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Appendis B: Operator Performance Checks
1503C MTDR User Manual
B–5
If the instrument fails this check, it may still be usable for measurements of large
faults that do not require a lot of gain. A great deal of noise reduction can be made
using the NOISE FILTER control. Send your instrument to be serviced when
possible.
1. Set the PULSE WIDTH to 2 ns. Using the
n
o
POSITION control and VERT
SCALE control, set the gain to 57 dB with the waveform centered vertically in
the display.
O
N
bat
50600.00 ft
O
F
F
O
F
F
O
F
F
Figure B–8: Waveform with Gain at 57 dB
2. Press MENU.
3. Using the
n
o
POSITION control, select Diagnostics Menu.
4. Press MENU again.
5. Using the
n
o
POSITION control, select Service Diagnostic Menu.
6. Press MENU again.
7. Using the
n
o
POSITION control, select Noise Diagnostics.
8. Press MENU again and follow the instructions on the display.
9. Exit from Noise Diagnostics, but do not exit from the Service Diagnostic Menu
yet.
If the instrument fails this check, it should not be used for loss or impedance
measurements. Send it to be serviced when possible.
1. In the Service Diagnostic Menu, select the Offset/Gain Diagnostic and follow
the directions on the display.
3. Noise Check
4. Offset/Gain Check
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...
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