Keithley 2600a series, Reference Manual, Page: 450 / 696

19-128 Return to Section Topics 2600AS-901-01 Rev. B / September 2008
Section 19: Remote Commands Series 2600A System SourceMeter® Instruments Reference Manual
smuX.nvbufferY.collecttimestamps
X = SMU channel (a or b)
Y = NV buffer (1 or 2)
Attribute Timestamp collection for the buffer.
Default 0
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage
state = smuX.nvbufferY.collecttimestamps -- Reads collection state.
smuX.nvbufferY.collecttimestamps = state -- Writes collection state.
Set
state
to one of the following values:
0
Timestamp collection disabled (off).
1
Timestamp collection enabled (on).
Remarks • Assigning a
state
value to this attribute enables or disables the storage of timestamps.
Reading this attribute returns the state of timestamp collection.
• When on, timestamps will be stored with readings in the buffer. This requires four extra bytes of
storage per reading. The first reading is time stamped at zero seconds. Subsequent readings
are time stamped relative to the time storage was started.
• This value, off or on, can only be changed when the buffer is empty. The buffer can be emptied
using the
smuX.nvbufferY.clear
function.
Details See Reading buffers in this section and in Section 7 .
Also see
smuX.measure.overlappedY , smuX.measure.Y , smuX.nvbufferY
Example Include timestamps with readings for SMU A Buffer 1:
smua.nvbuffer1.collecttimestamps = 1
smuX.nvbufferY.n
X = SMU channel (a or b)
Y = NV buffer (1 or 2)
Attribute Number of readings in the buffer.
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage
bufferreadings = smuX.nvbufferY.n
bufferreadings
Returns the number of readings stored in the buffer.
Remarks • Reading this attribute returns the number of readings that are stored in the buffer.
• This is a read-only attribute.
Details See Reading buffers in this section and in Section 7 .
Also see
smuX.measure.overlappedY , smuX.measure.Y , smuX.nvbufferY
Example Read the number of readings stored in SMU A Buffer 1:
bufferreadings = smua.nvbuffer1.n
print(bufferreadings)
Output:
1.02
The above output indicates that there are 125 readings stored in the buffer.