Tektronix Keithley 2651A Reference Manual page 519

Section 7: TSP command reference
localnode.license
This attribute returns the product license agreements.
Type TSP-Link accessible
Attribute (R) Yes
Usage
license_agreement = localnode.license
license_agreement
Example
print(localnode.license)
Returns the license agreements for the Model 2651A.
Also see
None
localnode.linefreq
This attribute contains the power line frequency setting that is used for NPLC calculations.
Type TSP-Link accessible
Attribute (RW) Yes
Usage
frequency = localnode.linefreq
localnode.linefreq = frequency
frequency
Details
To achieve optimum noise rejection when performing measurements at integer NPLC apertures, set
the line frequency attribute to match the frequency (50 Hz or 60 Hz) of the ac power line.
When using this command from a remote node, replace localnode with the node reference, for
example node[5].linefreq.
When this attribute is set, the localnode.autolinefreq attribute is automatically set to false.
You can have the instrument automatically detect the ac power line frequency and set this attribute
with the line frequency detected when the instrument power is turned on by setting the
localnode.autolinefreq attribute to true.
Example 1
frequency = localnode.linefreq
7-174
Model 2651A High Power System SourceMeter® Instrument Reference Manual
Affected by Where saved
Not applicable Nonvolatile memory
The text of the license agreements
Affected by Where saved
Not applicable Nonvolatile memory
An integer representing the detected or specified line frequency of the instrument
Reads line frequency setting.
Default value
Not applicable
Default value
60 (60 Hz)
2651A-901-01 Rev. C October 2021