Operator Tutorial
1503C MTDR User Manual
2–7
O
F
F
O
F
F
O
F
F
O
N
ac
406.80 ft
Cursor
Cable Scrolling
In this direction
auto
Figure 2–9: Scrolling Down the Cable
NOTE
. When testing a long cable, it is helpful to set DIST/DIV to a higher setting
when scrolling to either end of the cable. For example, if testing a 5,000-ft cable,
it would be very tiring to scroll the entire length from end to end at 1 ft/div.
5. Turn the
n
o
POSITION control to return the cursor to the rise of the reflected
pulse.
6. Increase DIST/DIV to 100 ft/div.
7. Set PULSE WIDTH to 2 ns. Notice that the pulse has nearly disappeared. Nearly
all of the electrical energy set through the cable is absorbed.
O
N
ac
456.00 ft
O
F
F
O
F
F
O
F
F
Figure 2–10: Pulse Width at 2 ns
8. Set PULSE WIDTH to 10 ns. The pulse height increases because there is more
energy being sent through the cable.
Summary of Contents for 1503C
Page 4: ......
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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