Table Of Contents - Tektronix 2246 1Y Service Manual

LIST OF ILLUSTRATIONS....................................... vi
LIST OF TABLES ........................................................ vii
OPERATORS SAFETY SU M M A R Y...................... viii
SERVICING SAFETY SUMMARY ..........................
Section 1 SPECIFICATION
INTRODUCTION..............................1-1
STANDARD ACCESSORIES___ 1-1
RECOMMENDED RECALIBRATION
SCHEDULE ...................
PERFORMANCE CONDITIONS . . 1-2
Section 2 PREPARATION FOR USE
SAFETY...........................................2-1
LINE VOLTAGE AND POWER
CORD .............................................2-1
LINE FUSE .................................... 2-1
INSTRUMENT COOLING . .......... 2-2
START-UP...................................... 2-2
DETAILED OPERATING
INFORMATION................................2-2
Section 3 THEORY OF OPERATION
SECTION ORGANIZATION .......... 3-1
INTEGRATED CIRCUIT
DESCRIPTIONS ..............................3-1
BLOCK DIAGRAM
DESCRIPTION .................................... 3-1
INTRODUCTION..............................3-1
REV OCT 1991

TABLE OF CONTENTS

Page
ix
1-1
2246 1Y and 2246 Mod A Service
VERTICAL INPUTS
(Diagram 1) ..............................
VERTICAL PREAMPS AND
OUTPUT AMPLIFIER
(Diagram 2) ..............................
A AND B TRIGGER SYSTEM
(Diagram 3) ..............................
DISPLAY AND TRIGGER LOGIC
AND PROCESSOR INTERFACE
(Diagram 4) ..............................
A AND B SWEEPS AND
DELAY COMPARATORS
(Diagram 5) ..............................
HORIZONTAL OUTPUT
AMPLIFIER (Diagram 6 ) ........... 3-4
Z-AXIS, CRT, PROBE ADJUST,
AND CONTROL MUX
(Diagram 7) ..............................
MEASUREMENT PROCESSOR
(Diagram 8) ..............................
READOUT SYSTEM
(Diagram 9) ..............................
SWITCH BOARD AND INTERFACE
(Diagram 10) ............................
ADC AND DAC SYSTEM
(Diagram 11) ............................
POWER SUPPLY
(Diagram 12) ............................
DETAILED CIRCUIT DESCRIPTION
VERTICAL INPUTS
(Diagram 1) ..............................
VERTICAL PREAMPS AND OUTPUT
AMPLIFIER (Diagram 2 ) ........... 3-9
A AND B TRIGGER SYSTEM
(Diagram 3) ............................ 3-12
DISPLAY AND TRIGGER LOGIC
AND PROCESSOR INTERFACE
(Diagram 4) ............................ 3-16
Page
3-1
3-2
3-2
3-3
3-4
3-4
3-5
3-5
3-6
3-6
3-6
3-6
3-6
i