![background image](http://html2.mh-extra.com/html/keithley/interactive-sourcemeter-2450/interactive-sourcemeter-2450_reference-manual_4033478176.webp)
Model 2450 Interactive SourceMeter® Instrument Reference Manual
Section 3: Functions and features
2450-901-01 Rev. B/September 2013
3-31
Using TSP commands:
The following attributes are available for each reading buffer (for example,
rb.dates
accesses dates
for reading buffer
rb
, and the number of readings in the reading buffer is accessed as
rb.n
).
Attribute
Description
bufferVar
.n
This attribute contains the number of readings in the specified
buffer. See
(on page 8-23).
bufferVar
.readings
This attribute contains the readings stored in a specified
reading buffer. See
(on page 8-24).
bufferVar
.dates
This attribute contains the dates of readings stored in the
reading buffer. See
(on page 8-18).
bufferVar
.statuses
This attribute contains the status values of readings in the
reading buffer. See
(on page 8-33).
bufferVar
.formattedreadings
This attribute contains the stored readings formatted as they
appear on the front-panel display. See
(on page 8-20).
bufferVar
.sourceformattedvalues
This attribute contains the source levels formatted as they
appear on the front-panel display when the readings in the
reading buffer were acquired. See
bufferVar.sourceformattedvalues
(on page 8-28).
bufferVar
.sourcevalues
This attribute contains the source levels being output when
readings in the reading buffer were acquired. See
(on page 8-32).
bufferVar
.sourcestatuses
This attribute contains the source status conditions of the
instrument for the reading point.
bufferVar
.times
This attribute contains the time when the instrument made the
readings. See .
bufferVar
.timestamps
This attribute contains the timestamps of readings stored in
the reading buffer. See
(on page 8-35).
bufferVar
.relativetimestamps
This attribute contains the timestamps, in seconds, when each
reading occurred relative to the timestamp of reading buffer
(on page 8-
bufferVar
.sourceunits
This attribute contains the units of measure of the source. See
(on page 8-30).
bufferVar
.seconds
This attribute contains the nonfractional seconds portion of the
timestamp when the reading was stored in UTC format. See
(on page 8-26).
bufferVar
.fractionalseconds
This attribute contains the fractional portion of the timestamp
(in seconds) when each reading occurred. See
(on page 8-21).
Reading buffer time and date values
Time and date values are represented as a number of UTC seconds since 12:00 a.m. Jan. 1, 1970.
Use the following commands to return values in the following formats:
•
(on page 8-34)
•
(on page 8-26)
•
Month, day, year, format, or to access the timestamp table:
(on page 8-18)