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CHAPTER
6
Digital Filter Functions
This chapter introduces the functions to configure the digital filters and the width of O_REQ pulse.
6.1 d64h_DI_filter_set
VC6
short d64h_DI_filter_set (BYTE bCardID, U16 wDIFilter )
VB6
d64h_DI_filter_set (ByVal bCardID As Byte, ByVal wDIFilter As Integer) As Integer
Description:
This function set the digital filter for all DI lines.
Parameters:
bCardID: The specific Card ID that is configured with the on-board Dip-Switch.
wDIFilter: the delay factor for digital filter ( 0
≦
wDIFilter
≦
127 ).
wDIFilter * 25ns < delay for data-latching
≦
(wDI1) * 25ns
Notice:
Please take the input sampling-ate into consideration when you set this parameter.
Assuming the output date is sampled at 10MHz, the input data may update every 100ns.
Therefore,
wDIFilter * 25ns < 100ns
wDIFilter < 4
Return Code:
PCI-D64HU Function Reference Version
43
Содержание PCI-D64HU
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