Model 2651A High Power System SourceMeter® Instrument Reference Manual
Section 7: Command reference
2651A-901-01 Rev. A / March 2011
7-95
i_leakage_measure()
(on page 5-24) function performs a current leakage measurement after stepping the
output voltage.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Function No
Usage
imeas
= i_leakage_measure(
smu, levelv, limiti, sourcedelay, measurei, measuredelay
)
imeas
The measured current
smu
System SourceMeter
®
instrument channel (set to
smua
)
levelv
Voltage level to step to when this function is called
limiti
Current limit setting for the voltage step
sourcedelay
Delay to wait before lowering the current limit for measurement
measurei
Current limit (and measure range); note the current limit is lower at this level and
because high-capacitance mode is active, the measure range will follow
measuredelay
Delay to wait after lowering the current limit before taking the measurement
Details
This function is intended to be used when high-capacitance mode is active.
When the instrument is in high-capacitance mode, this function causes the
smu
to:
•
Change its current limit to
limiti
with a voltage output of
levelv
for
sourcedelay
time, and then
changes its current limit to
measurei
(that also changes the measurement range to
measurei
) for
measuredelay
time
•
When
measuredelay
time expires, a measurement is taken and returned as
imeas
.
When measuring leakage current:
•
Charge the capacitor before calling this function (the instrument's output is usually at a non-zero voltage
prior to calling this function; when measuring leakage, this function does not charge the capacitor).
•
Set
levelv
= 0
