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Advantech PCI-1710 FIFO Problems

Discussion in 'General Electronics' started by Rodney B. Elliott, Jan 29, 2004.

  1. I apologise if this is off topic but this ng seems like the best bet.

    I have an Advantech PCI-1710 12-bit A/D card that I am trying to get
    going. I am supplying the card with a 1Hz 20Vpp sinusoid. Now in my
    QuickBasic application, if I print the high and low captured bytes to
    the screen in a stream, I only see the first one changing - for
    instance, if my code is

    highbyte% = inp(a2dhigh)
    lowbyte% = inp(a2dlow)

    then I will only see the highbyte changing, in its 4-bit range.
    Likewise if my code is

    lowbyte% = inp(a2dlow)
    highbyte% = inp(a2dhigh)

    then I will see the lowbyte changing in its 8-bit range. I am
    convinced that the problem is related to the FIFO but I am stumped as
    to how to solve it. Any help or recommendations would be
    appreciated...
     
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