hi,
I am tring to give the optointerupt output to the dio line of daq card.
For the same i designed one ckt which gives 83mv and 4.9 v at the o/p of optointerupt .But when i connect it to the dio line of pci 6014 daq card through connector lp-68 the o/p voltage at the connector drop to 0.7v.
why it is happening?
in my optointerupter ckt i am using 10k as pull up,240 ohm at anode.
the optointerupter used is H12A1.
Is there any need to connect extra resistor between DGND and DIO pin.
