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Tektronix 2430 Service Manual
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3-35
Figure
3-3.
System
Clock
waveforms.
REV
APR
1988
4917-04B
'---_~l
=U=50ns
LJ
U
=i
250ns
I~
_..I
250ns
I~
LOAD
U623B-6
00S21
U720B-9
OS21
UB31-13
oS11
UB31-14
OS13
UB31-12
OS23
UB31-15
SYNC
U623A-2
RESET
U731E-B
OSAM2
U731B-6
oSAM1
U731A-3
4XPC
I
U622-11
2XPC
F500ns--1
U523-9
C20M2
U513C-6
TTL4C
U720-2
SYNC4C
U720-5
D14XPC
I
U642-15
o24XPC
J
U642-13
Theory
of
Operation-2430
Service
68
70
Table of Contents
Table of Contents
4
Environmental Characteristics
12
Mechanical Characteristics
12
Oscilloscope
12
Electrical Characteristics
13
Dimensional Drawing
30
Line Voltage Selector
31
Voltage, Fuse, and Power-Cord Data
32
Calibration
34
Simplified Memory Map of the 2430
52
Host Memory-Mapped
53
Processor Control Register Functions
54
System Clock Waveforms
69
Components
82
Trigger Logic Array Control Data Byte
85
REF4/5 Frequency for each SEC/DIV Setting
86
Phase Clock Array Control Lines (CC3 through CCO)
87
Jitter Correction Waveforms
89
Holdoff Delay Range for Current Source Vs Charging Capacitor Combinations
91
Side Board Address Decoding
93
Readout State Machine Flow Chart
103
DC Restorer
110
Video Option Field-Sync Identification
120
PWM Regulator and Inverter
126
Test Equipment Required
134
Accuracy Limits CH 1 and CH 2 CURSOR VOLTS Readout and a and B TRIGGER LEVEL Readouts
140
Adjustment Locations for Displays 4 through
172
Maintenance
181
The 2430 Digital Oscilloscope
181
Relative Susceptibility to Static-Discharge Damage
183
External Inspection Check List
185
Internal Inspection Check List
186
Section 9 DIAGRAMS
187
Troubleshooting Charts
188
Maintenance Aids
192
Multipin Connector
194
Installation Sequence for Installing the Crt Frame Screws
203
Main EXT DIAG Menu
207
Trigger LED Binary Coding for Diagnostic Tests
208
Power
273
Video Option Troubleshooting
279
INIT PANEL States
283
Accessories
286
Accessory
286
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Tektronix 2430 Specifications
General
Brand
Tektronix
Model
2430
Category
Test Equipment
Language
English
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