Connect to the TX9 using RG-58 cable and BNC connectors. The MOD 232 has two baseband
output jacks to simplify connections when multiple emitters are used.
Figure 3: Baseband Connection, Two Channel Application
To TX9 Emitter
Baseband Input
Coaxial Cable
(WCA 068)
MOD 232 Modulator #1 (Rear) MOD 232 Modulator #2 (Rear)
Configuration
Switches
Input CH A Input CH B
Audio Line
Output
CH A
CH A
CH B
CH B
50 Ohms
100 Ohms
Made in USA
24V
24 VAC, 15 VA, 50-60 Hz
Power In
Baseband
OutputOutputInput
MOD 232 Infrared System Modulator
Plug
Williams Sound
12345678
12345678
Configuration
Switches
Input CH A Input CH B
Audio Line
Output
CH A
CH A
CH B
CH B
50 Ohms
100 Ohms
Made in USA
24V
24 VAC, 15 VA, 50-60 Hz
Power In
Baseband
Output OutputInput
MOD 232 Infrared System Modulator
Plug
Williams Sound
12345678
12345678
Baseband
Output
Baseband
Output
Baseband
Input
Figure 4: Baseband Connection, Four Channel Application
To setup a system for four-channel operation, two MOD 232 Modulators are required. Link the two
Modulator units together. Connect the WCA 068 coaxial cable (supplied with the SoundPlus
™
Infrared Listening System) to one of the Baseband Output Jacks in the rear of the
first
MOD 232 in the
chain. The other end of the coaxial cable connects to the Baseband Input Jack of the
second
MOD 232 in the chain. Then connect the baseband output from the second modulator in the chain
to the TX9 emitter(s) baseband input connector. See Figure 4 below.
B
ASEBAND CABLE CONNECTION
The MOD 232 can directly drive one or two emitters. TX9 emitters repeat the baseband signal, so
any number of emitters can be used. The modulator outputs CANNOT be split with CATV splitters.
Determine the length of RG-58 cable needed to reach from the TX9 Emitter to the Modulator unit.
Install BNC connectors to each end of the cable (see page 24 for installation details).
For two-channel application, only one MOD 232 is required: Connect the coaxial cable to one of
the Baseband Output jacks on the rear of the MOD 232. The other end of the coaxial cable
connects to the Baseband Input jack of the TX9 Emitter. See Figure 3 below.
IMPORTANT: Each channel must be set to a different frequency.
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