Interactive SourceMeter® Instrument Reference Manual Section 4: Source-
2450-901-01 Rev. B/September 2013 4-23
Setting up the averaging filter
Using the front panel:
1. Press the MENU key.
2. Under Measure, select Math.
3. For the Filter State, select ON or OFF.
4. For the Filter Type, select Moving or Repeat.
5. For the Filter Count, enter the number of measurements to be made for each averaged
measurement sample.
6. Select HOME to return to the operating display.
Once the filter type and count is set up, you can enable and disable the averaging filter from the
Measure Settings screen. When filtering is enabled, the FILT indicator on the Home screen is lit.
Using SCPI commands:
To set number of measurements to be averaged for current measurements, send the command:
:SENSe:CURRent:AVERage:COUNt <n>
where <n> is the number of measurements to be averaged from 1 to 100.
To set number of measurements to be averaged, send the command:
:SENSe:CURRent:AVERage:TCONtrol <type>
where <type> is the filter type, REPeat or MOVing.
To enable the selected averaging filter, send the command:
:SENSe:CURRent:AVERage:STATe ON
To set the above commands for resistance measurements, replace CURRent with RESistance. To
set the above commands for voltage measurements, replace CURRent with VOLTage.
Using TSP commands:
Before sending the filter commands, set the measurement function. The filter settings apply to the
selected measurement function.
To set number of measurements to be averaged for current measurements, send the command:
filterCount = smu.measure.filter.count
where filterCount is the number of measurements to be averaged, from 1 to 100.
To set number of measurements to be averaged, send the command:
filterType = smu.measure.filter.type
where <type> is the filter type, smu.FILTER_MOVING_AVG or smu.FILTER_REPEAT_AVG.
To enable the selected averaging filter, send the command:
smu.measure.filter.enable = smu.FILTER_ON
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