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ST RU CTI
VA L Serial Nu mber
7 52
DUAL
TIME BASE
Te k tro n ix, Inc . * . . Box 500 " B eaverton, Oregon 97005 " Ph one 644-0161 " Cables : Te k tronix
070-1043-00 670
71352
TABLE OF CONTENTS
SECTION 1 SPECIFICATION Page Preventive Maintenance 4-1
1-1 General 4-1
Introduction
Electrical Characteristics 1-1 Cleaning 4-1
Main Sweep (Table 1-1) 1-1 Transistor FET, and Integrated
Dly'd Sweep (Table 1-2) 1-1 Circuit Checks 4-1
Triggering (Table 1-3) 1-2 Recalibration 4-1
Mixed Sweep, Variable Time Delay Troubleshooting 4-2
(Table 1-4) 1-2 Introduction 4-2
Amplifier (Table 1-5) 1-3 Troubleshooting Aids 4-2
Environmental Characteristics Troubleshooting Equipment 4-3
(Table 1-6) 1-3 Troubleshooting Techniques 4-3
Corrective Maintenance 4-4
Obtaining Replacement Parts 4-4
SECTION 2 OPERATING INSTRUCTIONS
Soldering Techniques 4-5
General 2-1 Component Replacement 4-5
Installation 2-1
Front Panel Controls and Connectors 2-2
SECTION 5 PERFORMANCE CHECK/CALIBRATION
Test Set-up Chart 2-9
First-Time Operating Instructions 2-9 Introduction 5-1
Sweep Calibration Check 2-9 Test Equipment Required 5-1
Simplified First-Time Operation 2-9 Short Form Procedure 5-2
General 5-5
SECTION 3 CIRCUIT DESCRIPTION Procedure 5-5
Introduction 3-1
Simplified Block Diagram 3-1 SECTION 6 ELECTRICAL PARTS LIST
Main Sweep Mode 3-1 Abbreviations and Symbols
Delayed Sweep Mode 3-1 Parts Ordering Information
Mixed Sweep Mode 3-3 Index of Electrical Parts List
External Horiz Input 3-3
Circuit Description 3-4 SECTION 7 DIAGRAMS AND MECHANICAL PARTS
Introduction 3-4 ILLUSTRATIONS
Main Trigger Generator 3-5
Diagrams
Main Sweep Generator 3-7
Delayed Trigger Preamp Mechanical Parts Illustrations (on
3-10
Delayed Trigger Generator 3-11 reverse side of Diagrams)
Delayed Sweep Generator 3-11
Horizontal Preamp 3-13 SECTION 8 MECHANICAL PARTS LIST
Time/Div Readout Switching 3-14 Mechanical Parts List Information
Index of Mechanical Parts Illustrations
SECTION 4 MAINTENANCE Mechanical Parts List
Introduction 4-1 Accessories
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 .
F ig . 1-1 . 7 52 Du al Time B ase .
71352
S E CTIO N l
S PE CI F I CA
Change information, if any, affecting this section will be fo u ndat the rear of this manual.
Introduction TA BLE 1-1 (con t)
The 71352 D ual Time Base is designed specifically for use Characte ristic Performa nce R equirement
with the 7503 In dicator Oscilloscope ; h owever, it is com-
5 s/Div to 3% 3.5% 4% 5%
patible with all 7000-Series Indicator Oscillosco pes . The
.1 s/Div and
71352 features cali brated sweeps from 5 s/div to 50 n s/div
(0 .5 s/div to 5 n s/d iv with 10 M agnification), triggering to .2 s/Div to
100 MHz, an d fo ur d isplay modes . Other features incl ud e .05 s/Div
lighted p ushbutton switches, 0 to 10 times continuous
swee p delay, brigh t b ase line in AUTO mode in abse nce of Any two Divi- 5% of 7% of
adequate triggering signals, an d an AMPL position fo r - sions with in Ce n- measurement measurement
operation. ter 8 Divisions
Display modes include MAIN SWEEP, INTEN SI F I E D Sweep Rate MAIN Continuously variable between cali-
SWEEP, DEL AY ED SWEEP, and M IX ED SWEEP . In the VAR IA BLE Range b rated sweep rates. Exte nds sweep
M IX ED mode, the Main Sweep is d isplayed to point selec- rate to at least 12 .5 s/Div .
te d by the DEL AY TIME MULT, after wh ich the sweep
rate is determined by DLY'D SWEEP setting. This mode
Sweep Lengt h 10.4 Divisions with in 0 .3 Division
p ermits swee p magnificatio n of any p oint on the n ormal at 1 ms/Div . (Adjusted at this rate .)
(Main) sweep selected by the D EL AY TIME M UL T control.
10 .0 to 13 .0 Divisions at all ot her
ELECT R ICAL C HARACTER ISTICS sweep rates.
The P erformance Check procedure given in Section 5
provid es convenient method of checking p erformance of Swee p Holdoff Time
this instrument . The following electrical ch aracteristics 5 s/Div to 1 times the /DIV switch
apply over calibration interval of 1000 h ours or six -
10 s/Div setting or less.
mo nths (w hic hever occurs first) at an am bient temperature
of 0