Keithley 2600a series User Manual

2600AS-901-01 Rev. B / September 2008 Return to Section Topics 19-117
Series 2600A System SourceMeter® Instruments Reference Manual Section 19: Remote Commands
smuX.measure.filter.type
X = SMU channel (a or b)
Attribute Type of filter for measurements.
Default
0 (2601A/2602A/2611A/2612A)
1 (2635A/2636A)
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage type = smuX.measure.filter.type -- Reads filter type.
smuX.measure.filter.type = type -- Writes filter type.
type The filter type.
Set type to one of the following values:
0 or smuX.FILTER_MOVING_AVG Selects the moving average filter.
1 or smuX.FILTER_REPEAT_AVG Selects the repeat filter.
2 or smuX.FILTER_MEDIAN Selects the median filter.
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 median filter uses a first-in, first-out stack. When the stack (filter count) becomes full, the
“middle-most” reading 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.
• 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.highcrangedelayfactor
X = SMU channel (a or b)
Attribute The multiplier for delays during range change when High-C mode is active.
Default 10
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage smuX.measure.highcrangedelayfactor = delayfactor
delayfactor = smuX.measure.highcrangedelayfactor
delayfactor The delay factor.
Remarks • The delay factor must be set to a value between 1 and 99.
Details For more information on High-C mode, see Section 5.
Also see smuX.source.highc
Example Set the delay factor for SMU A to 5:
smua.measure.highcrangedelayfactor = 5

Keithley 2600a series Specifications

General

Brand	Keithley
Model	2600a series
Category	Measuring Instruments
Language	English