Fluke PM-3370B, PM-3380B Customizing settings, CONFigureAC, SENSeAVERage on, SENSeAVERageCOUNT

USING THE COMBISCOPE INSTRUMENTS 3 - 13

3.3.4Customizing settings

Often, you need more precise control of the measurements than possible with the MEASure? query. The combination of CONFigure and READ? is provided to allow you to program one or more settings that are vital to your application. Executing this sequence of instructions is equivalent to sending MEASure? For setting up the instrument, CONFigure uses the same measure functions and parameters as MEASure?. The CONFigure command does the instrument setup portion of MEASure?. The READ? query initiates the acquisition, performs the needed calculations, and returns the desired result.

Since READ? no longer changes instrument settings, commands that are executed after CONFigure, but before READ?, are taken into effect by the acquisition. This concept allows you to perform a generic configuration through CONFigure and then customize the measurement by programming the settings that are vital to your application. Next the READ? completes the measurement process.

Example:
CONFigure:AC	Configures the instrument to perform an RMS
	measurement of the AC component at the default
	input channel 1.
SENSe:AVERage ON	Sets averaging on.
SENSe:AVERage:COUNT 4	Sets averaging factor at four.
READ:AC?	Starts the measurement and returns the averaged
	AC-RMS value.

READ? uses the same measure functions and parameters as CONFigure. After the instrument has been set up for a particular measure function by the CONFigure command, the same measure function key words can be repeated by the READ? query header. Moreover, it is allowed to request for another signal characteristic by specifying a measure function other than that for which the instrument was configured. However, keep in mind that the instrument was set up by CONFigure for another task. As these settings are not affected by READ?, it is not guaranteed that the instrument is able to acquire the signal characteristic that is requested by READ?

Example:

CONFigure:ACSets up the instrument to perform an RMS measurement of the AC component.