Keithley System SourceMeter 2601B, Справочное руководство

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Series 2600B System SourceMeter® Instrument Reference Manual Section 3: Functions and features
2600BS-901-01 Rev. B / May 2013 3-17
Buffer status
The buffer reading status attribute includes the status information as a numeric value; see the
following table for values. For example, to access status information for the second element of SMU
channel A buffer 1, use the following command:
stat_info = smua.nvbuffer1.statuses[2]
Buffer status bits
Bit Name Hex value Description
B0 Reserved 0x01 Reserved for future use
B1 Overtemp 0x02 Over temperature condition
B2 AutoRangeMeas 0x04 Measure range was autoranged
B3 AutoRangeSrc 0x08 Source range was autoranged
B4 4Wire 0x10 4-wire (remote) sense mode enabled
B5 Rel 0x20 Rel applied to reading
B6 Compliance 0x40 Source function in compliance
B7 Filtered 0x80 Reading was filtered
Dynamic reading buffers
Reading buffers can also be allocated dynamically. Dynamic reading buffers are created and
allocated with the
smu X .makebuffer( n )
command, where
n
is the number of readings the buffer
can store. For example, the following command allocates a reading buffer named
mybuffer
that can
store 100 readings:
mybuffer = smua.makebuffer(100)
Allocated reading buffers can be deleted as follows:
mybuffer = nil
Dynamically allocated reading buffers can be used interchangeably with the
smu X .nvbuffer Y
buffers that are described in Dedicated reading buffer designations (on page 3-11).