Keithley 2651A Reference Manual page 404

Section 7: Command reference
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, .1)
Also see
i_leakage_threshold()
High-capacitance mode
i_leakage_threshold()
This KIHighC factory script
either the measured current drops below the threshold or the timeout expires.
Type TSP-Link accessible
Function No
Usage
f = i_leakage_threshold(smu, levelv, limiti, sourcedelay, measurei, measuredelay,
threshold, timeout)
f
smu
levelv
limiti
sourcedelay
measurei
measuredelay
threshold
timeout
7-96
Model 2651A High Power System SourceMeter® Instrument Reference Manual
(on page 7-96)
(on page 3-65)
(on page 5-24) function measures the current and compares it to a threshold until
Affected by
A Boolean flag; this flag will be true when the current is below the threshold,
false if threshold is not reached before timeout expires
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 before the first measurement after measure range is changed
The specified current that establishes the test limit
Amount of time (in seconds) to wait for the current to drop to threshold after all
the delays have occurred
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 will depend on the value
and type of capacitor used.
Where saved
®
instrument channel (set to smua)
Default value
2651A-901-01 Rev. A / March 2011