12-80 Instrument Control Library Series 2600 System SourceMeters Reference Manual
2600S-901-01 Rev. A / May 2006 Return to Section 12 topics
smuX.nvbufferY.appendmode
X = SMU channel (a or b)
Y = NV buffer (1 or 2)
Attribute Append mode for the reading buffer.
Usage
state = smuX.nvbufferY.appendmode -- Reads append mode.
smuX.nvbufferY.appendmode = state -- Writes 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
smuX.nvbufferY.basetimestamp
X = SMU channel (a or b)
Y = NV buffer (1 or 2)
Attribute Timestamp of when the first reading was stored from time of power-up.
Usage
basetime = smuX.nvbufferY.basetimestamp
Remarks
• Reading this attribute returns the timestamp (in seconds) for the first reading
(
rb[1]) stored in a buffer. The timestamp is based on the number of seconds from
power-up that the measurement was performed and stored.
• 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 timestamp for the first reading stored in buffer 1 of SMU A:
basetime = smua.nvbuffer1.basetimestamp
print(basetime)
Output: 2.369900+03
The above output indicates that the timestamp is 2369.9 seconds.
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