Data Acquisition Idea Exchange

Community Browser
About Data Acquisition Idea Exchange

Have an idea for new DAQ hardware or DAQ software features?

  1. Browse by label or search in the Data Acquisition Idea Exchange to see if your idea has previously been submitted. If your idea exists be sure to vote for the idea by giving it kudos to indicate your approval!
  2. If your idea has not been submitted click Post New Idea to submit a product idea. Be sure to submit a separate post for each idea.
  3. Watch as the community gives your idea kudos and adds their input.
  4. As NI R&D considers the idea, they will change the idea status.
  5. Give kudos to other ideas that you would like to see implemented!
Top Kudoed Authors
User Kudos Count
2
1
cancel
Showing results for 
Search instead for 
Did you mean: 
Post an idea
0 Kudos

 

I am trying to synchronise the differential data acquisition NIDAQmx of a PCI 6031E board (2 channels AI0 and AI8) with an ASIC delivering two outputs (e.g. 3.54volts and 3.53 volts). 

 

I want to read the difference between those 2 outputs from the ASIC in the NICARD.

 

First I am trying to find out what my connections should be like regarding AIGND, DGND and the GND of my circuit ASIC:

 

http://zone.ni.com/devzone/cda/tut/p/id/3344

 

I am using HARDWARE timing acquisition on NIDAQmx and an ATMEGA128 to deliver a CLOCK to the NICARD and deliver a waveform to the ASIC which makes it send me the data to the NICARD on every CLOCK high.

 

I attach two sketches of the system IDEA and system connections.

 

Thanks.

 

Javi.