How to determine the precision of the AD converter?

Hello,
I'm using traditional NI-DAQ, and I need to determine whether the DAQ card is 12bits or 16bits. I also need to determine how many bits the general purpose counters are. Currently I'm using a PCI-6023E, which is 12bits for the AD, and 24bits for the counter, but I want to make sure that a different card (MIO-16E, etc) can be plugged in and the software will still work. I know I can use Get_DAQ_Device_Info to check which device is plugged in, but doing a switch statement for all 200 devices would be ugly, and would not detect future NI-DAQ cards. Thanks for any help.

Hello:
ANY E-Series DAQ Device (MIO) will work with the same set of VIs. ALL E-Series devices use 24-bit counters. The only thing that will change is whether it is a 12-bit or a 16-bit card. Now, you should be able to program your device so the code won't change between a 12 or 16 bit card. Is that possible?
If you absolutely need to know whether your device is 12 or 16 bit (programmatically), then you will need to use the infoType "ND_DEVICE_TYPE_CODE" in the function "Get_DAQ_Device_Info." It will return a code that you can look up in the help section for the function "Init_DA_Brds." Instead of a huge case structure, I would use a lookup table where you have a 2-D array of Ints with 1 column being the code and 1 column being the # of bits. Just i
ndex the array to the correct row and you can get the # of bits. Basically, all E-series boards are 12-bits except the 603x and 605x boards, which are 16-bits.
I hope this helps...
Good Luck!
Sincerely,
Brooks B
Applications Engineer

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