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PS-2001L
Power Supply
The PS-2001L is a versatile power supply that can be used in a variety of Telex Audiocom intercom system applications. It direct-
ly accept any AC input power from 100 to 240 VAC, 50/60 Hz and can be congured to power two separate intercom channels
or one large intercom channel with twice the intercom station capacity. Additionally, the unit can be congured for compatibility
with Clear-Com Intercom Systems. The unit may be rack mounted or used on a desktop. For rack mounting, optional hardware
is required. For desktop use, four non-marring rubber feet are supplied.
Features
Combine / Isolate Switch
When in the Combine position, the unit will combine the
audio signals of the two channels to create a single audio
channel where all users can intercommunicate. When in the
Isolate position, the unit will create two groups of completely
independent users.
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 short circuit is
located and xed.
Universal AC Power Input
The unit accepts any input power in the range of 100-240
VAC, 50/60 Hz.
Instantaneous Auto-Reset
Instantaneous Auto Reset (IAR), the newest technology in
performance and safety, which uses a revolutionary new
circuitry that dynamically monitors line fault conditions. Then,
when the fault is removed, automatically brings individual
power supply channels up.
Intercom Channel Connectors
When the Combine / Isolate switch is set to the Isolate position, each channel connector is powered separately and has
completely separate intercom audio. When the Combine /
Isolate switch is set to the Combine position, each channel is
still powered separately, but the audio signals are combined
so that all users on both channels can intercommunicate.
BAL / UNBAL Selector Switch
This selector switch allows the user to congure the unit for
use in either an Telex Audiocom (BALANCED) or Clear-Com
(UNBALANCED) system. Compatibility includes channel
connector pin-outs, channel power requirements, and call
signaling requirements. The default setting for this switch is
in the Telex Audiocom (BAL) position.
Clear-Com Compatible
Line Drawing
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PS-2001L Specications
General
Input Power Requirements: 100 to 240 VAC, 50/60 Hz
Output Power (each channel): 21±1 VDC, 1 A
Dimensions 1.75”(44.5 mm) high, 8.25” (209.5 mm) wide, 10.31” (261.9 mm) deep
Weight: approximately 2.5 lb (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 a
switch for balanced or unbalanced operation as dened below:
Balanced Mode (set to BAL position)
Line Terminating Impedance: 300 ohms ±10%
Connector Pin-out:
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 Pin-out:
Pin 1 Common (audio and DC return)
Pin 2 +24 VDC output
Pin 3 Full-duplex, unbalanced Intercom audio high
Speaker Inputs (SPS-2001 Only)
Type: RCA Phone Jack
Tip: Speaker + Input
Sleeve: Speaker - Input
Approvals
UL, CUL, CE
Contact Information
Telex Communications, Inc.
12000 Portland Avenue South
Burnsville, Minnesota 55337
Telephone: (800) 392-0498
Fax: (800) 323-0498
Form Number: 38110-212 Rev B
Date: December, 2006
Ordering Information
PS-2001L
Power Supply
Catalog Number: 90007702000
This specications information is preliminary and is subject to change without notication.
Brand names mentioned are the property of their respective companies.
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