2236 Service
TABLE OF CONTENTS
Page
LIST OF ILLUSTRATIONS ......................................
iv
LIST OF TABLES .....................................................
v
OPERATORS SAFETY SUMMMARY ......................
vi
SERVICING SAFETY SUMMARY............................
vii
SECTION 1
SPECIFICATION
INTRODUCTION .............................. 1-1
ACCESSORIES................................ 1-1
PERFORMANCE CONDITIONS . . . . 1-1
SECTION 2
OPERATING INSTRUCTIONS
PREPARATION FOR USE .............. 2-1
SAFETY ...................................... 2-1
LINE VOLTAGE .......................... 2-1
POWER C O R D ............................ 2-1
LINE FUSE .................................. 2-1
INSTRUMENT COOLING............ 2-2
CONTROLS, CONNECTORS, AND
INDICATORS.................................... 2-2
DISPLAY, POWER, AND PROBE
ADJUST ...................................... 2-2
VERTICAL .................................. 2-3
HORIZONTAL.............................. 2-4
TRIGGER .................................... 2-6
COUNTER, TIMER, AND
MULTIMETER ............................ 2-8
RIGHT SIDE PANEL.................... 2-9
REAR PANEL .............................. 2-9
OPERATING CONSIDERATIONS .. . 2-11
GRATICULE ................................ 2-11
GROUNDING .............................. 2-11
SIGNAL CONNECTIONS ............ 2-11
INPUT COUPLING CAPACITOR
PRECHARGING .......................... 2-11
POWER-UP CHECKS ................ 2-12
CTM MEASUREMENT
CONSIDERATIONS .................... 2-12
STATUS AND ERRORS
MESSAGES ................................ 2-12
OPERATOR’S ADJUSTMENTS . . . . 2-14
INTRODUCTION ........................ 2-14
BASELINE T R A C E ...................... 2-14
TRACE ROTATION...................... 2-14
PROBE COMPENSATION .......... 2-15
Page
SECTION 3
THEORY OF OPERATION
INTRODUCTION .............................. 3-1
SECTION ORGANIZATION ........ 3-1
INTEGRATED CIRCUIT
DESCRIPTIONS .......................... 3-1
GENERAL DESCRIPTION .............. 3-2
OSCILLOSCOPE ........................ 3-2
CTM ............................................ 3-3
DETAILED CIRCUIT DESCRIPTION
3-4
OSCILLOSCOPE ........................ 3-4
VERTICAL ATTENUATORS . . 3-4
Input Coupling .................... 3-4
Buffer Amplifier and Gain
Switching Network ............ 3-5
Paraphase Amplifier .......... 3-5
VERTICAL PREAMPLIFIERS . 3-5
CHANNEL SWITCH AND
VERTICAL OUTPUT .............. 3-6
Delay Line Driver................ 3-7
Vertical Output Amplifier . . . 3-7
A/B Sweep Separation
Circuit ................................ 3-8
TRIGGER AMPLIFIERS AND
SW ITCHING............................ 3-8
Internal Trigger Amplifier . . . 3-9
A External Trigger Amplifier
3-9
Line Trigger Amplifier ........ 3-9
A TRIGGER GENERATOR . . . 3-9
A Trigger Level Circuit . . . . 3-9
A Trigger Level Comparator
3-10
A Schmitt Trigger and TV
Trigger Circuit .................... 3-10
A SWEEP GENERATOR AND
LOGIC .................................... 3-10
A Miller Sweep Generator .. 3-11
A Sweep Logic .................. 3-11
ALTERNATE B S W E E P .......... 3-12
B Miller Sweep Generator . 3-12
B Trigger Level Comparator
3-13
Runs After D elay................ 3-13
B Delay Time Position
Comparator ........................ 3-13
B Sweep Logic .................. 3-13
Alternate Display Switching
Logic .................................. 3-14
B Z-Axis Logic .................. 3-14
i
Summary of Contents for 2236
Page 10: ...2236 Service viii The 2236 Oscilloscope ...
Page 74: ...Theory of Operation 2236 Service 3 30 ...
Page 102: ...Performance Check Procedure 2236 Service 4 21 Figure 4 1 Test setup for DMM common mode check ...
Page 242: ...2236 Service 4204 34 Figure 9 6 CTM basic block diagram ...
Page 243: ...DMM POWER S U P P LIE S 2236 Service F ig u re 9 7 C T M d e ta ile d b lo c k diag ram ...
Page 254: ...S I 0 O I 5 1 S O i 4204 21 C IR C U IT BOARD INTERCONNECTIONS ...
Page 267: ...1 2 3 4 5 6 7 8 9 J T K L M_ _ ___ N___l _ P____l S ...
Page 271: ...1 2 3 4 5 6 7 8 9 lO P2SO O U1 A TRIGGER V T O W2500 5 A 223 R E V A P R W G ...
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Page 313: ...2236 Service T O U I 3 0 0 4 8 K T O UI300 II S K 0 2 2 3 6 Z Z O A Z 2 OPTION IA ...
Page 317: ...A 10 C O U N T E R T IM E R M U L T IM E T E R B O A R D A D J U S T M E N T LO C A T IO N S ...
Page 319: ...2236 Service TROUBLESHOOTING GUIDE 4206 99 4204 69A ...
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