Tektronix Telescope 1502C Manuel d'utilisateur télécharger pdf (Page 46)

Operating Instructions

1–28

1502C MTDR User Manual

ac 1.840 ft

Figure 1–29: Cursor Moved to Desired Position

The instrument is now set to measure reflections in millirho relative to the

sample cable impedance.

To measure reflections on a 50 W cable, the VERT SET REF must be reset.

8. To exit VERT SET REF, use the following procedure:

a. Turn NOISE FILTER to VERT SET REF.

b. Adjust VERT SCALE to obtain an incident pulse height of two

divisions.

c. Push STORE.

d. Turn NOISE FILTER to desire filter setting.

The instrument can be turned off and back on to default to the two division pulse

height.

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 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 46

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