aiwf (MathScript Function) (Windows, Not in Base Package)

LabVIEW 8.2 Help
August 2006

NI Part Number:
371361B-01

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Member of the daq class.

Syntax

data = aiwf(device, channels, rate, samples)

data = aiwf(device, channels, rate, samples, limits)

[data, error] = aiwf(device, channels, rate, samples)

[data, error] = aiwf(device, channels, rate, samples, limits)

Acquires samples from each of the given channels of a specified device.

Name	Description
device	Specifies the device name. device is a string.
channels	Specifies the channels from which to acquire samples. channels is a vector of positive integers.
rate	Specifies the number of samples to acquire each second for each channel.
samples	Specifies the total number of samples to acquire for each channel.
limits	Specifies the lowest and highest signal values you expect to acquire. limits is a two-element vector with the following syntax: [lowest, highest]. The default is [-10, 10].

Name	Description
data	Returns the acquired samples from each of the channels. data is a real matrix. Each row in data corresponds to a channel.
error	Returns 0 if the data acquisition task is successful. Otherwise, error returns -1. error is a scalar.

You specify rate, samples, and limits only once for all channels.

DEVICE = 'Dev1';
CHANNELS = [0, 1];
RATE = 1000;
SAMPLES = 2000;
DATA = aiwf(DEVICE, CHANNELS, RATE, SAMPLES);