Measurement-computing UL for NI LabVIEW Manuel d'utilisateur télécharger pdf (Page 85)

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.

1 2 ... 80 81 82 83 84 85 86 87 88 89 90 ... 108 109

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Measurement-computing UL for NI LabVIEW Manuel d'utilisateur Page 85