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Operating Instructions
1–14
1503C MTDR User Manual
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20.00 ft
Open
Figure 1–10: Open in the Cable
3. To find the distance to the fault or end of the cable, turn the
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POSITION
control until the cursor rests on the leading edge of the rising or falling reflected
pulse (see Figure 1–10). Read the distance in the distance window in the upper
right corner of the display.
A more thorough inspection might be required. This example uses a longer cable:
4. When inspecting a 455-foot cable, a setting of 100 ft/div allows a relatively fast
inspection. If needed, turn VERT SCALE to increase the gain. The higher the
gain, the smaller the faults that can be detected. If noise increases, increase the
NOISE FILTER setting.
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455.00 ft
Figure 1–11: 455-ft Cable
5. Change DIST/DIV to 20 ft/div. The entire cable can now be inspected in detail
on the LCD. Turn the
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POSITION control so the cursor travels to the far right
side of the LCD. Keep turning and the cable will be “dragged” across the
display.
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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