2600AS-901-01 Rev. B / September 2008
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19-139
Series 2600A System SourceMeter® Instruments Reference Manual
Section 19: Remote Commands
smuX.source.rangeY
X = SMU channel (a or b)
Y = SMU measure function (
v
or
i
)
Where:
v
= voltage,
i
= current
Attribute
Source range.
Default
rangei
100e-9 (2601A/2602A/2611A/2612A)
1e-9 (2635A/2636A)
rangev
100e-3 (2601A/2602A)
200e-3 (2611A/2612A/2635A/2636A)
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage
rangeval = smuX.source.rangev
-- Reads voltage source range.
smuX.source.rangev = rangeval
-- Writes voltage source range.
rangeval = smuX.source.rangei
-- Reads current source range.
smuX.source.rangei = rangeval
-- Writes current source range.
rangeval
The expected voltage or current to be sourced.
Remarks
• Reading this attribute returns the positive full-scale value of the source range the SMU is
currently using. Assigning to this attribute sets the SMU on a fixed range large enough to source
the given value. The instrument will select the best range for sourcing a value of
rangeval
.
•
smuX.source.rangeX
is primarily intended to eliminate the time required by the automatic
range selection performed by a sourcing instrument. Because selecting a fixed range will prevent
auto-ranging, an over-range condition can occur, for example, sourcing 10.0V on the Model
2601A/2602A 6.0V range, or sourcing 5.0V on the Model 2611A/2612A/2635A/2636A 2.0V
range.
Details
See
Also see
Example
Selects 1V source range for Model 2601A/2602A SMU A:
smua.source.rangev = 1
smuX.source.settling
X = SMU channel (a or b)
Attribute
The source settling mode.
Default
smuX.SETTLE_SMOOTH
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage
settle_option = smuX.source.settling -- Reads source settling option.
smuX.source.settling = settle_option -- Writes source settling option.
settle_option
The source settling mode.
Set
settle_option
to one of the following values:
0
or
smuX.SETTLE_SMOOTH
Turns off all settling operations (default).
1
or
smuX.SETTLE_FAST_RANGE
Instructs the SMU to use a faster procedure
when changing ranges.
2
or
smuX.SETTLE_FAST_POLARITY
Instructs the SMU to change polarity without going to
zero.
3
or
smuX.SETTLE_DIRECT_IRANGE
Instructs the SMU to change the amps range directly.
4
or
smuX.SETTLE_SMOOTH_100NA
Enables the use of range rampers for the 100 nA
range.
128
or
smuX.SETTLE_FAST_ALL
Enables
all
smuX.SETTLE_FAST_*
operations.