Tektronix 2440, User Manual

Page: 5 / 531

2440 Service
TABLE OF CONTENTS
Page
LIST OF ILLUSTRATIO NS................................................ iii
LIST OF T A B L E S ................................................................ v
OPERATORS SAFETY S U M M A R Y ................................ vi
SERVICING SAFETY S U M M A R Y................................... vii
Section 1 SPECIFICATION
IN TRO DUCTION....................................... 1-1
PERFORMANCE C O N D IT IO N S .......... 1-4
Section 2 PREPARATION FOR USE
S A F E T Y ...................................................... 2-1
LINE VOLTAGE S E L E C T IO N ............... 2-1
LINE FUSE ................................................. 2-1
POWER C O R D ......................................... 2-3
INSTRUM ENT COOLING....................... 2-3
S TA R T-U P ................................................. 2-3
P O W E R -D O W N ........................................ 2-4
REPACKAGING FOR S H IP M E N T ....... 2-4
Section 3 THEORY OF OPERATION
SECTION ORGANIZATION.................... 3-1
INTEGRATED CIRCUIT
D E S C R IP TIO N S ....................................... 3-1
SIMPLIFIED BLOCK DIAGRAM
D E S C R IP T IO N ............................................... 3-2
DETAILED BLOCK DIAGRAM
D E S C R IP T IO N ............................................... 3-8
INTRODUCTION....................................... 3-8
INPUT SIGNAL CONDITIONING
AND ANALOG S A M P L IN G .................... 3-8
ACQUISITION PROCESS
AND C O N TR O L........................................ 3-10
DATA CLOCKING TO
ACQUISITION M E M O R Y ....................... 3-10
ANALOG DATA CONDITIONING
AND A/D C O N VE R SIO N ........................ 3-11
ACQUISITION PROCESSING
AND D IS PLA Y .......................................... 3-12
DETAILED CIRCUIT
D E S C R IP T IO N ............................................... 3-15
SYSTEM P RO CESSO R ......................... 3-15
WAVEFORM PROCESSOR
S Y S T E M ..................................................... 3-22
Page
FRONT PANEL P R O CESSO R .............. 3-28
FRONT PANEL CO N TR O LS................. 3-30
SYSTEM DAC AND ACQUISITION
CONTROL R EG ISTERS......................... 3-31
SYSTEM DAC (cont) AND
AUXILIARY FRONT PANEL................... 3-33
SYSTEM C LO C K S ................................... 3-35
TIM E BASE CONTROLLER
AND ACQUISITION M E M O R Y ............. 3-39
ATTENUATORS AND
P R E A M P LIFIE R S ..................................... 3-43
PEAK DETECTORS AND
CCD/CLOCK DRIVER S........................... 3-45
TRIGGERS AND PHASE C LO C K S ..... 3-51
JITTER CORRECTION R A M P S .......... 3-56
TRIGGER HOLDOFF, JITTER
COUNTERS, AND C A L IB R A T O R ....... 3-58
CCD O U T P U T .......................................... 3-61
A/D CONVERTER AND
ACQUISITION LATCHES....................... 3-62
DISPLAY AND ATTRIBUTES
M E M O R Y ................................................... 3-63
DISPLAY C O N TR O L ............................... 3-66
DISPLAY O U T P U T .................................. 3-73
HIGH VOLTAGE POWER
SUPPLY AND C R T ................................. 3-75
SYSTEM I/O............................................... 3-80
VIDEO O P T IO N ........................................ 3-84
LOW VOLTAGE POWER S U P P L Y ..... 3-92
LOW VOLTAGE R E G U L A T O R S ......... 3-98
Section 4 PERFORMANCE CHECK AND
FUNCTIONAL VERIFICATION
PROCEDURE
IN T R O D U C T IO N .............................................. 4-1
P R E P A R A TIO N ........................................... 4-1
INITIAL SETU P......................................... 4-4
VERTICAL S Y S T E M ..................................... 4-6
TRIGGERING S Y S T E M S .............................. 4-18
HORIZONTAL S Y S T E M ............................... 4-26
ADDITIONAL VERIFICATIONS
AND C H E C K S ................................................. 4-29