Tektronix TM 5003 User manual

Tektronix
COMMITTED TO EXCELLENCE
PLEASE CHECK FOR CHANGE INFORMATION
AT THE REAR OF THIS MANUAL.
TM 5003
PO ER MODULE
INSTRUCTION MANUAL
Tektronix, Inc.
P.O. Box 500
Beaverton, Oregon
97077
Serial Number
070-2955-00
First Printing AN 1981
Revised SEP 1981

C opyright © 1981 Tektronix, Inc. All rights reserved.
Contents of this publication may not be reproduced in
any form withou t the w r itte n pe r mission of Tektronix, Inc
P roducts of Te k tronix , Inc and its subsidiaries are
cov ered by U.S. and foreign patents and/or pending patents.
TEKTRONIX,
TEK, SCOP E- MOBILE, an d
are Tr ademarks of T ektronix, Inc. TELEQUIPMENT is
a registe r ed t rademark of Tektronix U.K. Limited.
Printed in U.S.A. Specification and price change
privileges are reserved.

TABLE OF CONTENTS
Page Page
LIST OF ILLUSTRATIONS ii
LIST OF TABLES
OPERATORS ’ S SAFETY SUMMARY ...................... iv
SERVICE SAFETY SUMMARY
v
Section 1 SPECIFICATION
Instrument Description .............................. 1-1
Performance Conditions ......................... 1-1
Electrical Characteristics ....................... 1-1
Environmental Characteristics ................. 1-4
Physical Characteristics .......................... 1-5
Section 4 CALIBRATION
Performance Check Procedure ............... 4-1
Introduction ........................................... 4-1
Test Equipment Required ................... 4-1
Test Loads for the Performance
Check Procedure ................................ 4-1
Performance Check Summary Sheet . 4-4
Internal Adjustment Procedure ................. 4-5
Introduction .......................................... 4-5
Services Available .............................. 4-5
Test Equipment Required ................... 4-5
Adjustment Access .............................. 4-5
Power Limit Adjustment ..................... 4-5
Section 5 MAINTENANCE
Section 2 OPERATING INSTRUCTIONS
Introduction ............................................... 2-1
Power Source Requirements ................... 2-1
Fuse Replacement .................................... 2-1
Table Top Use ........................................... 2-1
Plug-in Installation and Removal ............. 2-1
Family Compatibility ................................ 2-2
Customizing the Interface ....................... 2-2
Rear Panel ................................................. 2-2
Option 02 ................................................... 2-2
Repackaging information ......................... 2-2
Stacking and Rackmounting ................... 2-4
Preparation for Use ............................ 5-1
Static Sensitive Components ............. 5-1
Cleaning ............................................... 5-2
Obtaining Replacement Parts ............. 5-2
Soldering Techniques .......................... 5-3
Semiconductors .................................. 5-3
Multipin Connectors ............................ 5-3
Instrument Disassembly ..................... 5-3
Circuit Troubleshooting ....................... 5-6
Rear Interface Information ....................... 5-7
PWR Indicator ...................................... 5-7
Pin Assignments .................................. 5-7
Section 6 OPTIONS
Introduction Option 02 ....................... 6-1
System Design Directions ................... 6-1
Wire Use ............................................... 6-1
The following servicing instructions are for use by
qualified personnel only. To avoid personal injury, do
not perform any servicing other than that contained in
operating instructions unless you are qualified to do
so.
Section 3 THEORY OF OPERATION
Introduction ............................................... 3-1
Line Selector and 60 Hz Transformer ... 3-1
Rectifiers and Filters ................................ 3-1
20 kHz Output Stage ................................ 3-1
Control Logic and Drivers ....................... 3-1
Output Regulator ....................................... 3-3
Overvoltage and Overcurrent Detectors . 3-4
Control Circuit Regulator .......................... 3-4
Main Interface ........................................... 3-5
Section 7 REPLACEABLE ELECTRICAL PARTS
Section 8 DIAGRAMS AND CIRCUIT BOARD
ILLUSTRATIONS
Component Reference Charts
Schematic Diagrams
Section 9 REPLACEABLE MECHANICAL PARTS
Fig. 1 Exploded View
Accessories
CHANGE INFORMATION
CAUTION

LIST OF ILLUSTRATIONS
Fig.
No. Page
2-1 TM 5003 rear panel ....................................... 2-2
2-2 TM 5003 bottom view ................................... 2-3
2-3 TM 5003 front view ....................................... 2-4
2-4 Plug-in installation and removal .................... 2-5
2- 5 Keying assignments for family functions.
One of the many possible sequence
combinations ................................................. 2-5
3- 1 Various waveforms and time relationships
for power on, off, fault and low line ............. 3-2
3- 2 Input line connections for 110 V and
220 V operation ............................................. 3-3
4- 1 Possible loads for use in performance
check procedure. See text .......................... 4-1
4- 2 Test setup for performance check steps
1, 2 and 3 and location of connections
for adjustment step 1 .................................. 4-3
4- 3 Location of voltage buses and adjustments 4-5
5- 1 Line cord options for the TM 5003 ............. 5-1
5-2 Line voltage jumper positions ...................... 5-2
5-3 Orientation and disassembly of multipin
connector ....................................................... 5-3
5-4 Rear view of TM 5003 ................................... 5-4
5-5 Guide rail and air baffle removal ......... 5-4
5-6 Removal of interface circuit board support. 5-4
5-7 Removal of d c power supply primary board 5-4
5-8 Partial d c power supply primary board
removal .......................................................... 5-5
5-9 Secondary board and partial primary
transformer removal ...................................... 5-5
5-10 Location of PNP series pass transistors
and partial transformer removal ................. 5-5
5-11 NPN Series Pass Transistors ...................... 5-5
5-12 PWR signal timing diagram .......................... 5-7
5-13 Rear interface connector asignments ......... 5-8
5-14 Rear panel GPIB connector 1 110 viewed
from rear of power module (IEEE Standard
No. 488) .......................................................... 5-9
8-1 De power supply, primary, secondary and
line filter boards
8-2 De power supply regulator waveforms
8-3 Main interface board (A10)
8-4 GPIB interconnect board (back side)

TM 5003
LIST OF TABLES
Table
No. Page
1-1
1-2
1-3
4- 1
5- 1
Electrical Characteristics ............................ 1-1
Environmental Characteristics ..................... 1-4
Physical Characteristics .............................. 1-5
Suggested Test Equipment ......................... 4-2
Relative Susceptibility to Static Discharge
Damage .......................................................... 5-2
8-1 Partial A1 1, A13 and A14 Component
Reference Chart
8-2
8-3
Partial A1 1 Component Reference Chart
A10 Component Reference Chart

TM 5003
OPERATORS SAFETY SUMMARY
The general safety information in this part of the summary is
for both operating and servicing personnel. Specific
warnings and cautions will be found throughout the manual
where they apply, but may not appear in this summary.
TERMS
In This Manual
CAUTION statements identify conditions or practices that
could result in damage to the equipment or other property.
WARNING statements identify conditions or practices that
could result in personal injury or loss of life.
As Marked on Equipment
CAUTION indicates a personal injury hazard not immediate 
ly accessible as one reads the marking, or a hazard to prop 
erty including the equipment itself.
DANGER indicates a personal injury hazard immediately ac 
cessible as one reads the marking.
SYMBOLS
In This Manual
This symbol indicates where applicable cau 
tionary or other information is to be found.
As Marked on Equipment
DANGER — High voltage.
Protective ground (earth) terminal.
ATTENTION — refer to manual.
Power Source
This product is intended to operate from a power source
that will not apply more than 250 volts rms between the
supply conductors or between either supply conductor and
ground. A protective ground connection by way of the
grounding conductor in the power cord is essential for safe
operation.
Grounding the Product
This product is grounded through the grounding conductor
of the power module power cord. To avoid electrical shock,
plug the power cord into a properly wired receptacle before
connecting to the product input or output terminals. A pro 
tective ground connection by way of the grounding conduc 
tor in the power module power cord is essential for safe
operation.
Danger Arising From Loss of Ground
Upon loss of the protective-ground connection, all accessi 
ble conductive parts (including knobs and controls that may
appear to be insulating) can render an electric shock.
Use the Proper Fuse
To avoid fire hazard, use only the fuse of correct type, volt 
age rating and current rating as specified in the parts list for
your product.
Refer fuse replacement to qualified service personnel.
Do Not Operate in Explosive Atmospheres
To avoid explosion, do not operate this product in an explo 
sive atmosphere unless it has been specifically certified for
such operation.
Do Not Operate ithout Covers
To avoid personal injury, do not remove the product covers
or panels. Do not operate the product without the covers
and panels properly installed.
iv
REV SEP 1981

SERVICE SAFETY SUMMARY
FOR QUALIFIED SERVICE PERSONNEL ONLY
Refer also to the preceding Operators Safety Summary.
Do Not Service Alone
Do not perforin internal service or adjustment of this prod 
uct unless another person capable of rendering first aid and
resuscitation is present.
Dangerous voltages may exist at several points in this prod 
uct. To avoid personal injury, do not touch exposed connec 
tions and components while power is on.
Disconnect power before removing protective panels, sol 
dering, or replacing components.
Power Source
This product is intended to operate from a power source
that will not apply more than 250 volts rms between the
supply conductors or between either supply conductor and
ground. A protective ground connection by way of the
grounding conductor in the power cord is essential for safe
operation.

TM 5003
2955-00
TM 5003 Power Module

Section 1 — TM 5003
SPECIFICATION
Instrument Description
The TM 5003 is a three compartment power module
compatible with TM 500 - 5000 series plug-ins. The power
module features a pulse width modulated switching d c pow 
er supply. All d c voltages are regulated. The unit has forced
air cooling.
Three individual connectors, one for each compartment,
provide connections to each GPIB compatible plug-in.
These connectors feed to a GPIB interface board, then to a
standard GPIB connector on the rear panel. All GPIB con 
nections are separate from the board rear interface
connector.
be in a noncondensing environment whose limits are de 
scribed under the environmental part. Allow 30 minutes
warm-up time for operation to specified accuracy; 60 min 
utes after exposure to or storage in a high humidity (con 
densing) environment. Any conditions that are unique to a
particular characteristic are expressly stated as part of that
characteristic.
The electrical and environmental performance limits, to 
gether with their related validation procedures, comprise a
complete statement of the electrical and environmental per 
formance of a calibrated instrument.
Performance Conditions
The electrical characteristics in this specification are valid
only if the TM 5003 has been adjusted at an ambient tem 
perature between + 20°C and +30°C. The instrument must
Items listed in the Performance Requirements column of
the Electrical Characteristics are verified by completing the
Performance Check in the Calibration section of this man 
ual. Items listed in the Supplemental Information column are
not verified in this manual.
Table 1-1
ELECTRICAL CHARACTERISTICS
Characteristics
Performance Requirements
Supplemental Information
Supplies
+ 26 V d c
Tolerance 3
+ 23.7 V to 28.3 V
PARD b
≤ 2.5 V peak to peak
Maximum load
1 A per compartment
Maximum load —
dt
10 mA/µS
-26 V d c
Tolerance 3
-23.7 V to -28.3 V
PARD b
≤ 2.5 V peak to peak
Maximum load
1 A per compartment
Maximum load di —
dt
10 mA/µs
1-1

Specification — TM 5003
Table 1-1 (cont)
Characteristics
Performance Requirements
Supplemental Information
+ 8 V d c
Tolerance 3
+ 7.6 V to +8.5 V
PARD b
< 600 mV peak to peak
Maximum load
3 A per compartment
Maximum load —
dt
20 mA/µS
25 V ac (2 each compartment)
Range
25.0 V rms +10%, -15%
floating
Maximum load
1 A rms per winding
Maximum floating
voltage
350 V peak from chassis
ground
17.5 V
Range
20.5 V +10%, -20% with
grounded center tap
Maximum load
350 mA per compartment
Maximum plug-in power c
draw from mainframe
30 watts d c or 50 VA ac
Combined power draw c
Sharing Limitation
VA ac + 2.67 (watts dc ) <100
Series Pass Transistors
Type
One NPN and PNP per
compartment
Maximum dissipation
10 W each, 20 W total
Maximum floating voltage
350 V peak
Source Power Requirements
Voltage Ranges
Selectable (nominal):
100 V, 110 V, 120 V, 200 V,
220 V, and 240 V. (250 V
maximum on 240 V range)
Tolerance
+ 7% - 10%
Line Frequency
48 Hz to 60 Hz
Maximum Power Consumption
300 VA
1-2

Specification — TM 5003
Table 1-1 (cont)
Characteristics
Performance Requirements Supplemental Information
Fuse Data
100 V, 110 V, 120 V
ranges
4 A, 3 AG, medium blow
200 , 220 V, 240 V
ranges
2 A, 3 AG, fast blow
Miscellaneous
Maximum recommended
plug-ln power dissipation
One-wide
15 W
Two-wide
35 W
Recommended adjustment
interval
1000 hours or 6 months
a orst case: Low line with full load and high line with no load. These limits include PARD.
b Periodic and Random Deviation. See National Electrical Manufacturers Association (NEMA) Standards Publication No. PY1-1972.
c At nominal line voltage.
1-3

Specification — TM 5003
Table 1-2
ENVIRONMENTAL CHARACTERISTICS
Characteristics
Description
Temperature
Meets MIL-T-28800B,
class 5.
Operating 9
0°C to +50°C
Non-operating
— 55°C to +75°C
Humidity 3
95% RH, 0°C to 30°C
75% RH, to 40°C
45% RH, to 50°C
Exceeds MIL-T-28800B,
class 5.
Altitude
Exceeds MIL-T-28800B,
class 5.
Operating 9 4.6 Km (15,000 ft)
Non-operating
15 Km (50,000 ft)
Vibration 0 0.38 mm (0.015")
peak to peak, 5 Hz to
55 Hz, 75 minutes.
Meets MIL-T-28800B,
class 5.
Shock 0
30 g's (1/2 sine)
11 ms duration,
3 shocks in each
direction along
3 major axes, 18
total shocks.
Meets MIL-T-28800B,
class 5,
Bench Handling 0
12 drops from 45°
4" or equilibrium,which 
ever occurs first.
Meets MIL-T-28800B,
class 5.
Transportation 01
Qualified under National Safe Transit Association Preshipment
Test Procedures 1A-B-1 and 1A-B-2.
EMC
Within limits of MIL-461A tests RE02, CE01, CE03, RS01,
CS01, CS02 and VDE 0871.
Electrical Discharge
20 kV maximum charge applied to instrument case.
"Electrical load in accordance with Section 2.2.1.
b System environmental specifications subject to individual plug-in specifications.
c Tested with mechanical load of 9.5 lbs. ±1/2 lb. evenly distributed. (A three-wide plug-in with three rear support pins and two rear
interface ECB ’ s.) Requires retainer clips.
d ithout mechanical load (plug-ins).
1-4
REV SEP 1981

Specification — TM 5003
Table 1-3
PHYSICAL CHARACTERISTICS
Characteristics
Description
Maximum recommended plug-in
weight
One wide
3 lbs (1.4 kg)
Two wide
6 lbs (2.7 kg)
Net weight (without plug-ins)
19 lbs (8.6 kg)
Maximum overall dimensions
Height
Width
Length
193.8 mm (7.63 inches)
229.84 mm (9.049 inches)
476 mm (18.74 inches)
Enclosure type and style per
MIL-T-28800B
Type
Style
iii
E (with 040 rackmount kit style F)
Finish
Frame
Covers
Powder coated aluminum
Vinyl clad aluminum
1-5

Section 2 — TM 5003
OPERATING INSTRUCTIONS
Introduction
The TM 5003 Power Module is calibrated and ready for
use when received. A list of standard accessories (and part
numbers) is located in the back of this manual.
To ensure proper cooling, do not operate the power
module with any cover removed.
Power Source Requirements
WARNING
AC Power Source and Connection. This instrument
operates from a single-phase power source. It has a
three-wire power cord and two-pole, three-terminal
grounding type plug. The voltage to ground (earth)
from either pole of the power source must not exceed
the maximum rated operating voltage, 250 volts.
Fuse Replacement
Turn the slotted section of the line fuse holder counter 
clockwise and remove the fuse. Replace the fuse with the
proper type as shown on the rear panel label.
Table Top Use
The power module may be operated with the front raised.
To raise the front of the instrument extend the front feet as
shown in Fig. 2-2.
Before making connection to the power source, deter 
mine that the instrument is adjusted to match the volt 
age of the power source, and has a suitable two-pole,
three-terminal grounding-type plug. Refer any
changes to qualified service personnel.
Grounding. This instrument is safety class I equip 
ment (SEC designation). All accessible conductive
parts are directly connected through the grounding
conductor of the power cord to the grounding contact
of the power plug.
Plug-In Installation and Removal
Turn the power module off before inserting or remov 
ing the plug-in; otherwise, damage may occur to the
plug-in circuitry.
The power input plug must only be inserted in a mat 
ing receptacle with a grounding contact. Do not defeat
the grounding connection. Any interruption of the
grounding connection can create an electric shock
hazard.
For electric shock protection, the grounding connec 
tion must be made before making connection to the
instrument ’ s input or output terminals.
See Fig. 2-1. Refer to the line voltage and fuse data label
on the rear panel.
NOTE
The DC 505, DC 505A and LA 501 W plug-ins are not
compatible with this power module.
Check to see that the plastic barriers on the
interconnecting jack of the selected power module compart 
ment match the cutouts in the plug-in circuit board edge
connector. Align the plug-in chassis with the upper and low 
er guides (see Fig. 2-3 and 2-4) of the selected compart 
ment. Push the plug-in chassis in and press firmly to seat
the circuit board edge connector in the interconnecting jack.
Turn the power module on.
2-1
CAUTION
CAUTION

Operating Instructions — TM 5003
Rear interface
connector
(Option 02 only)
Line fuse holder
Rear interface
bnc connectors
(Option 02 only)
IEEE-488
(GPIB) connector
Power cord
receptacle
2955*01
Fig. 2-1. TM 5003 rear panel.
Family Compatibility
Mechanically, TM 500 - 5000 plug-in modules are very
similar to other Tektronix product families. However, they
are not electrically compatible. Therefore, the TM 5003 in 
terface has barriers on the mating connectors between pins
6 and 7 to ensure that incompatible plug-ins cannot be in 
serted. See Fig. 2-5. 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 pri 
mary keying assignment.
TM 500-5000 compatible plug-in modules are also identi 
fied 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 mem 
bers. For instance, some classes are Power Supplies, Sig 
nal Sources, Measurement, and so forth. Each module
member of a functional family will have a second slot, pecu 
liar to its family assignment, located in its edge connector.
The TM 5003 user can select 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 slot
location. An entire TM 5003 can be set up in this manner for
specific work functions. For extra barriers, order Tektronix
Part No. 214-1593-02.
Rear Panel
The rear subpanel has a connector mounting plate for
bnc and multipin connector mountings. Customer or factory-
installed connectors and wiring (Option 02) can provide
external access to the interface. This feature makes the
TM 500-5000 Series Modular Instrumentation System very
flexible in bench-top or rack mounted systems.
Option 02
Qualified service personnel see Section 6 in the Service
Section of this manual for information on Option 02.
Repackaging Information
If the Tektronix instrument is shipped to a Tektronix Ser 
vice Center for service or repair, attach a tag showing own 
er (with address) and the name of an individual at your firm
to contact. Include the complete instrument serial number
and a description of the service required.
2-2
REV SEP 1981

Operating Instructions — TM 5003
Air intakes
Push to fold against
bottom of instrument.
Carrying handle
Folded front bail
Pull to extend.
2955-02
Fig. 2-2. TM 5003 bottom view.
2-3

Operating Instructions — TM 5003
Clearance holes Plug-in chassis
ground connectors
Collapsible bail
2955-03
Fig. 2-3. TM 5003 front view.
Save and reuse the package in which your instrument
was shipped. If the original packaging is unfit for use or not
available, repackage the instrument as follows:
Surround the instrument with polyethylene sheeting to
protect the instrument finish. Obtain a carton of
corrogated cardboard of the correct carton strength
having inside dimensions of no less than six inches
more than the instrument dimensions. Cushion the in 
strument by tightly packing three inches of dunnage
or urethane foam between carton and instrument on
all sides. Seal the carton with shipping tape or an in 
dustrial stapler.
The carton test strength for this instrument is 350
pounds per square inch.
Stacking and Rackmounting
TM 5003s with their cabinets and feet in place may be
stacked on top of each other. Give adequate spacing for the
necessary ventilation.
The TM 5003 is designed to be half-rack width. Field con 
version kits with slide-out tracks are available to mount one
or two TM 5003s or a TM 5003 and other instruments, in a
standard 19-inch rack. Vertical space needed is 7 inches.
2-4

Operating Instructions — TM 5003
Fig. 2-4. Plug-in installation and removal.
Fig. 2-5. Keying assignments for family functions. One of many possible sequence combinations.
2-5