Keithley SourceMeter 2600 Series Reference Manual page 364

12-90 Instrument Control Library
smuX.source.offlimiti
Attribute The current limit used when the SMU is in output off normal mode.
Usage ivalue = smuX.source.offlimiti -- read the limits
smuX.source.offlimiti = ivalue -- write the limit
ivalue = the current limit to use
Remarks Setting this limit to lower than 1mA will not allow the contact check function to operate
when the output is off in normal mode.
Details See "Output-off
Also see smuX.source.offmode
Change the off normal limit to 10mA for SMU A:
Example
smua.source.offlimiti = 10e-3
smuX.source.offmode
Attribute Source output-off mode.
Usage
offmode = smuX.source.offmode
smuX.source.offmode = offmode
Set offmode to one of the following values:
or
0
or
1
or
2
• Reading this attribute gives the output-off mode of the source. Setting this attribute
Remarks
configures the SMU output-off mode.
• The default
volts. For the 2601/2602, the compliance to 10% of the current source range or
100uA, whichever is smaller. If the source function is voltage, the 10% compliance
will inherently be a reduction in compliance current. If the source function is current,
the 10% compliance value may be more or less than the current that was being
sourced. For the 2611/2612, the compliance to the value specified by
smuX.source.offlimiti (default 1mA).
• When offmode is set to
when the output is turned off.
• When the offmode is set to
OUTPUT_NORMAL
not be changed. If the source function was current, the current limit will be set to the
current source level or 10% of the current source range, whichever is greater.
2600S-901-01 Rev. A / May 2006
X = SMU channel (a or b)
states" in Section
X = SMU channel (a or b)
smuX.OUTPUT_NORMAL
smuX.OUTPUT_ZERO
smuX.OUTPUT_HIGH_Z
is
offmode smuX.OUTPUT_NORMAL
smuX.OUTPUT_HIGH_Z
mode does. If the source function is voltage, the current limit will
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Series 2600 System SourceMeters Reference Manual
3.
-- Reads output-off mode.
-- Writes output-off mode.
Outputs 0V when the output is turned off.
Zero the output (in either volts or current) when off.
Opens the output relay when the output is turned off.
. In this mode, the SMU will source 0
, the SMU will open the output relay
, the SMU will source 0 volts just as
smuX.OUTPUT_ZERO
Section 12 topics