Engineering Design NIDisk Betriebsanweisung PDF herunterladen (Seite 15)

NIDisk User Guide

• SIGNAL files are played at their original voltage range, using a conversion factor

stored in the SIGNAL file header.

• Wave files are played using an assumed voltage range of ±3 Volts (the default for

Wave hardware), which may or may not be the original voltage range of the data.

To perform a multi-channel playback, submit a multi-channel SIGNAL or Wave sound

file. SIGNAL 4.1 is required to write multi-channel SIGNAL files.

Triggering allows the user to initiate playback 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.

Playback Summary Screen

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

parameters, showing the duration, sample rate, number of channels, triggering, source file

name, and file type. Playback 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 Betriebsanweisung Seite 15