Data Acquisition Idea Exchange

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Jaco12b

Synchronisation of a PCI 6031 E data differential acquisition (two channels AI0 and AI8) and an external ASIC circuit delivering 2 outputs.

 

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.

 

 

2 Comments
RavensFan
Knight of NI

This forum is for suggesting new ideas for data acquisition cards.  You have an ordinary question which should be posted in the Multifunction DAQ forum.

G-Money
NI Employee (retired)
Closed as a Support Request. 1-866-ASK-MYNI or ni.com/forums are better avenues for quicker support.