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MR
I N STFR U CTI O N
MAN UAL Serial Number
7A16
AMPLIFIER
Tektronix, Inc .
S .W . Millikan Way " P. O. Box 500 " Beaverton, Oregon 97005 " Phone 644-0161 " Cables : Tektronix
070-0980-00 1069
WARRANTY
All Tektronix instruments are warranted
against defective materials and workman-
ship for one year . Tektronix transformers,
manufactured in our plant, are warranted
for the life of the instrument.
Any questions with respect to the war-
ranty mentioned above should be taken
up with your Tektronix Field Engineer .
Tektronix repair and replacement-part
service is geared directly to the field,
therefore all requests for repairs and re-
placement parts should be directed to the
Tektronix Field Office or representative
in your area . This procedure will assure
you the fastest possible service . Please
include the instrument Type and Serial or
Model Number with all requests for parts
or service,
Specifications and price change privi-
leges reserved .
Copyright "' 1969 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 permis-
sion of the copyright owner .
Type 7A16
TABLE -OF CONTENTS
SECTION 1 SPECIFICATION Page SECTION 5 PERFORMANCE CHECK/
CALIBRATION
Introduction 1-1
Electrical Characteristics Introduction 5-1
Deflection Factor 1-1 Test Equipment Required 5-1
Gain 1-1 Short Form Procedure 5-2
Frequency Response 1-1 Performance Check/Calibration Procedure
Maximum Input Voltage 1-1 Preliminary Procedure 5-3
Input Resistance 1-1 Preliminary Control Settings 5-4
Input Capacitance 1-1 Check or Adjust
Maximum Input Gate Current 1-1 DC Balance 5-4
Noise (Tangentially Measured) 1-1 Variable Balance 5-4
DC Drift 1-1 STEP ATTENUATOR Range 5-4
Environmental Characteristics STEP ATTENUATOR Balance 5-4
Altitude Position Centering 5-5
Transportation POSITION Range 5-5
Physical Characteristics +UP to INVERT Shift 5-5
Finish GAIN 5-5
Dimensions VARIABLE Range 5-6
Weight Trigger DC Level 5-6
Trigger Gain 5-6
SECTION 2 OPERATING INSTRUCTIONS VOLTS/DIV Deflection Accuracy 5-6
Input Compensation 5-7
General 2-1 Series and Shunt Compensation 5-7
Front Panel Controls and Connector 2-1 High Frequency Compensation (5 mV) 5-8
First Time Operation 2-1 High Frequency Compensation (10 mV) 5-8
Control Setup Chart 2-3 High Frequency Compensation (20 mV) 5-8
General Operating Information 2-3 Step Response 5-9
Basic Applications 2-5 Upper -3 dB Point 5-9
Trigger Step Response 5-10
SECTION 3 CIRCUIT DESCRIPTION 20 Megahertz Bandwidth Limiting 5-11
Noise (Tangentially Measured) 5-11
Introduction 3-1
Block Diagram Description 3-1 SECTION 6 ELECTRICAL PARTS LIST
Detailed Circuit Description
Input Coupling 3-2 Abbreviations and Symbols
Input Attenuator 3-2 Parts Ordering Information
Input Stage 3-2 Index of Electrical Parts List
First Cascade Stage 3-2
Second Cascade Stage 3-3 SECTION 7 DIAGRAMS AND MECHANICAL
Output Stage 3-3 PARTS ILLUSTRATIONS
Readout Block 3-3
Diagrams
Mechanical Parts Illustrations
SECTION 4 MAINTENANCE
Preventive Maintenance SECTION 8 MECHANICAL PARTS LIST
Cleaning 4-1
Mechanical Parts List Information
Lubrication 4-1
Index of Mechanical Parts Illustrations
Visual Inspection 4-1
Mechanical Parts List
Transistor Checks 4-1
Accessories
Recalibration 4-1
Troubleshooting
Troubleshooting Aids 4-2 Change Information
Troubleshooting Equipment 4-4 Abbreviations and symbols used in this manual
Troubleshooting Techniques 4-4 are based on or taken directly from IEEE Standard
Corrective Maintenance 260 "Standard Symbols for Units", MIL STD-12B
Obtaining Replacement Parts 4-6 and other standards of the electronics industry .
Soldering Techniques 4-6 Change information if any, is located at the rear
Component Replacement 4-6 of this manual .
Fig . 1-1 . Type 7A16 Amplifier_
Type 7A16
SECTION 1
SPECIFICATIONS
Change information, if any, affecting this section will be found at the
rear of the manual .
INTRODUCTION 20 Megahertz Band- DC to 20 megahertz within 3
The Type 7A16 vertical amplifier plug-in unit is part of the width metahertz.
7000-series oscilloscope system. It is a wide band DC coupled Risetime 15 nanoseconds to 21 nanoseconds .
amplifier with calibrated deflection factors from 5 mV/Div to Maximum Input Voltage
5 V/Div. Internal gain and compensation circuits are auto- DC (Direct) Coupled
matically switched to correspond with the setting of the 100 mV/Div to 500 VDC. 500 V, DC + P-P AC at
VOLTS/DIV switch . A polarity switch provides an inversion of 5 V/Div 1 kHz or less .
the signal within the amplifier. A bandwidth limit switch 5 mV/Div to 100 VDC. 100 V, DC + P-P AC at
allows low-frequency, low-level signals to be viewed with 50 mV/ Div 1 kHz or less .
reduced interference from signals above 20 megahertz. AC (Capacitance Cou- 500 V.
The upper bandwidth limit of the Type 7A16 is mainly pled Input DC Volt-
determined by the oscilloscope in which it is used . For ex- age
ample, the Type 7A16 used with the Type 7504 oscilloscope Input Resistance 1 me ohm within 2% .
will have an upper bandwidth limit of approximately 90 Input Capacitance 15 picofarads within 0.5 picofarad.
MHz, and when plugged into a Type 7704 oscilloscope the
R and C Product Within 1 % over all deflection
upper bandwidth limit will be approximately 150 MHz. Re-
factor settings.
fer to the approperiate oscilloscope manual for complete
information. Maximum Input Gate 0.5 nanoampere or less at 0