Agilent Technologies E1439 manual Age1439inputsetup, AntiAlias

Agilent E1439 Programmer's Reference

Functions listed alphabetically

age1439_input_setup

Sets all the analog input parameters. This description also includes information on the following functions which set or query the input parameters individually:

age1439_input_alias_filter selects or bypasses the built-in analog anti-alias filter age1439_input_alias_filter_get gets the anti-alias filter state age1439_input_coupling selects ac or dc input coupling age1439_input_coupling_get get the input coupling type age1439_input_range sets the full scale range age1439_input_range_get gets the input range

age1439_input_signal connect/disconnect the input signal to the input amplifier age1439_input_signal_get gets the input buffer amplifier state age1439_input_signal_path selects a baseband or IF signal path age1439_input_signal_path_get gets the current signal path

VXIplug&play Syntax

#include "age1439".h

ViStatus age1439_input_setup(ViSession id, ViInt16 signalPath, ViInt16 range, ViInt16

coupling, ViInt16 antiAlias, ViInt16 signal);

	ViStatus age1439_input_alias_filter(ViSession id, ViInt16 antiAlias);
	ViStatus age1439_input_alias_filter_get(ViSession id, ViPInt16 antiAliasPtr);
	ViStatus age1439_input_coupling(ViSession id, ViInt16 coupling);
	ViStatus age1439_input_coupling_get(ViSession id, ViPInt16 couplingPtr);
	ViStatus age1439_input_range(ViSession id, ViInt16 range);
	ViStatus age1439_input_range_get(ViSession id, ViPInt16 rangePtr);
	ViStatus age1439_input_signal(ViSession id, ViInt16 signal);
	ViStatus age1439_input_signal_get(ViSession id, ViPInt16 signalPtr);
	ViStatus age1439_input_signal_path(ViSession id, ViInt16 signalPath);
	ViStatus age1439_input_signal_path_get(ViSession id, ViPInt16 signalPathPtr);
	Parameters
id	is the VXI instrument session pointer returned by the age1439_init function.
antiAlias	determines whether or not to use the built-in analog anti-alias filter. This filter only applies to
	baseband measurements. In IF mode the antialias filter is always turned on. The antialias
	parameters always set the baseband anti-alias filter regardless of the signal path.
	AGE1439_ANTIALIAS_ON inserts a sharp-cutoff 36 MHzlow-pass filter ahead of the analog-
	to-digital converter. You should leave the filter on at all times to insure band-limited, anti-aliased
	data.
	AGE1439_ANTIALIAS_OFF bypasses the low-pass filter.
antiAliasPtr	points to the current value of the antiAlias parameter in the current signal path. Therefore, in IF
	mode this function always returns AGE1439_ANTIALIAS_ON.
coupling	specifies the ac or dc coupling mode of the input. This parameter applies to the baseband input
	configuration only.
	AGE1439_DC connects the input directly to the 50 Ohm buffer amplifier. Although dc coupling
	can be selected in both baseband and IF signalPath, it has no effect in the IF path because the
	signal is ac coupled after the input section.

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