Tektronix 1503C, Руководство пользователя, Страница: 38 / 128

Operating Instructions
1–22
1503C MTDR User Manual
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F
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ac 3.00 ft
Figure 1–23: Cursor Moved to End of Three-Foot Lead-in Cable
3. Push STORE.
4. Turn the NOISE FILTER control to 1 avg. The instrument is now in HORZ SET
REF, or delta mode. The distance window should now read 0.00 ft. As the cursor
is scrolled down the cable, the distance reading will now be from the new zero
reference point.
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F
F
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F
F
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N
ac
0.00 ft
D
Figure 1–24: Cursor Moved to End of Three-Foot Lead-in Cable
NOTE . Vp changes will affect where the reference is set on the cable. Be sure to set
the Vp first, then set the delta to the desired location.
5. To exit HORZ SET REF, use the following procedure:
a. Turn the NOISE FILTER control to HORZ SET REF.
b. Turn DIST/DIV to 1 ft/div. If the distance reading is extremely high, you
might want to use a higher setting initially, then turn to 1 ft/div for the next
adjustment.
c. Turn the
n o
POSITION control until the distance window reads 0.00 ft.