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2465B
Tektronix 2465B Service Manual
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CIRCUI
T
NUMBE
R
C201
0
C201
1
C210
1
C211
0
C211
1
C211
3
C216
0
C222
0
C222
1
C222
2
C223
0
C224
0
C224
1
C225
0
C232
1
C232
2
C232
3
C232
4
C232
5
C233
0
C233
1
C233
2
C233
3
C235
0
C235
2
C236
0
C241
5
C242
0
C242
1
C242
2
C242
5
C243
0
C243
1
C243
2
C243
3
C243
4
C244
0
C245
0
C245
1
C245
2
C246
0
C246
5
C250
1
C251
0
C251
1
C252
0
C252
1
C253
0
C254
0
C254
2
C255
0
C261
0
C262
1
C262
2
C262
3
C262
9
C263
0
C263
1
C263
2
C263
3
C263
4
C264
0
C264
1
C265
0
C272
0
C272
1
C272
2
C273
0
C273
1
C273
2
C273
3
C273
4
C282
0
C282
1
C283
0
C283
1
C283
5
C283
6
C265
0
C285
1
SCHE
M
NUMBE
R
2
1
2
1
2
2
1
2
1
2
1
2
1
2
1
2
1
2
2
1
2
1
1
2
2
2
2
2
2
2
1
2
2
2
1
1
2
1
1
2
2
2
2
2
2
2
2
2
2
1
2
1
2
1
2
1
2
1
2
1
1
2
1
2
2
1
2
2
1
2
1
2
1
2
1
2
1
2
2
2
2
1
2
2
2
2
2
2
1
2
1
2
1
2
2
2
2
2
2
2
2
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
CIRCUI
T
NUMBE
R
C285
5
C286
0
C286
1
C287
0
C287
5
C288
5
C289
0
C290
1
C290
5
C291
1
C291
3
C292
6
C294
0
C295
0
C296
0
C296
5
C297
0
C298
0
C298
1
C299
0
C299
5
CR223
0
CR233
2
CR242
0
CR242
1
CR242
2
CR242
3
CR261
0
CR262
0
CR262
1
CR264
0
J25
1
J25
1
J41
1
J41
1
J50
1
J50
3
J50
4
J51
1
J51
1
J51
2
J51
2
J51
2
J65
1
J65
2
J65
2
J65
2
J424
1
J424
1
J424
1
J433
0
J433
0
Q232
0
Q280
5
R200
1
R200
2
R200
4
R200
5
R200
6
R200
7
R201
0
R201
1
R201
2
R201
3
R201
4
R201
5
R201
6
R210
1
R210
2
R210
3
R210
4
R220
1
R220
2
R220
3
R220
4
R220
5
A5
—
SCHE
M
NUMBE
R
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
7
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
2
2
2
2
2
2
2
2
2
2
1
1
2
7
1
2
2
1
2
2
1
2
1
2
1
2
2
1
2
1
2
1
2
1
2
1
1
2
2
7
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
CONTROL/READOUT/BUFFE
R
BOAR
D
(S
N
B05000
0
&
ABOVE
)
CIRCUI
T
NUMBE
R
R221
0
R221
1
R221
2
R221
3
R221
4
R221
5
R222
0
R223
0
R223
1
R223
2
R224
1
R224
2
R224
4
R225
1
R230
1
R230
2
R230
3
R230
4
R230
5
R232
0
R232
1
R232
2
R232
3
R232
9
R233
0
R233
1
R233
2
R233
3
R233
4
R234
0
R234
1
R234
2
R234
3
R234
4
R234
5
R234
6
R240
1
R240
2
R240
3
R240
4
R240
5
R240
6
R240
7
R240
8
R240
9
R241
0
R241
1
R241
2
R241
3
R241
4
R241
5
R241
6
R241
7
R242
0
R242
1
R242
2
R242
3
R242
4
R243
0
R243
1
R243
2
R243
3
R243
4
R243
5
R244
0
R244
1
R244
2
R244
3
R244
4
R246
1
R246
5
R250
1
R250
2
R250
3
R250
4
R250
S
R251
1
R251
2
R251
3
R252
0
SCHE
M
NUMBE
R
2
2
2
1
1
1
2
2
2
2
1
1
1
1
2
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
CIRCUI
T
NUMBE
R
R252
1
R252
2
R252
3
R252
4
R253
1
R253
2
R253
3
R253
4
R253
5
R253
6
R253
7
R254
0
R256
0
R260
1
R260
2
R260
3
R261
1
R261
2
R261
3
R262
0
R262
1
R262
2
R262
3
R262
4
R262
5
R262
6
R263
0
R263
1
R263
2
R264
0
R264
3
R264
4
R264
5
R264
6
R264
7
R264
8
R264
9
R270
1
R270
2
R270
3
R270
4
R270
5
R270
6
R270
7
R270
8
R270
9
R271
0
R271
1
R271
2
R272
0
R272
1
R273
0
R273
1
R273
2
R273
3
R273
4
R273
5
R274
0
R274
1
R283
0
R286
5
R286
6
R288
5
R289
0
R290
2
R290
3
R290
4
R290
5
R290
6
R290
7
R290
8
R290
9
R291
0
R291
1
R291
2
R291
3
R291
4
R291
5
R291
6
R291
7
SCHE
M
NUMBE
R
2
2
2
2
2
2
2
2
2
2
2
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
CIRCUI
T
NUMBE
R
R291
8
R291
9
R292
0
R292
1
R292
2
R292
3
R292
4
R292
5
R292
6
R292
7
R292
8
R292
9
R293
0
R293
1
R293
2
R293
3
R293
4
R293
5
R296
0
R296
1
R299
5
TP
1
TP
2
TP
3
TP
4
TP
5
TP
6
TP
7
TP
8
TP
9
TP1
0
TP1
1
TP1
2
TP1
3
TP1
4
TP1
5
TP1
6
TP1
7
TP1
8
TP1
9
TP2
0
TP2
1
TP2
2
TP2
3
TP2
4
TP2
5
TP2
6
TP2
7
TP2
8
TP2
9
TP3
0
TP3
1
TP3
2
TP3
3
U210
1
U210
1
U214
0
U214
0
U216
0
U216
0
U220
1
U220
1
U221
0
U221
0
U222
0
U222
0
U224
0
U224
0
U225
0
U225
0
U226
0
U226
0
U230
1
U230
1
U231
0
U231
0
U235
0
U235
0
SCHE
M
NUMBE
R
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
2
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
2
1
2
1
1
2
1
1
2
2
1
2
2
1
2
2
1
2
1
1
2
1
1
2
1
1
2
2
1
2
2
1
2
1
1
2
CIRCUI
T
NUMBE
R
U236
0
U236
0
U240
1
U240
1
U240
5
U240
5
U241
0
U241
0
U241
5
U241
5
U242
0
U242
0
U242
5
U242
5
U243
0
U243
0
U244
0
U244
0
U245
0
U245
0
U246
0
U246
0
U250
1
U250
1
U251
0
U251
0
U252
0
U252
0
U252
1
U252
1
U253
0
U253
0
U254
0
U254
0
U255
0
U255
0
U256
0
U256
0
U257
0
U257
0
U260
1
U260
1
U262
0
U262
0
U263
0
U263
0
U264
0
U264
0
U265
0
U265
0
U266
0
U266
0
U280
0
U280
0
U280
5
U280
5
U281
0
U281
0
U282
0
U282
0
U283
0
U283
0
U283
5
U283
5
U285
0
U285
0
U285
5
U285
5
U286
0
U2B5
0
U286
5
U286
5
U2B7
0
U287
0
U287
5
U287
5
U288
0
U288
0
U288
5
U288
5
SCHE
M
NUMBE
R
1
1
2
2
1
2
1
1
2
2
1
2
1
1
2
2
1
2
1
1
2
2
1
2
1
1
2
1
1
2
1
1
2
2
1
2
2
1
2
2
1
2
2
1
2
2
1
2
1
1
2
1
1
2
1
1
2
1
1
2
2
1
2
2
1
2
2
1
2
1
1
2
1
1
2
1
1
2
7
1
2
7
1
2
7
1
2
7
1
2
7
1
2
7
1
2
7
1
2
7
1
2
7
1
2
7
1
2
7
1
2
7
1
2
7
1
2
7
1
2
CIRCUI
T
NUMBE
R
U269
0
U289
0
U290
0
U290
0
U290
5
U290
5
U291
0
SCHE
M
NUMBE
R
7
1
2
7
1
2
7
1
2
7
CIRCUI
T
NUMBE
R
U291
0
U292
0
U292
0
U293
0
U293
0
U293
5
U293
5
A5—CONTROL/READOUT/BUFFE
R
BOAR
D
(cont
)
(S
N
B05000
0
&
ABOVE
)
SCHE
M
NUMBE
R
1
2
7
1
2
7
1
2
7
1
2
CIRCUI
T
NUMBE
R
U294
0
U294
0
U295
0
U295
0
U296
0
U296
0
U296
5
SCHE
M
NUMBE
R
7
1
2
7
1
2
7
1
2
7
CIRCUI
T
NUMBE
R
U296
5
U297
0
U297
0
U297
5
U297
5
U298
0
U298
0
SCHE
M
NUMBE
R
1
2
7
1
2
7
1
2
7
1
2
CIRCUI
T
NUMBE
R
U298
5
U298
5
U299
0
U299
0
U299
5
U299
5
SCHE
M
NUMBE
R
7
1
2
7
1
2
7
1
2
CIRCUI
T
NUMBE
R
Y254
0
Y254
0
SCHE
M
NUMBE
R
1
1
2
2465B/2467
B
Servic
e
is
?
'
o
z
°
3
*
P
>
3
D
5
r
n
O
>
J
5
o
a
s
c
1
1
t
l
m
3
0
407
409
Table of Contents
Warranty
3
List of Illustrations
7
List of Tables
8
Operators Safety Summary
10
Servicing Safety Summary
11
Specification
13
Performance Conditions
13
Horizontal Deflection System
19
Z-Axis Input
21
Signal Outputs
22
A GATE out and B GATE out
22
Ac Power Source
22
Signal Input
26
Logic Trigger
28
Asynchronous Mode
32
Inputs and Outputs
32
Power Cord Receptacle
40
Repackaging for Shipment
40
Theory of Operation
43
High Voltage
45
Detailed Circuit Description
47
Processor and Digital Control
47
FRONT-PANEL SCANNING and ANALOG CONTROLS
51
Front Panel Controls
53
Switch Matrix
54
Attenuators and Preamps
55
SCALE ILLUM Control
58
Display Sequencer, Triggers, and Sweeps
59
Parametric Measurements
65
Vertical Channel Switch and Output Amplifiers
65
Low-Voltage Power Supply
88
Low-Voltage Regulators
93
Power Distribution
95
Performance Check and Functional Verification Procedure
151
Trig Aft Dly
158
Trigger Source
161
Vertical Mode
161
Counter/Timer/Trigger Checks
181
HORIZONTAL (Cont)
186
Vertical Mode
187
Calibrator, External Z-Axis and Gate Outputs
188
Trigger Holdoff
189
Additional Functional Verification
190
Vertical Position
191
Word Recognizer Checks
192
Adjustment Procedure
197
Adjust-Intensity
201
Adjustment Locations
203
ADJUST-Edge
204
Cal 01-Horizontal
209
Volts DIV
209
Cal 02-Vertical
212
Trigger Coupling
214
Cal 03-Triggering
214
Cal 04-Ch 2 Delay Enable/Disable
215
Cal 06-Vertical Transient Response
216
Maintenance
223
Static-Sensitive Components
223
Preventive Maintenance
224
General Care
224
Inspection and Cleaning
224
Semiconductor Checks
226
Periodic Readjustment
226
Troubleshooting Aids
227
Troubleshooting Equipment
229
Troubleshooting Techniques
229
Diagnostic Routines
232
Corrective Maintenance
242
Maintenance Precautions
242
Obtaining Replacement Parts
242
Maintenance Aids
243
Transistors, Integrated Circuits, and Hybrid Circuits
244
Soldering Techniques
244
Removal and Replacement Instructions
246
Fan Removal
248
Regulator Board
249
Front Panel Removal
251
Power Cord Options
257
Replaceable Electrical Parts
259
Cross Index - Mfr. Code Number to Manufacturer
261
Cross Index - Mfr. Code Number to Manufacturer
331
Diagrams and Circuit Board Illustrations
403
Vertical Mode
420
Preliminary Troubleshooting
457
Replaceable Mechanical Parts
476
Cross Index - Mfr. Code Number to Manufacturer
478
Cross Index - Mfr. Code Number to Manufacturer
500
Optional Accessories
515
Revision Information
518
Manual Change Information
520
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Operator's Manual
207 pages
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Tektronix 2465B Specifications
General
Brand
Tektronix
Model
2465B
Category
Test Equipment
Language
English
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