Tektronix Telescope 1502C Manuel d'utilisateur télécharger pdf (Page 106)

Appendix C: Operator Troubleshooting

C–6

1502C MTDR User Manual

errors, which means that no measurements should be made with this instrument

before it is repaired.

The instrument searches for a point on the leading edge of the pulse that is on the

cable inside the instrument (about 10% up the pulse). This message indicates that

the search failed. This could be because the pulse is not there, or because the

sampler or gain circuitry is broken, or even because the timebase is not function-

ing properly.

The instrument must be sent to service for repair.

Meanings:

Remedies:

1 2 ... 101 102 103 104 105 106 107 108 109 110 111 ... 125 126

User Manual 1
070-7169-05 1
WARRANTY 3
Contacting Tektronix 4
Table of Contents 5
List of Figures 7
List of Tables 10
General Information 11
Installation and Repacking 12
General Safety Summary 15
Operating Instructions 19
Care of the Battery Pack 20
Battery Charging 21
Low Battery 21
Low Temperature 22
Operation 22
Tektronix 23
Front-Panel Controls 25
Menu Selections 26
Test Preparations 30
Cable Test Procedure 32
Reflection Coefficient 35
Measurements 35
Return Loss 36
Ohms-at-Cursor 37
Using VIEW INPUT 38
How to Store the 38
Waveform 38
Using VIEW STORE 39
Using VIEW DIFF 39
Using Horizontal Set 42
Reference 42
0.000 ft 43
Using Vertical Set 44
Vertical Compensation for 44
Higher Impedance Cable 44
Max Hold 47
Pulse On/Off 48
Single Sweep 49
Operator Tutorial 51
Getting Started 52
The Waveform Up Close 55
Front-panel 56
Connector 56
A Longer Cable 57
Set Ref (Delta Mode) 63
VERT SET REF 65
VIEW INPUT 67
STORE and VIEW STORE 68
VIEW DIFF 70
Menu-Accessed Functions 71
Pulse On / Off 73
TDR Questions and Answers 76
Options and Accessories 79
Test Data Record Option 80
Option DE 80
Accessories 80
Appendix A: Specifications 83
Environmental Characteristics 85
(continued next page) 86
Physical Characteristics 87
Equipment Required 89
Getting Ready 89
Power On 89
Metric Instruments 89
1. Horizontal Scale 90
(Timebase) Check 90
2. Vertical Position 93
(Offset) Check 93
3. Noise Check 94
5. Sampling Efficiency 95
6. Aberrations Check 96
7. Risetime Check 97
8. Jitter Check 99
Conclusions 100
Operator Troubleshooting 102
Error Messages 103
Meanings: 106
Remedies: 106
Appendix D: Application Note 107
Relationships 108
(50 or 75 ohm Source) 110
(as seen on your TDR) 112
(any dielectric) 114
1502C MTDR User Manual 116
Glossary 117
RAM / ROM, 1-10 124

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Tektronix Telescope 1502C Manuel d'utilisateur Page 106

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