Operating Instructions
1–12
1503C MTDR User Manual
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ac
3.00 ft
Figure 1–6: Vp Set at .99, Cursor Less Than Reflected Pulse (Setting Too High)
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ac
3.00 ft
Figure 1–7: Vp Set at .66, Cursor on Rising Edge of Reflected Pulse (Set Correctly)
Cable Test Procedure
Be sure to read the previous paragraphs on Vp.
1. Set the 1503C controls:
POWER
On
CABLE
Cable to BNC
IMPEDANCE
50
NOISE FILTER
1 avg
DIST/DIV
(see below)
Vp
(per cable)
PULSE WIDTH
(per cable)
2. If you know approximately how long the cable is, set the DIST/DIV
appropriately (e.g., 20-ft cable would occupy four divisions on the LCD if
5
ft/div was used). The entire cable should be displayed.
Distance to the Fault
Summary of Contents for 1503C
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Page 92: ...Appendix A Specifications A 6 1503C MTDR User Manual...
Page 104: ...Appendis B Operator Performance Checks B 12 1503C MTDR User Manual...
Page 122: ...Glossary Glossary 6 1503C MTDR User Manual...
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