Tektronix TM 504 Manual de usuario

Hektronix-

COMMITTEO TO E)CCELLENCE

POWER MODULE

TM 504

INSTRUCTION MANUAL

Tektronix, Inc.

P.O. Box 500

Beaverton, Oregon 97005

070-1716-00 First Printing JUNE 1974

WARRANTY

All TEKTRONIX instruments are warranted against

defective materials and workmanship for one year.

Any questions with respect to the warranty should

be taken up with your TEKTRONIX Field Engineer or

representative.

All requests for repairs and replacement parts

should be directed to the TEKTRONIX Field Office

or representative in your area. This will assure you

the fastest possible service. Please include the

instrument Type Number or Part Number and Serial

Number with all requests for parts or service.

Specifications and price change privileges reserved.

Oregon. Printed in the United States of America. All

rights reserved. Contents of this publication may not

be reproduced in any form without permission of

Tektronix, Inc.

U.S.A. and foreign TEKTRONIX products covered

by U.S. and foreign patents and/or patents pending.

TEKTRONIX is aregistered trademark of Tektronix,

Inc.

TM 504

TABLE OF CONTENTS

Page

INSTALLATION PROCEDURE 1

OPERATING INSTRUCTIONS 4

POWERING UP 4

BUILDING ASYSTEM 6

SPECIFICATIONS 7

SYSTEM MAINTENANCE 8

GENERAL 8

TROUBLESHOOTING AIDS 9

TROUBLESHOOTING TECHNIQUES 9

PARTS ORDERING AND REPLACING 11

SERVICE INFORMATION 15

OPTIONS 16

INTERFACE PIN ASSIGNMENTS

DETAILED BLOCK DIAGRAM

PARTS LOCATION GRID

ELECTRICAL PARTS LIST 17

SCHEMATIC

MECHANICAL PARTS LIST

EXPLODED VIEW DRAWING

CHANGE INFORMATION

®i

TM 504

INSTALLATION PROCEDURE

Before you start...

1. Check the rear panel markings. If the factory settings are compatible with the available line voltage and frequency, insert

the desired plug-ins. Use the bail to raise the front of the instrument.

...go to Operating Instructions...

2. If achange is needed, follow these steps:

a. Line Selector Block(s)

Remove the four hold-down screws on the top of the dust cover cabinet and lift the cabinet off. This gives easy access

to the Line Selector blocks located on the main circuit board.

Stored

selector block

Stored

selector block

In-service

selector block

In-service

selector block

Brown

The instrument can be

damaged by using the

120 VLine Selector block

with a220 Vnominal line

voltage.

1REV. B, MAR. 1975

TM 504

b. Line Range Taps Universal Transformer

Line

Selector

Block

Position

Regulal

120 Volts Nominal

:ing Ranges

220-Volts Nominal

L90 VAC to 110 VAC 180 VAC to 220 VAC

M99 VAC to 121 VAC 198 VAC to 242 VAC

H108 VAC to 132 VAC 216 VAC to 264 VAC

Line Fuse

Data 3A slow‘blow 1.6A slow-blow

c. Rear Panel

3. Replace the cabinet.

4. If necessary, change the line cord power plug to match the power source receptacle or use an adapter.

5. Plug the cord into the power source.

6. Insert the desired plug-ins.

7. Use the bail to raise the front of the instrument. ...go to Operating Instructions...

TM 504

OPERATING

INSTRUCTIONS

INTRODUCTION

Description

The TEKTRONIX TM-504 Power Module is amain-

frame for the TM 500 Series of Modular Instrumentation. It

accepts up to four independently functional plug-in

modules to form acompact versatile and low cost instru-

mentation system. The TM 504 is abasic power source and

provides an interconnecting scheme for the other members

of the TM 500 Series family. Factory options allow

customer modification using signal access at the plug-in

module/power module interface to provide rear panel

inputs and outputs, and interconnections between compart-

ments.

Power Source

This instrument is designed to operate from apower

source with its neutral at or near earth (ground) potential

with aseparate safety-earth conductor. It is not intended

for operation from two phases of amulti-phase system, or

across the legs of asingle phase, three-wire system.

Power Usage

With four plug-in modules installed, the TM 504 can

require up to 220 Wof power at the upper limits of the

high line voltage ranges. Actual power consumption de-

pends on the particular module combination and operating

mode selected at any one time.

NOTE

The compartment closest to the PULL ON POWER

switch is high power. Some of the TM 500 Series

plug-in modules require high power to operate at

their maximum capabilities.

Operating Temperatures

The TM 504 can be operated in an ambient air

temperature of 0°C to 50°C. Thermal cutout devices

protect the system by disconnecting the power to the TM

504 Power Module when internal temperatures rise above a

safe operating level. These devices automatically return

power to the unit when the internal temperatures return to

asafe level.

Since the TM 504 can be stored in temperatures between

—40°C and +75°C, allow the instruments's chassis to return

to within the operating limits before applying power.

POWERING UP

Plug-In Modules

It is not necessary that all the plug-in compartments be

utilized in order to operate the Power Module. The only

modules needed are those necessary to accomplish the task.

Turn the Power Module off before inserting the plug-

in; otherwise, damage may occur to the plug-in

circuitry.

Module Installation

1.Check the location of the white plastic barriers on the

TM 504 interconnecting jack to ensure that their locations

match the slots in the edge of the plug-in module's circuit

board.

2. Align the plug-module chassis with the upper and

lower guides of the selected compartment. Push the module

in and press firmly to seat the circuit board in the

interconnecting jack. (Remove the plug-in module by

pulling on the white release latch located in the lower left

corner of each module.)

REV. B, MAR. 1975 4

Operating Instructions—TM 504

3. Pull the PULL ON POWER button on the right side

of the TM 504. Some plug-in modules have independent

power switches, usually labeled OUTPUT, controlling ap-

plication of mainframe power to the module. Push this

button to activate the plug-in module.

Loading Considerations

With four plug-in modules installed, the TM 504 can

require up to 220 Wof power from the line at high-line

voltage range settings. Actual power consumed, of course,

depends on the particular module combination selected at

any one time.

This power capability can best be utilized by carefully

planning the functional combinations of plug-ins, their

external loads, and the resulting power distributions.

Optimum conditions can be (1) equal loads In all three

left hand compartments and full load in high power com-

partments, (2) as much power as possible dissipated in ex-

ternal loads, and (3) operating In an ambient temperature

of about +25°C.

The TM 504 provides each plug-in module with access to

apair of heat-sinked, chassis-mounted transistors, one NPN

and one PNP. These Series-Pass transistors allow the plug-in

modules to operate in power ranges not possible if the

power had to be dissipated within the modules.

Operating Instructions—TM 504

BUILDING ASYSTEM

Family Compatibility

Mechanically, the plug-in modules are very similar to

other Tektronix product families. However, they are not

electrically compatible. Therefore, the TM 504 interface

has barriers on the mating connectors between pins 6and 7

to ensure that incompatible modules cannot be inserted.

See Figure 1. Acompatible module will have amatching

slot between pins 6and 7of its main circuit board edge

connector. This slot and barrier combination Is the primary

keying assignment.

TM 500-compatible plug-in modules are also Identified

by the white color of the release latch.

Customizing The Interface

The modularity of this instrumentation system provides

for many different functions to be performed by the

plug-in modules. Specific functions are grouped into

families or classes, of which there may be several plug-in

module members. For instance, some classes are Power

Supplies, Signal Sources, Measurement, and so forth. Each

modular member of afunctional family will have asecond

slot peculiar to its family assignment located in its edge

connector. The TM 504 user can ''program'' one or more

compartments to accept only members of that family by

installing asecond barrier in the interface connector to

match the module's slot location. An entire TM 504 can be

"programmed" in this manner to set up instruction systems

for specific work functions. For extra barriers, order

Tektronix Part Number 214-1593-02.

Jumper wires can be used to further specialize the

interface. Compartments can be made to "talk" to each

other by connecting jumpers on the back side of the

interface board, using pins 14 through 28, A-side and B-side

both, of the interconnecting jacks. See the following

description of Option 2. Refer to each plug-in module's

Manual for the I/O assignments of each pin at the rear

Interface. Once having made interconnections of aspe-

cialized nature, it is recommended that barriers be installed

on the interconnecting jacks to ensure module com-

patibility with the customized wiring.

MEASUREMENT

|:|4^^21A

POWER SUPPLY

FAMILY KEY

HIGH POWER

COMPARTMENT

TM 500

FAMILY KEY

SIGNAL SOURCE

FAMILY KEY

Fig. 1. Keying assignments for family functions. One of many possible sequence combination.

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