Hello Bum,
The cwdaq.ocx is an ActiveX file used with some of the AI or
AO controls for Traditional DAQ. The
Traditional DAQ driver is our legacy driver.
Certain DAQ boards are supported on Traditional DAQ, DAQmx or both. Your PCMCIA board was probably only supported
on Traditional DAQ. However the USB-6251
is only supported with the DAQmx driver.
These are two different and distinct drivers. What was the PCMCIA board that you were using
previously?
Traditional DAQ was harder to implement and had a specific
function depending on your application.
DAQmx much easier to program, it has very generic functions that can be
used with all the different types of tasks.
DAQmx also gives more functionality and better response time than
Traditional DAQ.
Are you trying to import your old code to be used with the
USB-6251? Unfortunately, this will not
work; however there are tons of shipping examples that should allow you to
program fairly quickly. The architecture
for DAQmx is better and easier to understand. Here is a great tutorial on getting started with DAQmx.
Respectfully,
Rob F
Test Engineer
Condition Measurements
National Instruments
