HP 8642A Operation And Calibration Manual page 91

Model 8642A/B
Operation
RF Frequency Sweep (cont'd)
If the desired number of steps is less than the maximum calculated
in
3a, use a sweep
time setting (in
IDS)
greater than or equal to the result of the above calculation but less
than the result of the following calculation:
(Number of Steps +2)
X
Min. Dwell Time
(in ms)
Example for Calculation #3 (Stepped Frequency Sweep)
In an 8642B, set a stepped frequency sweep from 100 to 500 MHz with 100 frequency
steps with Special Function 1 19 (Disable Settling) selected.
First select Special FUIlction 1 19:
SPCL
(I sHIFT
J
0 )
CTJ
CD CD
Calculate the required sweep time setting for the 100 frequency steps using calculation
#3:
Maximum number of steps is equal to the minimum of 1023 or:
1100 000 000
Hz -
500 000 000
Hz
1= 400 000 000
1
Hz
Since 1023 is less than 400 000 000, the maXlInum number of steps is
1023.
Minimum number of steps is equal to the minimum of:
[INTEGER OF
(2;~
- 1 )]
=
2
or
1 100 _ 000000
Hz -
500 000 000
Hz
1=
400 000 000
1
Hz
Since 2 is less than 400000000, the minimum value of steps is 2.
Therefore, it should be possible to select 100 steps
SJ[l
e that value is between the
minimum value (2) and maximum value (l023).
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