Operation and Specifications
2
1. Universal AC Power Input: The unit accepts any input power in the range opf 100-240 VAC, 50/60 Hz.
2. Connector to ES-4000A: This connector carries power to the ES-4000A expansion station, and carries the four audio
channels of the ES-4000A. When a Telex ES-4000A is connected to the PS-4001, each of the four channels of audio is
“broken out” to the respective channel connections.
3. Intercom Channel Connectors: These connectors carry power to the intercom system and provide termination for the audio
signal of each individual intercom channel.
4. Channel Status Indicators: The indicators are green for normal operation and red when there is an overload or short circuit.
The circuitry in the unit will automatically reset when the overload or shirt circuit is located and fixed, and the LED will go
back to green.
5. BAL/UNBAL Selector Switch: This selector switch allows the user to configure the unit for use in either an Audiocoom®
(BALANCED) or ClearCom® (UNBALANCED) system. Compatibility includes channel connector pin-outs, channel
power requirements, and call signaling requirements. The default setting for this switch is in the Audiocom® (BAL)
position.
Specifications
GENERAL
Input Power Requirements: 100 to 240 VAC, 50/60 Hz
Output Power (each channel): 24 ±1 VDC, 1 Amp per channel
Dimensions: 1.75” (44.5mm) high x 8.25” (209.5mm) wide x 10.31” (261.9 mm) deep
Weight: approxiamately 2.5lb. (1.13 kg)
Environmental Requirements:
Storage: -20°C to 80°C, 0% to 95% humidity, non-condensing
Operating: 0°C to 50°C, 0% to 95% humidity, non-condensing
INTERCOM CHANNELS - General
Connector Type: One XLR-3M audio connector for each channel. Pin-out depends on setting of BAL/UNBAL switch for
balanced or unbalanced operation as defined below:
Balanced Mode (Set to BAL position)
Line Terminating Impedance: 300 Ohms ±10%
Connector Pinout
Pin 1 Common (audio and DC return)
Pin 2 Full-Duplex, balanced intercom audio and +24 VDC output
Pin 3 Full-Duplex, balanced intercom audio and +24 VDC output
Unbalanced Mode (Set to UNBAL position)
Line Terminating Impedance: 150 Ohms ±5%
Connector Pinout
Pin 1 Common (audio and DC return)
Pin 2 +30 ±1 VDC output
Pin 3 Full-Duplex, unbalanced intercom audio high
APPROVALS
UL, CUL, CE