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N MANUAL
Tektronix, Inc .
P .O . Box 500
Beaverton, Oregon 97077 Serial Number
070-1948-00 First Printing APR 1975
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'7A13 (SN B200000-up)
SECTION 1 SPECIFICATION Page
Introduction 1-1
Electrical Characteristics 1-1
System Characteristics 1-4
Environmental Characteristics 1-4
SECTION 2 OPERATING INSTRUCTIONS
Introduction 2-1
Front Panel Description 2-1
Test Setup Chart 2-2
Familiarization Procedure 2-2
General Operating Information 2-5
SECTION 3 CIRCUIT DESCRIPTION
Introduction 3-1
Block Diagram Description 3-1
Detailed Circuit Description 3-3
SECTION 4 MAINTENANCE
Preventive Maintenance 4-1
Troubleshooting 4-2
Corrective Maintenance 4-8
SECTION 5 PERFORMANCE CHECK/CALIBRATION
Introduction 5-1
Test Equipment Required 5-1
Short-Form Performance Check/Calibration
Procedure and Index 5-5
Performance Check/Calibration Procedure 5-8
SECTION 6 ELECTRICAL PARTS LIST
Abbreviations and Symbols
Parts Ordering Information
SECTION 7 DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS
Symbols and Reference Designators
Voltage and Waveform Conditions
SECTION 8 MECHANICAL PARTS LIST
Mechanical Parts List Information
Index of Mechanical Parts Illustrations
Mechanical Parts List
Accessories
CHANGE INFORMATION
Fig . 1-1 . 7A13 Differential Comparator .
7A13 (SN B200000-up)
Section 1---7A13 (SN B200000-up)
Introduction TABLE 1-1 (cont)
The 7A13 Vertical Plug-In is a DC coupled differential yV` ~Characteristic - Performance Requirement
comparator with excellent common-mode rejection and
medium gain characteristics for medium level
applications . The 7A13 is designed for use in Tektronix Common Mode
7000 series oscilloscopes. It may be used as a differential Signal Range
input preamplifier or conventional preamplifier in addition 1 mV/Div to At least +-10 V and -10 V
to its use as a comparator . 50 mV/Div ;
In the differential input mode, the dynamic range allows
X10 Vc In
the application of common-mode signals up to +-10 or
--10 volts to be applied to the unit without attenuation .
Common-mode rejection ratio of at least 20,000 :1 at DC to 10 mV/Div to At least -+-100 V and ---100 V
100 kHz permits measurements of differential signals less 50 mV/Div ;
X10 VC Out
thanl mV in amplitude on10volt common-mode signals.
0.1 V/Div to
When used as a differential comparator, the 7A13 has 0.5 V/Div;
X10 V c In
an effective offset range of 10,000 divisions.
0.1 V/Div to At least -i-500 V and ---500 V
0 .5 V/Div;
X10 V c Out
Electrical Characteristics
The electrical characteristics described in fable 1-1 are 1 V/Div to 5 V/Div At least +500 V and -500 V
valid over the stated environmental range of instruments X10 V c In
calibrated at an ambient temperature of +20