I need to Acquire 2 Analog channels together with a Digital Port/channel to read three line states, at 20KS/s.

wilvil2000 · ‎08-30-2002

I am using a PCI-6071E board and would like to be able to acquire analog data along with digital data all in the same clock/time, etc... I found this VI that seems to be what I need except it is not made for the PCI-6071E board. Any help will be appreciated. Thanks in advance.

Filipe A. · ‎09-03-2002

Hello;

Unfortunately, you can't accomplish that with the PCI-6071E alone. The reason why is because that DAQ board only allows unstrobed digital acquisition, meaning that the digital lines will update throug Software calls only. Since Windows manages all the process running on your machine at all times, your digital updates will be limited by how fast the Operating System can handle the tasks.

I don't believe the OS can update the digital lines at the rate you need.

The solution for that is to purchase a PCI-6534 and synchronize both boards together through RTSI. The 6534 can definitely keep up with that rate, you will need only to configure the board to do pattern input acquisition, and route the clock that updates the 6071E to be the clock that will updat
e the 6534.

Hope this helps.
Filipe A.
Applications Engineer
National Instruments

Multifunction DAQ

I need to Acquire 2 Analog channels together with a Digital Port/channel to read three line states, at 20KS/s.

I need to Acquire 2 Analog channels together with a Digital Port/channel to read three line states, at 20KS/s.

Re: I need to Acquire 2 Analog channels together with a Digital Port/channel to read three line states, at 20KS/s.