HP 8642A Operating Manual page 81

Operation
Model 8642A/B
RF Frequency Sweep (cont'd)
2) Calculate the sweep step size automatically selected.
The result can be a non-integer, but actual frequency points are truncated to 1 Hz (the
total number of points is equal to the total number of steps + 1).
The sweep step size is the maximum of:
1 Hz
or
| Start Frequency (in Hz) - Stop Frequency (in Hz) |
1023
or
| Start Frequency (in Hz) - Stop Frequency (in Hz) \
INTEGER OF
Sweep Time (in ms)
Min. Dwell Time (in ms)
3) Calculate a sweep time that could be selected for a desired number of steps.
3a) First you must ensure that the desired number of steps is between the maximum
and minimum number of steps possible.
The maximum number of frequency steps is equal to the minimum of:
1023
or
| Start Frequency (in Hz) — Stop Frequency (in Hz) \
_ _
The minimum number of frequency steps equals the minimum of:
INTEGER OF
275 ms
Min. Dwell Time (in ms)
or
| Start Frequency (in Hz) — Stop Frequency (in Hz) \
1 Hz
3b) If the desired number of steps is equal to the maximum, use a sweep time setting (in
ms) equal to or greater than the result of the following equation:
(Number of Steps +1) X Min. Dwell Time (in ms)
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