Tektronix Telescope 1502C Instrukcja Użytkownika Strona 91

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Appendix B: Operator Performance Checks
1502C MTDR User Manual
B3
O
N
ac 0.000 ft
O
F
F
O
F
F
O
F
F
Figure B2: Measurement Display with 3-foot Cable
3. Using the
n
o
POSITION control, measure the distance to the rising edge of
the waveform at the open end of the cable. The distance shown on the
display distance window (upper right corner of the LCD) should be from
2.87 to 3.13 feet (0.875 to 0.954 m).
O
N
ac 3.000 ft
O
F
F
O
F
F
O
F
F
Figure B3: Cursor at End of 3-foot Cable
4. Change the Vp to .30.
5. Using the
n
o
POSITION control, measure the distance to the rising edge of
the waveform at the open end of the cable. The distance shown on the
display distance window should be from 1.30 to 1.42 feet (0.396 to
0.433 m).
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