INITIAL US-2000 SETUP
The channel termination is initially set for balanced operation, which is
compatible with other Audiocom® equipment. If the unit is going to be
connected to Clear-Com equipment, two jumpers and one switch must
be changed as described in the section on Clear-Com Setup in this
manual.
The US-2000 is factory set to allow all channels (including those of any
attached ES-4000 units) to be heard through a single powered speaker,
such as the Audiocom® SPK-1000. If the user wants to have each
channel go to a separate powered speaker, three jumpers must be
changed as described in the section on Speaker Setup in this manual.
The headset microphone termination is initially set for unbalanced
operation. To change the headset microphone termination, refer to
Table 2 in this manual for the position of jumper J16. If the termination
requirement of a headset microphone is unknown, the recommended
setting is unbalanced.
MICROPROCESSOR FUNCTIONS
RESET: Simultaneously press
All Talk
and channel 1
Listen
keys to
reset the US-2000 microprocessor to its power-up state.
TEST SIGNAL: Simultaneously press
All Talk
and
PA
keys to cause the
microprocessor to generate 1 kHz test signal. Press any US-2000 or
ES-4000
Call
key to send the test signal down that channel. Press the
same
Call
key to stop the test signal on that channel, then press any
other key on that unit (except
Call) to exit the test signal function.
EXTERNAL CONNECTIONS & CONTROLS
NOTE: The numbers refer to the callouts in Figure 1.
1.
Mono Headset Connector
This connector accepts a Telex® boom-microphone headset.
2.
Panel Microphone or Stereo Headset Connector
This connector accepts a Telex® gooseneck microphone (model
EGM-12N or EGM-18N) or stereo headset.
3
