Calibration
1502C MTDR Service Manual
6–9
O
F
F
O
N
ac 0.108 ft
O
N
O
N
move cursor to reference and Press STORE
Figure 6–12: Cursor on Rising Edge of Pulse
9. Rotate NOISE FILTER back to 1 avg.
10. Press STORE. The front panel reference has now been set.
O
F
F
O
N
ac 0.000 ft
n
O
F
F
O
F
F
Figure 6–13: Cursor at 0.000 ft
n
11. Rotate the
n
o
POSITION control to the rising edge of the waveform, one
graticule above the centerline. This measures the distance from the set point to
the end of the 3-ft cable. The measured distance should be between 2.87 and
3.13 feet.
O
F
F
O
N
ac
O
F
F
O
F
F
2.988 ft
n
Figure 6–14: Cursor on Rising Edge of Pulse
12. Remove the 3–ft cable and connect the 50
W
terminator.
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