for that channel automatically turns on when the
Call
key is
pressed.
12.
Listen
keys
There is a
Listen
key for each channel. The
Listen
keys operate in
two ways:
Latched Mode:
Tap the key once to turn on listen. Tap it again to turn off listen.
The key glows green when listen is on.
Momentary Mode:
Press and hold the key to listen momentarily. Release the key to
turn off listen.
13.
Program Inputs
Connector and Program Volume Controls
In a television studio intercom system, the program input is usually
the actual program audio signal. In another intercom system, the
program input can be any auxiliary audio signal, such as background
music.
There is a separate program input for each channel (see Connector
Pin Configurations for connector details). The
VOL PGM 1
control
adjusts the program 1 level heard on intercom channel 1. The
VOL
PGM 2
control adjusts the program 2 level heard on intercom chan-
nel 2. As supplied, the US-2000 does not interrupt the program in-
puts during talk. Program interrupt during talk requires an internal
switch change (see Table 1, switches SW2-4 and SW2-5).
14.
12-15 VDC
Input Jack
Normally the US-2000 is powered from the intercom system and will
turn on with the intercom system. The US-2000 may also be pow-
ered from an optional Telex® Wall Pack (part number 532006-000).
Plug the Wall Pack into the
12-15 VDC
jack and into an AC outlet.
15.
P.A.
Output Jack
To use the US-2000 with a public address system, connect this jack
to the input of the public address amplifier.
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