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Section 7: TSP command reference
Model 2657A High Power System SourceMeter® Instrument Reference Manual
7-224
2657A-901-01 Rev. B/December 2012
smuX.source.rangeY
This attribute contains the source range.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (RW)
Yes
SMU reset
Instrument reset
Recall setup
Saved setup
Current: 1e-9 (1 nA)
Voltage: 200 (200 V)
Usage
rangeValue
= smu
X
.source.range
Y
smu
X
.source.range
Y
=
rangeValue
rangeValue
Set to the maximum expected voltage or current to be sourced
X
Source-measure unit (SMU) channel (for example,
smua.measure.rangev
applies to SMU channel A)
Y
SMU source function (
v
= voltage,
i
= current)
Details
This attribute contains a value that sets the source-measure unit (SMU) to a fixed range large enough to source
the value. When read, the attribute contains the range the instrument is presently on when in autorange.
Assigning a value to this attribute sets the SMU to a fixed range large enough to source the assigned value. The
instrument selects the best range for sourcing a value of
rangeValue
.
Reading this attribute returns the positive full-scale value of the source range the SMU is currently using. With
source autoranging enabled, the output level controls the range. Querying the range after the level is set returns
the range the instrument chose as appropriate for that source level.
This attribute is primarily intended to eliminate the time required by the automatic range selection performed by a
sourcing instrument. Because selecting a fixed range prevents autoranging, an overrange condition can occur.
Example
smua.source.rangev = 200
Selects the 200 V source range for SMU channel A.
Also see
(on page 7-211)
(on page 7-212)
smuX.source.settling
This attribute contains the source settling mode.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (RW)
Yes
SMU reset
Instrument reset
Recall setup
Not saved
0 (smuX.SETTLE_SMOOTH)
Содержание 2657A
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