Telex Power Supply PS2000L User Manual

®
Telex  
User Instructions  
Model PS2000L  
Power Supply  
Audiocom® Intercom Systems  
®
 
Audiocom®  
Description  
The PS2000L is a versatile power supply that can be used in a variety of Audiocom  
intercom system applications. It directly accepts any AC input power from 100 to 240  
VAC, 50/60 Hz, and it can be configured to power two separate intercom channels or  
one large intercom channel with twice the intercom station capacity. Additionally, the  
PS2000L can be configured for compatibility with Clear-Com* Intercom Systems. The  
PS2000L can be rack mounted or used on a desktop. For rack mounting, optional hard-  
ware is required. For desktop use, four non-marring rubber feet are supplied.  
Figure 1. PS2000L Reference View (See following numbered descriptions)  
1. Combine / Isolate Switch: This pushbutton switch lets you combine the audio  
signals of the two channels to create a single audio channel where all users can  
intercommunicate. Or, you can isolate each channel to create two groups of com-  
pletely independent users.  
* Brand names mentioned are the property of their respective companies.  
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2. Channel Status Indicators and Reset Pushbutton: The indicators are green for nor-  
mal operation and red when there is an overload or short circuit. The Reset push-  
button restores normal operation after the short-circuit or overload has been  
located and fixed.  
3. Universal AC Power Input: The PS2000L accepts any input power in the range  
of 100-240 VAC, 50/60 Hz.  
4. Intercom Channel Connectors: When the Combine / Isolate switch is set to the  
Isolate position, each channel connector is powered separately and has com-  
pletely 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.  
5. Audiocom / Clear-Com Selector Switch (Figure 2): This selector switch sets the  
PS2000L for compatibility with either Audiocom (BALANCED) or Clear-Com  
(UNBALANCED). Compatibility includes channel connector pin-outs, channel  
power requirements, and call signaling requirements. The PS2000L is shipped  
with this switch in the Audiocom position.  
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Audiocom®  
Installation  
Unpacking  
The package contains the following items. Contact the shipper or your Audiocom  
dealer immediately if anything is damaged or missing. Detach and fill out the regis-  
tration card and return it to Telex to properly register your PS2000L.  
Quantity  
Description  
1
1
1
4
1
PS2000L Power Supply  
Warranty and registration card  
User Manual  
Rubber feet (install for desktop use of the PS2000L)  
Power cord  
Configuration Switches  
WARNING  
The following instructions are for use by qualified personnel only.  
To avoid electric shock, do not remove the cover unless you are  
qualified to do so.  
AVERTISSEMENT  
Les instructions qui suivent s'adressent uniquement a un techni-  
cien qualifie. Pour evite des chocs electriques, ne pas ouvrir le  
boitier, a moins d'y entre habilite.  
The Audiocom / Clear-Com switch (S200) is factory set for use with Audiocom in-  
tercom stations. Before using the PS2000L with Clear-Com, remove the top cover  
and change the setting as shown in Figure 2. The top cover is secured by five screws  
on the top and three screws on each side.  
The Combine / Isolate switch position may be changed at any time by inserting a pen  
point or other small object through the front panel. When the switch is in the Com-  
bine position, all users on both channels may intercommunicate. When the switch is  
set to the Isolate position, channels 1 and 2 cannot intercommunicate.  
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Figure 2. Audiocom / Clear-Com Selector Switch (Top Cover Removed)  
Intercom Channel Connections  
Channel Capacity: When connecting intercom stations to the PS2000L, determine  
the total current for all stations on each channel. The total per channel should not ex-  
ceed 2A. If you exceed this limit, the PS2000L will provide an overload indication.  
Note that if you are using DC wallpacks with any intercom stations, you do not need  
to add the current consumption of those stations to the total current.  
Clear-Com Applications: Refer to your Clear-Com system documentation for cable  
wiring and connection details. After connecting the components, perform the power-  
up check on page 10.  
Audiocom Connections: Cable wiring details are shown in Figure 3. Some typical  
applications are shown in Figures 4 and 5. After connecting the components, perform  
the power-up check on page 10.  
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Audiocom®  
TYPICAL 1-CHANNEL CABLE WIRING  
3
2
3
Pair 1  
Pair 2  
2
1 (Both wires)  
1
Shield  
Shield  
Cable Type: 22AWG Stranded, 2-Pair Twisted-wire, with Shield  
Connector Type: 3-Pin XLR Audio (Neutrik or Switchcraft)*  
Pin 1: Common  
Denotes twisted pair.  
Pin 2: Channel Audio / Power  
Pin 3: Channel Audio / Power  
Shield: Earth ground  
Denotes shield.  
TYPICAL 2-CHANNEL CABLE WIRING  
4
3
6
5
4
Pair 1  
Pair 2  
Pair 3  
3
6
5
1 (Both wires)  
Shield  
1
Shield  
Cable Type: 22AWG Stranded, 3-Pair Twisted-wire, with Shield  
Connector Type: 6-Pin XLR Audio (Neutrik only, not compatible with 6-pin Switchcraft)*  
Pin 1: Channel 1 & 2 Common  
Pin 2: No connection  
Denotes twisted pair.  
Denotes shield.  
Pin 3: Channel 1 Audio / Power  
Pin 4: Channel 1 Audio / Power  
Pin 5: Channel 2 Audio / Power  
Pin 6: Channel 2 Audio / Power  
Shield: Earth ground  
3
2
1
“Y” CABLE WIRING  
Ch1  
4
3
6
5
Pair 1  
Pair 2  
Pair 3  
Case  
3
2
1
1 (Both wires)  
Shield  
Ch2  
Shield  
Use second drain wire if available, or add an extra section of wire.  
*
Standard cables are generally constructed using a male connector at one end and a  
female connector at the other end. This allows several cables to be interconnected to  
create longer cable runs. Audiocom master stations, speaker stations and belt packs  
also typically provide both a male and female Neutrik connector for each intercom  
channel. This permits loop-through connection of several intercom stations using the  
standard cables. Audiocom power supplies use a 3-pin male Neutrik connector for  
each channel. Audiocom wallplates use male Neutrik connectors.  
Figure 3. Cable Wiring Diagrams for Audiocom Applications  
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Figure 4. Typical connections using a single PS2000L Power Supply to  
power two channels.  
9
 
 
Audiocom®  
Figure 5. Using two PS2000L Power Supplies to provide a greater capacity  
on each channel.  
Power-Up Check  
1. Plug in any DC wallpacks that are being used with individual intercom stations.  
If you plug in DC wallpacks after applying power to the PS2000L, you may  
get an overload indication at the PS2000L. This is because the stations that  
are being powered by wallpacks will draw current from the PS2000L until  
their own DC supplies are connected.  
2. Plug in the AC power cords for any connected PS2000L Power Supplies. The  
channel status indicators should be green.  
3. If a channel status indicator turns red during operation, try correcting the prob-  
lem by pressing the reset button on the front of the PS2000L. If the problem per-  
sists, unplug the PS2000L and locate the short or overload that is causing the  
problem.  
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Specifications  
General  
Input Power Requirements:  
100 to 240 VAC, 50 / 60 Hz  
Output Power (each channel)  
21 ± 1 VDC, 2A  
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  
Intercom Channels  
General  
Connector Type: One XLR-3M audio connector for each channel. Pin-out depends on setting  
of internal switch S200 for balanced or unbalanced operation as defined below.  
Balanced Mode (S200 set to BAL position)  
Line Terminating Impedance: 300 ohms ± 10%  
Connector Pin-out  
Pin 1  
Pin 2  
Pin 3  
Common (audio and DC return)  
Full-duplex, balanced intercom audio and +24 VDC output  
Full-duplex, balanced intercom audio and +24 VDC output  
Unbalanced Mode (S200 set to UNBAL position)  
Line Terminating Impedance: 150 ohms ± 5%  
Connector Pin-out  
Pin 1  
Pin 2  
Pin 3  
Common (audio and DC return)  
+24 VDC output  
Full-duplex, unbalanced Intercom audio high  
Approvals  
UL, CUL, CE  
11  
 
 
Audiocom®  
Factory Service and Parts Information  
When returning equipment for repair include your return address, telephone number  
and proof of date of purchase, along with a description of the problem.*  
The address for Audiocom equipment returns and parts information is:  
Service Department  
Telex Communications, Inc.  
West 1st Street  
Blue Earth, Minnesota 56013 U.S.A.  
Telephone: (507) 526-3205  
(Collect calls not accepted)  
Warranty Repairs - If in warranty, no charge will be made for the repairs. Equipment  
returned for warranty repair must be sent prepaid and will be returned prepaid.  
Non-Warranty Repairs - Equipment that is not under warranty must be sent prepaid  
to Telex. If requested, an estimate of repair costs will be issued prior to service. After  
your approval and completion of the repairs, the equipment will be returned on a col-  
lect basis. Collect charges may be avoided by sending a signed check for payment in  
full along with your signed estimate approval form (shipping charges are included in  
the estimate).  
* For sales / technical support and system design contact:  
Pro Audio Sales Department  
Telex Communications, Inc.  
9600 Aldrich Avenue South  
Minneapolis, Minnesota 55420 U.S.A.  
Telephone: (612) 884-4051  
(Collect calls not accepted)  
12  
 
 
Notes:  
13  
 
Audiocom®  
Notes:  
14  
 
Notes:  
15  
 
®
TELEX COMMUNICATIONS, INC.  
9600 Aldrich Ave. So., Minneapolis, MN 55420 U.S.A.  
9350-7333-015 Rev. A3, 8/97  
 

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