Section 4: Source-measure considerations
Model 2461 Interactive SourceMeter® Instrument Reference Manual
4-10
2461-901-01 A/November 2015
Using SCPI commands:
To set the number of PLCs for current measurements, send the command:
:SENSe:CURRent:NPLCycles <n>
To set the number of PLCs for resistance measurements, send the command:
:SENSe:RESistance:NPLCycles <n>
To set NPLCs for voltage measurements, send the command:
:SENSe:VOLTage:NPLCycles <n>
Where
<n>
is a value from 0.01 to 10, with 0.01 resulting in the fastest reading rates and 10 resulting
in the lowest reading noise.
For example, to set NPLC for resistance measurements to 0.5, send the command
RES:NPLC 0.5
Using TSP commands:
To set NPLC, send the command
smu.measure.nplc
. For example, to set the NPLC value to 0.5
for voltage measurements, send the commands:
smu.measure.func = smu.FUNC_DC_VOLTAGE
smu.measure.nplc = 0.5
To assign a different measure function, replace
smu.FUNC_DC_VOLTAGE
with one of the following:
•
For current measurements:
smu.FUNC_DC_CURRENT
•
For resistance measurements:
smu.FUNC_RESISTANCE