Tektronix KEITHLEY 2600B Series User Manual

Section 9: TSP command reference Series 2600B System SourceMeter® instrument Reference Manual
9-22 2600BS-901-01 Rev. F/August 2021
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.
Also see
bufferVar.fillmode (on page 9-25)
Reading buffers (on page 3-1)
Removing stale values from the reading buffer cache (on page 8-95)
smuX.nvbufferY (on page 9-235)
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 are 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, but does not change the
capacity of a user-defined dynamically allocated buffer.
You cannot collect source values when smuX.trigger.measure.action is set to smuX.ASYNC,
so bufferVar.collectsourcevalues must be set to 0 when the measurement action is set to be
asynchronous.
Example
smua.nvbuffer1.collectsourcevalues = 1
Include source values with readings for
dedicated reading buffer 1.

Tektronix KEITHLEY 2600B Series Specifications

General

Brand	Tektronix
Model	KEITHLEY 2600B Series
Category	Measuring Instruments
Language	English