Telex Intercom System SPS 2001 User Manual

User Instructions  
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Model PS-2001L  
Power Supply  
1
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-20  
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P
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olume  
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Model SPS-2001  
Power Supply  
Audiocom® Intercom Systems  
9350-7699-000 Rev. A, 4/2001  
 
Table of Contents  
Description ................................................................................ 4  
PS-2001L........................................................................................................................................ 4  
SPS-2001 ........................................................................................................................................ 5  
Installation................................................................................. 6  
Unpacking ..................................................................................................................................... 6  
PS-2001L........................................................................................................................................ 6  
SPS-2001 ........................................................................................................................................ 6  
Configuration Switches ................................................................................................................ 6  
Intercom Channel and Program Connections ........................................................................... 6  
Desktop or Rackmount Installation ............................................................................................ 6  
Specifications........................................................................... 12  
General ........................................................................................................................................ 12  
Intercom Channels ..................................................................................................................... 12  
General ........................................................................................................................................ 12  
Balanced Mode (set to BAL position) ....................................................................................... 12  
Unbalanced Mode (set to UNBAL position) ............................................................................. 12  
Speaker Inputs (SPS-2001 Only) ............................................................................................... 12  
Approvals .................................................................................................................................... 12  
Power-Up Check ..................................................................... 12  
3
 
Description  
The PS-2001L and SPS-2001 are versatile power supplies that can be used in a variety of Audiocom® intercom  
system applications. They both directly accept any AC input power from 100 to 240 VAC, 50/60 Hz and can be  
configured to power two separate intercom channels or one large intercom channel with twice the intercom station  
capacity. Additionally, the units can be configured for compatibility with Clear-Com* Intercom Systems. The units  
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. The SPS-2001 also provides a speaker with two mixed inputs making it ideal  
for situations calling for a master station with a microphone / speaker combination.  
PS-2001L  
®
PS-2001L  
1
Combine  
2
Isolate  
1
2
3
4
CH 1  
CH 2  
100-240 VAC 60/50 HZ  
UNBAL  
BAL  
TELEX COMMUNICATIONS, INC. MADE IN USA  
CLASS 2 WIRING 1.5A 24VDC  
5
Figure 1 - PS-2001L Front and Rear Panel Features.  
1. 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.  
2. 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  
fixed.  
3. Universal AC Power Input: The unit 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 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.  
5. BAL / UNBAL Selector Switch: This selector switch allows the user to configure the unit for use in either an  
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  
Audiocom® (BAL) position.  
4
 
SPS-2001  
®
SPS-2001  
1
Combine  
Isolate  
2
Volume  
1
2
3
4
5
CH 1  
CH 2  
INPUT 1  
SPEAKERS  
LINE LEVEL  
1VRMS  
100-240 VAC 60/50 HZ  
UNBAL  
BAL  
TELEX COMMUNICATIONS, INC. MADE IN USA  
INPUT 2  
CLASS 2 WIRING 1.5A 24VDC  
6
Figure 2 - SPS-2001 Front and Rear Panel Features.  
1. Speaker, Inputs, and Volume Control: Two audio inputs are provided. The inputs are combined internally and sent  
as a monaural signal to the internal speaker amplifier. The Volume control adjusts the level to the front panel  
speaker. Typically, these inputs are used with the speaker outputs of a master station when the master station is set  
for use with a panel microphone and speaker instead of a headset.  
2. 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.  
3. 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  
fixed.  
4. Universal AC Power Input: The unit accepts any input power in the range of 100-240 VAC, 50/60 Hz.  
5. 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.  
6. BAL / UNBAL Selector Switch: This selector switch allows the user to configure the unit for use in either an  
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  
Audiocom® (BAL) position.  
5
 
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 registration card and return it to Telex to properly register the product.  
PS-2001L  
Qty  
1
1
Description  
PS-2001L Power Supply  
Warranty and registration card  
User Manual  
1
4
1
Rubber Feet (install for desktop use of the PS-2001L)  
Power Cord  
SPS-2001  
Qty  
1
1
Description  
PS-2001L Power Supply  
Warranty and registration card  
User Manual  
1
4
1
Rubber Feet (install for desktop use of the PS-2001L)  
Power Cord  
1
RCA to RCA Patch Cord  
Configuration Switches  
The BAL / UNBAL switch (located on the rear of the unit) is set to the Balanced (Audiocom) position when the unit  
is shipped from the factory. To set the switch to the Unbalanced (Clear-Com) mode, use a pointed object such as a  
pen to push in the switch.  
The Combine / Isolate switch (located on the front of the unit) can be changed at any time by using a pointed object  
such as a pen to push in the switch. When the switch is in the Combine position, all users on both channels may  
intercommunicate. When the switch is set to the Isolate position, channels 1 and 2 cannot intercommunicate.  
Intercom Channel and Program Connections  
Channel Capacity: When connecting intercom stations to the PS-2001L or SPS-2001, determine the total current  
for all stations on each channel. The total per channel should not exceed 2A. If you exceed this limit, an overload  
indication will be provided and the output of the power supply will be turned off. Once the overload is corrected, the  
overload indication will disappear and the power supply output will be turned on. Note that if you are using DC  
wallpacks with some intercom stations, you do not need to add the current consumption of those stations to the total  
current.  
Audiocom Connections: Intercom Cable wiring details are shown in Figure 3. Speaker interconnection cables  
(SPS-2001 only) are standard RCA phono types. For program input cable wiring, refer to your master intercom  
station user manual. Some typical intercom applications are shown in Figures 4 through 8.  
Clear-Com Applications: Refer to your Clear-Com system documentation for intercom cable wiring and connection  
details.  
Desktop or Rackmount Installation  
For desktop use, install the four supplied rubber feet to the bottom of the unit. Do not obstruct the cooling vents  
when using the unit on a desktop.  
For rackmounting, use an optional Audiocom Rackmount Kit. Several kits are available to meet the requirements of  
your particular system. Follow the assembly instructions supplied with the rackmount kit.  
6
 
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  
Pin 2: Channel Audio / Power  
Denotes twisted pair.  
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.  
7
 
1
2
Y
1-channel cable  
2-channel cable  
Ycable  
PS-2001L  
Power Supply  
Combine / Isolate Switch  
set to Isolate  
CH  
2
CH  
1
100-240 VAC 60/50 HZ  
TELEX COMMUNICATIONS, INC. MADE IN USA  
BAL  
UNBAL  
CLASS  
2
WIRING 1.5A 24VDC  
1
1
US2000A  
Master Station  
PUSH  
PUSH  
PROGRAM  
INPUTS  
1
SPEAKERS  
LINE LEVEL  
VOL  
PGM  
VOL  
2
+
-
1
VRMS  
1
PGM  
2
EXP  
OUT  
P.A.  
BAL  
UNBAL  
-
OUT  
IN  
CHN  
1
CHN  
2
12-15 VDC  
-
To all stations  
on channel 1  
To all stations  
on channel 2  
1
1
BP-1000  
BP-1000  
HEADSET  
LINES  
HEADSET  
LINES  
1
1
BP-1000  
BP-1000  
HEADSET  
LINES  
HEADSET  
LINES  
Y
BP-2000  
Note: A JB-2 Junction Box may be  
used instead of the Ycables. The  
JB-2 provides a means of combining  
two channels, while also allowing the  
single channels to be continued  
directly from the junction box.  
HEADSET  
LINES  
2
BP-2000  
HEADSET  
LINES  
Y
BP-1000  
BP-1000  
HEADSET  
LINES  
HEADSET  
LINES  
Figure 4 - Typical connections using a single PS-2001L Power Supply to power two channels.  
8
 
1
2
Y
1-channel cable  
2-channel cable  
Ycable  
SPS-2001  
Power Supply  
Combine / Isolate Switch  
set to Isolate  
CH  
2
CH  
1
SPEAKER  
INPUT  
INPUT  
1
2
100-240 VAC 60/50 HZ  
TELEX COMMUNICATIONS, INC. MADE IN USA  
BAL  
LINE LEVEL  
1
VRMS  
UNBAL  
CLASS  
2
WIRING 1.5A 24VDC  
Speaker Inter-  
connect cable.  
1
1
US2000A  
Master Station  
PUSH  
PUSH  
PROGRAM  
INPUTS  
Program Input  
cable. From 2  
audio sources  
1
2
SPEAKERS  
LINE LEVEL  
VOL  
PGM  
VOL  
2
+
-
1
VRMS  
1
PGM  
EXP  
OUT  
P.A.  
BAL  
UNBAL  
-
OUT  
IN  
CHN  
1
CHN  
2
12-15 VDC  
-
To all stations  
on channel 1  
To all stations  
on channel 2  
1
1
BP-1000  
BP-1000  
HEADSET  
LINES  
HEADSET  
LINES  
1
1
BP-1000  
BP-1000  
HEADSET  
LINES  
HEADSET  
LINES  
Y
BP-2000  
Note: A JB-2 Junction Box may be  
used instead of the Ycables. The  
JB-2 provides a means of combining  
two channels, while also allowing the  
single channels to be continued  
directly from the junction box.  
HEADSET  
LINES  
2
BP-2000  
HEADSET  
LINES  
Y
BP-1000  
BP-1000  
HEADSET  
LINES  
HEADSET  
LINES  
Figure 5 - Typical connections using one SPS-2001 Power Supply for two intercom channels. The two program sources are  
monitored independently by their intercom channels. All audio (program and intercom) is monitored as a monaural mix in the  
SPS-2001 speaker. The US2000A is set for monaural speaker output (default).  
9
 
1
2
Y
1-channel cable  
2-channel cable  
Ycable  
SPS-2001  
Power Supply  
Combine / Isolate Switch  
set to Isolate  
SPK1000  
Powered Speaker  
TELEX COMMUNICATIONS, INC.  
MADE IN USA  
CH  
2
CH  
1
SPEAKER  
INPUT  
1
INPUT  
INPUT  
1
2
+
-
INPUT  
2
100-240 VAC 60/50 HZ  
BAL  
LINE LEVEL  
VRMS  
TELEX COMMUNICATIONS, INC. MADE IN USA  
BAL  
12-15 VDC  
1
LINE LEVEL  
1
VRMS  
UNBAL  
CLASS  
2
WIRING 1.5A 24VDC  
Speaker inter-  
connect cables.  
1
1
US2000A  
Master Station  
PUSH  
PUSH  
PROGRAM  
INPUTS  
Program input  
cable. From 2  
audio sources  
1
2
SPEAKERS  
LINE LEVEL  
VOL  
PGM  
VOL  
2
+
-
1
VRMS  
1
PGM  
EXP  
OUT  
P. A .  
BAL  
UNBAL  
-
OUT  
IN  
CHN  
1
CHN  
2
12-15 VDC  
-
To all stations  
on channel 1  
To all stations  
on channel 2  
1
1
BP-1000  
BP-1000  
HEADSET  
LINES  
HEADSET  
LINES  
1
1
BP-1000  
BP-1000  
HEADSET  
LINES  
HEADSET  
LINES  
Y
BP-2000  
Note: A JB-2 Junction Box may be  
used instead of the Ycables. The  
JB-2 provides a means of combining  
two channels, while also allowing the  
single channels to be continued  
directly from the junction box.  
HEADSET  
LINES  
2
BP-2000  
HEADSET  
LINES  
Y
BP-1000  
BP-1000  
HEADSET  
LINES  
HEADSET  
LINES  
Figure 6 - Adding an SPK1000 to the example in Figure 5. The two program sources are monitored independently by the intercom  
channels. The SPS-2001 monitors intercom channel 1 and program 1. The SPK1000 monitors intercom channel 2 and program 2.  
The US2000A is set for binaural speaker output as described in the US2000A User Manual.  
10  
 
PS-2001L  
Channel 1 Power  
Combine / Isolate Switch  
set to Combine  
PS-2001L  
Channel 2 Power  
Combine / Isolate Switch  
set to Combine  
CH  
2
CH  
2
CH  
1
CH  
1
100-240 VAC 60/50 HZ  
100-240 VAC 60/50 HZ  
TELEX COMMUNICATIONS, INC. MADE IN USA  
BAL  
TELEX COMMUNICATIONS, INC. MADE IN USA  
BAL  
UNBAL  
UNBAL  
CLASS  
2
WIRING 1.5A 24VDC  
CLASS  
2
WIRING 1.5A 24VDC  
1
1
PUSH  
PUSH  
PROGRAM  
INPUTS  
1
2
SPEAKERS  
LINE LEVEL  
VOL  
PGM  
VOL  
PGM  
+
-
1
VRMS  
1
2
EXP  
OUT  
P. A .  
BAL  
UNBAL  
-
OUT  
IN  
CHN  
1
CHN  
2
12-15 VDC  
-
PS-L  
(Optional)  
1
1
1
1
To ½ of stations  
on channel 1  
To ½ of stations To ½ of stations  
on channel 1 on channel 2  
To ½ of stations  
on channel 2  
Figure 7 - Using two PS-2001L Power Supplies to provide a greater capacity on each channel.  
SPS-2001  
Channel 1 Power  
Combine / Isolate Switch  
set to Combine  
SPS-2001  
Channel 2 Power  
Combine / Isolate Switch  
set to Combine  
CH  
2
CH  
2
CH  
1
CH  
1
SPEAKER  
SPEAKER  
INPUT  
1
INPUT  
1
INPUT  
2
INPUT  
2
100-240 VAC 60/50 HZ  
100-240 VAC 60/50 HZ  
TELEX COMMUNICATIONS, INC. MADE IN USA  
BAL  
TELEX COMMUNICATIONS, INC. MADE IN USA  
BAL  
LINE LEVEL  
LINE LEVEL  
1
VRMS  
UNBAL  
1
VRMS  
UNBAL  
CLASS  
2
WIRING 1.5A 24VDC  
CLASS  
2
WIRING 1.5A 24VDC  
1
4
4
1
PUSH  
PUSH  
PROGRAM  
INPUTS  
1
2
SPEAKERS  
LINE LEVEL  
VOL  
PGM  
VOL  
PGM  
+
-
1
VRMS  
1
2
EXP  
OUT  
P.A.  
BAL  
UNBAL  
-
OUT  
IN  
CHN  
1
CHN  
2
12-15 VDC  
-
US2000A  
Internal DIP  
switches set  
for binaural  
operation  
PS-L  
(Optional)  
Program input  
cable. From 2  
audio sources  
1
1
1
1
To ½ of stations  
on channel 1  
To ½ of stations To ½ of stations  
on channel 1 on channel 2  
To ½ of stations  
on channel 2  
Figure 8 - Using two SPS-2001 Power Supplies to provide a greater capacity on each channel. Using two SPS-2001 Power  
Supplies also lets you independently monitor and adjust volume for both intercom channels without the need for a separate  
powered loudspeaker. In this application, the US2000A should be set for binaural speaker output as described int he US2000A  
manual.  
11  
 
Power-Up Check  
1. 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.  
2. Plug in the AC power cords for any connected PS-2001L or SPS-2001 Power Supplies. The channel status  
indicators should be green.  
3. 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.  
Specifications  
General  
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  
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 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 (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  
Speaker Inputs (SPS-2001 Only)  
Type: RCA Phone Jack  
Tip: Speaker + Input  
Sleeve: Speaker - Input  
Approvals  
UL, CUL, CE  
12  
 
TRADEMARKS  
Audiocom® is a registered trademark of Telex Communications. Names of other products mentioned herein are used for identifica-  
tion purposes only and may be trademarks and/or registered trademarks of their respective companies.  
WARRANTY INFORMATION  
Products are warranted by Telex Communications, Inc. to be free from defects in materials and workmanship for a period of one  
year from the date of sale.  
The sole obligation of Telex during the warranty period is to provide, without charge, parts and labor necessary to remedy covered  
defects appearing in products returned prepaid to Telex. This warranty does not cover any defect, malfunction or failure caused  
beyond the control of Telex, including unreasonable or negligent operation, abuse, accident, failure to follow instructions in the  
manual, defective or improper associated equipment, attempts at modification and repair not authorized by Telex, and shipping  
damage. Products with their serial numbers removed or effaced are not covered by this warranty.  
To obtain warranty service, follow the procedures entitled Procedure for Returnsand Shipping to Manufacturer for Repair or  
Adjustment.  
This warranty is the sole and exclusive express warranty given with respect to Audiocom products. It is the responsibility of the user  
to determine before purchase that this product is suitable for the users intended purpose.  
ANY AND ALL IMPLIED WARRANTIES, INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY ARE LIMITED TO THE  
DURATION OF THIS EXPRESS LIMITED WARRANTY.  
NEITHER TELEX NOR THE DEALER WHO SELLS TELEX PRODUCTS IS LIABLE FOR INCIDENTAL OR CONSEQUENTIAL  
DAMAGES OF ANY KIND.  
CUSTOMER SUPPORT  
Technical questions should be directed to:  
Customer Service Department  
Telex  
12000 Portland Avenue South  
Burnsville, MN 55337 U.S.A  
Telephone: (952) 884-4051  
Fax: (952) 884-0043  
RETURN SHIPPING INSTRUCTIONS  
Procedure for Returns  
If a return is necessary, contact the dealer where this unit was purchased.  
If a return through the dealer is not possible, obtain a RETURN AUTHORIZATION from:  
Customer Service Department  
Telex Communications, Inc.  
Telephone: 1-800-392-3497 or (952) 884-4051  
Fax: 1-800-323-0498 or (952) 884-0043  
DO NOT RETURN ANY EQUIPMENT DIRECTLY TO THE FACTORY WITHOUT FIRST OBTAINING A RETURN AUTHORIZA-  
TION.  
Be prepared to provide the company name, address, phone number, a person to contact regarding the return, purchase order  
number, the type and quantity of equipment, a description of the problem and the serial number(s).  
Shipping to Manufacturer for Repair or Adjustment  
All shipments of products should be made via United Parcel Service or the best available shipper prepaid. The equipment should  
be shipped in the original packing carton; if that is not available, use any suitable container that is rigid and of adequate size. If a  
substitute container is used, the equipment should be wrapped in paper and surrounded with at least four inches of excelsior or  
similar shock-absorbing material. All returns must include the return authorization number. Units sent for repair or adjustment DO  
NOT need a return authorization number  
Factory Service department  
Telex Communications, Inc.  
West 1st Street  
Blue Earth, MN 56013 U.S.A.  
Upon completion of any repair the equipment will be returned via United Parcel Service or specified shipper collect.  
13  
 

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