Tektronix TM 503 User manual

INSTRUCTION
MI ANIUOAL
Serial Number
Tektronix, Inc. -@ P.O. Box 500 -@ Beaverton, Oregon 97005 -@ Phone: [phone] -@ Cables: Tektronix
070-1305-00 572

e Warranted against
rkmanship for one year. Any =
and price change privileges reserved.
Copyright © 1972 by Tektronix, Inc:, Beaverton; Oregon.
Printed: in the United States of America: Alt-rights reserved.
Contents of this publication may. not be reproduced in any
form without permission of Tektronix, Inc.

TM 503
TABLE OF CONTENTS
Page
INSTALLATION PROCEDURE 1
OPERATING INSTRUCTIONS 4,
POWERING UP 4
BUILDING A SYSTEM 6
SPECIFICATIONS 7
SYSTEM MAINTENANCE 8
GENERAL 8
TROUBLESHOOTING AIDS 9
TROUBLESHOOTING TECHNIQUES 9
PARTS
ORDERING
AND
REPLACEMENT
1
OPTION INFORMATION 15
SERVICE INFORMATION 18
INTERFACE PIN ASSIGNMENTS 19
DETAILED BLOCK DIAGRAM 19
PARTS LOCATION GRID 20
ELECTRICAL PARTS LIST 21
POWER SUPPLY >
MECHANICAL PARTS LIST 24
EXPLODED VIEW DRAWING
REV. C, MAY, 1976 i

TM 503
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.
-.-g0 to Operating Instructions...
2. if a change is needed, follow these steps:
a. Line Selector Block(s)
Remove the five 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.
In-service
@ athe instrument can be
ig damaged by using the
4120 V Line Sefector block
with a 220 V nominal tine
oltage.
1 REV. JULY 1974 ®

b. Line Range Taps
TM 503
Universal Transformer (SN BO50000 - up)
Line
Selector
Block
Position
120-Volts Nominat
Regulating Ranges
220-V olts Nominal
90 VAC to 110 VAC
180 VAC to 220 VAC
99 VAC to 121 VAC
198 VAC to 242 VAC
108 VAC to 132 VAC 216 VAC to 264 VAC
Line Fuse
Data
1.6 A slow-biow
0.8 A slow-blow
Standard Transformer (SN BO50000 - below)
CAUTION. BRRELROUS URE PUTERTIALS,
ARE PRESENT GH SHS ROARS.
Line Selector
Block Position
Regulating Ranges
L Do not use
Internally Disconnected
M(i10V
H (120 V Nominal)
c. Rear Panel
220 Volts
& & slow-blow
ae
ete
\/
Line Fuses
420 Volts
1.6 A slow-blow
3. Replace the cabinet,
Nominal)
99 VAC to 121 VAC
408 VAC to 132 VAC
4.
{f
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.
REV. 0, SEPT. 1974
..go
to
Operating
Instructions...

£1306-01
TM 503 Power Module with plug-ins.
3
REV
8,
JUN
1978

TM 503
OPERATING
INSTRUCTIONS
INTRODUCTION
Description
The TEKTRONIX TM 503 Power Module is a three-
compartment-wide mainframe for the TM 500 Series of
Modular instrumentation, It accepts up to three independ-
ently functional plug-in modules to form a compact,
versatile and low cost instrumentation system. The TM 503
is a basic 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 compartments.
Power Source
This
instrument
is
designed
to
operate
from
a
power
source
with
its
neutral
at
or
near
earth
(ground)
potential
with
a
separate
safety-earth
conductor.
It
is
not
intended
for
operation
from
two
phases
of
a
multi-phase
system,
or
across
the
legs
of
a
single-phase,
three-wire
system.
Power Usage
With three plug-in modules installed, the TM 503 can
require up to 120 W of power at the upper limits of the
high fine voltage ranges. Actual power consumption
depends on the particular module combination and
operating mode selected at any one time.
Operating Temperatures
The TM 503 can be operated in an ambient air
temperature of O°C to +60°C. Thermal cutout devices
protect the system by disconnecting the power to the TM
503 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
a safe level.
Since the TM 503 can be stored in temperatures between
—40°C and +75°C, allow the instrument'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.
CAUTION
re PPPS
LARA)
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
interconnecting jack to insure that their locations match
the slots in the edge of the plug-in module’s circuit board.
REV. B, JAN. 1975
2. Align the plug-in 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.)
3, Pull the PWR button on the left side of the TM 503.
Some plug-in modules have independent power switches,
usually labeled OUTPUT, controlling application of main-
frame power to the module itself. Push this button to
activate the plug-in module.
Loading Considerations
With three plug-in modules installed, the TM 503 can
require
up
to
120
W
of
power
from
the
fine
at
high-line

Operating Instructions—TM 503
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 joads, and the resulting power distributions.
Optimum conditions would be (1} equal loads in all three
compartments, {2} as much power as possible dissipated in
external loads, and (3) operating in an ambient temperature
around +25°C.
The TM 503 provides each plug-in module with access to
a pair 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 in the modules themselves.

Operating Instructions—TM 503
BUILDING A SYSTEM
Family Compatibility
Mechanically, the plug-in modules are very similar to
other TEKTRONIX product families. However, they are
not electrically compatible. Therefore, the TM 503 inter-
face has barriers on the mating connectors between pins 6
and 7 to insure that incompatible plug-ins cannot be
inserted. See Figure 1. A compatible module will have a
matching slot between pins 6 and 7 of its main circuit
board edge connector. This slot and barrier combination is
the primary keying assignment.
Another
modules
identifier for TM 500-compatible plug-in
is the white color of the release latch.
Customizing the Interface
The modularity of this instrumentation system provides
for a host of 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
SIGNAL SOURCE
FAMILY KEY
MEASUREMENT
FAMILY KEY
members, For instance, some classes are Power Supplies,
Signal Sources, Measurement and so forth. Each modular
member of a functional family will have a second slot
peculiar to its family assignment located in its edge
connector. The TM 503 user can “program” one or more
compartments to accept only members of that family by
installing a second barrier in the interface connector to
match the module's stot location. Entire TM 503’s could be
“programmed” in this manner to set up instrumentation
systems for specific work functions. For extra barriers
order TEKTRONIX Part Number 214-1593-02.
a
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 catalog Option 2. Refer to each plug-in
module’s Manual for the 1/O assignments of each pin at the
rear interface. Once having made interconnections of a
specialized nature, it is recommended that barriers be
installed on the interconnecting jacks to insure module
compatibility with the customized wiring.
POWER SUPPLY
FAMILY KEY
TM 500
FAMILY KEYING
1B
Figure 1. Keying assignments for family functions, One of many possible sequence combinations,

Operating Instructions-TM 503
Rear Panei
The rear sub-panel is punched for BNC and multi-pin
connector mountings, Customer- or factory-installed
connectors and wiring {see following description of catalog
Option 2} could provide external access to the interface for
external I/O control. This feature makes the TM 500 Series
Modular Instrumentation System very flexible in bench-top
or rackmounted systems.
Option 2. This factory-installed option adds 25-mil
squarepin connectors to the rear of the interconnecting
jacks at all pin locations from pins 14A and B through pins
28A.and B. This will keep the interface flexible by making
it easy and fast to change customized wiring using prepared
wires with squarepin receptacles and long-nose pliers or
tweezers. {t also protects the circuit board from damage by
repeated soldering and unsoldering of jumper wires, This
option also adds three BNC connectors and one 50-pin
connector to the rear panel. These connectors are not
pre-wired in order to give a system designer as much
flexibility as possible. Instead, prepared jumpers, coax
cables, and interconnection jack barriers are included in a
kit.
Stacking and Rackmounting
TM 503‘s with their cabinets and feet in place may be
stacked on top of each other. The feet provide clearance for
the lower unit’s handle and at the same time give adequate
spacing for the necessary ventilation,
The TM 503 is designed to be half-rack width. Field
conversion kits with slide-out tracks are available to mount
one or two TM 503’s in a standard 19-inch rack, Vertical
space
needed
is
5
1/4
inches.
i
For the necessary hardware and instructions to mount
two TM 503’s side-by-side with slide-out assemblies, order
TEKTRONIX Part Number 040-0616-01.
To mount a single TM 503 with a half-rack assembly and
slide-out tracks, order TEKTRONIX Part Number
040-6617-01.
To convert from a rackmount to a bench configuration
for a single TM 503, order TEKTRONIX Part Number
040-0618-01.
SPECIFICATIONS
Power Requirements
Line Voltage Ranges. Universal Transformer: 100, 110,
120, 200, 220, 240 VAC, all within 10%. Range changing
for
transformer
accomplished
with
quick-change
line-
selector block.
Line Frequency Ranges. Universal Transformer: 48 Hz
to 440 Hz.
Power Consumption. Maximum primary power approxi-
mately 120 W at high line. Actual power consumption
depends on plug-in selection and operating modes.
Power Cord Conductor Identification
Conductor Color Alternate Color
Ungrounded {Line} Brown Black
Grounded (Neutral) Blue White
Grounding (Earthing) | Green-Yellow Green-Yellow
Supplies (Unregulated)
Two 25 VAC windings, 500 mA each, supplied to each
compartment, independently. 719 Jo, f5 ip SB/L
+33.5 V and —33.5 V, 1 A maximum each supply, shared | |
by all compartments. 2374900 34.7
47.5 VAC and +11.5 V, 3.6 A maximum, shared in any
combination between these two supplies and shared among
all compartments.
se dé Bleu 2 3el*
jesse 4 Fox FO Io NOTE gst
Current and voltage ratings are for main frame
maintenance only. in practice, not all available power
may be used at once, More detailed information is
supplied with kit 040-0652-02 (TM 500-plug-in}.
Temperature Range
Operating: O°C to +50°C. Nonoperating: ~—40°C to
+75°C,
Altitude Range
Operating: To 15,000 feet. Nonoperating: To 50,000
feet.
Other
Dimensions with Feet and Bail:
16.3 in.
H 6.0 in., W 8.7 in, L
Weight without Plug-ins: Approximately 9.5 Ib.
7
REV. F. JAN. 1977