Series 2600B System SourceMeter® Instrument Reference Manual
Section 7: TSP command reference
2600BS-901-01 Rev. B / May 2013
7-101
i_leakage_measure()
This KIHighC factory script 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 (for example,
smua
refers to SMU
channel A)
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 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 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, .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
µ
A range
measuredelay
= 100 ms
The levels and delays will depend on the
value and type of capacitor used.
Summary of Contents for System SourceMeter 2601B
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