Command Usage - Keithley 2651A Reference Manual

Section 7: Command reference
5. Where saved. Indicates where the command settings reside once they are used on an
instrument. Options include:
•
Not saved: Command is not saved anywhere and must be typed each time you use it.
•
Nonvolatile memory: Storage area in the instrument where information is saved when the instrument
is turned off.
•
System settings
6. Default value: Lists the default value or constant for the command. The parameter values are
defined in the Usage or Details sections of the command description.

Command usage

The Usage section of the instrument control command listing shows how to properly structure the
command. Each line in the Usage section is a separate variation of the command usage; all possible
command usage options are shown here.
Figure 94: Command usage section
1
Structure of command usage
User-defined
2
parameter
1. Structure of command usage: Shows how the parts of the command should be organized.
2. User-defined parameters: Indicated by italics. For example, for the function
beeper.beep(duration, frequency), replace duration with the number of seconds and
frequency with the frequency of the tone. For example, beeper.beep(2, 2400) generates a
two-second, 2400 Hz tone.
If there are optional parameters, they must be entered in the order presented in usage. You cannot
leave out any parameters that precede the optional parameter, but you can leave off subsequent
optional parameters. Optional parameters are shown as separate lines in usage, showing each
permutation of the command. For example:
text = display.gettext()
text = display.gettext(embellished)
text = display.gettext(embellished, row)
text = display.gettext(embellished, row, columnStart)
text = display.gettext(embellished, row, columnStart, columnEnd)
3. Parameter value options: Displayed in order, from left to right, as they are presented in the
Usage example.
7-6
Model 2651A High Power System SourceMeter® Instrument Reference Manual
Disable the beeper (beeper.OFF or 0)
Enable the beeper (beeper.ON or 0)
NOTE
3
Parameter value options
2651A-901-01 Rev. A / March 2011