Smux.cal.date; Smux.cal.due - Keithley 2651A Reference Manual

Model 2651A High Power System SourceMeter® Instrument Reference Manual

smuX.cal.date

This attribute stores the calibration date of the active calibration set.
Type TSP-Link accessible
Attribute (RW) Yes
Usage
calDate = smuX.cal.date
smuX.cal.date = calDate
calDate
X
Details
This attribute stores the calibration date associated with the active calibration set. The calibration date can be
read at any time but can only be assigned a new value when calibration has been enabled with the
smuX.cal.unlock() function.
This attribute is stored with the active calibration set. If a different calibration set is restored, this attribute will
reflect the date stored with that set.
smuX.cal.date must be set to the date the calibration was done using the UTC time and date. The date is
stored as the number of seconds since UTC 12:00 am Jan 1, 1970.
Due to the internal storage format, smuX.cal.date is accurate to within a few minutes of the value set.
Example
smua.cal.date = os.time()
Also see
smuX.cal.adjustdate

smuX.cal.due

smuX.cal.lock()
smuX.cal.restore()
smuX.cal.save()
smuX.cal.state
smuX.cal.unlock()
Adjustment (on page B-16)
smuX.cal.due
This attribute stores the calibration due date for the next calibration.
Type TSP-Link accessible
Attribute (RW) Yes
2651A-901-01 Rev. A / March 2011
Affected by
SMU cal. restore
The active calibration set's calibration date.
Source-measure unit (SMU) channel (for example, smua.cal.date applies to
SMU channel A).
(on page 7-174)
(on page 7-175)
(on page 7-177)
(on page 7-179)
(on page 7-180)
(on page 7-180)
(on page 7-181)
Affected by
SMU cal. restore
Where saved Default value
SMU nonvolatile Initially set to factory calibration date
memory
Sets calibration date for SMU channel A to the current time
set on the instrument.
Where saved Default value
SMU nonvolatile 0
memory
Section 7: Command reference
7-175