Keithley 2600a series, Reference Manual, Page: 447 / 696

2600AS-901-01 Rev. B / September 2008 Return to Section Topics 19-125
Series 2600A System SourceMeter® Instruments Reference Manual Section 19: Remote Commands
smuX.nvbufferY
X = SMU channel (a or b)
Y = NV buffer (1 or 2)
Attribute Dedicated reading buffers.
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage
buffer = smuX.nvbufferY
buffer
The dedicated reading buffer.
Remarks • There are two reading buffers:
smuX.nvbuffer1
and
smuX.nvbuffer2
.
• All routines that return measurements can return them in reading buffers. Overlapped
measurements are always returned in a reading buffer. Synchronous measurements return
either a single-point measurement or can be stored in a reading buffer if passed to the
measurement command.
• The dedicated reading buffers can be saved to internal nonvolatile memory to retain data
between power cycles.
Details See Reading buffers in this section and in Section 14 .
Also see
smuX.makebuffer , smuX.measure.overlappedY , smuX.measure.Y
Example Store current readings from SMU A into Buffer 1:
smua.measure.overlappedi(smua.nvbuffer1)
smuX.nvbufferY.appendmode
X = SMU channel (a or b)
Y = NV buffer (1 or 2)
Attribute Append mode for the reading buffer.
Default 0
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage
state = smuX.nvbufferY.appendmode -- Reads append mode.
smuX.nvbufferY.appendmode = state -- Writes append mode.
state
The reading buffer append mode.
Set
state
to one of the following values:
0
Append mode off New measure data overwrites the previous buffer content.
1
Append mode on Appends new measure data to the present buffer content.
Remarks • Assigning to this attribute enables or disables the buffer append mode.
• With append mode on, the first new measurement will be stored at
rb[n+1]
, where
n
is the
number of readings stored in the buffer.
Details See Reading buffers in this section and in Section 7 .
Also see
smuX.measure.overlappedY , smuX.measure.Y , smuX.nvbufferY
Example Append new readings for SMU A to contents of Buffer 1:
smua.nvbuffer1.appendmode = 1