Tektronix 5103N User manual

INSTRUCTION
MANUAL
S103N
OSCILLOSCOPE
SYSTEM
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Tektronix ,Inc. •P. O. Box 500 •Beaverton, Oregon 97005 •Phone [phone] •Cables: Tektronix
070-1143-00 471

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Copyright ©1971 by Tektronix, Inc., Beaverton,
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 the
copyright owner.
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U.S.A. and foreign Tektronix products covered
by U.S. and foreign patents and/or patents pending.

5103N
TABLE OF CONTENTS
SECTION 1SPECIFICATION
Introduction
Instrument Options
Table 1-1 Electrical Characteristics
Table 1-2 Environmental Characteristics
Table 1-3 Mainframe Physical Data
Page
1-1
1-1
1-1
1-2
1-3
SECTION 2OPERATING INSTRUCTIONS
General 2-1
Preliminary Information 2-1
Rackmounting 2-1
Operating Voltage 2-1
Operating Temperature 2-2
Plug-In Units 2-2
Installation 2-3
Selection 2-3
General Operating Information 2-3
Display Switching Logic 2-3
Vertical Display Mode 2-4
X-Y Operation 2-4
Raster Display 2-4
Basic Oscilloscope Applications 2-4
General 2-4
Peak-to-Peak Voltage Measurements—AC 2-5
Instantaneous Voltage Measurements—DC 2-5
Comparison Measurements 2-6
Time Period Measurement 2-7
Determining Frequency 2-8
Risetime Measurements 2-9
Multi-Trace Phase Difference Measurement 2-10
X-Y Phase Measurements 2-11
SECTION 3CIRCUIT DESCRIPTION
Page
Replacement Parts 4-5
Standard Parts 4-5
Special Parts 4-5
Ordering Parts 4-5
Component Replacement 4-5
General 4-5
Circuit Board Replacement 4-5
Transistor and Integrated Circuit
Replacement 4-6
Interconnecting Pin Replacement 4-6
Switch Replacement 4-6
Cathode-Ray Tube Replacement 4-7
Neon Bulb Replacement 4-8
Power Transformer Replacement 4-8
Fuse Replacement 4-8
Recalibration After Repair 4-8
SECTION 5CALIBRATION
Introduction 5-1
Services Available 5-1
Equipment Required 5-1
Preliminary Procedure 5-1
Procedure 5-2
SECTION 6RACKMOUNTING
Introduction 6-1
Instrument Conversion 6-1
Mounting Method 6-1
Rack Dimensions 6-1
Installing the Slide-Out Tracks 6-1
R5100 Installation and Adjustment 6-4
Maintenance 6-4
Block Diagram Description 3-1
Interface 3-1
Clock Generator 3-1
Countdown Circuit 3-1
Auxiliary Boards 3-2
Vertical Amplifier 3-2
Horizontal Amplifier 3-2
Power Supply 3-2
Power Input 3-2
Low-Voltage Rectifiers and Unregulated
Outputs 3-2
Line Trigger 3-3
CRT Heater Windings 3-3
Calibrator 3-3
SECTION 7ELECTRICAL PARTS LIST
Abbreviations and Symbols
Parts Ordering Information
Index of Electrical Parts List
Electrical Parts List
SECTION 8DIAGRAMS and CIRCUIT BOARD
ILLUSTRATIONS
Symbols and Reference Designators
Schematic Diagrams and Component Board
Locations
SECTION 9MECHANICAL PARTS LIST
SECTION 4SYSTEM MAINTENANCE
5100 Panel Removal 4-1
Preventive Maintenance 4-1
General 3-1
Cleaning 4-1
Calibration 4-1
Troubleshooting 4-1
General 4-1
Troubleshooting Aids 4-1
Troubleshooting Equipment 4-3
Troubleshooting Techniques 4-3
Mechanical Parts List
Mechanical Parts List Illustration
Accessories
Repackaging
CHANGE INFORMATION
Abbreviations and symbols used in this manual are based on or
taken directly from IEEE Standard 260 "Standard Symbols for
Units", MIL-STD-12B and other standards of the electronics
industry. Change information, if any, is located at the rear of this
manual.

SECTION 1
SPECIF1CATION
5103N
Change information, if any, affecting this section will be found at the rear of the manual.
Introduction ,NOTE
The 5103N Power Supply/Amplifier module is an inter-
connection unit for the display module and plug-in units. It
is operated with adisplay module, and comprises one-half
of the 5100-series oscilloscope mainframe. It accepts up to
three plug-in units and provides pre-amplification for the
deflection signals. The center and left plug-in compartments
are connected to the vertical deflection system, and the
right plug-in compartment is connected to the horizontal
deflection system. Electronic switching between the left
and center plug-ins allow amulti-trace vertical display
(chopped and alternate time-sharing modes). The unit also
contains regulated DC-voltage supplies to provide power to
the instrument system.
The following electrical characteristics apply over an
ambient temperature range of 0°C to +50°C.
Many of the measurement capabilities of the 5100-
Series Oscilloscope are determined by the choice of
display modules and plug-in units. The following
electrical characteristics apply to the Power Supply/
Amplifier unit only, unless noted otherwise. For
display modules or plug-ins only, see the specification
section of the manual for that unit.
INSTRUMENT OPTIONS
Option 1
An export transformer is available for the 5100-series
oscilloscopes, and can be installed as part of the instrument
when ordered, or it can be installed at alater time. This
transformer permits operation from 100-volt, 110-volt,
120-volt, 200-volt, 220-volt, and 240-volt sources with
power-line frequencies of from 50 to 60 hertz and 400
hertz. For further information on option 1, see your Tek-
tronix, Inc., catalog, or contact your local Tektronix Field
Office or representative.
TABLE 1-1
ELECTRICAL CHARACTERISTICS
Characteristic Performance Requirement Supplemental Information
Vertical and Horizontal Amplifiers
Input Signal Amplitude
(Differential Input)
50 millivolts per displayed division, ver-
tical and horizontal.
Horizontal Centering 0.5 division or less.
Bandwidth DC to at least 2.5 megahertz.
X-Y Phase Difference (Checked
with two plug-ins of the
same type)
1° or less to 100 kilohertz.
Sensitivity Change Accuracy degrades by up to 1% when
operated in split-screen storage.
1-1

Specification—5103N
TABLE 1-1 (cont)
Characteristic Performance Requirement Supplemental Information
Channel Switching
Chop Clock Frequency About 200 kilohertz.
Channel Chop Rate About 100 kilohertz.
Plug-In Chop Rate About 50 kilohertz.
Alternate Frequency Sweep rate (once each sweep).
Plug-In Alternate Rate
•
One-half sweep rate (once every two
sweeps).
Channel Alternate Rate One-fourth sweep rate (once every four
sweeps).
TABLE 1-2
ENVIRONMENTAL CHARACTERISTICS
Characteristic Performance
Temperature
Operating Range 0°C to +50° C.
Non-operating Range -40° Cto +70°C.
Altitude
Operating Range To 15,000 feet.
Non-operating Range To 50,000 feet.
Vibration Range To0.01 5inch peak-to-peak displacement at 50 cycles per second.
Shock Range To 30 g's, 1/2 sine, 11milliseconds duration.

Specification —5103N
TABLE 1-3
MAINFRAME PHYSICAL DATA
(5103N with aDisplay Unit)
Characteristic 5100-Series Oscilloscope R51 00-Series Oscilloscope
Dimensions (maximum)
Height (overall) 11.6 in. (29.5 cm) 5.2 in. (13.2 cm)
(cabinet) 10.5 in. (26.7 cm)
Length (overall) 19.9 in. (50.5 cm) 20.0 in. (51.0 cm)
(cabinet) 18.3 in. (46.5 cm) 18.3 in. (46.5 cm)
Width (overall) 8.4 in. (21.4 cm) 19.0 in. (48.3 cm)
(cabinet) 16.8 in. (42.7 cm)
Net Weight «22.8 lbs. (10.3 kg) ^23.5 lbs. (10.7 kg)
Shipping Weight «30.0 lbs. (13.6 kg) «39.0 lbs. (17.7 kg)
Export Weight ^45.0 lbs. (20.4 kg) ^59.0 lbs. (26.8 kg)
1-3

NOTES

5103N
SECTION 2
OPERATING INSTRUCTIONS
Change information, if any, affecting this section will be found at the rear of this manual.
General
To effectively use the 5103N, the operation and capa-
bilities of the instrument must be known. The 5103N
Power Supply/Amplifier module forms the basis of an oscil-
loscope system, and requires adisplay module and plug-ins
to complete the system. This section describes inter-
connection and general operation of the units, including
preliminary information for first-time turn-on, selection
and installation of plug-ins, general operating information,
and some basic oscilloscope applications.
Detailed operating information for aspecific display
module or plug-in is given in the instruction manual for that
unit.
PRELIMINARY INFORMATION
Rackmounting
The 5103N Power Supply/Amplifier module and the dis-
play module can be fastened together stacked or side by
side, permitting operation as abench oscilloscope, or it can
be operated in astandard 19-inch rack. Complete instruc-
tions for rackmounting are given in Section 6, Rack-
mounting.
NOTE
Before attempting to operate the instrument, make
sure the module wiring interconnections are correct,
and if display modules have been changed, that the
correct auxiliary board is installed in the socket on
the plug-in interface board.
Operating Voltage
This instrument is designed for operation from a
power source with its neutral at or near earth
(ground) potential with aseparate safety-earth con-
ductor. It is not intended for operation from two
phases of amulti-phase system, or across the legs of a
single-phase, three-wire system.
The 5100-Series Oscilloscope is operated from a115-volt
nominal line voltage source (NOTE: for instrumentshaving
optional export transformer, see information following
Table 2-1 ). The power transformer is wired to permit either
of two regulating ranges to be selected. The range for which
the primary taps are set is marked on the rear panel of the
instrument. Use the following procedure to change regu-
lating ranges:
1.Disconnect the instrument from the power source.
2. Remove the bottom dust cover of the instrument to
gain access to the Power Supply circuit board
.
3. Remove the brown line-selector block from the
square-pin connectors (see Fig. 2-1) and place it on the
desired set of pins (use pins marked Hor Monly). Select a
range which is centered about the average line voltage to
which the instrument is to be connected (see Table 2-1 ).
4. Change the nominal line voltage information on the
rear panel of the instrument. Use anon-abrasive eraser to
remove previous data, and mark in new data with apencil.
5. Replace the bottom dust cover and apply power to
the instrument.
TABLE 2-1
Regulating Ranges
Line Selector
Block Position Regulating Ranges
LDo not use Internally disconnected
M(110 VNominal) 99 VAC to 121 VAC
H(120 VNominal) 108 VAC to 132 VAC
Optional Export Transformer. An optional export trans-
former permits the 5100-Series Oscilloscope to be operated
from either a115-volt or a230-volt nominal line voltage
source. This transformer is wired to permit one of three
regulating ranges to be selected for either 115-volt or
230-volt nominal operation. The range for which the
2-1

Operating Instructions—5103N
Fig. 2-1. Location of the line-selector block on the Power Supply
circuit board.
primary taps are set is marked on the rear panel of the
instrument. Use the following procedure to obtain correct
instrument operation from the line voltage available:
5. Change the nominal line voltage information on the
rear panel of the instrument. Use anon-abrasive eraser to
remove the previous data, and mark in new data with a
pencil.
6. Replace the bottom dust cover and apply power to
the instrument.
Damage to the instrument may result from incorrect
placement of the line-selector block.
TABLE 2-2
Regulating Ranges For Export Transformer
Line
Selector
Block
Position
Regulatir
115-Volts Nominal
lg Range
230-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 1.6 Aslow -blow 1Aslow-blow
1.Disconnect the instrument from the power source.
2. Remove the bottom dust cover of the instrument to
gain access to the Power Supply circuit board.
3. To convert from 115 volts to 230 volts nominal line
voltage, or vice versa, remove the line-selector block from
the square-pin connectors (see Fig. 2-1) and replace it with
the other block. Remove the line fuse from the fuse holder
located on the rear panel of the display module and replace
it with one having the correct rating. The unused line-
selector block and line fuse can be stored on the Power
Supply circuit board. Change the line-cord power plug to
match the power-source receptacle or use an adapter.
NOTE
The 115-volt block is color coded brown, and it con-
nects the transformer primary windings in parallel.
The 230-volt block is color coded red, and it connects
the primary windings in series.
4.
To change regulating ranges, place the line-selector
block on the desired set of square pins. Select arange which
is centered about the average line voltage to which the
instrument is to be connected (see Table 2-2)
.
Operating Temperature
The 5103N can be operated where the ambient air
temperature is between 0°C and +50°C. The instrument can
be stored in ambient temperature between —40°C and
+70°C. After storage at atemperature beyond the operating
limits, allow the chassis temperature to come within the
operating limits before power is applied.
Athermal cutout in the display module provides thermal
protection and disconnects the power to the instrument if
the internal temperature exceeds asafe operating level. This
device will automatically re-apply power when the tempera-
ture returns to asafe level.
PLUG-IN UNITS
General
The 5103N is designed to accept up to three Tektronix
5-series plug-in units. This plug-in feature allows avariety of
display combinations and also allows selection of band-
width, sensitivity, display mode, etc., to meet the measure-
ment requirements. In addition, it allows the oscilloscope
system to be expanded to meet future measurement
requirements. The overall capabilities of the resultant
system are in large part determined by the characteristics of
the plug-ins selected.
2-2