Appendix B: Operator Performance Checks
B–12
1502C MTDR User Manual
If the instrument failed Jitter or Risetime checks, it is probably still adequate for
all but extremely precise distance measurements. If it failed the Horizontal Scale
check, you should not use the instrument until the cause of the failure has been
identified and corrected.
All of the previous checks only test the major functional blocks of the instrument
that could prevent you from being able to make measurements. It is possible for
the front-panel controls or the LCD to have problems that would interfere with
controlling or displaying measurements. Most problems of this type would
become evident as you perform the checks. If you suspect a problem of this
nature, you should have the instrument checked by a qualified service technician,
using the diagnostics in the 1502C Service Manual.
If the instrument passed all of the previous checks, it is ready for use.
Conclusions
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