RTS PS-15 User manual

Model PS-15
Power Supply
9350678600 Rev H 11/2006

PROPRIETARY NOTICE
The product information and design disclosed herein were originated by
and are the property of Telex Communications, Inc. Telex reserves all
patent, proprietary design, manufacturing, reproduction, use and sales
rights thereto, and to any article disclosed therein, except to the extent
rights are expressly granted to others.
COPYRIGHT NOTICE
Copyright 2006 by Telex Communications, Inc. All rights reserved.
Reproduction, in whole or in part, without prior written permission from
Telex is prohibited.
WARRANTY NOTICE
See the enclosed warranty card for further details.
CUSTOMER SUPPORT
Technical questions should be directed to:
Customer Service Department
RTS/Telex Communications, Inc.
12000 Portland Avenue South
Burnsville, MN 55337 USA
Telephone: [phone]
Fax: [phone]
RETURN SHIPPING INSTRUCTIONS
Customer Service Department
Telex Communications, Inc. (Lincoln, NE)
Telephone: [phone]
Fax: [phone]
Factory Service: 800-553-5992
Please include a note in the box which supplies the company name,
address, phone number, a person to contact regarding the repair, the type
and quantity of equipment, a description of the problem and the serial
number(s).
SHIPPING TO THE MANUFACTURER
All shipments of product should be made via UPS Ground, prepaid (you
may request from Factory Service a different shipment method). Any
shipment upgrades will be paid by the customer. The equipment should
be shipped in the original packing carton. If the original carton 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 (4) inches of excelsior or similar
shock-absorbing material. All shipments must be sent to the following
address and must include the Proof of Purchase for warranty repair.
Upon completion of any repair the equipment will be returned via
United Parcel Service or specified shipper, collect.
Factory Service Department
Telex Communications, Inc.
8601 East Cornhusker Hwy.
Lincoln, NE 68507 U.S.A.
Attn: Service
This package should include the following:

TABLE OF CONTENTS
PROPRIETARYNOTICE 2
COPYRIGHTNOTICE , 2
PATENTNOTICE 2
UNPACKINGANDINSPECTION 2
WARRANTYThWORMATION.. 2
RETURNSHWPINGINSTRUCTIONS 2
SECTION 1: DESCRIPTION & SPECIFICATIONS 4
1.1DESCRIPTION. 4
1.2MODELPS15SPECIFICATIONS ,... 4
SECTION 2: INST ALLA TION 6
2.1MECHANICALINSTALLATION 5
2.2OUTPUTS. 5
2.3POWERANDINPUTPOWERSELECTION 5
2.4ELEC1RICALPERFORMANCEANDLOADING 5
2.5TANDEMOPERATION 5
2.6AUDIOOUTPUT/INPUT 5
2.7STANDARDUSERSTATIONCONNECTIONS 9
SECTION 3: OPERA TION , 7
SECTION7:DIAGRAMS 8
Page 3

SECTION I:
DESCRIPTION AND SPEClFICA TIONS 1.2 MODEL PSIS SPECIFICATIONS
1.1 DESCRIJYrION Outputs
One powered channel, CHI, (audio + DC + 200
ohm/400 ohm 10% termination}, and one passive chan-
nel' CH2, (audio + 200/400 ohm 20% termination}.
The Model PS15Power Supply is designedto work within
theTW Intercom System. The PS15is suitable for small to
medium sizedTW Intercom Systems. Output Voltage
No Load
Full Load 32.0 +2.0. -1.0 volts
24.0 volts. nominal
The unit is self-contained and featurestwo-channel opern-
tion: one "wet" channel with 24 to 32 volts DC and one
"dry" channel without voltage potential. Each channel
provides an audio termination impedance of 200 or 400
ohms (switch selectable).
Output Impedance
200 or 400 ohms 20%. switchable. On powered
channel. 200 ohms. nominal. is maintained from 18.0
to 33.0 volts.
This power supply allows speechsignalsandDC to exist on
thesamewire (Channel I). The power supply's outputs are
protected against short circuit conditions with recovery
being automatic and instantaneous.
Output Current
S13nd'Jfd Option
*p Option (234 V)
#D Option (IOOV)
Fault Current
.9 ampereat 21/+4-2 volts. DC
.9 ampereat 21/+4-2 volts. DC
.8 ampereat 21/+4-2 volts. DC
1.5amperesat 0.0 volts. DC
A single PS15Power Supply canpower 6 to 30 userstations
(depending on model and combination -see specifications).
Signal Level
Nominal
Maximum
If still more user stations are needed, two PS15 Power
Supplies can be coupled together to double the powering
capability: a 1/4-inch 3-circuit phone jack is available on
eachpower supply for this purpose. This connectorcanalso
be used as a one-way output port when monitoring or
recording the intercom audio signals.
2.0 volts peak to peak
5.0 volts peakto peak
Frequency Response
100 hertz to 20 kilohertz +1, -5 dB
When two PS15 supplies are combined. toggling a rear
pmlel switch on each supply will keep the audio level
constallt. Two PS15.scanpower asmany stationsasaPS31
(with DC loadevenly distributed betweenthetwo supplies).
Since the PS31 supplies more voltage than the PS15under
full load. thePS31 is better suited to power alarge system
spreadover a large area.
Signal-to-Noise Ratio
Reference2.0 volts. peak to peak: 60 dB nomina]
Mains Voltage
Standard
*POption
#D Option
117volts :t10%. 50 -60 hertz
234 volts :t10% 50-60 hertz
100volts +10%. -5%.50-60 hertz
There are two XLR-type 3-pin male connectors mounted on
the rear panel for output interconnection to the user stations.
Mains Amperes
0.40at 117volts :t10%, 50-60 hertz
0.20at 234 volts :t10%, 50-60 hertz
0.40at 100volts +10%, -5%,50-60 hertz
ThePS15hasbeendesignedtomeetUL 1419specifications
(professional Audio and Video Equipment). Environmental
Temperature
Operating
StoralJe
o
Humidity
The PSIS Power Supply may be usedin portable applica-
tions (use optional MCP8 channels) or in standard EIA
equipment racks (useoptional MCPl or MCP2 rack mount-
ing kits).
00 to 50°C
-40° to 70°C
0 to 95(.70,non-condensing
Dimensions
Height
Width
Depth
The PS15 is one rack unit high and one-half rack wide. A
singlePS15may berack-mounted singly or two PS15.smay
bemounted side-by-side.
1.72inches (44 millimeters)
8.186 inches (207.9 millimeters)
8.33 inches(211.6 millimeters)
Weight
PSl5
MCPl
MCP2
4.29 pounds(1.95 kilograms)
1.0pounds(0.454 kilograms)
1.0pounds(0.454 kilograms)
Finish
Thennoplastic front panel. aluminum case. light gray
finish
Page 4

SECTION 2: INSTALLATION at 800 milliamperes when connected in series, but with
100volts at the primaries the output voltage is 26 volts.
2.1 MECIIANICAL INSTALLATION
Note: The European version of the Model PSIS is
equipped with a special three conductor European power
cord / plug set. The plug is the a CEE7n style rated for
234 volt /10 to 16 ampere service. The European version
is also equipped with a metric fuse holder and an
internationaJ Sby 20 millimeter fu~.
The Model PSl5 can be installed in 3 ways: a single unit
mounted in a half rack space using an optional Modcl
MCP2 Kit for rack mounting a single unit; or two PSl5
supplies mounted side by side using the optional MCPl
Kit for rack mounting two units side by sidc; or frce
standing using the optional MCP8 Kit for adding side
channels for non-rack mounting portable 1,Ise.
2.4 ELEcrRICAL PERFORMANCE AND LOADING
2.2 OUTPUTS
Located on the back panel are the outputs. The PS15 is
designed to accept A3F 3-pin female connectors. Thefirst table on the nextpageshowsoperating distances
versusmodel numbersfor the PS15power supply. The
second table on the next page shows the maximum
number of user stationsthat the PS15can sustain. For
combinations of stations, multiply the current values in
the first table timesthe number of units of that type. The
sumof all the currents should be lessthan 1 ampere for
thePS15.
2.3 POWER and INPUT POWER SELECTION
2.5 TANDEM OPERATION
Two Model PS15 power supplies can be used in tandem to
double the number of stations that can be powered. First,
the stations are divided between the supplies. Then, a
stereopatch cord is plugged into the stereojack on the rear
panel of each supply. The DUAL/NORMAL switch is set
to DUAL. This switch corrects the halving of the
impedance of two supplies in parallel by doubling the
impedanceof eachsupply from 200 to 400 ohms. The line
signal levels are maintained because the net impedance is
now 200 ohms.
The power cord is attached to the rear panel. Power
selection is normally done at the factory. If field change
of the input mains voltage is required, disconnect the
power, open the case, and set jumpers as follows (using
layout diagram on page 10):
For 117 VAC operation, T1 is Signal Transformer
LP56-425 or equivalent; install W1, W2, W4, and W6,
remove W3 and W5. * (Standard-American ]
For 234 VAC operation, T1 is Signal Transformer
LP56-425 or equivalent; install W3, W4, and W6,
remove W1, W2, and W5. * [*P Option-European]
For 100 VAC operation, TI is Signal Transformer
LP30-800 or equivalent: install Wl, W2, and W5,
remove W3, W4, and W6. ** [#D Option-Japanese)
The fuse must aJsobe changed to the rating shown on the
rear panel. 2.6 AUDIO OUTPUT I INPUT
The AUDIO COUPLING CHI-CH2 jack on the rear panel
provides an unbuffered, unbalanced audio output for each
of the two channels. The level ranges from
-10 dBu to 0 dBu. An isolation transformer is
recommended to prevent a ground loop between the
intercom system common and other grounds.
.Transformer LP56-425 is a dual primary, dual secondary
transformer. The primaries are 115 volts each. The two
secondaries are rated 28 volts at 850 milliamperes when
connected in parallel. For 115 volt operation, the
primaries are in parallel, and the secondaries are in
parallel. For 230 volt operation, the primaries are in
series, and the secondaries are in parallel. The AUDIO COUPLING jack may also be used to input a
signal into the system. Use at least a 2.2 kilohm resistor in
serieswith the signal source to prevent loading of the RTS
Systemsintercom line. Use an audio isolation tranformer
to prevent ground loops.
..Transformer LP30-800 is a dual primary, dual
secondary transformer. The primaries are normally rated
115 volts each, but jn this case will be operated at 100
volts each. The secondaries are normally rated at 30 volts
Page 5

The table bclow lists maximum orcrating distanccs of a PS15 powcr supply vs. user station model # .Assumptions: 22
gagewire, stations orcrating with 250 hcadphonc load, 10dB bclow clipping.
Model # Quantity Itot (milliamperes) Distance (rcct) Distance (meters)
BP300 II
fill
1531
5024
BP300L 13098 944
BP317 1n
~
5024 1531
BP320 14131 1259
BP320L 1.Q1
~
2774 846
BP325(St)
BP325SM..(St)
12323 708
1@
1QQ
ill
3098 944
SPK300 11859 567
SPK300L 11487 453
..Surface mount version. (St) means stereo configuration.
Thetable below listsmaximumnumberof stationsversusUserStation Type & Model Number (usingaPS8or PS15
powersupply). ThePS8ratedcurrent is430milliamperes,thePS15ratedcurrent js 1000milliamperes.
StationType Model QtyPSB QtyPS15
Belt Pack,Headset BP300 II 27
Belt Pack, Headset, CalI Light BP300L 716
Belt Pack, Headset, Single Channel BP317 27
11
Belt Pack, Headset, Stereo BP320 922
Belt Pack, Headset, Stereo, Call Light BP320L 615
Belt Pack, Headset, Stereo, Call Light, Microprocessor BP325(St)
Belt Pack, Headset, Stereo, Call Light, Microprocessor, Surface Mount BP325(St)
511
716
Speaker, Portable . SPK300 410
SPK300L
Speaker, Portable, Call Light ** 38
Note: Capacity can be increased by using two power supplies, splitting the load between the two supplies,
interconnecting the supplies audio only, and by switching the power supply impedance switches from NORMal to
DUAL. .Also valid for RMS300. ..Also valid for RMS300L. WM300, CM300 similar to BP300. WMS300 similar
to SPK300. (St) Means Stereo configuration.
Page 6

SEcrlON 3: OPERATING INSTRUcrlONS
Figure 3-1
Model PS15Front Panel
Figure3.2
Model PSISRear Panel
Page 7

SECTION 7: DIAGRAMS / DRA WINGS
Document
Number ~Ii1le. ~
PSIS Block Diagram 8
9
OD2368 AOutline Drawing, Model PS15Power Supply
ALayout, Printed Circuit Assembly, (PCA), Model PS 15 Power Supply 10
Schematic Diagram. Model PS 15 Power Supply. Sheet 1 of 1 11
SD6759 B
B12Installation Illustration -MCP Components
PSIS Block Diagram
Page 8

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Layout, Printed Circuit
Assembly, Model PSIS
Power Supply
Page 10

rMPEDANCE SELECT
(REAR PANEL)
~
0'4
'N523'e
5.'V
VOLTAGES INDICATED BY TEST POINTS HAVE 2~ TO!..ERANCE.
TOP VALUE IS NO LOAD CONDITION. BOTTOM VALUE IS
FULL LOAD (1 AMP) CONDITION. VOLTAGES APPLY TO INPUT
VOLTAGES SHOWN.
5
0'5
'N523'B
5.'V
G FOR1OOVACOPERATION:
INSTALL W1.W2 AND WS.
USE TRANSFORMER (11SVX2.1SVX2.24VA) RTSlf23O1-OO27-OO.
FOR 117VAC OPERATION:
INSTALL W1.W2.W4 AND W6.
USE TRANSFORMER (11SVX2.28VX2.24VA) RTSII23O1-OO26-OO.
FOR 234VAC OPERATION:
INSTALL W3.W4 AND W6.
USE TRANSFORMER (11SVX2.28VX2.24VA) RTSlf23O1-OO26-OO.
~ THERMAL BREAKER 95 DEGREES CELS~US OPEN~NG TEMPERATURE
LOCATED BETWEEN T1 AND T2.
2. CAPACrTANCE VALUES SHOWN: MrCROFARADS/VOLTS.
,. ALL RESrSTORS ARE rN OHMS. ,/4- WATT. CARBON FrLM. +-5~.
NOTES: UNLESS OTHERWISE SPECIFIED Page 11
ICONTRACT No.1
IRTS SYSTEMS Bu'.bank. Callfa'.nla ---
iD'.own
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c:necked SCHEMATrC DrAGRAM. TW POWER SUPPLY.
MODEL PS15 DWGNO
SIZE
J:ssued
NOT USED: 013
LAST USED: 017 .D2O.F"1.J1.P3.R27 .52. T2. TP7 .W7.U1.DS1 -..,-,1

[I I n II
J PORTABLED SELF STANDING
WITH MCP8
PS15
I: [ I I n II
1;] SINGLEo RACK MOUNT
o D 0 WITH MCP2
PS15
~ 1 Ii II
U D PS15 I I n II
]) DUALo RACK MOUNT
D o WITH MCP1
PS15
I fffffi(f). o 011
]] DUAL(f) .O 0 o RACK MOUNT
o WITH MCP 1
MRT327 AND MRT327
=
~ III II
U PS15 =
I a!E~.~.0.@II' ~
D DUAL(() .: ..0. @ o RACK MOUNT
o WITH MCP 1
MCE325 AND MCE325
[';I 110 II
~ PS15
Installation Illustration'---MCP Components
Page 12