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.

C OPYRIGHT N OTICE

Copyright 2006 by Telex Communications, Inc. All rights reserved.

Reproduction, in whole or in part, without prior written permission from

Telex is prohibited.

W ARRANTY N OTICE

See the enclosed warranty card for further details.

C USTOMER S UPPORT

Technical questions should be directed to:

Customer Service Department

RTS/Telex Communications, Inc.

12000 Portland Avenue South

Burnsville, MN 55337 USA

Telephone: 800-392-3497

Fax: 800-323-0498

S HIPPING TO THE M ANUFACTURER

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:

R ETURN S HIPPING I NSTRUCTIONS

Customer Service Department

Telex Communications, Inc. (Lincoln, NE)

Telephone: 402-467-5321

Fax: 402-467-3279

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).

TABLE OF CONTENTS

PROPRIETARYNOTICE

COPYRIGHTNOTICE

PATENTNOTICE

UNPACKINGANDINSPECTION

WARRANTYThWORMATION..

,

RETURNSHWPINGINSTRUCTIONS

SECTION 1: DESCRIPTION & SPECIFICATIONS

1.1 DESCRIPTION.

1.2MODELPS15SPECIFICATIONS

SECTION 2: INST ALLA TION

2.1MECHANICALINSTALLATION

2.2 OUTPUTS.

2.3POWERANDINPUTPOWERSELECTION

2.4ELEC1RICALPERFORMANCEANDLOADING

2.5TANDEMOPERATION

2.6AUDIOOUTPUT/INPUT

2.7STANDARDUSERSTATIONCONNECTIONS

SECTION 3: OPERA TION

SECTION7:DIAGRAMS

,...

,

5

5

5

4

4

6

5

5

5

9

7

2

2

2

2

2

2

4

8

Page 3

SECTION I:

DESCRIPTION AND SPEClFICA TIONS

1.1 DESCRIJYrION

The Model PS 15 Power Supply is designed to work within the TW Intercom System. The PS 15 is suitable for small to medium sized TW Intercom Systems.

The unit is self-contained and features two-channel operntion: 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).

This power supply allows speech signals and DC to exist on the same wire (Channel I). The power supply's outputs are protected against short circuit conditions with recovery being automatic and instantaneous.

A single PS 15 Power Supply can power 6 to 30 user stations

(depending on model and combination -see specifications).

If still more user stations are needed, two PS 15 Power

Supplies can be coupled together to double the powering capability: a 1/4-inch 3-circuit phone jack is available on each power supply for this purpose. This connector can also be used as a one-way output port when monitoring or recording the intercom audio signals.

When two PS15 supplies are combined. toggling a rear pmlel switch on each supply will keep the audio level constallt. Two PS 15. s can power as many stations as a PS31

(with DC load evenly distributed between the two supplies).

Since the PS31 supplies more voltage than the PS15 under full load. the PS31 is better suited to power a large system spread over a large area.

There are two XLR-type 3-pin male connectors mounted on the rear panel for output interconnection to the user stations.

The PS 15 has been designed to meet UL 1419 specifications

(professional Audio and Video Equipment).

The PSIS Power Supply may be used in portable applications (use optional MCP8 channels) or in standard EIA equipment racks (use optional MCPl or MCP2 rack mounting kits).

The PS 15 is one rack unit high and one-half rack wide. A single PS 15 may be rack -mounted singly or two PS 15. s may be mounted side-by-side.

1.2 MODEL PSIS SPECIFICATIONS

Outputs

One powered channel, CHI, (audio + DC + 200 ohm/400 ohm 10% termination}, and one passive channel' CH2, (audio + 200/400 ohm 20% termination}.

Output Voltage

No Load

Full Load

32.0 +2.0. -1.0 volts

24.0 volts. nominal

Output Impedance

200 or 400 ohms 20%. switchable. On powered channel. 200 ohms. nominal. is maintained from 18.0

to 33.0 volts.

Output Current

S13nd'Jfd Option

*p Option (234 V)

#D Option (IOOV)

Fault Current

.9 ampere at 21/+4-2 volts. DC

.9 ampere at 21/+4-2 volts. DC

.8 ampere at 21/+4-2 volts. DC

1.5 amperes at 0.0 volts. DC

Signal Level

Nominal

Maximum

2.0 volts peak to peak

5.0 volts peak to peak

Frequency Response

100 hertz to 20 kilohertz +1, -5 dB

Signal-to-Noise Ratio

Reference 2.0 volts. peak to peak: 60 dB nomina]

Mains Voltage

Standard

*POption

#D Option

117 volts :t10%. 50 -60 hertz

234 volts :t10% 50-60 hertz

100 volts +10%. -5%.50-60 hertz

Mains Amperes

0.40 at 117 volts :t10%, 50-60 hertz

0.20 at 234 volts :t10%, 50-60 hertz

0.40 at 100 volts +10%, -5%,50-60 hertz

Environmental

Temperature

Operating 00 to 50°C

-40° to 70°C

0 to 95(.70, non-condensing

Humidity

Dimensions

Height

Width

Depth

1.72 inches (44 millimeters)

8.186 inches (207.9 millimeters)

8.33 inches (211.6 millimeters)

Weight

PSl5

MCPl

MCP2

4.29 pounds (1.95 kilograms)

1.0 pounds (0.454 kilograms)

1.0 pounds (0.454 kilograms)

Finish

Thennoplastic front panel. aluminum case. light gray finish

Page 4

SECTION 2: INSTALLATION

2.1 MECIIANICAL INSTALLATION

at 800 milliamperes when connected in series, but with

100 volts at the primaries the output voltage is 26 volts.

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.

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 S by 20 millimeter fu~.

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.

2.3 POWER and INPUT POWER SELECTION

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):

The first table on the next page shows operating distances versus model numbers for the PS15 power supply. The second table on the next page shows the maximum number of user stations that the PS15 can sustain. For combinations of stations, multiply the current values in the first table times the number of units of that type. The sum of all the currents should be less than 1 ampere for the PS15.

2.5 TANDEM OPERATION

For 117 V AC operation, T1 is Signal Transformer

LP56-425 or equivalent; install W1, W2, W4, and W6, remove W3 and W5. * (Standard-American ]

For 234 V AC operation, T1 is Signal Transformer

LP56-425 or equivalent; install W3, W4, and W6, remove W1, W2, and W5. * [*P Option-European]

For 100 V AC operation, TI is Signal Transformer

LP30-800 or equivalent: install Wl, W2, and W5, remove W3, W4, and W6. ** [#D Option-Japanese)

Two Model PS 15 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 stereo patch cord is plugged into the stereo jack 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 impedance of each supply from 200 to 400 ohms. The line signal levels are maintained because the net impedance is now 200 ohms.

The fuse must aJso be changed to the rating shown on the rear panel.

2.6 AUDIO OUTPUT I INPUT

.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.

..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

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.

The AUDIO COUPLING jack may also be used to input a signal into the system. Use at least a 2.2 kilohm resistor in series with the signal source to prevent loading of the RTS

Systems intercom line. Use an audio isolation tranformer to prevent ground loops.

Page 5

The table bclow lists maximum orcrating distanccs of a PS15 powcr supply vs. user station model # .Assumptions: 22 gage wire, stations orcrating with 250 hcadphonc load, 10 dB bclow clipping.

Model # Quantity Itot (milliamperes) Distance (rcct) Distance (meters)

BP300

II

BP300L

BP317

BP320

BP320L

BP325(St)

BP325SM ..(St)

SPK300

1

1

1

1

1

1

1

1 fill n

~

.Q1

~

@

1QQ

SPK300L

ill

..Surface mount version. (St) means stereo configuration.

5024

3098

5024

4131

2774

2323

3098

1859

1487

1531

944

1531

1259

846

708

944

567

453

The table below lists maximum number of stations versus User Station Type & Model Number (using a PS8 or PS15 power supply). The PS8 rated current is 430 milliamperes, the PS15 rated current js 1000 milliamperes.

Station Type

Belt Pack, Headset

Belt Pack, Headset, CalI Light

Belt Pack, Headset, Single Channel

Model

BP300

BP300L

BP317

Qty PSB Qty PS15

II

7

11

27

16

27

Belt Pack, Headset, Stereo

Belt Pack, Headset, Stereo, Call Light

BP320

BP320L

9

6

22

15

Belt Pack, Headset, Stereo, Call Light, Microprocessor BP325(St)

Belt Pack, Headset, Stereo, Call Light, Microprocessor, Surface Mount BP325(St)

Speaker, Portable .

SPK300

Speaker, Portable, Call Light **

SPK300L

5

7

4

3

11

16

10

8

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 PS15 Front Panel

Figure 3.2

Model PSIS Rear Panel

Page 7

SECTION 7: DIAGRAMS / DRA WINGS

Document

Number ~ Ii1le.

OD2368

SD6759 B

B

A

A

PSIS Block Diagram

Outline Drawing, Model PS 15 Power Supply

Layout, Printed Circuit Assembly, (PCA), Model PS 15 Power Supply

Schematic Diagram. Model PS 15 Power Supply. Sheet 1 of 1

Installation Illustration -MCP Components

~

11

12

8

9

10

PSIS Block Diagram

Page 8

! I ~I~

Ii ~I

~ tIr

!

Nr::r-.

.I')

~.!-

.

1r'1""'i' r'1~ cxiE

0';;;'

~O

,..:~

~

.N.

t--O

~

.

OD2368

Outline Drawing,

Model PS15 Power Supply

U)

ID

-.J

01

N

..t

~

01

1!)

~

~

'--"

.:.:

I

<:>

W

3:

(n

"""

~

(n

~

"'

~I ffi I w z

::i f-

:)

0

(!) z

~

0::

0

~

0-

0-

:) tn

In

I

U) a-

(I:: w

3 o

0-

--1

LLJ o

O

L

Jill

N

I"...

~ a::: 1~~I~j

I 9 I ';0

I w

~I ,

.illr

N

1 '

5

" , oi ,,"""

~r--

00

OO~

.

C::j

O l

~

Vi z o

Vi z

4)

~

O

-J

-J

«

E

E

'--'

(/)

4)

I u

~

Page 9

Layout, Printed Circuit

Assembly, Model PSIS

Power Supply

Page 10

~ rMPEDANCE SELECT

(REAR PANEL)

0'4

'N523'e

5.'V

0'5

'N523'B

5.'V

5

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.

G FOR 1OOVAC

INSTALL W1.W2 AND WS.

USE TRANSFORMER (11SVX2.1SVX2.24VA)

FOR 117VAC OPERATION:

INSTALL W1.W2.W4 AND W6.

USE TRANSFORMER (11SVX2.28VX2.24VA)

FOR 234VAC OPERATION:

INSTALL W3.W4 AND W6.

USE TRANSFORMER (11SVX2.28VX2.24VA)

RTSlf23O1-OO27-OO.

RTSII23O1-OO26-OO.

RTSlf23O1-OO26-OO.

~ THERMAL

LOCATED

BREAKER 95 DEGREES CELS~US

BETWEEN T1 AND T2.

OPEN~NG TEMPERATURE

2. CAPACrTANCE VALUES SHOWN: MrCROFARADS/VOLTS.

,. ALL RESrSTORS ARE rN OHMS. ,/4- WATT. CARBON FrLM. +-5~.

NOTES: UNLESS OTHERWISE SPECIFIED Page 11

NOT USED: 013

LAST USED: 017 .D2O.F"1.J1.P3.R27 .52. T2. TP7 .W7.U1.DS1

I CONTRACT No.1

IRTS iD'.own

I R.NErLsoN

c:necked

SYSTEMS Bu'.bank.

---

Callfa'.nla

SCHEMATrC DrAGRAM. TW POWER SUPPLY.

MODEL PS15

J:ssued

SIZE DWG NO

-..,-,1

~

U

1 Ii

D PS15

~

U

III

PS15

[';I

~

110

PS15

II

[

I

D

I n II

J

WITH MCP8

PS15

II

1;] o SINGLE MOUNT

0 WITH MCP2

[

I I n

PS15

II

I I n II

])

o DUAL MOUNT o WITH MCP1

PS15

=

II

=

I fffffi(f).

(f) .O 0 o 011

MRT327

]] o DUAL o WITH MCP 1

AND MRT327

I a!E~.~.0.@II'

(() .: ..0.

~

MCE325

@ D o DUAL o WITH MCP 1

AND MCE325

Installation Illustration'---MCP Components

Page 12