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Tektronix 2445 User Manual
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38
F
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r
s
t
Pri
nt
in
g
OC
T
1982
R
evis
ed
JAN
19
85
Tektronix,
Inc.
P.O.
Box
500
Beaverton,
Oregon
97077
070-3830-00
Product
Group
38
COMMITTED
TO
EXCELLENCE
PLEASE
CHECK
F0R
CHANGE
INFORMATION
AT
THE
REAR
OF
THIS
MANUAL.
2445
OSCILLOSCOPE
OPIERATORS
INSTRUCTlON
MANUAL
Serial
Number
______
_
First
Printing
OCT
1982
Revised
JAN
1985
1
3
Table of Contents
Default Chapter
4
Table of Contents
4
Operators Safety Summary
6
Section 1 Specification
8
Introduction
8
Performance Conditions
8
The 2445 Oscilloscope
8
Mechanical Characteristics
8
Electrical Characteristics
9
Environmental Characteristics
16
Section 2 Preparation for Use
18
Safety
18
Line Voltage Selection
18
Line Fuse
18
Power Co R D
18
Instrument Cooling
18
Start-Up
19
Repackaging for Shipment
19
2 Line Selector Switch, Line Fuse, and Detachable Power Cord
19
Voltage, Fuse, and Power-Cord Data
20
Section 3 Controls, Connectors
22
And Indicators
22
Power and Display
22
E R T IC a L
23
Vertical Controls and CH 1 or X and CH 2 Connectors
23
Channel 3 and Channel 4 Controls and Connectors and CALIBRATOR O U T P U T
24
Horizontal and Delta Measurement
25
Trigger
28
Trigger Controls and Indicators
28
Rear Panel
30
Rear-Panel Controls and Connectors
31
Readout Display
32
3 Readout Display Locations
32
Section 4 Operating Considerations
34
Graticule
34
Time and Voltage Measurements
34
Grounding
34
Signal Connections
35
Input-Coupling Capacitor Precharging
35
External Triggering
35
Section 5 Operator's Checks and
36
Introduction
36
Initial Setup
36
Trace Rotation Adjustment
36
Astigmatism Adjustment
37
Auto DC Balance Adjustment
37
5 Probe Low-Frequency Compensation
37
Matching Channel 2 Delay
38
Amplitude Check
39
Timing Check
39
6 Instantaneous DC Levels
40
Voltage Ratio
41
Section 6 Basic Applications
40
Index of Procedures
40
Voltage Measurement
40
Voltage Ratios
41
Algebraic Addition and Eliminating Common-Mode Signals
42
Eliminating Common-Mode Signals
42
Time Interval
43
Frequency
43
Measuring Rise Times
43
Time Difference between Two Time-Related Pulses
44
Time Ratio
44
Time Difference between Two Time-Related Pulses (Cursor M E Th O D )
44
Phase Difference between Two Time-Related Signals
45
Small-Angle Phase Difference
45
Time Ratio (Duty Cycle).
45
Delayed-Sweep Operation
46
Time Ratios (Duty C y C Le S )
45
Phase Difference between Two Time-Related Signals
46
Section 7 Options and Accessories
50
Introduction
50
Option 1 R
50
Power Cord Options
50
Standard Accessories
51
Optional Accessories
51
Confidence Test Numbers and Descriptions
52
Appendix A Power-Up Tests
52
Kernel Tests
52
Confidence Tests
52
Change Information
54
4
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Tektronix 2445 Specifications
General
Brand
Tektronix
Model
2445
Category
Test Equipment
Language
English
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