Series 2600 System SourceMeters Reference Manual Instrument Control Library 12-73
Return to Section 12 topics 2600S-901-01 Rev. A / May 2006
Remarks
• There are two averaging filter types to choose from: Repeating and moving. For the
repeating filter (which is the power-on default), the stack (filter count) is filled, and
the conversions are averaged to yield a reading. The stack is then cleared, and the
process starts over.
The moving average filter uses a first-in, first-out stack. When the stack (filter count)
becomes full, the measurement conversions are averaged, yielding a reading. For
each subsequent conversion placed into the stack, the oldest conversion is
discarded. The stack is re-averaged, yielding a new reading.
•The reset function selects the repeat filter.
Details See “Filters” in Section 6.
Also see smuX.measure.filter.count, smuX.measure.filter.enable
Example
Selects the moving average filter for SMU A:
smua.measure.filter.type = smua.FILTER_MOVING_AVG
smuX.measure.interval
X = SMU channel (a or b)
Attribute Interval between multiple measurements.
Usage
interval = smuX.measure.interval -- Reads measure interval.
smuX.measure.interval = interval -- Writes measure interval.
interval Set interval (in seconds) from 0 to 1.
Remarks
• This attribute sets the time interval between groups of measurements when
smua.measure.count is set to a value greater than 1. The SMU will do its best to
start the measurement of each group when scheduled.
• If filtered measurements are being made, this interval is from the start of the first
measurement for the filtered reading to the first measurement for a subsequent
filtered reading. Extra measurements made to satisfy a filtered reading are not
paced by this interval.
• If the SMU cannot keep up with the interval setting, measurements will be made as
fast as possible.
•The reset function sets the measure interval to 0.
Details See “Triggering” in Section 4.
Also see smuX.measure.overlappedY, smuX.measure.Y
Example
Sets measure interval for SMU A:
smua.measure.interval = 0.5
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