Telex audiocom US-2000 REV D User Manual
®
Telex
Operating Instructions
Listen
Talk
Call
Mic Kill
1
Talk
PA
Headset
All Talk
Vox
Side Tone
Panel Mic
R
Volume
US-2000
Listen
Call
2
US-2000
User Station
®
Audiocom
Intercom
System
®
GENERAL
The Audiocom® US-2000 is a microprocessor controlled two-channel
intercom user station, that occupies only 1/2-rack space. The US-2000
can communicate with an entire intercom system or an individual
channel, and can be expanded up to 18 channels. ES-4000 Expansion
Stations can be “daisy chained” to the US-2000 to add four channels at a
time to the intercom system. Each channel can be programmed for talk,
listen or both. The US-2000 can use mono or stereo headsets, or panel
mounted microphone. VOX operation can be selected for either headset
or panel microphone. Internal switch and jumper settings allow the unit
to be used with Clear-Com® components, if desired. Other internal
switch and jumper settings allow the unit to be uniquely configured to the
operator’s requirements.
FCC STATEMENT
This equipment uses, and can radiate radio frequency energy that may
cause interference to radio communications if not installed in accordance
with this manual. The equipment has been tested and found to comply
with the limits of a Class A computing device pursuant to Subpart J, Part
15 of FCC Rules which are designed to provide reasonable protection
against such interference when operated in a commercial environment.
Operation of this equipment in a residential area may cause interference
which the user (at his own expense) will be required to correct.
This product meets the Electromagnetic Compatibility Directive,
89/336/EEC.
OPERATION
SYSTEM POWER
The US-2000 receives power externally, in one of two ways:
· Via the
· Via
®
Clear-Com is a registered trademark of Clear-Com Intercom Systems
® Audiocom is a trademark of Telex Communications, Inc., Minneapolis, Minnesota 55420
12-15 VDC
CHN 1orCHN 2
power input jack
, intercom channel connectors
1
PUSH
4
US-2000
Listen Listen
Mic KillHeadset
Side Tone
Call Call
PAPanel Mic
Vox
12
11 11
18
Talk Talk
PUSH
All Talk
710108 9 12 12
TELEX COMMUNICATIONS, INC. MADE IN USA
6
5
Volume
SPEAKERS
CHN 2
VOL
PGM 2
CHN 1
VOL
PGM 1
17 13161514
1 VRMS
2
LINE LEVEL
1
13
123
PROGRAM
INPUTS
-
+
Figure 1. Front and Rear Panel Controls
2
OUT
P.A. EXP
12-15 VDC
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
reset the US-2000 microprocessor to its power-up state.
TEST SIGNAL: Simultaneously press
microprocessor to generate 1 kHz test signal. Press any US-2000 or
ES-4000
same
other key on that unit (except
Call
key to send the test signal down that channel. Press the
Call
key to stop the test signal on that channel, then press any
All Talk
and channel 1
All Talk
andPAkeys to cause the
Listen
keys to
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
3. VOLUME
Use this control to adjust the headset listen level.
4.
SIDETONE
When using a headset, this control adjusts your own voice level
heard in the earphones. To adjust the level, tap the
once to turn on the headset microphone. Then, use a small
flat-blade screwdriver to increase or decrease your voice level while
talking into the microphone.
5.
VOX
Control
Control
Headset
Level Adjustment
key
There are separate
phone. These adjust the voice level required to activate the microphone when VOX mode is on.
To adjust the headset VOX level, place the
in VOX mode (see 6 below). While talking into the headset microphone in a normal voice, use a small flat-blade screwdriver to adjust
the
VOX
control to the desired voice activation level. The
microphone key will turn from orange to green as the microphone
turns on.
Use the same procedure to adjust the panel microphone VOX level
using the
6.
Headset
The
key activates the panel microphone. Either key selects one of three
modes of microphone operation:
Latched Mode:
Momentary Mode:
Panel Mic
and
Headset
Tap the key once to turn the headset or panel microphone on.
The key will glow green. Tap the key again to turn the headset
or panel microphone off.
VOX
level controls for headset and panel micro-
Headset
key and
Panel Mic
key activates the headset microphone. The
keys
VOX
level control.
microphone key
Headset
Panel Mic
Press and hold the key to momentarily turn on the headset or
panel microphone. Release the key to turn the headset or panel
microphone off.
4
VOX Mode:
With the headset or panel microphone off, tap the key twice to
turn on VOX mode. The key will glow orange when there is no
audio present, and green when you talk into the headset or
panel microphone. (When in VOX mode you may have to adjust
the
VOX
level.) Tap the key once to turn off VOX mode.
7.
All Talk
The All Talk function allows the user to talk on all attached channels
simultaneously. To activate this function with either the
Panel Mic
US-2000 and ES-4000 channels at once. The key will glow green.
8.
PA
The PA function allows the user to talk over a public address system
that is connected to the rear of the US-2000. With either the
set
public address system connected to the
panel of the US-2000. The key will glow green.
9.
Mic Kill
This key controls three features:
key
key
or
Panel Mic
key
selected, press and hold the
selected, press and hold thePAkey to talk on a
All Talk
P.A.
key to talk on all
output jack on the back
Headset
or
Head-
Microphone Kill Feature:
This feature sends a signal that causes the intercom stations on
a selected channel to turn off any activated microphones on that
channel. (Works with US-2000, ES-4000, SS-1000, BP1000 and
BP2000 stations.) Tap the key once to access this feature. The
key will blink green. To turn off all activated microphones on any
channel, press the
To turn off all microphones on all channels, press the
key. Tap the
Program Kill Feature:
This feature allows the program audio to be individually disabled
on each channel. Press and hold the key to access this feature.
The key will glow green and the current Program Kill status will
be displayed (when a
that channel). Press a
TalkorListen
Mic Kill
key for the desired channels.
key to exit.
Talk
key is lit, program audio is enabled on
Talk
key to enable or disable program au-
5
All Talk
dio on that channel. Tap the
setup.
Headset Audible Call Alert Feature:
This feature will cause an audible beep in the headset whenever
there is an incoming call from any channel. Press and hold the
key to access this feature. The key will glow green and the current Headset Audible Call Alert status will be displayed (when
both
Call
keys are lit, Headset Audible Call Alert is enabled).
10.
Press either
Alert on both US-2000 channels. Tap the
feature setup.
Talk
keys
Call
key to enable or disable Headset Audible Call
Mic Kill
key to exit the feature
Mic Kill
key to exit the
There is a
Panel Mic
Latched Mode:
Momentary Mode:
11.
Call
The Call function allows the user to signal other devices on the intercom system. There is a
operate in two ways:
Call receive:
Talk
key for each channel. With either the
selected, the
Tap the key once to talk. The key will glow green. Tap the key
again when finished with a conversation.
Press and hold the key to talk momentarily. Release the key
when finished talking.
keys
When there is an incoming call signal, the key blinks red. (If
Headset Audible Call Alert is enabled, incoming calls will cause a
beep in the headset.) To respond to an incoming call, turn on
the
Talk
key for that channel and begin talking.
Talk
keys operate in two ways:
Call
key for each channel. The
Headset
Call
or
keys
Call send:
To send a call signal to a station on a channel, press and hold
the
Call
key until a verbal response is received. The
6
Listen
key
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