What size external Compact Flash does the Compact Field Point 2020 support

[pbr007]

I am datalogging with the old Compact Field Point 2020. NI says that the largest Compact Flash card that it supplies and knows the unit supports is 512MB. However I would like to know if it would support larger cards, say up to 4GB. Has anyone tried this?

Pete

[hannahW]

I assume that you are using a cFP-2020 and are talking about the removable compact flash available on this device.

National Instruments has only tested this with cards up to 512MB, but it is a standard compact flash interface so it should work with larger. Take a look at the following two documents, which explain this and the type of cards used.

http://digital.ni.com/public.nsf/websearch/C4CFE4A4475705F986256CED0009F993?OpenDocument

http://digital.ni.com/public.nsf/websearch/3FAFA0DB1B261A7886256D10005B021C?OpenDocument

I hope this helps, if you have any questions let me know

Hannah
NIUK & Ireland

[pbr007]

Hannah, many thanks for that information. I will try a 2GB card.

"Because the CompactFlash interface is a standard interface, the use of larger sizes should work fine (up to 2GB), although it has not been tested"

The second article you mentioned contains the above information, is there a reason for the 2GB limit, or has it just never been tried with a 4GB card?

Many thanks.

Peter

[cs42]

FAT16 is limited to 2GiB if maximum cluster size is 32KiB. Windows NT4 supports FAT16 with a cluster size of 64KiB and thus FAT16 partitions up to 4GiB, but that's pretty unusual. Normally you'll need FAT32 for partitions larger than 2 GiB... (http://en.wikipedia.org/wiki/File_Allocation_Table)

Message Edited by cs42 on 02-27-2006 12:01 PM

[Graziano]

Hi People!
   I'm really interested in this subject, as  I will need  to do some datalog on CompactFlash card,  in my embedded LV application on cFP-2020.  If someone test  2 GB cards, please, report results!!

   Moreover, I'm interested in industrial-grade cards (to fulfill project defines), and any official NI products (bigger than 512 KB)  would be apreciated!

  Have a nice day!

graziano