “B”.  
3. Slip the LT-71 with lanyard around  
the neck and position the top of  
the microphone just below the  
collarbone. NOTE: Positioning  
of the LT-71 is critical for proper  
3. Leave the LT-71 plugged in  
overnight (8–10 hrs.) to obtain a  
full charge.  
LT-71  
volume adjustment.  
4. While speaking in a normal voice  
slowly increase the volume for  
Channel B on the CAT 860 until  
your voice is barely audible.  
REMEMBER: This equipment  
supplements the user’s voice  
so they are able to speak in a  
conversational tone. Having the  
volume set too high will result in  
feedback and listener fatigue.  
NOTE: If the system was purchased  
without a REDMIKE or REDMIKE VC,  
the LT-71 will utilize a charging cable.  
Simply connect the charging cables  
to the jacks labeled CHARGER on  
the back of the amplifier and connect  
the opposite ends to the jacks on the  
back of the  
cradle charger.  
Front Panel  
RS-232  
Control Select  
1
2
+
-
-
+
RS-232 IN  
74  
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REDMIKE Share: Controls and Connections  
REDMIKE Share: Charging  
1. Ensure that the REDMIKE Share is  
turned OFF.  
3. Plug the other end into the  
charging jack on the rear of the  
cradle charger.  
2. Make sure the cradle charger  
is plugged into a wall outlet.  
Connect one end of the charging  
cable into the jack labeled  
CHARGER on the bottom of the  
REDMIKE Share.  
4. The LED on the microphone will  
glow RED to indicate charging.  
5. Leave the REDMIKE Share  
plugged in overnight (8-10 hours)  
to obtain a full charge.  
3
2
1
4
5
1. POWER SWITCH  
2. POWER/CHARGE INDICATOR:  
this light glows blue when turned  
on and turns off to indicate low  
battery level. When charging, the  
light glows red.  
NOTE: If the system was purchased  
without a REDMIKE or REDMIKE VC,  
the REDMIKE Share will utilize the  
charger jacks on the back of the CAT  
860.  
3. AUDIO INPUT: plug a laptop,  
MP3 player or other audio device  
into this jack to wirelessly transmit  
the audio signal to be played  
through the system.  
Front Panel  
R
4. CHANNEL SELECT SWITCH  
(CH A/B): Located in the battery  
compartment, this switch is set to  
Channel B at the factory.  
2
RS-232 IN  
5. CHARGER INPUT: Plug the  
charging cable from the REDMIKE  
cradle charger or into this jack.  
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REDMIKE Share: Initial Set-up  
INITIAL SET-UP:  
OPTIONAL IR MEDIA CONNECTOR  
1. Ensure the CAT 860 is ON. The  
RED LED on the power switch will  
glow.  
1. Turn off the second microphone.  
The iR Media Connector uses  
the same channel (channel B) as  
the optional second microphone  
(REDMIKE, LT-71, or REDMIKE  
Share). As a result, they cannot be  
used simultaneously. If you have  
a second microphone, turn it off  
before transmitting audio from the  
iRMC.  
2. Turn on the REDMIKE Share by  
sliding the switch to the top  
position.  
3. Grip the barrel in the center  
section.  
4. While speaking in a normal voice,  
increase the B VOLUME level until  
your voice is barely audible.  
NOTE: If you adjust the CH B  
volume on the classroom audio  
system, you will also be changing  
the volume for your second  
microphone. Return the CH B  
volume knob to the original  
position before turning the second  
microphone back on.  
REMEMBER: This equipment  
is designed to supplement  
and distribute the user’s voice  
so they are able to speak in a  
conversational tone. Having the  
volume set too high will result in  
feedback and listener fatigue.  
2. The iR Media Connector volume  
is preset for most standard audio  
signals. If you need to turn the  
volume up or down, follow this  
procedure:  
A. Adjust the volume at the  
computer, television, or other  
audio source if possible.  
B. If the audio source does not  
have a volume control (such  
as many DVD players) adjust  
the volume at the iRMC.  
C. If the first two options do not  
give optimum volume level,  
the last place to adjust the  
volume is the CH. B Volume  
on the CAT 860.  
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OPTIONAL IR MEDIA CONNECTOR AUDIO  
INTEGRATION  
SECTION 4:  
TROUBLESHOOTING  
The iRMC is designed to integrate with the CAT 860 and multiple audio sources,  
allowing other instructional technologies to be clearly heard throughout the  
classroom.  
COMMON PROBLEMS AND SOLUTIONS  
Video In  
r  
Projector  
Note: Most problems are directly related to low battery power. Please run  
through the “Battery Check” items first. For remaining troubleshooting, use  
known good, fully-charged batteries.  
IR Sensor  
ALL PROBLEMS: Most Problems are  
•
If the optional iR media connection  
is in use, set the microphone to  
Channel A.  
related to low battery power.  
IR Transmission  
SOLUTION: Battery Check  
Teacher’s  
Microphone  
PROBLEM: Low Volume or Feedback  
•
Confirm batteries are charged  
each night.  
SOLUTION: Follow these steps to  
Audio Out  
VGA Out  
eliminate low volume or feedback.  
•
Confirm proper batteries are  
used. The REDMIKE requires  
the Lightspeed BA-NH2A27  
rechargeable sensing battery for  
proper charging. The REDMIKE  
Share uses the BA-NH2APK  
rechargeable battery pack. The  
LT-71 requires two BA-NH1 AA  
rechargeable batteries.  
Speaker(s)  
•
•
Ensure microphone is positioned  
appropriately, just below the collar  
bone.  
Audio In  
Video Out  
Audio Out  
Check volume level on the  
amplifier. If the volume is too  
high, feedback will occur. Adjust  
accordingly.  
iR Media Connector  
Audio Out  
Video Out  
DVD/VCR  
Cat855  
•
Adjust the volume level on the  
•
•
Make sure the microphones are  
turned off while charging so a full  
charge is attained. Full charge will  
last eight hours.  
back of the optional REDMIKE VC.  
PROBLEM: No Sound From Speaker  
SOLUTION: Follow these steps to  
produce sound from speakers.  
Inspect the battery contacts. Clean  
and adjust if necessary.  
•
•
Turn the CAT 860 on. Confirm that  
the POWER light located on the  
front panel switch is on.  
PROBLEM: Hearing Static  
OTHER OPTIONAL ACCESSORIES  
SOLUTION: Follow these steps to  
IRMC  
Infrared Media Connector  
Confirm signal is being received at  
the CAT 860. The IR signal light will  
be RED indicating a signal is being  
received.  
eliminate static.  
MC-TK250M  
AC-TCC7  
CA-RCA6  
CA-MSC3535  
Noise-canceling headset microphone  
Charging cable for REDMIKE Share and LT71  
6’ dual RCA audio cable  
•
Ensure sensor is in optimum  
location (refer to sensor placement  
in manual). A single sensor will  
cover a 1600 sq. ft. enclosed  
classroom.  
•
Confirm that REDMIKE is turned  
on. There will be a BLUE LED on  
the microphone to indicate it is  
powered on.  
3.5mm to 3.5mm stereo audio cable  
•
Ensure that no other REDMIKE/LT-  
71/REDMIKE Share is operating on  
the same channel.  
If you review these instructions and still have questions, write down the  
serial number and model number of your system and call Lightspeed  
Technical Services at 800.732.8999, 5 a.m. – 5 p.m., PST.  
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TIPS TO OBTAIN OPTIMUM AUDIO  
PERFORMANCE  
SECTION 5:  
WARRANTY, SAFETY &  
SPECIFICATIONS  
FIVE-YEAR LIMITED WARRANTY  
•
Speak in a natural voice. A normal  
conversational speech level will  
provide an adequate signal.  
It is not necessary to increase  
the intensity of your voice—the  
audio system provides adequate  
amplification (approximately 5 – 10  
dB) above ambient room noises.  
Lightspeed Classroom Audio Systems are guaranteed against malfunction due to  
defects in materials and workmanship for a period of FIVE (5) YEARS, beginning  
at the date of the purchase invoice. If such malfunction occurs, the product  
will be repaired or replaced (at Lightspeed’s option) without charge during the  
warranty period.  
•
•
Avoid wearing jewelry that may rub  
or bump against the microphone.  
Turn the REDMIKE off during  
private conversations with a  
student, parent, or other classroom  
visitor. You can also cover the LED  
lens on top of the REDMIKE to  
block the signal.  
Lightspeed’s Warranty Exchange Program applies to all infrared systems within the  
five (5) year warranty period. If an infrared product or component has an issue  
that requires service, a refurbished replacement will immediately be sent to the  
customer to minimize downtime. Customers will receive the exchange product(s)  
or component(s) within 2-3 days. A prepaid return label will be included with  
exchanged products so original malfunctioned equipment can be returned to  
Lightspeed. Any exchanged equipment will remain covered under the original  
five (5) year warranty.  
•
Recharge batteries each night.  
When recharged nightly, operating  
time (actual usage) for the  
transmitters will last through a  
typical school day.  
1. Warranty on infrared microphones is FIVE (5) YEARS.  
2. Warranty on Lightspeed NiMH rechargeable batteries is one (1) year.  
3. Prepaid shipping label provided by Lightspeed for warranty repairs within the  
U.S. Customers outside the U.S. should refer to the Lightspeed website (www.  
lightspeed-tek.com) for warranty repair instructions.  
4. Warranty does not extend to finish, appearance items, or malfunctions due  
to abuse or operation other than specified conditions, nor does it extend to  
incidental or consequential damages. Repair by other than Lightspeed or its  
authorized service agencies will void this guarantee. Information on authorized  
service agencies is available from Lightspeed Technologies, Inc.  
Our Service Department (800.732.8999, 5 a.m. – 5 p.m., PST) will handle all your  
repair/replacement needs.  
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SAFETY WARNINGS AND CERTIFICATIONS  
CAUTION  
RISK OF ELECTRIC SHOCK DO NOT OPEN  
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK  
DO NOT REMOVE COVER (OR BACK)  
NO USER-SERVICEABLE PARTS INSIDE  
REFER SERVICING TO QUALIFIED PERSONNEL  
CERTIFICATIONS  
This product is listed to UL standards  
and requirements for electrical safety by  
Audio/Video  
Underwriters Laboratories Inc.  
Apparatus 44VE  
This product conforms with the essential  
requirements of the following European Union  
Directives: 89/336/EEC, 92/31/EEC, 93/68/  
EED, and 2004/108/EC Electromagnetic  
Compatibility Directives.  
Lightspeed Technologies launched a formal  
product recycle program in Europe that  
complies with the European Union Directive  
2002/96/EC on Waste Electrical and Electronic  
Equipment (“WEEE Directive”). Please visit our  
website at www.Lightspeed-tek.com for more  
information.  
This product is manufactured using lead-free  
processes and is free of other materials  
harmful to the environment. It conforms to the  
most stringent new European guidelines for  
consumer products (RoHS).  
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SYSTEM SPECIFICATIONS  
OVERALL SPECIFICATIONS  
Power Output  
12 W per channel (24 W total)  
Amplifier Frequency Response  
Carrier Frequencies (IR)  
Signal-to-Noise Ratio  
60 Hz to 20 kHz 3 dB  
2.06/2.54; 3.2/3.7 MHz  
> 73 dB  
Image and Spurious Rejection  
> 70 dB  
AMPLIFIER SPECIFICATIONS  
Receiver Type  
Superheterodyne  
6 µV for 60 dB S/N  
> 70 dB  
8.6” x 6.8” x 2.2”  
2.75 lbs.  
Receiver Sensitivity  
Image and Spurious Rejection  
Dimensions (W x D x H)  
Weight  
TRANSMITTER SPECIFICATIONS  
REDMIKE and REDMIKE VC  
Audio Distortion  
< 1 %  
Built-in Microphone  
Battery Power (1-year warranty)  
Audio Input  
Unidirectional Electret  
1 AA NiMH Rechargeable Sensing  
3.5 mm  
Dimensions (W x D x H)  
Weight  
0.9” x 1.0” x 3.5”  
2.1 oz.  
LT-71 LightMic  
Audio Distortion  
< 1 %  
Built-in Microphone  
Battery Power (1-year warranty)  
Audio Inputs  
Unidirectional Electret  
2 AA NiMH Rechargeable  
Mic Level 3.5 mm, Line Level 3.5 mm  
Dimensions (W x D x H)  
Weight  
1.375” x .75” x 4.625”  
3.7 oz.  
REDMIKE Share Handheld Microphone  
Audio distortion  
<1%  
Built-in Microphone  
Battery Power (1-year warranty)  
Uni-directional electret  
2 AA NiMH Rechargeable  
Battery Pack  
Audio Input  
3.5 mm  
Dimensions (W x D x H)  
Weight (with batteries)  
8.25” x 1.3” x 1.3”  
7.9 oz  
ISR SENSOR SPECIFICATIONS  
Operating Range  
Cable  
Mounting  
Dimensions (W x D x H)  
Weight  
Up to 1600 square feet  
50 ft., Plenum-rated Cat 5e  
Ceiling clip/Wall bracket  
9.4” x 1.4” x 5.2”  
14.3 oz.  
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