Tektronix TM 501 User manual

Serial Number
Tektronix, fnc. P.O. Box 500 Beaverton, Oregon 97005 -®- Phone: [phone] Cables: Tektronix
070 - 1 3 04-00 572

are
irelgri patents and/or pending

TIV1501
TABLE OF CONTENTS
Page
INSTALLATION PROCEDURE 1
OPERATING INSTRUCTIONS 4
POWERING UP 4
BUILDING A SYSTEM 5
SPECIFICATIONS 6
SYSTEM MAINTENANCE 7
GENERAL 7
TROUBLESHOOTING AIDS 8
TROUBLESHOOTING TECHNIQUES 8
PARTS ORDERING AND REPLACEMENT 10
SERVICE INFORMATION 14
INTERFACE PIN ASSIGNMENTS 15
DETAILED BLOCK DIAGRAM 15
PARTS LOCATION GRID 16
ELECTRICAL PARTS LIST 17
SCHEMATIC 19
MECHANICAL PARTS LIST 20
EXPLODED VIEW DRAWING
REV B. APR 1979 j

TM 501
INSTALLATION PROCEDU
efora you start...
1. Check the rear pane! markings. !f 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 a change is needed, follow these steps;
a. Line Selector Block(s)
Remove the two 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.
Jumper
Block
The instrument can be dam¬
aged by using the 120 V Line
Selector block with a 220 V
nominal line votage.
1
REV. 8, AUG. 1974

b. Line Range Taps
Standard Transformer (SN B050000 - below)
Line Selector
Block Position
Regulating Ranges
L Do not use
Internally disconnected
M (110 V Nominal) ^
99 VAC to 121 VAC
H (120 V Nominal)
108 VAC to 132 VAC
Universal Transformer (SN B050000-up)
Line
Selector
Block
Position
Regulat
120-Volts Nomina!
:ing Ranges
220-Volts Nominal
L
90 VAC to 110 VAC
180 VAC to 220 VAC
M 99 VAC to 121 VAC
198 VAC to 242 VAC
H
108 VAC to 132 VAC
216 VAC to 264 VAC
Line Fuse
Data
0.6 A slow-blow
0.3 A med-blow
c. Rear Panel
USsIfOTgKiriAil
ARC P8€S»f m T«sS
Primary taps
220 Volts
0.3 A med-blow
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. ...QO t© OpBrBtlsIQ loSti'IICtioriS...
REV. B. AUG. 1974

TM 501 Power Module with piug-m.
3

INTRODUCTION
Description
The TEKTRONIX TM 501 Power Module is a single¬
compartment wide mainframe for the TM 500 Series of
Modular Instrumentation, it is a basic power source for the
many plug-in module 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.
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
The TM 501 can require up to 35 W of power at the
upper limits of the high line voltage ranges. Actual power
consumption depends on the particular module and
operating mode selected.
Operating Temperatures
The TM 501 is designed to operate in ambient tempera¬
tures between 0°C and -t-50°C. Before operating the TM
501 after storage in temperatures within the specified
storage range, allow the chassis to return to room ambient
before applying power.
POWERING UP
Plug-in Modules
) CAUTION J
Turn the Power Module off before inserting the plug¬
in; otherwise, damage may occur to the plug-in
circuitry.
Module Installation
1. C heck 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.
2. A l i gn the plug-in module chassis with the upper and
lower guides of the 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, P u ll the POWER button on the right side of the TM
501. Some plug-in modules have independent power
switches, usually labeled OUTPUT, controlling application
of mainframe power to the module itself. Push this button
to activate the plug-in module.
Loading Considerations
The TM 501 can require up to 35 W of power from the
line at high-line voltage range settings. Actual power
consumed, of course, depends on the particular module
selected. This power capability can best be utilized by
carefully planning the external loads and the resulting
power distributions. Optimum conditions would dissipated
as much power as possible in external loads in an ambient
temperature around +25°C,
The TM 501 provides the plug-in module with access to
a pair of heat-sinked, chassis-mounted transistors, one NPN
and one PNP. These Series-Pass transistors allow plug-in
modules to operate in power ranges not possible if the
power had to be dissipated in the modules themselves.
REV. B, APR, 1975

Operating Instructions—TIVI 501
Family Compatibility
Mechanically, the plug-in modules are very similar to
other TEKTRONIX product families. However, they are
not electrically compatible. Therefore, the TM 501 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 identifier for TM 500-compatible plug-in
modules 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
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 501 user can “program" the Power
Module to accept only members of a certain family by
installing a second barrier in the interface connector to
match the module's slot location. For extra barriers, order
TEKTRONIX Part Number 214-1543-02.
Rear Panel
The rear sub-panel is punched for BNC and multi-pir
connector mountings. Customer- or factory-installed
connectors and wiring {see following description of catalog
Option 2} could provide external access to the interface for
externa! I/O control. This feature makes the TM 500 Series
Modular Instrumentation System very flexible.
SIGNAL SOURCE
FAMILY KEY
MEASUREMENT
FAMILY KEY
TM 500
FAMILY KEYING

Operating Instructions—TM 501
Option 2. This factory-instaHed option adds 25*mil
squarepin connectors to the rear of the interconnecting jack
at at! pin locations from pins 14A and B through pins 28A
and B. This wit! keep the interface flexible by making it
easy and fast to change customized wiring using prepared
wires with squarepin receptacles and iong-nose pliers or
tweezers. It also protects the circuit board from damage by
repeated soldering and unsoldering of jumper wires. This
option also adds a BNC connector and a 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.
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
blocks.
Power Cord Conductor Identification
Conductor
Color Alternate Color
Ungrounded (Line) Brown
Black
Grounded (Neutral)
Blue
White
Grounding (Earthing)
Green-Yellow Green-Yellow
Line Frequency Ranges. Universal Transformer; 48 Hz
to 440 Hz.
Power Consumption. Maximum primary power approxi¬
mately 35 W at high line. Actual power consumption
depends on plug-in selection and operating modes.
Supplies (Unregulated)
Two 25 VAC windings, 500 mA each.
-t-33.5 V and —33.5 V, 500 mA, maximum,
17.5 VAC and +11.5 V, 1.0 A, maximum, shared in any
combination between these two supplies.
NOTE
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 040-0652-03 (TM 500-plug-in).
Temperature Range
Operating: 0*^0 to -rBO'^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: H 6.0 in., W 3.9 in., L
15.3 in.
Weight without Plug-ins; Approximately 6.0 lb.
REV F, APR 1979