3M Intercom System 2470 User Manual

Wired Intercom System  
Performance Series  
Models 2470 and 2475  
Installation Instructions  
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Performance Series  
Front Matter  
Revision Record  
Reason For Change  
Date  
Revision  
2/02/02  
4/08/02  
4/11/02  
4/15/02  
4/19/04  
01  
02  
03  
A
Preliminary manual released  
Preliminary second draft  
Preliminary third draft  
Manual Released  
B
Revisions made  
i
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Performance Series  
Front Matter  
Table of Contents  
System Components.................................................................................... 1  
I/O Card and Noise Reduction Module Installation................................ 2  
I/O Card Installation ................................................................................................ 2  
3MModel A125, Noise Reduction Module, Installation (Optional).................... 3  
Component Placement................................................................................ 4  
Communications Controller..................................................................................... 4  
Power Supply........................................................................................................... 4  
Call Stations............................................................................................................. 5  
Station Selectors ...................................................................................................... 5  
Wiring the System....................................................................................... 6  
Configuration Worksheets....................................................................................... 7  
Wiring Call Stations ................................................................................................ 7  
Wiring Station Selectors.......................................................................................... 7  
Wiring Communications Controller ........................................................................ 8  
Initializing the System ................................................................................ 9  
System Mode Selection: .......................................................................................... 9  
Initialization instructions for Pump Mode (factory default).................................... 10  
Initialization Instructions for Island Mode .............................................................. 10  
Programming the System ........................................................................... 11  
Programming State .................................................................................................. 11  
Error Message.......................................................................................................... 12  
Parameter Selection ................................................................................................. 12  
Keypad Function Definitions (for Text entry) (Programming State) ...................... 15  
Adjusting the System .................................................................................. 17  
Inbound Audio Volume Level................................................................................. 17  
VOX (Voice Operated Transmission) Sensitivity Level ......................................... 17  
Outbound Talk Volume Level................................................................................. 17  
Outbound Music/Messaging Volume Level (Only for systems that use  
Music/Messaging) ...................................................................................... 18  
Testing the Functions............................................................................................... 18  
Configuration Worksheets ......................................................................... 19  
ii  
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Performance Series  
System Components  
System Components  
The Performance Series Intercom System consists of:  
A minimum of one Model 2475 Station Selector  
One Model 2470 Communications Controller  
A maximum of 24 Call Stations  
The system provides two-way audio communication between the Station Selector and the 24 call stations. The  
system also provides communications between station selectors. It is a single channel, half-duplex, wired system.  
Figure 1 shows the components.  
Figure 1. D-2400 Intercom System Components  
Material Required (Not Supplied)  
Assortment of screws, anchors, and cable clamps.  
Sufficient twisted pair sets of audio cable to connect other components such as Station Selector, Call Stations,  
etc. See Figure 1.  
!
Important  
The wires for the speaker connection must be twisted pairs and shielded for proper operation.  
1
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Performance Series  
I/O Board and Noise Reduction Module  
Installation  
I/O Card and Noise Reduction Module Installation  
Be sure the system is powered off!  
1. Remove 4 screws on each side of the Communications  
I/O Card Installation  
Controller cover.  
2. Remove cover.  
Note: Insert I/O cards beginning from connector J5. Add  
additional I/O cards sequentially (J6, J7, etc.).  
3. Remove slot cover and mounting screw. Refer to Figure 2.  
4. Remove all terminal blocks from edge of I/O card.  
5. Insert I/O card into I/O connector by pressing gently into  
place.  
6. Use slot cover mounting screw to secure I/O card to  
chassis.  
7. Insert terminal blocks into I/O card station ports.  
8. Repeat until all I/O cards are installed.  
9. Replace cover and 8 screws.  
Figure 2. I/O Card Installation  
!
Important  
A larger power supply must be used if more than four (4).  
I/O cards are installed. Use D2470-20 power supply Part  
Number 78-8117-4153-3 when more than four (4) I/O cards  
are installed.  
After the larger power supply is installed, Remove the  
following Warning label:  
WARNING  
Do not add any I/O cards to these slots  
unless power supply output rating exceeds 4  
Amps. See installation instructions for  
details.  
Note  
If adding additional I/O cards after initial installation, you must re-  
program parameter 03, “max stations.”  
2
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Performance Series  
I/O Card and Noise Reduction Module  
Installation  
Be sure the system is powered off!. Refer to Figure 3.  
3MModel A125, Noise Reduction  
Module, Installation (Optional)  
The optional 3M™ A125 Noise Reduction board (3M part  
number 78-9236-6453-2) improves the inbound intelligibility  
of an intercom system by reducing environmental background  
noise from vehicles, airplanes, noisy intersections, wind, etc.  
1. On the A125 circuit board, set the jumpers and  
switches as follows:  
Set JMP1 and JMP2 to position A.  
Set SW1 number 1 ON  
Set SW1 number 2 ON  
Set SW1 number 3 as desired:  
-- With SW1 number 3 OFF, the A125 is set for  
restaurant noise reduction.  
-- With SW1 number 3 ON, the A125 is set for  
truck stop noise , which provides more noise  
reduction with slightly more voice degradation.  
Set SW1 number 4 as desired:  
-- With SW2 number 4 ON, the higher-end  
frequencies are increased by 3 dB. This should  
be set to the customer’s preference.  
Figure 3. Noise Reduction Module  
Installation  
SW1 numbers 5 and 6 are not used.  
2. Remove 4 screws on each side of Communications  
Controller cover.  
3. Remove cover.  
4. Plug Noise Reduction Module ribbon cable into  
Connector J12.  
5. Use upper and lower mounting brackets to secure  
Noise Reduction Module to Communications  
Controller chassis as shown in Figure 3.  
6. On the Model 2470 circuit board, Set JMP1 to open.  
LED1 (adjacent to JMP1) blinks when noise reduction  
module is active.  
7. Replace cover and 8 screws.  
3
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Performance Series  
Component Placement  
Component Placement  
This section describes placement of the Performance Series Intercom System components:  
Communications Controller  
For proper system operation, locate the Communications Controller:  
1. Near the conduit termination of the Call Station wiring.  
2. Near the power source.  
3. At least 10 feet away from electrical noise sources such as the following:  
-
-
-
large electrical motors (such as air conditioners, freezers, and coolers)  
any electrical components that arc (i.e., relays)  
ballasts (for light fixtures)  
4. In a secure room away from traffic.  
5. Approximately 5 feet above the floor.  
6. Where it is accessible from the top, bottom, and both sides.  
7. In a dry and heated (between 50° and 100° Fahrenheit) location.  
See Figure 4.  
Power Supply  
Locate the power supply as follows:  
1. Install the power supply mounting bracket in a preferred location, as shown in Figure 4.  
2. Insert the power supply transformer into the mounting bracket, as shown in Figure 4.  
Figure 4. Suggested Communications Controller Placement  
4
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Performance Series  
Component Placement  
Call Stations  
For proper system operation, install the Call Stations in locations:  
1. Chosen for ease of use.  
2. At least 48 inches above the pavement.  
Note  
Local codes may dictate placement of call stations.  
Figure 5. Suggested Call Station Placement  
Station Selectors  
For proper system operation, locate the Station Selectors:  
1. At locations chosen for maximum efficiency.  
2. On counters, mounted on pedestals, or mounted on walls.  
3. In dry and heated areas.  
Figure 6. Suggested Station Selector Station Placement  
5
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Performance Series  
Wiring the System  
Wiring the System  
Depending on distance, use twisted pair, 14-22 AWG audio cables when wiring the Wired Intercom System,  
components. Figure 7 shows an overview of the cable types and number of conductors required for each unit.  
Table 1 shows wire gauge required for different distances between components. We recommend installing a  
separate power supply transformer (3M part number 78-8095-0910-8), for each Station Selector located over 100  
feet from the Communications Controller,  
Note:  
The RS 485 cable carries DC power for the Station Selectors, requiring a larger gauge wire.  
Figure 7. Cable and Connection Requirements  
All Audio Wiring  
Distance Between  
RS 485 Cable (only)  
Distance Between  
Wire Gauge  
Components  
Up to-309 feet  
310-493 feet  
494-783 feet  
784-1245 feet  
1246-1980 feet  
Wire Gauge  
Components  
Up to 62 feet  
63-99 feet  
100-157 feet  
158-249 feet  
250-396 feet  
22  
20  
18  
16  
14  
22  
20  
18  
16  
14  
Table 1. Wire Size Requirements  
6
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Performance Series  
Wiring The System  
Configuration Worksheets  
Use Configuration Worksheets 1 through 3 (located at the end of this document) to plan and record your system  
configuration. You can record the system wire locations, wire color scheme, and program settings on the  
worksheets. Store the worksheets inside the cover of the Communications Controller.  
Wiring Call Stations  
Call Station wiring consists of the following for a one-button, four-wire system:  
2 Speaker wires.  
Speaker shield wire (used as Common for buttons).  
Call switch.  
LED wire. (if Call Station contains LED)  
Configuration Worksheet 1 shows how to connect the Call Stations to the proper Communications Controller ports.  
Wiring Station Selectors  
!
Important  
The D-2400 System is powered by one power supply that provides power for the Communications Controller  
and a maximum of three Station Selectors. A separate power supply (3M part number 78-8095-0910-8) must  
be plugged into each Station Selector that exceeds the three Station Selector limit. We recommend installing  
a separate power supply if the cable length from the Station Selector to the Communications Controller  
exceeds 100 feet.  
Wiring Station Selectors involves connecting a minimum of 7 wires: 3 audio wires and 4 power and  
communications wires.  
Figure 8. Connecting Optional Accessories to Station Selector  
Refer to Configuration Worksheets 2 and 3 to determine the specific wires and connections to be made.  
7
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Performance Series  
Initializing the System  
Wiring Communications Controller  
Figure 9. Connecting P3 to Communications Controller  
Refer to Configuration Worksheets 2 and 3 to determine the specific wires and connections to be made.  
8
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Performance Series  
Initializing the System  
Initializing the System  
System Mode Selection:  
Before starting the system Initialization process, you must determine the mode of operation. Check the number of  
speakers at each Multiple Product Dispenser (MPD). Typically, each active side of the MPD is identified as a  
separate pump:  
Number of Speakers  
at MPD  
Mode of Operation to Use  
Island Mode  
1
2
Pump Mode  
Table 2. Determining Mode of Operation  
Figure 10. Pump Mode and Island Mode  
9
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Performance Series  
Initializing the System  
!
Important  
1. Initialization will erase all memorized parameters and restore factory default values.  
2. If Pump Mode (factory default) is desired, initialization is not required.  
3. If software is upgraded, the system must be re-initialized.  
Pump mode assigns each Call Station to a single number (1 through 24).  
Initialization instructions  
Pump mode is used when there are 2 speakers per M.P.D., and each speaker  
serves one side of the dispenser.  
for Pump Mode (factory  
default)  
Procedure 1: Press and hold the ALL CALL key while applying power to the  
Selector.  
Init PUMP Mode  
‘TALK’ = Yes  
1:PUMP MODE  
OR  
Procedure 2: Reset or remove power from the Station Selector using one of  
the following methods:  
a. Unplug the RS485 cable.  
b. Press and hold the STD BY key while entering the numeric code 911.  
Island mode assigns each Call Station to two consecutive numbers (1&2,,  
3&4, …….). Island mode is used where a single speaker serves both sides of a  
dispenser.  
Initialization  
Instructions for Island  
Mode  
Procedure 1: Press and hold the HOLD key while applying power to any  
Selector.  
Init ISLAND Mode  
‘TALK’ = Yes  
OR  
Procedure 2: Reset or remove power from any Station in one of the  
following ways.  
a. Unplug the RS485 cable.  
b. Press and hold the STD BY key while entering the numeric code 911.  
Resetting the Station  
Selector  
(Reset)  
To reset only the station selector:  
1. Press and hold the STD BY key.  
2. Enter the numeric code: 911.  
Resetting the System  
(Reset)  
To reset only the entire system:  
1. Press and hold the STD BY key.  
2. Enter the numeric code: 8642.  
DEFINITIONS:  
1) Power On Reset:  
2) Reset:  
Turning off power, and then turning it back on. Commonly referred to as a “Cold Boot”.  
Restarting the micro controller firmware. Commonly referred to as the “Warm Boot.”  
2) Re-Initialize:  
Over writes the EEPROM memory with factory default values. This process also selects “Pump” or “Island”  
mode of operation  
3) Programming Mode:  
change the EEPROM memory from factory default values to user preferences  
10  
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Performance Series  
Programming the System  
Programming the System  
!
Important  
If you have not selected the mode of operation (Pump or Island) do so now! See System  
Mode Selection.  
Programming State  
To program the Performance Series Intercom System, it is  
necessary to put the system in the programming state. From this  
state, the entire system is configured and all memorized parameters  
are adjusted.  
To enter the programming state, simultaneously:  
Press and hold the STD BY key.  
Enter the numeric code: 97531.  
The display shows:  
3
6
9
1
4
7
2
5
01:Selector ID #  
{01}  
The Parameter #, Parameter Name/Value, and Parameter Value  
fields are as shown below.  
T
A
L
8
Parameter  
Parameter # Name/Value  
M0ENU  
K
01:Selector ID #  
{01}  
SP-389C  
Parameter Value  
The “_ “ indicates cursor position. To move the cursor from one  
field to another, use the Left Arrow and Right Arrow keys.  
Figure 11. D-2400 Keypad  
To input data at the cursor position, do one of the following:  
Use the Up Arrow and Down Arrow keys to scroll to desired  
value.  
Use the 1, 2, 3, 4, 5, 6, 7, 8, 9, 0/Menu keys.  
The STD BY key clears a field to a default value (space for text or  
the default value).  
The HOLD key shifts case for text data.  
The ALL CALL key exits from the programming state and enters  
the Off Line mode.  
!
Important  
All Station Selectors ship from the factory with a default ID number of 15. It is important to  
connect and power up each new Station Selector, ONE STATION SELECTOR AT A TIME,  
when installing a new system. Doing this allows you to change the ID number to a lower  
value (start at 1) and avoid the erratic behavior caused by multiple Station Selectors sharing  
the same ID number.  
11  
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Performance Series  
Programming the System  
Error Message  
The system will display one error message: No Communication.  
This message occurs when there is no communications between the Station  
Selector and Communications Controller. To correct this:  
! E R R O R !  
NO COMMUNICATION  
Be sure Communications Controller is powered on.  
Be sure pins 2 and 3 of J3 on the Communications Controller are  
connected to pins 2 and 3 of J8 (RS-485 connector) on the Station  
Selector. Polarity must be correct!  
Call 3M Technical Service to confirm software compatibility between  
station selector and communication controller.  
Memorized parameters are given below. These parameters are stored in the  
EEPROM. The 16-character by 2-row LCD displays the parameters.  
Parameter Selection  
A number (1 to 15 inclusive). Default = 15. This number must be unique  
relative to all other Station Selector ID numbers used in the system.  
01:Selector ID #  
{01}  
Displays the model of the Communications Controller connected to the Station  
Selector. If no Communications Controller is connected {Undefined} will be  
displayed.  
02:Controller  
{D2400 1-Chnl}  
A number (1 to 24 inclusive). Total number of Call Stations in the system.  
Default = What the Communications Controller senses. Stations are numbered  
starting with 1 up to this value. This value should be adjusted to equal the  
number of speakers connected to the Communications Controller, preventing  
an operator from accessing an unwired Call Station. If installing or removing  
additional I/O cards after the initial installation, you must re-program  
parameter03for each station selector connected to the system.  
03:Max Stations  
{24}  
A value (On, Off). Default = Off.  
04:Silence Calls  
{Off}  
Off = normal operation.  
On = Station Selector will only respond to page requests from other Station  
Selectors. It will not respond to Call Station requests. This is useful for a  
Station Selector placed in a manager’s office. The manager will not hear Call  
Station alerts. He will hear only page requests from employee’s Station  
Selectors.  
A number (1 to 15 inclusive). Default = 08. Adjusts the volume of the Station  
Selector alert tone (Chime or Beep). A value of 15 is the loudest setting.  
05:Alert Volume  
{08}  
Beep or Chime. Default = Chime.  
06:Alert Type  
{Chime}  
12  
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Performance Series  
Programming the System  
A value (On, Off). Default = Off. Enables the VOX (Voice Operated  
Transmission) feature.  
07:VOX Enable  
{Off}  
A number (1 to 15 inclusive). Default = 15 (most sensitive). Adjust this value  
to accommodate the ambient noise level at the Station Selector location. Use a  
lower value for a higher noise environment.  
08:VOX Sensitive  
{15}  
A number (1 to 15 inclusive). Default = 08. The outbound voice volume is  
adjusted for all Call Stations simultaneously. Each Call Station can be  
individually selected. An assistant can be sent out to each Call Station. When  
the Talk key is momentarily pressed, it remains in the Talk state until pressed  
again, and then it remains in the Listen state. This allows the installer to  
communicate with the assistant over the intercom in setting the proper volume  
level.  
09:Talk Vol{10}  
S=01 PUMP # 01  
This value must be adjusted after adjusting Talk volume!  
A number (0 to 15 inclusive). Default = 08. With a value of {00} music will  
be muted.  
10:Music Volume  
{08}  
A value (Off, 1 to 24 inclusive). Default = Off. The Call Station selected here  
has top propriety call in over all other Call Station requests.  
11:Priority{Off}  
S=xy: User Name  
A value (On or Off). Default = On. Enables the 90-second station connection  
time out. If the Talk key is not pressed within 90 seconds, the Station Selector  
returns to the Standby mode.  
12:Auto Standby  
{On)  
A value (Silence or All Listen). Default = Silence. “Silence” selects no  
inbound volume during Standby mode. “All Listen” allows all Call Stations to  
be monitored during Standby mode.  
13:Standby Mode  
{Silence}  
Assignment of Station Selector names (Station Selector numbers 71 through  
85 correspond to Station Selector ID numbers 1 through 15) where xy  
indicates Station Selector number. Default = SELECTOR xy where xy =  
Station Selector number (see “Keypad Function Definitions for Text Entry”).  
14:Selector Name  
S=xy: User Name  
Assignment of Call Station names (01 through Max Stations) where xy  
indicates station number. Default = PUMP number xy where xy = station  
number (see “Keypad Function Definitions for Text Entry”).  
15:Station Name  
S=xy: User Name  
13  
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Performance Series  
Programming the System  
A value (On, Off) for each Call Station. Default = On. Off will mute music at  
selected Call Station(s). This parameter is used to disable music at any Call  
Station. This parameter is used to disable music or messages at any Call  
Station.  
16:Music {On }  
S=xy: User Name  
A value (On, Off) for each Call Station. Default = On. Off will disable All  
Call broadcasts at selected Call Station(s). This parameter could be useful for  
disabling All Call broadcasts at a car wash or manager’s office Call Station.  
17: All Call {On }  
S=xy: User Name  
A value (On, Off) for each Call Station or Station Selector. Default = On. Off  
disables this Station Selector from connecting to specific Call Stations or  
Station Selectors. This could be useful for making specific Call Stations and  
Station Selectors inaccessible from this Station Selector, for privacy purposes.  
This Station Selector will still be able to receive calls from other Call Stations  
and Station Selectors.  
18:Registry {On }  
S=xy: User Name  
Command to synchronize all Station Selectors with the data from the Station  
Selector that issued the command. All data is synchronized with the exception  
of Selector ID #, Silence Calls, and Registry.  
19:Sync All Data  
‘ T A L K’ = Yes  
This confirmation message follows the above. Station Selectors must be On  
Line to be synchronized.  
Are You Sure ?  
‘T A L K’ = Yes  
Read from Station Selector & Communications Controller. Station Selector  
and Communications Controller software revision numbers.  
20:Software Rev  
Se=a.bc Con=x.yz  
14  
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Performance Series  
Programming the System  
Key functions are defined below.  
Keypad Function  
Definitions (for Text  
entry) (Programming  
State)  
Key  
Function  
HOLD (Shift)  
UP ARROW  
Shifts between upper and lower case for text data.  
Increments data by 1. Fields wrap around.  
3
6
9
1
4
7
2
5
DOWN ARROW Decrements data by 1. Fields wrap around.  
T
A
L
8
M0ENU  
1
2
3
4
5
Enters the digit 1 for numeric entry.  
Enters the following for text entry:  
K
SP-389C  
Unshifted  
Shifted  
A
a
B
b
C
c
1
1
(
)
Figure 12. D-2400 Key-  
pad  
Enters the digit 2 for numeric entry.  
Enters the following for text entry:  
D
d
E
e
F
f
2
[
Unshifted  
Shifted  
2
]
Enters the digit 3 for numeric entry.  
Enters the following for text entry:  
Unshifted  
Shifted  
G
g
H
h
I
i
3
3
{
}
Enters the digit 4 for numeric entry.  
Enters the following for text entry:  
Unshifted  
Shifted  
J
j
K
k
L
l
4
4
Enters the digit 5 for numeric entry.  
Enters the following for text entry:  
Unshifted  
Shifted  
M
m
N
n
O
o
5
5
:
;
15  
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Performance Series  
Programming the System  
Key  
Function  
6
7
8
9
Enters the digit 6 for numeric entry.  
Enters the following for text entry:  
Unshifted  
Shifted  
P
p
Q
q
R
r
6
6
_
|
Enters the digit 7 for numeric entry.  
Enters the following for text entry:  
Unshifted  
Shifted  
S
s
T
t
U
u
7
7
.
!
Enters the digit 8 for numeric entry.  
Enters the following for text entry:  
Unshifted  
Shifted  
V
v
W
w
X
x
8
8
&
@
Enters the digit 9 for numeric entry.  
Enters the following for text entry:  
Unshifted  
Shifted  
Y
y
Z
z
#
,
9
9
0/MENU  
Enters the digit 0 for numeric entry.  
Enters the following for text entry:  
Unshifted  
Shifted  
+
-
*
/
=
0
0
<
>
LEFT ARROW  
Jump left to next data field.  
RIGHT ARROW Jump right to next data field.  
ALL CALL  
STD BY  
Exits the programming state and enters Off Line mode.  
Clear the data field to its default value (space for text or  
the default value).  
TALK  
Enter key where appropriate.  
16  
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Performance Series  
Adjusting the System  
Adjusting the System  
Inbound Audio Volume Level  
To set the inbound audio volume level:  
1. Ask an attendant to stand at a Call Station and push the incoming call button for your Station Selector.  
2. Answer the call by pressing the TALK button.  
3. As the attendant talks, adjust the up/down arrows on the Station Selector keypad to reach a desirable level.  
VOX (Voice Operated Transmission) Sensitivity Level  
!
Important  
The VOX adjustments are necessary only if VOX is enabled for your system.  
The VOX sensitivity level determines the maximum distance from the microphone that the speaker can activate  
communication.  
!
Important  
The suggested average activation distance from the microphone to the attendant is 2 to 6  
inches.  
To set the VOX sensitivity level:  
1. Follow the directions under the section Programming the System to put the Station Selector in programming  
mode.  
2. Locate the VOX Enable parameter and be sure it is set to ON.  
3. Locate the VOX Sensitive parameter and press the right-arrow key to edit the value.  
4. Use the up/down arrow keys to adjust sensitivity:  
The up arrow key increases the sensitivity (lengthens the distance from the microphone to the attendant).  
Fifteen is most sensitive.  
The down arrow key decreases sensitivity. One is least sensitive.  
5. Press the ALL CALL key to exit Programming  
Outbound Talk Volume Level  
To set the outbound Talk volume level:  
1. Follow the directions under the section Programming the System to put the Station Selector in programming  
mode  
2. Locate the Talk Vol parameter and follow instructions in that section.  
17  
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Performance Series  
Adjusting the System  
Outbound Music/Messaging Volume Level (Only for systems that use Music/Messaging)  
To set the outbound Music/Messaging volume level:  
1. Follow the directions under the section Programming the System to put the Station Selector in programming  
mode  
2. Locate the Music Volume parameter and follow the instructions in that section.  
Testing the Functions  
Perform the following tests after installing the Performance Series D-2400 Intercom System:  
1. Checking TALK/LISTEN switching.  
a. Ask an attendant to go to Call Station 1 and press the call button.  
b. Establish a connection with the CALL STATION (press TALK on the Station Selector or Remote  
Microphone).  
c. Talk and listen to the attendant to determine that the TALK and LISTEN modes are functioning  
satisfactorily.  
d. Repeat Steps a through c for all CALL STATIONS.  
2. Checking ALL CALL.  
a. Ask an attendant to go to a Call Station.  
b. Activate ALL CALL (press and hold ALL CALL on the Station Selector or Remote Microphone).  
c. Broadcast an announcement from the Station Selector.  
d. Ask the attendant to verify that the message is broadcast from all Call Stations, which have not been  
disabled.  
18  
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Performance Series  
Configuration Worksheets  
Configuration Worksheets  
19  
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Performance Series  
Configuration Worksheets  
20  
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Performance Series  
Configuration Worksheets  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Commercial Care Division  
Food Service Business  
3M Center  
Printed in U.S.A.  
© 3M 2004 April  
78-6912-0739-9 Rev B  
St. Paul, MN 55144-1000  
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