Measurement Computing ADLIB WIN - Manual (Page 143)

Chapter 41 Data Formatting Functions 28-1
28. DATA FORMATTING FUNCTIONS:
The Data Formatting functions provide conversions of RAW data into Voltage. The two functions provide
the means to convert specific range of a given buffer or the entire buffer into engineering units. The driver
uses the current configuration of a device, such as it’s gain and data offset values in the calculation.
28.1 AL_DemuxData
Prototype C\C++
(16 Bit) ERRNUM AL_DemuxData(LHLD lhld, LPBUFFSTRUCT lpbuffstruct,
float _far * DestBuffer, long lLength);
(32 Bit) ERRNUM AL_DemuxData(LHLD lhld, LPBUFFSTRUCT lpbuffstruct,
float * DestBuffer, long lLength);
Visual Basic for Windows
Not supported
LHLD lhld handle of the LDSD
LPBUFFSTRUCT lpbuffstruct input address to the ADLIB buffer
float _far * DestBuffer destination address to the user buffer
long lLength length of the destination buffer in samples
The AL_DemuxData function converts the selected ADLIB buffer pointed to by lpbuffstruct to
Engineering voltage units, placing each samples voltage into the destination buffer pointed to by
fpfDestBuffer.
Parameter
Description
lhld Identifies the instance of the logical device subsystem.
lpbuffstruct
points to the ADLIB buffer to demux.
fpfDestBuffer
points to the destination buffer.
lLength
specifies the length in samples of the destination buffer.
Returns:
On success ERRNUM is set to 1, otherwise ERRNUM contains the last error code that occurred during the
call.
Related Functions:
NONE
Supported Logical Device Subsystems:
Pci55xx Series: ADC0