Tektronix Keithley 2601B-PULSE Reference Manual

Model 2601B-PULSE System SourceMeter Instrument Reference Manual Section 11: TSP command reference
2601B-PULSE-901-01A April 2020 11-201
smua.measure.filter.type
This command sets the type of filter used for measurements when the measurement filter is enabled.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (RW)
Yes
Instrument reset
SMU reset
Recall setup
Saved setup
1 (smua.FILTER_REPEAT_AVG)
Usage
filterType = smua.measure.filter.type
smua.measure.filter.type = filterType
filterType
The filter type to use when filtering is enabled. Set to one of the following values:
▪ 0 or smua.FILTER_MOVING_AVG: Selects the moving filter
▪ 1 or smua.FILTER_REPEAT_AVG: Selects the repeat filter
▪ 2 or smua.FILTER_MEDIAN: Selects the median filter
Details
The 2601B-PULSE provides a moving average, repeating average, and median filter type.
For the repeating filter, 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 median filter uses a first-in, first-out stack. When the stack (filter count) becomes full, the reading
nearest to the middle is returned. For each subsequent conversion placed into the stack, the oldest
reading is discarded. The stack is then re-sorted, yielding a new reading. If the filter count is an even
number, the reading returned is the average of the two middle readings.
If the pulser is enabled, the repeating filter is the only available filter.
Example
smua.measure.filter.count = 10
smua.measure.filter.type = smua.FILTER_MOVING_AVG
smua.measure.filter.enable = smua.FILTER_ON
Sets the filter count to 10.
Sets the filter type to moving average.
Enables the filter.
Also see
Filters (on page 4-77)
reset() (on page 11-156)
setup.recall() (on page 11-175)
smua.measure.filter.count (on page 11-199)
smua.measure.filter.enable (on page 11-200)
smua.reset() (on page 11-222)

Tektronix Keithley 2601B-PULSE Specifications

General

Brand	Tektronix
Model	Keithley 2601B-PULSE
Category	Measuring Instruments
Language	English