Tektronix 2232 Service Manual page 2

SPECIFICATION
INTRODUCTION ............. l-l
ACCURACY ANW
RESOLUTION ................
1-l
STANDARD ACCESSORIES .... l-2
PERFORMANCE
CONDITIONS
................ l-2
OPERATING INFORMATION
SAFETY .....................
2-1
LINE VOLTAGE ...............
2-l
POWER CORD ...............
2-l
LINE FUSE .................. 2-l
INSTRUMENT COOLING ....... 2-2
START-UP
.................. 2-2
REPACKAGING
.............. 2-2
THEORY OF OPERATION
SECTION ORGANIZATION ..... 3-1
INTEGRATED CIRCUIT
DESCRIPTIONS .............. 3-1
GENERAL DESCRIPTION ...... 3-1
DETAILED CIRCUIT
DESCRIPTION
................. 3-7
INTRODUCTION ............. 3-7
VERTICAL ATTENUATORS
..... 3-7
VERTICAL PREAMPLIFIERS
.... 3-9
VERTICAL OUTPUT
AMPLIFIER ................. 3-12
TRIGGERING
............... 3-13
A SWEEP GENERATOR AND
LOGIC ..................... 3-17
B TIMING AND ALTERNATE
B SWEEP ..................
3-20
HORIZONTAL ............... 3-24
MICROPROCESSOR ......... 3-26
STATUS ADC AND BUS
INTERFACE ................ 3-29
2232 Service
TABLE OF CONTENTS
Page Page
LIST OF ILLUSTRATIONS . . . . . . . . . . _ . . . . a. Ill
LIST OF TABLES . . . . . . . . . . . . . . . . . . . . . . . . . Y
OPERATORS SAFETY SUMMARY *. _ . . . . . . . . vl
SERVICING SAFETY SUMMARY . . . . . . . . . . . . . VII
Section I
STORAGE ACQUISITION
..... 3-29
DIGITAL TIME BASE ......... 3-30
DIGITAL DISPLAY ............ 3-31
VECTOR GENERATOR .......
3-33
DIGITAL ACQUISITION AND
MEMORY .................. 3-34
POWER INPUT, PREREGULATOR
AND INVERTER .............
3-35
POWER SUPPLY SECONDARIES,
Z-AXIS AND CRT ............
3-38
X-Y PLOTTER ..............
3-41
Sectlon 4 PERFORMANCE CHECK
PROCEDURE
INTRODUCTION ............... 4-l
PURPOSE .................. 4-l
PERFORMANCE CHECK
INTERVAL ................... 4-l
STRUCTURE ................ 4-l
TEST EQUIPMENT
REQUIRED ..................
4-l
LIMITS AND TOLERANCES ..... 4-l
PREPARATION FOR CHECKS ... 4-1
INDEX TO PERFORMANCE
CHECK STEPS ............... 4-3
VERTICAL ...................... 4-4
INITIAL CONTROL
SEITINGS ..................
4-4
PROCEDURE STEPS .......... 4-4
HORIZONTAL ................. 4-l 1
INITIAL CONTROL
SETTINGS .................
4-I 1
PROCEDURE STEPS ......... 4-l 1
TRIGGER .................... 4-16
INITIAL CONTROL
SElTlNGS ................. 4-1 B
PROCEDURE STEPS ......... 4-16
DCTERNAL Z-AXIS. PROBE ADJUST,
EXTERNAL CLOCK, AND X-Y
PLOTTER .................... 4-20
INITIAL CONTROL
SETRNGS .................
4-20
PROCEWURE STEPS ......... 4-20
I