Laurel-electronics LT SERIES TRANSMITTERS ANALOG INPUT Manuale Utente Scaricare il pdf (Pagina 24)

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18. CUSTOM CURVE LINEARIZATION

Curve.exe is a DOS-based, executable PC program used to set up an Extended transmitter so

that the internal digital readings have a user-defined, non-linear relationship with the input

signal. For example, it allows a transmitter to correct for transducer nonlinearity. Calculated

linearizing parameters are downloaded from a PC into non-volatile memory of the transmitter.

The curve-fitting algorithm uses quadratic segments of varying length and curvature, and

includes diagnostics to estimate curve fitting errors. The program is self-prompting, avoiding

the need for detailed printed instructions.

To get started, download curve.exe from our website into the directory that will also contain

your data files, such as c:\curves. Connect your transmitter to the PC and double-click on

curve.exe, which is an executable file. Follow the computer prompts and extensive help

information. Pressing R (Enter) returns to the main menu. You will be given the choice of four

data entry modes, which are explained in detail.

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Laurel-electronics LT SERIES TRANSMITTERS ANALOG INPUT Manuale Utente Pagina 24