®
Channel
PERFORMANCE MULTI-ROOM VIDEO
Warranty
Multi-room Video Distribution System
Installation Manual
Multiplex Technology, Inc. warrants this products to be free
from defects in materials and workmanship for a period of
one year from the date of purchase or MTI will repair, or at its
option, replace the defective product. To obtain warranty
service, call MTI for a return material authorization (RMA)
number and return the product prepaid to Multiplex
Technology, Inc., 3001 Enterprise Street, Brea, CA 92821,
Attention: Customer Service. Please put the RMA number
on the outside of the carton.
®
model 3445 four channel integrated modulator & distribution system
select
program
program
IR
pll frequency control
Any implied warranty arising from the sale of the product
including implied warranties of merchantability and fitness
for purpose are limited to the warranty stated above. MTI
shall not be responsible for losses or damages or expenses,
whether direct, consequential or incidental arising from the
use of or the inability to use this product. Some states do not
allow limitations on how long the implied warranty lasts or
the exclusion or limitation or incidental or consequential
damages, so the above limitations and exclusions may not
apply to you. This warranty gives you specific legal rights,
and you may have other rights which may vary from state to
state.
For use with model
2133 IR targets
distribution panel
Models
3425/3445
This device complies with the FCC's Part 15 Rules for TV
interface devices. Any change or modification to this device
without the permission of Multiplex Technology, Inc. may
void the user's authority to operate this equipment.
®
3001 Enterprise Street, Brea, CA 92821-6213, U.S.A.
Multiplex Technology, Inc., Brea, CA 92821
600-106 Rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
Sample System Diagram
Things to watch for:
No picture … Verify that the video source is on and is producing a video signal. Check that the
TV and the modulator are tuned to the same channel. For example, if the modulator is
broadcasting on UHF channel 16, make sure the TV is on UHF 16 rather than CATV 16. UHF 16
and CATV 16 are at different frequencies.
SATELLITE
RECEIVER
In this system, CATV or antenna
channels are available on all TVs. In
addition the following channels have
been added:
Weak ChannelPlus UHF channel … If the TV has a separate UHF input, be sure that it is
connected.
LEDs blink ... You need to have one unused channel space between channels. The display will
blink if you have made an ‘illegal’ choice. See the section on programming.
Video/audio
outputs
Channel 66 - Front door channel
Channel 68 - VCR
Channel 70 - Satellite receiver
Channel 72 - DVD player
CCTV Camera
at front door
Herringbone interference on ChannelPlus channel (diagonal lines) ...
You may have chosen a channel number that is not completely vacant. Distant UHF stations may
be un-watchable, but will cause interference if you try to create a new channel at the same
frequency. Also, cable companies often have extra signals where there should be none. Try
moving the ChannelPlus channel to another number. You may have to add a low pass filter to
remove cable company noise. If a filter does not work, try adding a DC-block to remove common
mode interference.
Model 3445
Herringbone interference on many channels, including ChannelPlus
channels (disappears when you remove the CATV/Ant feed) … The RF amplifier can be
overloaded by abnormally strong signals. Often, you can cure the problem with a simple
attenuator. Use a variable attenuator and try to find a signal level where the interference just
disappears. Sometimes, the problem is one station that is far stronger than the rest. In this case
attenuating all of the signals with a simple attenuator will cause the desired stations to be weak
(snowy). In this case you must reduce the strength of only the offending station. A common FM
trap will help if the problem is a nearby FM tower. If the problem is a nearby TV station, often the
station management can provide suitable filters.
A
B
C
D
OUTPUT
Remove mper for Hi-Z
(See manual)
POWER
15VDC
600mA
Model 2173 IR emitter repeats
what the IR target ‘sees’ in the
other room.
VIDEO
AUDO
L
AUDIO
R
VIDEO
AUDIO
L
AUDIO
R
Attach the IR emitter directly
over the IR sensor.
Video/audio
outputs
Video/audio
outputs
Audio volume is low … The left and right audio inputs are combined for monaural. For proper
audio level, both right and left inputs must be used. If you have a mono source, connect it to both
right and left inputs using an RCA ‘Y’ connector.
12:00
No color on ChannelPlus channels … You may have chosen the incorrect cable standard. Not
all televisions can accommodate the 1.25MHz frequency difference between the H and I cable
standards. See the section on programming.
VCR
RG6 coax
preferred
DVD
Infrared Remote Control Problems … Use the red IR DATA light on the side of the modulator
section as a trouble shooting aid. This light will blink as remote control signals are relayed.
If the light is on constantly, one or more IR targets is receiving electrical or optical noise. At the
modulator section unit, begin to disconnect the outputs to the TVs until the IR DATA light goes off.
This will tell you which IR target is the source of the noise.
Next cover the front of the offending IR target. If the IR DATA light turns off, the IR target is
‘seeing’ a source of IR noise, such as a solid state flourescent lamp. If the light does not go out,
the problem may be radiated electrical noise from the TV. Reposition this IR target. If
repositioning the IR target does not help, the TV may be conducting noise from its input. Place a
DC block between the IR target and the TV.
To more TVs
Any or all TVs may have
a model 2133 IR Target
RF section
(Distributes to as many as 8 TVs)
If the IR DATA light seems to indicate proper operation, but the component is not being controlled,
the IR emitter may be mis-located. Be sure the emitters are in front of the IR sensor.
Control the DVD,
DSS or VCR from
any room.
CATV/Antenna
Simple DC-block for RF
Inexpensive 0-20dB attenuator
3
6
Download from Www.Somanuals.com. All Manuals Search And Download.
Programming Examples:
Valid Channels:
14-64: UHF channels
65-125: CATV channels
95-99: not valid
To program modulator B to channel 67
®
model 3445 four channel integrated modulator
&
distribution system
pll frequency control
Channel Spacing:
Skip at least one number between channels.
Channels 14 and 16: OK.
Channels 14 and 15: Illegal.
select
select
program
program
A
B
C
D
IR
Press select button until
B channel LED is on
select
program
A
B
C
D
Press program button
6 times
Error indication:
If an error has occurred or an incorrect channel is
entered, the LED will flash quickly for a second and
return to the previous settings.
select
program
A
B
C
D
Wait for B channel LED to light
(ready for next number.)
If two adjacent channels are selected, the unit will
accept the entry but will blink the LEDs of channels
that are too close. If this happens, re-program one
of the channels to move it away from the other.
select
program
A
B
C
D
Press program button
7 more times
select
program
A
B
C
D
Channel number
readback:
A readback mode will display the current channel
assignments.
To program modulator C to channel 120
®
model 3445 four channel integrated modulator
&
distribution system
To readback modulator C channel assignment
(example: C has been programmed to channel 108)
select
select
program
program
A
B
C
D
IR
pll frequency control
Press select button until
C channel LED is on
select
program
®
model 3445 four channel integrated modulator
&
distribution system
pll frequency control
A
B
C
D
select
select
program
program
A
B
C
D
IR
Press program button
1 time
Press select button until
C channel LED is on
select
program
select
program
A
B
C
D
A
B
C
D
Wait for C channel LED to light
(ready for next number.)
Hold program button down
for 5 seconds, then release.
select
program
select
program
A
B
C
D
A
B
C
D
Press program button
2 more times
Led blinks 1 time and pauses
select
program
A
B
C
D
select
program
A
B
C
D
Wait for C channel LED to light
(ready for next number.)
Led blinks 10 times, pauses
(“10” is read back as 0)
select
program
select
program
A
B
C
D
A
B
C
D
Press program button
10 more times
(press 10 to enter a ‘zero’)
Led blinks 8 times
select
program
select
program
A
B
C
D
A
B
C
D
5
4
Download from Www.Somanuals.com. All Manuals Search And Download.
|