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Re: How should we wire the photoswitchs?
Sean,
The DSC is just a pass through for the DIO module NI9403 but does contain pullup resistors on each line. However, the individual lines are configurable as either input or output in Crio software. i.e. you have to configure as input to receive data. If configured as an output, and the output is low, you may measure the values you stated above. The 9403 is a TTL I/O.
This is from the 9403 data sheet.
Input Voltage –0.25 to 5.25 V
High, VIH 2.2 V min
Low, VIL 0.8 V max
Hysteresis, VH 0.2 V min
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.
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