Bird Technologies SA-6000XT-Manual - Manual (Page 44)

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b. Do one of the following:

If the cable’s velocity of propagation and its length are known but they
are not on one of the tables, either enter the max distance into the
Site Analyzer or determine the approximate frequency span required
by using the following equation:

If a span greater than the current settings permit is entered, the span
will be set to the maximum allowable value.
Note: The center frequency is the center of the antenna’s frequency
range.
Note: To set the max distance, follow the numbered steps in
Figure 20 on page 28.
5. Press the Config key.
6. Press the Freq softkey.
7. For both Span and Center, scroll to select the item (Span or Center).
8. Enter the Span value determined from the table earlier.
9. Enter the value for the center frequency as determined in instruction Step 3.
10. Do one of the following:

After entering the Span value, press Enter.

After entering the Center value, press Enter.
11. Enable the Fault Location Mode. See “Selecting Fault Location Mode” on
page 26.
Figure 20 Setting the Frequency Span and the Center Frequency
where (# points - 1) is 237, 474, or 948
Freq Span = 150
  relative velocity (%) # points 1 –    
test length (m)
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