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1502C
Tektronix 1502C User Manual
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Copyright
©
T
ektronix, Inc. All rights reserved.
T
ektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
T
ektronix, Inc., P
.O. Box 500, Beaverton, OR 97077
TEKTRONIX and TEK are registered trademarks of T
ektronix, Inc.
2
4
Table of Contents
Table of Contents
6
General Information
12
Installation and Repacking
13
Table I: Shipping Carton Test Strength
14
Safety Summary
16
Operating Instructions
20
Overview
20
Figure 1-1: Rear Panel Voltage Selector, Fuse, AC Receptacle
21
Table 1-1: Fuse and Voltage Ratings
21
Figure 1-2: Display Showing Low Battery Indication
22
Preparing to Use the 1502C
24
Figure 1-3: 1502C Front-Panel Controls
24
Display
25
Figure 1-4: Display and Indicators
25
Front-Panel Controls
26
Menu Selections
27
Test Preparations
31
Table 1-2: Vp of Various Dielectric Types
31
Figure 1-5: Vp Set at .30, Cursor Beyond Reflected Pulse
32
Figure 1-6: Vp Set at .99, Cursor Less than Reflected Pulse
32
Figure 1-7: Vp Set at .66, Cursor at Reflected Pulse
32
Cable Test Procedure
33
Figure 1-8: 20-Ft Cable at 5 Ft/DIV
33
Figure 1-9: Short in the Cable
34
Figure 1-10: Open in the Cable
34
Figure 1-11: 455-Ft Cable
35
Figure 1-12: 455-Ft Cable
35
Figure 1-13: Reflection Adjusted to One Division in Height
36
Figure 1-14: Return Loss
37
Figure 1-15: Ohms-At-Cursor
38
Figure 1-16: Display with VIEW INPUT Turned off
39
Figure 1-17: Display of a Stored Waveform
39
Figure 1-18: Display of a Stored Waveform
40
Figure 1-19: Waveform Moved to Top Half of Display
41
Figure 1-20: Current Waveform Centered, Stored Waveform
41
Figure 1-21: Current Waveform Center, Stored Waveform Above, Difference below
42
Figure 1-22: Waveform of Three-Foot Lead-In Cable
43
Figure 1-23: Cursor Moved to End of Three-Foot Lead-In Cable
43
Figure 1-24: Cursor Moved to End of Three-Foot Lead-In Cable
44
Figure 1-25: Cursor Moved to 0.00 Ft
44
Figure 1-26: Incident Pulse at Three Divisions
45
Figure 1-27: Waveform of Short 75 Ohm Cable
46
Figure 1-28: Waveform Centered and Adjusted Vertically
46
Figure 1-29: Cursor Moved to Desired Position
47
Additional Features (Menu Selected)
48
Figure 1-30: Waveform Viewed in Normal Operation
48
Figure 1-31: Waveform Showing Intermittent Changes
49
Operator Tutorial
52
What Is the Tektronix 1502C
52
How Does It Do It
52
You, the Operator
52
Menus and Help
52
Getting Started
53
The Waveform up Close
56
A Longer Cable
58
Ohms-At-Cursor
59
Noise
62
Set Ref (Delta Mode)
64
View Input
68
STORE and VIEW STORE
69
View Diff
71
Menu-Accessed Functions
72
TDR Questions and Answers
77
Options and Accessories
80
Option 04: YT-1 Chart Recorder
80
Option 05: Metric Default
80
Option 07: YT-1S Chart Recorder
80
Power Cord Options
80
Test Data Record Option
81
Option de
81
Accessories
81
Appendix A: Specifications
84
Electrical Characteristics
84
Table A-1: Electrical Characteristics
84
Environmental Characteristics
86
Table A-2: Environmental Characteristics
86
Certifications and Compliances
87
Physical Characteristics
88
Table A-3: Physical Characteristics
88
Appendix B: Operator Performance Checks
90
Appendix C: Operator Troubleshooting
102
Error Messages
104
Appendix D: Application Note
108
Pulse Echo Testing of Electrical Transmission Lines
108
Using the Tektronix Time-Domain Reflectometry Slide Rule
108
Terms and Symbols
108
Relationships
109
VSWR Vs. Percent Reflected Voltage
109
Return Loss (Db) Vs. Percent Reflected Voltage
110
Percent Reflected Voltage Vs. Characteristic Line Impedance
111
Percent Reflected Voltage Vs. Load Resistance
113
Characteristic Line Impedance or Load Resistance Vs. Reflection Amplitude
113
Centimeters Vs. Inches or Meters Vs. Feet
114
Dielectric Constant Vs. Velocity Factor
115
Time Vs. Short Distances, in Centimeters or Inches (any Dielectric
115
Time Vs. Long Distances, in Meters or Feet (any Dielectric
116
Glossary
118
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Tektronix 1502C Specifications
General
Brand
Tektronix
Model
1502C
Category
Measuring Instruments
Language
English
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