Need VIs using digital inputs

[St Augustine]

hi, i am using the PCI-6014 board. I am sensing a digital port from an A/D Converter. I would like to determine the value of this binary represenation.The problem is that i cannot use the analog inputs because i must demonstrate A/D Conversion.i want to know if i can modify the other VI's so that they can accept digital inputs rather than analog.If not are there any VIs that can do this?

[mhaag]

I am a little unclear as to exactly what VIs you are referring to in your post since it sounds like your question is asking if the analog inputs can be used for digital inputs. As far as changing the analog input (AI) channels to digital and using the digital VIs for this, then that is not going to be possible. The digital VIs will not allow you to reference the other lines, such as the analog channels, on your card.

However, you can of course input a digital signal to the analog lines and read them as analog - it would treat it just like an analog square wave for the most part since the TTL signals are just 0 to 5 V signals. You could then use the AI VIs to read this value and, through software, convert that to a digital true/false value and determine the binar
y value through there.

If you have any other questions then please let us know and try to include a little more detail onto your application and any specific VIs or procedures that you have in mind.

Regards,
Michael H
Applications Engineer
National Instruments

[St Augustine]

From what you understood, i fully appreciate your suggestion. However i believe that my question was vague. What i am doing is inputting digital values from an A/D Converter.I am therefore using the digital inputs of thE PCI-6014. However i am using version 5.1 of labview. In this version, the oscilloscopes, spectrum analyzers and other benchtop measurement devices are configured for analog inputs only. However i would like to use these VI's to analyze my incoming digital data. It is possible for me to convert the digital data already recieved into an analog representation and then use the analog VIs
thanks...let me know is anything is still unclear.