Agilent-technologies VXI E1439 Manual do Utilizador descarregar pdf (Página 99)

Agilent E1439 Programmer's Reference

Functions listed alphabetically

age1439_data_scale_get

Gets the data scale factor.

VXIplug&play Syntax

#include "age1439".h

ViStatus age1439_data_scale_get(ViSession id, ViPReal64 scalePtr);

Description

age1439_data_scale_get calculates the correct scale factor for raw data using the current data

resolution and input range. The factor returned by this function is used to multiply raw data to get

data in volts.

When the module is providing only the real part of complex data, the data is doubled to provide

consistent spectrum measurements. This occurs with either shift decimation or when the real part

of a zoomed signal with a non-zero center frequency is taken.

Parameters

id is the VXI instrument session pointer returned by the age1439_init function.

scalePtr points to the calculated scale factor with which to scale raw data to volts.

Return Value

AGE1439_SUCCESS indicates that a function was successful.

Values other than AGE1439_SUCCESS indicate an error condition or other important status

condition. To determine the error message, pass the return value to “age1439_error_message” on

page 102.

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