Engineering Design NIDisk Guía de usuario descargar pdf (Pagina 13)

NIDisk User Guide

Triggering allows the user to initiate acquisition manually by clicking OK [Manual] or by

applying an external TTL signal [External], to synchronize with another system. Trigger

polarity indicates whether acquisition will begin on a rising [Low to high] or falling [High

to low] trigger signal. See "External Trigger" below for discussion.

I/O process done produces an alarm sound when the acquisition is done by playing the

sound file IoDone.wav. See "Other Functions" for details.

I/O error produces an alarm sound when acquisition ends in error, by playing the sound file

IoError.wav. See "Other Functions" for details.

I/O overload produces an alarm sound when the input signal overloads the A/D converter by

playing the sound file IoOverload.wav. To avoid auditory runaway on a continuously

overloaded signal, the overload alarm is played no more than once per second. See

"Acquisition / Playback Progress Screen" and "Other Functions" for details.

Acquisition Summary Screen

After closing the acquisition parameter screen, NIDisk displays a summary of the acquisition

parameters, showing the actual sample rate, gain, number of channels, destination

filename(s), required disk space, and other information. NIDisk does not check for

sufficient disk space before acquiring, so be sure the required space is available on the

disk. Acquisition will begin when the user clicks OK (Manual triggering) or after the user

clicks OK and applies the external trigger (External triggering).

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Engineering Design NIDisk Guía de usuario Pagina 13