Section 7: Command reference Model 2651A High Power System SourceMeter® Instrument Reference Manual
7-172 2651A-901-01 Rev. A / March 2011
Example
smua.abort()
Terminates all overlapped operations on SMU channel A.
Also see
smuX.measure.overlappedY() (on page 7-201)
smuX.trigger.initiate()
(on page 7-234)
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 = smuX.buffer.getstats(bufferVar)
statistics
The reading buffer's statistics
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 placed in the buffer.
The SMU will automatically update 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 will
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 will not be updated. To get fresh statistics, call this function again.
The statistics parameter has the following attributes:
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
If n equals zero (0), all other attributes will be nil because there is no data to base any statistics on. If n equals
1, the stddev attribute will be nil because the standard deviation of a sample size of 1 is undefined.
To Next Page
Loading...
Need help?
General
