Telex Audiocom ES4000A, Инструкция пользователя

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Introduction
4
Features
1.
Intercom Talk Keys: Momentary or latching (hands-free) operation possible.
2.
Call Keys: Used to call intercom channels and to indicate incoming calls.
3.
Intercom Listen Keys: Momentary or latching operation possible.
4.
Local Power Jack: The ES4000A can be powered from the intercom channels via the CHANNEL 3-6 OUTPUTS
connector (9). Alternatively, an optional PS-L wall-pack accessory may be used to power the ES4000A from an AC outlet.
When power is sensed at the local power jack, the ES4000A automatically disconnects from channel power. This means
more channel power is available for additional belt packs.
IMPORTANT: The Local Power Jack only provides power to the ES4000A: it cannot be used to power the intercom system.
5.
EXP IN and EXP OUT Connectors: The EXP IN connector receives the microphone audio signal from the US2000A, and
it sends the monaural mix of the four ES4000A channels to the US2000A speaker or headset. The EXP OUT connector
connects to the EXP IN connector of an additional ES4000A. Up to 4 ES4000A Expansion Stations may be daisy chained
with the EXP IN and EXP OUT connectors. An EXP IN/OUT cable is supplied with each ES4000A.
6.
SPEAKERS: Usually, the listen mix of all 4 ES4000A channels is sent to the US2000A speaker or headset via the EXP IN
connector. Alternatively speakers may be connected to one or more of the speaker outputs of the ES4000A.
7.
BAL / UNBAL Switch: This selector switch sets the ES4000A for compatibility with either Audiocom or Clear-Com
1
channel connector pin-outs, channel power requirements, and call signaling requirements.
8.
Program Inputs Connector and Trimmers: Each intercom channel has its own program input and level adjustment trimmer.
For each program input, there is an internal jumper which routes the program either to the intercom channel only, or to both
the intercom channel and the US2000A headset or speaker (default setting). Additionally, the program signal to the
intercom channel may be turned ON or OFF via the US2000A front panel programming. There is also an intercom
program interrupt DIP switch which selects either automatic program interrupt when the station operator activates a
channel’s talk key, or no program interrupt during talk. The ES4000A program inputs connector may be broken out to
common 3-pin XLR audio cable using an option XP-4PGM Breakout Panel.
9.
CHANNEL 3-6 OUTPUTS Connector: This connector provides the intercom channel audio input/output connects, as well
as operating power when the ES4000A is being powered from the intercom channels. Depending on the application, this
connector can connect to either a PS4000 Power Supply, or to an XP-ES4000 Breakout Panel. Examples of both
connections are provided in the wiring diagrams which follow. A channel output cable is supplied with each ES4000A.
10.
Configuration Switches, Jumpers, and Sidetone Controls: These let you customize the operation of the ES4000A to match
your intercom system requirements. See “Configuration Pre-check” on page 5.
1. Brand names mentioned are the property of their respective companies.
FIGURE 2.
Locations of configuration switches, jumpers, and sidetone controls. (Top cover
removed.)
SW3
SW1
Ch 6
Ch 3
Ch 4
Ch 5
SW2
BAL/UNBAL
Sidetone Trimmers
J21
3 2 1
J15
3 2 1
J16
3 2 1
J18
3 2 1
DIP Switches
Program Listen Jumpers