Keithley 2651A Reference Manual page 403

Model 2651A High Power System SourceMeter® Instrument Reference Manual
i_leakage_measure()
This KIHighC factory script
output voltage.
Type TSP-Link accessible
Function No
Usage
imeas = i_leakage_measure(smu, levelv, limiti, sourcedelay, measurei, measuredelay)
imeas
smu
levelv
limiti
sourcedelay
measurei
measuredelay
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
2651A-901-01 Rev. A / March 2011
(on page 5-24) function performs a current leakage measurement after stepping the
Affected by
The measured current
System SourceMeter
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); note the current limit is lower at this level and
because high-capacitance mode is active, the measure range will follow
Delay to wait after lowering the current limit before taking the measurement
Where saved
®
instrument channel (set to smua)
Section 7: Command reference
Default value
7-95