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T921
Tektronix T921 User Manual
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TEKTRONIX®
EFF
SN
B012999
(T912)
070-1981-01
EFF
SN
B011634
(T921)
070-1982-01
EFF
SN
B019319
(T922)
070-1982-01
EFF
SN
B010749
(T922R)
070-1982-01
ADD
:
committed
to
technical
excellence
MANUAL
CHANGE
INFORMATION
PRODUCT
T912
and
CHANGE
REFERENCE
X
2755
T921/T922/T922R
I
DATE
1-23-78
--
CHANGE
:
I
DESCRIPTION
ELECTRICAL
PARTS
LIST
AND
SCHEMATIC
CHANGES
C762
290-0301-00
CAP
.,FXD,ELCTLT
:l0UF,10%,20V
DIAGRAM
\/>
POWER
SUPPLY
Add
C762
from
the
junction
of
R762
and
VR762
to
ground
.
The
(+)
end
of
capacitor
goes
to
ground
.
C762
is
located
on
the
LOW
VOLTAGE
POWER
SUPPLY
board
and
shown
on
diagram
2
.
PAGE
1
OF
1
214
216
Table of Contents
Table of Contents
3
List of Illustrations Only
4
List of Tables
5
Specifications
7
Electrical
7
Environmental
9
Physical
9
Standard Accessories
11
Recommended Accessories
12
Operating Instructions
13
Operating Voltage
13
Safety Information
13
Function of Controls, Connectors and Indicators, T921 and T922
13
Display
13
Vertical Amplifier
15
Display
17
Time Base
17
First Time Operation
22
Probe Compensation
25
Applications
25
T922R Rackmounting
29
Performance Check
33
Limits and Tolerances
33
Test Equipment Required
33
Test Equipment
33
Time Base
34
Preliminary Procedure
34
Performance Check Procedure
35
Deflection Accuracy
35
Normal Sweep Timing Accuracy
41
Magnified Sweep Timing Accuracy
41
Section 4 Adjustments
47
Limits and Tolerances
47
Adjustment Interaction
47
Partial Procedures
47
Test Equipment Required
47
Preliminary Procedure
48
Display and Power Supply
50
Vertical Amplifier
52
Time Base
56
Service Information
59
Cabinet Removal
59
Preventive Maintenance
59
Troubleshooting
60
Power Supply Tolerance
61
Corrective Maintenance
68
T922R Line Voltage and Range Selection
79
Repackaging for Shipment
79
Electrical Replaceable Parts
81
Options
108
Vertical Amplifier
111
Block Diagram
115
CRT and Vertical Amplifier
121
Rev . B Jul 197
126
Power Supply
127
Attenuator and Gain Switching Sequence
128
Vertical Input (T921)
133
Vertical Input (T922)
134
Attenuator and Gain Switching
134
Vertical Switching (T922)
145
Trigger (Late)
157
T922R Circuit Board Interconnections
172
Change Information
207
4
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Tektronix T921 Specifications
General
Brand
Tektronix
Model
T921
Category
Test Equipment
Language
English
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