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Fileinfo.vi – Measurement Computing UL for NI LabVIEW User Manual

Page 85

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Universal Library Virtual Instruments (VIs)

Streamer File VIs

FileInfo.VI

Returns information about a streamer file. When FileAInS.VI or FilePret.VI fill the streamer file, information
is stored about how the data was collected (sample rate, channels sampled etc.). This VI returns that
information.

Refer to the board-specific information contained in the Universal Library User's Guide (available on our web
site at

www.mccdaq.com/PDFmanuals/sm-ul-user-guide.pdf

) to determine if this function is supported on

your board.

Summary:

Inputs:

FileName

[abc] - Name of streamer file.

Outputs:

PreTrigCount

[I32] - Number of pre-trigger samples collected.

LowChan

[I32] - First A/D channel of scan.

HighChan

[I32] - Last A/D channel of scan.

TotalCount

[I32] - Total number of samples collected.

ErrCode

[I32] - Error code. See ErrMsg.VI.

Range

[I32] - A/D range used to collect samples.

Rate

[I32] - Sampling rate used to collect samples.

Arguments:

FileName

The name of the streamer file to read information from.

PreTrigCount

Number of pre-trigger samples collected.

LowChan

First A/D channel of scan.

HighChan

Last A/D channel of scan.

TotalCount

Total number of samples collected.

ErrCode

Error code returned from the Universal Library. Zero if no error occurred. Use the

ErrMsg VI to convert

ErrCode

into a readable string.

Range

A/D range of the collected data.

Rate

Sampling rate of the collected data.

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