4 Remote Interface Reference
162 Keysight 34420A User’s Guide
Input Filter Commands
See also page 68 in Chapter 3.
Using the input filters from the remote interface is not recommended. To use the
filters with the remote interface be aware of the following:
– The digital filter is a moving average (boxcar) filter. The filter rate sets the
number of readings that will be averaged. A reading is taken and included in
the average with each trigger. You must, therefore, supply enough triggers to
fill up the average before the filter will settle. If your measurement requires
averaging readings, use the math operations (Stats) instead of the digital filter
(see page 164).
– The digital filter average may reset, based upon the measurement value (see
page 70). You must use the STATus:OPERation:CONDition register to
determine if the filter is settled with each reading taken.
– The analog filter significantly slows the reading rate.
The input filters are disabled following a remote interface reset (*RST) or preset
(SYStem:PREset).
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