Telex SPS-2001 User Manual

Plug in any DC wallpacks that are being used with individual intercom stations. Note: If you plug in DC
wallpacks after applying power to the PS-2001L or SPS-2001, you may get an overload indication. This is
because the stations that are being powered by wallpacks will draw current from the units until their own DC
wallpack supplies are connected. To correct the problem, plug in the DC wallpacks.

Plug in the AC power cords for any connected PS-2001L or SPS-2001 Power Supplies. The channel status
indicators should be green.

If a channel status indicator turns red during operation, locate the short or overload that is causing the problem.
Once the short or overload is corrected, the Power Supply should reset itself and the overload indication should
go away.

Input Power Requirements: 100 to 240 VAC, 50/60 Hz
Output Power (each channel): 21±1 VDC, 2 A
Dimensions 1.75”(44.5 mm) high x 8.25” (209.5 mm) wide x 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

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:

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

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

Type: RCA Phone Jack

Tip: Speaker + Input
Sleeve: Speaker - Input

UL, CUL, CE

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