'AI' won't read data; MAX reads data fine

[carideom]

I'm running Labview 7.1; I developed a simple DAQ application--1 - 5 volt input from SCB-68 board; (DAQ card is PCI-6259); 'AI' subVI will not acquire the sample--times out. I tried changing the "time out", it appears to work at a time out of 10 seconds! I need 100 readings /sec. MAX measures the signal just fine! I used a probe and data table to check values--the table does not populate. Connections have not changed from old DAQ system when new DAQ board and Labview were added--again, MAX measures signal correctly! By running in 'debug' mode, I can see that all but the 'AI' module (subVI) appears to work fine.

Mike C.

[Dennis_Knutson]

The only 'AI' functions are the ones in the traditional DAQ driver and they won't work with your M series board. You have to use DAQmx functions.

[carideom]

Is it a simple as converting the 'AI' modules to DAQmx?

[Dennis_Knutson]

I'm not sure I would describe it as 'simple' because none of the function names in DAQmx are the same as in Traditional DAQ. See http://zone.ni.com/devzone/cda/tut/p/id/4342.

[carideom]

Dennis,

Thanks very much for your help. I have printed the tutorial document you sent me the link for. A few long days and sleepless nights ought to do it.

Mike C.