Series 2600B System SourceMeter® instrument Reference Manual Section 9: TSP command reference
2600BS-901-01 Rev. F/August 2021 9-111
i_leakage_measure()
This KIHighC factory script function performs a current leakage measurement after stepping the output voltage.
Usage
imeas = i_leakage_measure(smuX, levelv, limiti, sourcedelay, measurei, measuredelay)
Instrument channel (for example, smua refers to SMU channel A)
Voltage level to step to when this function is called
Current limit setting for the voltage step
Delay to wait before lowering the current limit for measurement
Current limit (and measure range); the current limit is lower at this level and because
high-capacitance mode is active, the measure range follows
Delay to wait after lowering the current limit before making the measurement
Details
This function causes the SMU to:
• Change its current limit to limiti with a voltage output of levelv for sourcedelay time, and
then change its current limit to measurei (that also changes the measurement range to
measurei) for measuredelay time
• When measuredelay time expires, a measurement is made and returned as imeas
When measuring leakage current:
• Charge the capacitor before calling this function (the output of the instrument is usually at a
nonzero voltage before calling this function; when measuring leakage, this function does not
charge the capacitor)
• Set levelv = 0
Example
smua.source.highc = smua.ENABLE
smua.source.levelv = 5
smua.source.output = smua.OUTPUT_ON
delay(1)
imeas = i_leakage_measure(smua, 0, 1, 300e-3, 10e-6, 0.1)
Enable high-capacitance mode. Charge the capacitor at 5 V for 1 second set by delay(1).
The parameters passed on to the i_leakage_measure() function in this example are:
smu = smua
levelv = 0 V
limiti = 1 A
sourcedelay = 300 ms
measurei = 10 µA range
measuredelay = 100 ms
The levels and delays depend on the value and type of capacitor used.
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