Tektronix 1503C, User Manual, Page: 103 / 128

Appendis B: Operator Performance Checks
1503C MTDR User Manual
B–11
41. Increase VERT SCALE to 30.00 dB.
42. Using the
n o
POSITION control, verify that the aberrations are less than four
divisions high out to 3000 feet (915.00 m)
O
F
F
O
F
F
O
F
F
O
N
ac
3000.00 ft
Figure B–17: Aberrations Less Than Four Divisions Out to
3000.00 ft
If the instrument failed Aberrations or Sampling Efficiency checks, it is probably
still adequate for all but extremely minor fault 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 1503C Service Manual.
If the instrument passed all of the previous checks, it is ready for use.
If your instrument is equipped with Option 06 (Ethernet), refer to the Calibration
section of the 1503C Service Manual.
Conclusions