Operating Instructions
1–24
1503C MTDR User Manual
b. Turn NOISE FILTER to VERT SET REF.
c.
Adjust VERT SCALE to obtain 0.00 dB.
d. Push STORE.
e.
Turn NOISE FILTER to desire filter setting.
Because dB is actually a ratio between the energy sent out and the energy reflected
back, using VERT SET REF does not affect the dB difference measured.
NOTE
. Do not use Auto Pulse Width when making measurements in VERT SET REF.
Auto Pulse Width changes the pulse width at 100, 500, and 5000 feet. If the pulse
width changes while in VERT SET REF, it could result in an erroneous reading.
Manually controlling the pulse width assures the pulse width remains the same for
both the incident and reflective pulses.
Additional Features (Menu Selected)
The 1503C will capture and store waveforms on an ongoing basis. This is useful
when the cable or wire is subjected to intermittent or periodic conditions. The 1503C
will monitor the line and display any fluctuations on the LCD.
1. Attach the cable to the 1503C front-panel CABLE connector.
2. Push MENU to access the main menu.
3. Scroll to Setup Menu and push MENU again.
4. Scroll to Acquisition Control Menu and push MENU again.
5. Scroll to Max Hold is: Off and push MENU again. This line will change to Max
Hold is: On. The monitoring function is now ready to activate.
6. Repeatedly push MENU until the instrument returns to normal operation.
O
N
ac
0.00 ft
O
N
Figure 1–27: Waveform Viewed in Normal Operation
Max Hold
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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