Engineering Design NIDisk Guía de usuario descargar pdf (Pagina 24)

NIDisk User Guide

(to avoid specifying parameters on the setup screen) and for automation and interfacing with

SIGNAL, as described below.

Command Line Syntax

Following is the command line syntax for acquisition, playback, and simultaneous

acquisition/playback:

nidisk a nchan duration srate gain filetype acqfile [chanform] [trig]

nidisk p playfile [trig]

nidisk s nchan duration srate gain filetype acqfile playfile [chanform] [trig]

where:

A, P, S = acquisition, playback, or simultaneous acquisition/playback

nchan = number of channels

duration = recording duration in seconds

srate = sample rate in Hz

gain = gain multiplier

filetype = file format: s = SIGNAL, w = Wave

acqfile = acquisition filename or file prefix

playfile = playback filename

chanform = [optional] file channel format:

s = one file per channel, m = multi-channel file

trig = [optional] trigger mode:

manual = keyboard

extlohi = rising edge of external TTL signal

exthilo = falling edge of external TTL signal

Note: other program options can be altered in command line mode. For example, pre-

existing data files of the same name are overwritten and alarm sounds are played on I/O error

but not on I/O done. If the chanform argument is omitted, all channels are written to one

multi-channel datafile ("m" option). If the trig argument is omitted, manual triggering is

assumed. If the file format is "one file per channel", filename should contain the file prefix;

otherwise filename should contain the full filename. See "Acquisition Parameter Screen"

above for details.

Examples:

nidisk a 2 60 50000 10 s myAcqFile

will acquire two channels for 60 seconds at 50 kHz sample rate per channel with a gain

multiplier of 10, to a two-channel SIGNAL-format sound file called myAcqFile.

nidisk p myPlayFile

will play the sound file myPlayFile, which may contain 1 or 2 channels.

nidisk a 2 60 50000 10 s myAcqFile s

will acquire to two SIGNAL-format sound files called myAcqFile.1 and myAcqFile.2.

nidisk s 2 60 50000 10 s myAcqFile myPlayFile

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 35 36

Sin comentarios

Engineering Design NIDisk Guía de usuario Pagina 24