Telex Audiocom ES4000A, User Instructions

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CHAPTER 1
Introduction
Introduction
Thank you for purchasing the Audiocom ES4000A Intercom Expansion Station. We hope the many design features of this
product will satisfy your intercommunication requirements for many years to come. To get the most out of the ES4000A,
please take a few moments to look through this booklet before using the Intercom Expansion Station for the first time.
Description
The ES4000A is an Expansion Station for the US2000A User Station. It interfaces 4 additional intercom channels to the
US2000A, and it provides talk, listen and call buttons for the 4 additional channels. There are also 4 additional program inputs
on the back of the ES4000A, 1 for each added channel. Up to 4 ES4000A Expansion Stations may be connected to the
US2000A to add up to 16 channels (18 channels total). The ES4000A typically utilizes the US2000A microphone and speaker
(or microphone headset) for communication with the added channels. The ES4000A also has individual speaker outputs for
independent monitoring of one or more of the 4 channels, if desired.
The US2000A / ES4000A combination can be used as a simple, multi-channel intercom user station. In this configuration, the
program inputs (and possibly the PA output of the US2000A) are most likely not used, and the station operator has only talk,
listen and call capability. It is also possible that advanced features of the US2000A, such as Mic Kill Send, might be turned
OFF. Alternatively, the US2000A / ES4000A can be used as a master station. In this application, one or more program inputs
and the PA output may be connected, and the program signals to the intercom channels can be turned ON or OFF from the
US2000A. Additionally, the Mic Kill Send feature can be enabled, and microphones on any channels may then be turned OFF
from the US2000A.
FIGURE 1.
ES4000A Reference View (See numbered features on next page).
12-15 VDC
+ -
ES4000A
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SPEAKERS
PROGRAM
INPUTS 4
LINE LEVEL
1 VRMS
EXP
OUT
Listen Listen
Call Call
5 6
Talk Talk
CHANNEL 3-6 OUTPUTS
Listen
Call
4
Talk
Listen
Call
3
Talk
EXP
IN
5
6
3 4 5 6
PGM VOLUME
BAL-OUT
UNBAL-IN
TELEX COMMUNICATIONS, INC.
Minneapolis, MN U.S.A.
Telex
®
3 2 1
®
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