Instrument Model

MEASurement

Function

In addition to the subsystems of the in- strument model, which controls the in-

strument functions, SCPI has signal-oriented functions to obtain mea- surement results. This group of MEASure functions has a different level of compati- bility and flexibility. The parameters used with commands from the MEASure group describe the signal you are going to measure. This means that the MEASure functions give compatibility between in- struments, since you don’t need to know

anything about the instrument you are us- ing. See Figure 5-3.

￿MEASure?

This is the most simple command to use, but it does not offer much flexibility. The MEASure? query lets the counter config- ure itself for an optimal measurement, start the data acquisition, and return the result.

￿CONFigure; READ?

The CONFigure command makes the counter choose an optimal setting for the specified measurement. CONFigure may cause any device setting to change.

A

1

INPut1

B

2

INPut2

C

3

 

E

4

INPut4

 

5

 

2

10MHz

6

 

clock

 

 

7

SENSe

DISPlay

CALCulate FORMat

OUTPut

FETch?

GPIB

TRIGger

CONFigure

MEMory

READ?

MEASure?

Figure 5-3CNT-8X Measurement Function

Note that Input B (channel 2) is not available on PM6685.

MEASurement Function 5-5

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Image 67
Fluke PM6681R, PM6685R manual MEASurement Function, MEASure?, CONFigure READ?