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Return to
2600S-901-01 Rev. C / January 2008
Section 12: Instrument Control Library
Series 2600 System SourceMeter® Instruments Reference Manual
Also see
Example
Creates a 200 reading RAM buffer named “mybuffer2” for SMUA:
mybuffer2 = smua.makebuffer(200)
smuX.measure.analogfilter
X = SMU channel (a or b)
(Models 2635 and 2636 only)
Attribute
Controls the use of an analog filter when measuring on the lowest current ranges.
Usage
option = smuX.measure.analogfilter
-- Reads the filter setting.
smuX.measure.analogfilter = option
-- Writes the filter setting.
where option is:
0 filter off
1 filter on
Remarks
• This attribute engages an approximately 1hz analog filter across the current range
elements.
• The analog filter is only active when using the 1nA and 100pA measurement ranges.
Example
smua.measure.analogfilter = 0
- -T
urn off analog filter
.
smuX.measure.autorangeY
X = SMU channel (a or b)
Y = SMU measure function (v or i) where v = voltage, i =
current
Attribute
Measure auto range setting.
Usage
autorange = smuX.measure.autorangeY
-- Reads measure auto range.
smuX.measure.autorangeY = autorange
-- Writes measure auto range.
Set
autorange
to one of the following values:
0
or
smuX.AUTORANGE_OFF
Disables measure auto range.
1
or
smuX.AUTORANGE_ON
Enables measure auto range.
Remarks
• This attribute indicates the measurement auto range state. Its value will be
smuX.AUTORANGE_OFF
when the SMU measure circuit is on a fixed range and
smuX.AUTORANGE_ON
when it is in auto range mode.
• Setting this attribute to
smuX.AUTORANGE_OFF
puts the SMU on a fixed range. The fixed
range used will be the range the SMU measure circuit was currently using.
• Setting this attribute to
smuX.AUTORANGE_ON
puts the SMU measure circuit into auto
range mode. It will remain on its present measure range until the next measurement is
requested.
Details
See “
” in
Also see
Example
Enables voltage measure autoranging for SMU A:
smua.measure.autorangev = smua.AUTORANGE_ON
smuX.measure.autozero
X = SMU channel (a or b)
Attribute
Behavior of the SMU’s A/D internal reference measurements (autozero).
Usage
azmode = smuX.measure.autozero
-- Reads autozero.
smuX.measure.autozero = azmode
-- Writes autozero.
Set
azmode
to be one of the following values:
0
or
smuX.AUTOZERO_OFF
Autozero disabled.
1
or
smuX.AUTOZERO_ONCE
Performs autozero once, then
disables autozero.
2
or
smuX.AUTOZERO_AUTO
Automatic checking of reference and zero
measurements. An autozero is performed
when needed.