Telex ES4000A User Manual
®
Telex
User Instructions
®
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ES4000A
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Model ES4000A
Intercom Expansion Station
®
Audiocom
Intercom Systems
®
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 Electromagnetic Compatibility Directive 89/336/EEC.
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.
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Table of Contents
Description .............4
Features ..............5
Installation .............7
Unpacking ............7
Configuration Pre-check..........7
Mounting Configurations .........10
Connection Notes ...........13
Cables.............22
Power-Up ............25
Sidetone Adjustments ..........25
Operation .............25
Specifications ............26
Factory Service and Parts Information .......29
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Audiocom®
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 but-
tons 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 inter-
com user station. In this configuration, the program inputs (and possibly the P Aoutput
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 en-
abled, and microphones on any channels may then be turned off from the US2000A.
+
12-15 VDC
®
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EXP
IN
OUT
54 9876
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SPEAKERS
LINE LEVEL
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PROGRAM
INPUTS
BAL-OUT
UNBAL-IN
Telex
TELEX COMMUNICATIONS, INC.
Minneapolis, MN U.S.A.
PGM VOLUME
3456
ES4000A
®
CHANNEL 3-6 OUTPUTS
Figure 1. ES4000A Reference View (See numbered features on next page)
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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 out-
let. 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 can-
☞
not be used to power the intercom system.
5. EXP IN and EXP OUT Connectors: The EXP IN connector receives the micro-
phone 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 con-
nector 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* 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 adjust trimmer. For each program input, there is an inter-
* Brand names mentioned are the property of their respective companies.
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Audiocom®
nal 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 internal 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 cables using an optional XP-4PGM Breakout Panel.
9. CHANNEL 3-6 OUTPUTS Connector: This connector provides the intercom channel audio input and output connections, 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 providedinthewiring diagrams which follow. A channel output cable is supplied with each ES4000A.
10. Configuration Switches, Jumpers and Sidetone Controls (Figure 2
). These let
you customize the operation of the ES4000A to match your intercom system requirements. See “Configuration Pre-check”, page 7, for details.
Ch 6
J21
3 2 1
Ch 5
SW2
BAL/UNBAL
J18
3 2 1
J16
3 2 1
J15
3 2 1
Ch 4
Ch 3
SW3
SW1
Figure 2. Locations of configuration switches, jumpers, and sidetone controls.
(Top cover removed.)
Sidetone Trimmers
DIP Switches
Program Listen Jumpers
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Installation
Unpacking
The ES4000A is supplied with the following items. Contact the shipper or your
Audiocom dealer immediately if anything is damaged or missing. Detach and fill out
the registration card and return it to Telex to properly register your intercom station.
Quantity Description
1 ES4000A Expansion Station
1 Warranty and registration card
1 User Instructions
2 Termination Plug
1 EXP IN/OUT Cable, with 1/8-inch (3.5 mm) phone plugs
1 CHANNEL OUTPUT Cable, with 15-pin connectors
4 Rubber feet (apply to bottom of ES4000A for desktop use)
Configuration Pre-check
Before making connections, read the configuration notes that follow, and make sure
that all switches and jumpers are properly set for your intended usage. Locations of
configuration switches and jumpers are shown in Figure 2
and jumpers require internal access. If access is required, remove one screw from the
top cover and 3 screws from each side.
. Only the DIP switches
DIP Switches
DIP switches and their default settings are listed in Table 1, page 8. The following
paragraphs provide additional details.
Program Interrupt DIP Switches
Each intercom channel has a dedicated program input. These can be used to feed
background music, mix-minus audio (for broadcasting usage) etc. to the intercom
channels. If external program sources will be connected to the ES4000A, you have a
choice of whether or not you want the program audio to interrupt (shut off) on the intercom channel while the US2000A/ES4000A station operator is talking.
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Audiocom®
Table 1. Configuration Switch Settings
Switch
Number
SW1-1 Program Interrupt, Ch 6
SW1-2 Program Interrupt, Ch 5
SW1-3 Program Interrupt, Ch 4
SW1-4 Program Interrupt, Ch 3
SW1-5 Audiocom Call Send, Ch 3*
SW1-6 Audiocom Call Receive, Ch 3*
SW1-7 Audiocom Call Send, Ch 4*
SW1-8 Audiocom Call Receive, Ch 4*
Audiocom or Clear-Com
Description Settings Default
DIP Switch SW1 (Internal)
Push-button Switch SW2 (BAL-UNBAL Switch on Back Panel)
operation
DIP Switch SW3 (Internal)
On (Closed): Enabled
Off (Open): Disabled
On (Closed): Enabled
Off (Open): Disabled
On (Closed): Enabled
Off (Open): Disabled
On (Closed): Enabled
Off (Open): Disabled
On (Closed): Enabled
Off (Open): Disabled
On (Closed): Enabled
Off (Open): Disabled
On (Closed): Enabled
Off (Open): Disabled
On (Closed): Enabled
Off (Open): Disabled
Out: Audiocom (Balanced)
In: Clear-Com (Unbalanced)
Setting
Off
Off
Off
Off
On
On
On
On
Out
SW3-1 Audiocom Call Send, Ch 5*
SW3-2* Audiocom Call Receive, Ch 5*
SW3-3 Audiocom Call Send, Ch 6*
SW3-4 Audiocom Call Receive, Ch 6*
SW3-5* Not used
SW3-6* Not used
SW3-7* Not used
SW3-8* Not used
These switches apply only when the BAL/UNBAL switch on the back panel (SW2) is set to
*
the BAL position for Audiocom usage.When the switch is set to the UNBAL position, call
send and receive are always enabled.
On (Closed): Enabled
Off (Open): Disabled
On (Closed): Enabled
Off (Open): Disabled
On (Closed): Enabled
Off (Open): Disabled
On (Closed): Enabled
Off (Open): Disabled
On (Closed): N/A
Off (Open): N/A
On (Closed): N/A
Off (Open): N/A
On (Closed): N/A
Off (Open): N/A
On (Closed): N/A
Off (Open): N/A
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On
On
On
On
Don’t care
Don’t care
Don’t care
Don’t care
Audiocom Call Send and Receive DIP Switches
By default, all channels of the ES4000A can send and receive Audiocom call signals.
You can disable call send or call receive capability for selected channels if desired.
When the BAL / UNBAL switch on the back panel is set to the UNBAL position
☞
(for use with a Clear-Com Intercom System) the call send and call receive DIP
switches have no effect. Call send and call receive are always on for Clear-Com
usage.
Balanced/Unbalanced Switch (SW2)
This switch must be set to the balanced (BAL) position for use with an Audiocom
Intercom System. Set the switch to the unbalanced (UNBAL) position when using
the US2000A / ES4000A with a Clear-Com Intercom System.
Direct Program Listen Enable / Disable Jumpers
By default, each program input can be heard by intercom stations on the corresponding intercom channel. (This can be turned on or off for each program input via the
US2000A front panel programming. See "Turning the Program Inputs On and Off"
in the Operation section of the US2000A User Instructions.) Additionally, all program signals can be heard directly in the US2000A speaker or headset, and each program is output at the corresponding speaker jack on the back of the ES4000A. To
disable direct program listening for a program input, reset the appropriate jumper as
shown in Table 2. Locations of the jumpers are shown in Figure 2, page 6.
Table 2. Direct Program Listen Enable / Disable Jumpers
Jumper Description Settings for All Jumpers
J15 Program 3 direct to Headset or Speaker
J16 Program 4 direct to Headset or Speaker
J18 Program 5 direct to Headset or Speaker
J21 Program 6 direct to Headset or Speaker
Pins 2&3 Shorted: Enable
Pins 1&2 Shorted: Disable
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Audiocom®
Sidetone Trimmers
These trimmers are normally adjusted after all components are connected, and they
can be accessed through the bottom cover (Figure 15). Refer to the US2000A User
Manual for the sidetone adjustment procedure.
Mounting Configurations
The ES4000A can be used on a desktop, or it can be rack mounted. For desktop use,
install the 4 rubber feet supplied with the ES4000A. For rack mounting, use optional
Audiocom RMK Rack Mount Kits (Figure 3
). Many configurations are possible
when using the kits. Examples are shown in Figures 4 and 5.
When rack mounting components, you may not be able to access the sidetone
☞
trimmers after the components have been mounted. In this case, you can position
the components in the rack and make all required connections. Then, adjust the
sidetone trimmers before installing and tightening all rack mount screws.
RMK-S Single-Unit Rack Mount Kit
for one 1/2-rack wide Audiocom
component*
RMK-D Dual-Unit Rack Mount Kit
for two 1/2-rack wide Audiocom
components*
RMK-M Multi-Unit Rack Mount Kit
for mixed 1/2-rack and 1/4-rack
wide Audiocom components.Mounts
one 1/2-rack wide unit with 1/4-rack wide
components, or 3 1/4-rack wide components.
* 1/2-rack wide components:US2000A, ES4000A, PS2000L, SPS2000A,
PS4000, PS-X, SPK-2000. 1/4-rack wide components: SS-1000
Figure 3. Audiocom RMK Rack Mount Kits.
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