1-16 Return to Section Topics 2400S-903-01 Rev. E / September 2011
Section 1: Introduction Series 2400 SourceMeter® Quick Start Guide
Measure-only example — Table 9 shows a typical command sequence to measure current only.
Auto ohms example — Table 10 shows a typical command
sequence to use auto ohms to
measure resistance. Note that 4-wire sensing is used for this example. See Basic connections for
details on sensing.
Manual ohms example — Table 11 shows a typical command sequence to use manual ohms to
measur
e resistance. This example uses auto range for current measurements. If you were to use
manual ranging, you should select the lowest possible current range for the measurement. For
example, to measure a 1MΩ resistor with the source set to 2V, the 1µA measure range should be
sele
cted
to achieve the best accuracy (2V/1µA = 2MΩ). Note that 2-wire sensing is used for this
ex
ample. See Basic connections for details on sensing.
Table 1-8
Command sequence for source-measure example
Command* Comments
*RST Restore GPIB defaults (one-shot source-measure
mode).
:SOUR:FUNC VOLT Select voltage source function.
:SOUR:VOLT:MODE FIX Select fixed voltage source mode.
:SOUR:VOLT:RANG 20 Select 20V source range.
:SOUR:VOLT:LEV 10 Set source output level to 10V.
:SENS:FUNC “CURR” Select current measurement function.
:SENS:CURR:PROT 10e-3 Set compliance limit to 10mA.
:SENS:CURR:RANG 10e-3 Select the 10mA measurement range.
:OUTP ON
Turn the output on.
:READ? Trigger and acquire one data string.
*SourceMeter must be addressed to talk after sending :READ? to trigger and acquire data.
Table 1-9
Command sequence for measure current only example
Command* Comments
*RST Restore GPIB defaults (one-shot measure mode).
:SOUR:FUNC VOLT Select voltage source function.
:SOUR:VOLT:MODE FIX Select fixed voltage source mode.
:SOUR:VOLT:RANG 0.2 Select 200mV source range.
:SOUR:VOLT:LEV 0 Set source output level to 0.000mV.
:SENS:FUNC “CURR” Select current measurement function.
:SENS:CURR:PROT 100e-3 Set compliance limit to 100mA.
:SENS:CURR:RANG 10e-3 Select the 10mA measurement range.
:OUTP ON
Turn the output on.
:READ? Trigger and acquire one data string.
*SourceMeter must be addressed to talk after sending :READ? to trigger and acquire data.
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