Agilent Technologies 53230A Guia do Utilizador descarregar pdf (Página 197)

53220A/53230A User’s Guide 197

53220A/53230A Math, Graphing, and Data Logging 6

Using the Scale Functions

The counter scaling functions include null, percent change (PCT), part per mil-

lion change (PPM), part per billion change (PPB), and scale (Mx-B). The func-

tion is selected with the command:

CALCulate[1]:SCALe:FUNCtion {NULL|PCT|PPM|PPB|SCALe}

CALCulate[1]:SCALe:FUNCtion? (query form)

NULL - performs a null operation. The result is the measurement minus the

reference value. (See “Scale Reference Value” for information on setting the

reference).

PCT - performs a percent change operation. The result is the difference

between the measurement and the reference value, expressed in percentage.

PPM - performs a parts per million change operation. The result is the differ-

ence between the measurement and the reference value, expressed in parts

per million.

PPB - performs a parts per billion change operation. The result is the differ-

ence between the measurement and the reference value, expressed in parts

per billion.

SCALe - performs an Mx-B operation. The result is the measurement (x)

multiplied by the gain value M (CALCulate1:SCALe:GAIN command) minus

the offset value B (CALCulate1:SCALe:OFFSet). If

CALCulate1:SCALe:INVert is enabled (On), the measurement will first be

inverted (1/x), resulting in a M/x-B operation.

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Agilent Technologies 53230A Guia do Utilizador Página 197