Sensoray Smart A/D Manual de usuario descargar pdf (Pagina 13)

SENSORAY INSTRUCTION MANUAL SMART A/D DRIVER FOR WINDOWS

Page 11

For example, models with eight channels use channel numbers ranging from 0 through 7. Models with sixteen channels use

channel numbers ranging from 0 through 15, etc.

3.7.1 SetFailMode()

Function: Declares whether the specified channel’s output data value should default to a large positive value or to a large

negative value in the event an open sensor is detected.

Prototype: void SetFailMode( long hBD, long channel, long failhigh );

Example: ///////////////////////////////////////////////////////////////////////////

// Program all channels on board number 5 to fail high.

///////////////////////////////////////////////////////////////////////////

#define NCHANS 16 // Assume this is a 16-channel Smart A/D board

for ( chan = 0; chan < NCHANS; chan++ )

SetFailMode( 5, chan, true );

3.7.2 SetFilter()

Function: Applies a software low-pass filter to the specified channel. The filter is implemented by the Smart A/D™ board as

described in the Smart A/D™ hardware instruction manual.

Prototype: void SetFilter( long hBD, long channel, long filtval );

Example: ///////////////////////////////////////////////////////////////////////////

// Program board number 5, channel 11, to have a 50% filter.

///////////////////////////////////////////////////////////////////////////

#define FILTER_PCT 50 // Desired filter percentage (0% to 99%).

SetFilter( 5, 11, FILTER_PCT * 2.56 );

Parameter Type Description

hBD long Board handle.

channel long Sensor channel number to be affected.

failhigh long 0 = fail low (large negative value).

1 = fail high (large positive value ).

Parameter Type Description

hBD long Board handle.

channel long Sensor channel number to be affected.

filtval long Values may range from 0 (default, filter is disabled) to 255 (maximum filter).

Filter values outside the legal range may cause unexpected filtering results.

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Sensoray Smart A/D Manual de usuario Pagina 13