Section 7: TSP command reference
2606B System SourceMeter® Instrument Reference Manual
7-20
2606B-901-01 Rev. B / May 2018
To avoid this, you can include explicit calls to the
bufferVar
.clearcache()
function to remove
stale values from the reading buffer cache.
Example
smua.nvbuffer1.clearcache()
Clears the reading buffer cache for
dedicated reading buffer 1 (source-measure
unit (SMU) channel A).
Also see
(on page 7-22)
Removing stale values from the reading buffer cache
(on page 6-56)
(on page 7-209)
bufferVar.collectsourcevalues
This attribute sets whether or not source values are stored with the readings in the buffer.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (RW)
Yes
Not applicable
See
Details
0 (disabled)
Usage
state
=
bufferVar
.collectsourcevalues
bufferVar
.collectsourcevalues =
state
state
Source value collection status; set to one of the following:
0
: Source value collection disabled (off)
1
: Source value collection enabled (on)
bufferVar
The reading buffer; can be a dynamically allocated buffer (user-defined), or a
dedicated reading buffer (such as
smua.nvbuffer1
)
Details
Assigning a value to this attribute enables or disables the storage of source values. Reading this
attribute returns the state of source value collection. This value can only be changed with an empty
buffer. Empty the buffer using the
bufferVar
.clear()
function.
For dedicated reading buffers, all buffer attributes are saved to nonvolatile memory only when the
reading buffer is saved to nonvolatile memory.
When on, source values will be stored with readings in the buffer. This requires four extra bytes of
storage for each reading. Turning on additional collection items, such as source values (this attribute)
and timestamps, decreases the capacity of a dedicated reading buffer (for example,
smua.nvbuffer1
), but does not change the capacity of a user-defined dynamically allocated buffer.
Example
smua.nvbuffer1.collectsourcevalues = 1
Include source values with readings for
dedicated reading buffer 1 (source-measure
unit (SMU) channel A).