Agilent-technologies VXI E1439 Manual de usuario descargar pdf (Pagina 147)

137

Agilent E1439 Programmer's Reference

Functions listed alphabetically

age1439_input_range_auto

Performs auto-ranging.

VXIplug&play Syntax

#include "age1439".h

ViStatus age1439_input_range_auto(ViSession id, ViReal64 sec);

Description

age1439_input_range_auto sets the range of a Agilent E1439 to the lowest value that does not

cause an ADC overload to occur. The algorithm starts at the lowest range and moves up until there

is no ADC overload.

Note The baseband signalPath cannot be auto-ranged because it has only one range (-21 dBm).

Note Calling this function deletes any saved state and halts any measurement or fiber transfer.

Parameters

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

sec is the time in seconds to take data at each range to insure that an overload is detected. Setting this

parameter to 0.0 results in the time being set automatically according to an algorithm that depends

on block size and filter bandwidth.

AGE1439_RANGE_TIME_MIN selects the minimum autorange time.

AGE1439_RANGE_TIME_MAX selects the maximum autorange time.

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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Agilent-technologies VXI E1439 Manual de usuario Pagina 147