Keithley System SourceMeter 2601B, Справочное руководство

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Section 7: TSP command reference Series 2600B System SourceMeter® Instrument Reference Manual
7-182 2600BS-901-01 Rev. B / May 2013
Example
smua.abort() Terminates all overlapped operations on SMU channel A.
Also see
smuX.measure.overlappedY() (on page 7-209)
smuX.trigger.initiate() (on page 7-240)
smuX.buffer.getstats()
This function returns a specified reading buffer's statistics.
Type TSP-Link accessible Affected by Where saved Default value
Function Yes
Usage
statistics = smu X .buffer.getstats( bufferVar )
statistics
The statistical data about the data in the reading buffer
X Source-measure unit (SMU) channel (for example,
smua.buffer.getstats()
specifies SMU channel A)
bufferVar The reading buffer to process
Details
This function returns a table with statistical data about the data that is placed in the buffer.
The SMU automatically updates reading buffer statistics as data is added to the reading buffer. When the
reading buffer is configured to wrap around and overwrite older data with new data, the buffer statistics include
the data that was overwritten.
The table returned from this function is a snapshot. Although the SMU continues to update the statistics, the
table returned is not updated. To get fresh statistics, call this function again.
The
statistics
parameter has the attributes described in the following table.
Attribute When returned Description
n Always The number of data points on which the statistics are based
mean When
n
> 0 The average of all readings added to the buffer
stddev When
n
> 1 The standard deviation of all readings (samples) added to the buffer
min When
n
> 0
A table containing data about the minimum reading value added to the buffer
max When
n
> 0
A table containing data about the maximum reading value added to the buffer