Chad Airy asks:
Will someone please give a little of the rationale for the changes in
rev E vs F of Table III, Susceptibility Scanning.
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I suspect we need look no further than Appendix A 40.3.10.4.1
(4.3.10.4.1) Frequency scanning. Scan rate is continuously calculated
in MIL 461F and and test times have been measured instead of calculated
form assumptions. Note the portions emphasized below.
416E
... ** The scan rate for each range is calculated based on the start
frequency for the range.** The total test time to run RS103 from 1 MHz
to 18 GHz is 177 minutes. A similar calculation for a stepped scan
results in a total test time which is 2 times this value or 353 minutes.
It must be emphasized that the scan speeds should be slowed down if
the EUT response time or Q are more critical than those used to
establish the values in Table III.
461F
** Actual test times were measured in a laboratory allowing for
settling time and leveling. ** The total test time to run RS103 from 2
MHz to 18 GHz for a stepped scan is 168 minutes for one polarization.
Similarly, an analog scan would result in a total test time of
approximately 100 minutes. ** These times are based on continuously
calculating the next frequency using the present tuned frequency and the
allowed step size. **
Cortland Richmond
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