Jackson Labs PHASE STATION 53100A, User Manual, Page: 202 / 225

PhaseStation 53100A User’s Manual V1.04 25-Apr-2022 202
Unlike the 51XXA instruments, set referencefreq must be issued before the
measurement begins in order to provide correct frequency counts. Any changes made
during the measurement will not take effect until the next measurement begins.
- show freqdiff
- show freq
Returns the current frequency difference chart (Figure 83). Both forms ( freqdiff and
freq ) are accepted.
The values reported by this command comprise a historical “strip chart” record of the
frequency of the signal at the DUT input jack, assuming that the reference frequency is
either a multiple of 100 kHz or has been set correctly with either
set referencefreq or
/referencefreq.
These DUT frequency readings are returned in the form of fractional
frequency differences relative to the rounded input frequency reported by show inputs .
Entries for the past
n-1
seconds are displayed, ordered by age (oldest to newest), where
n
defaults to 600 seconds. The value of
n
can be configured through the use of the
/chart
command-line parameter.
Figure 83