Telex Audiocom US-2002, User Instructions

5

Reference Descriptions

1.

Dynamic-Mic Headset Connector - 

Accepts headset with monaural headphones and either balanced or 
unbalanced dynamic microphones.

2.

Panel Mic/Electret Mic Headset Connector -  Accepts an electret gooseneck microphone, such as the Telex Model 

MCP-90-XX. The Model MCP-90 series panel mic connector is a 1/4” 
stereo plug, with a threaded shaft for easy installation.

3.

Volume Control - 

Adjusts headphone volume only. If an external speaker is used, volume is 
adjusted at the speaker.

4.

VOX Trimmers - 

Used with the voice-activated microphone feature. Separate trimmers 
adjust the voice activation level for the headset and panel microphones.

5.

Headset and Panel Mic keys - 

Used to manually activate either the headset or panel microphone, 
whichever is being used.

6.

All Talk Key - 

Used to talk to all stations that are listening on all channels. This includes 
both US-2002 channels and any connected ES-4000A Expansion 
Stations.

7.

PA Key - 

This key is used to talk over the public address system if a US-2002 is 
connected to a public address system, .

8.

Mic Kill Key - 

Used to turn off the microphones on any intercom station on a channel. 
Also used to activate the program inputs and the audible beep feature.

9.

Intercom Talk Keys - 

Allows momentary or latching (hands-free) operation possible.

10.

Call Keys - 

Used to place calls on intercom channels and to indicate calls.

11.

Intercom Listen Keys - 

Allows momentary or latching operation possible.

12.

Program Inputs Connector and Trimmers -  Each intercom channel has its own program input and level adjust 

trimmers. The program inputs may be turned on or off via the front panel 
and they may be set to interrupt during talk, if desired.

13.

Local Power Jack - 

Powers the US-2002 from an AC outlet, instead of being powered from 
the intercom channels with the use of an optional PA-KP local power 
supply.

14.

PA Output - 

Connects to a public address system.

15.

Expansion Out Connector - 

Connects to an ES-4000A Expansion Station

16.

Speaker Output Jacks - 

A single powered loudspeaker or dual powered loud speakers may be 
connected for monaural or binaural listening.

17.

Intercom Channel Connectors and 
Audiocom/Clear-Com Selector Switch - 

Sets the US-2002 for compatibility with either Audiocom or Clear-Com 
channel connector pin outs, channel power requirements, and call 
signaling requirements.