We have recently started using the NI 9802 on a cRIO system. We are getting the error -65550 discussed here: http://digital.ni.com/public.nsf/allkb/BD118434E87B9732862575C8006FD7FB The article says that the error can be caused by the FPGA resetting while the drive was mounted. "To prevent this error from happening in the future, do not reset the FPGA while you have an SD card mounted, reset before you mount the card or after the card is unmounted." Does a power loss reset the FPGA and require you to reformat the card??? We plan to use this as a remote system and power failure is possible. We would not be able to travel hundreds of miles back to the device to reformat an SD card in the event of a power loss. This can't be right. How could they sell a module that worked like that? Also, does the card need to be formatted with FAT32 or FAT16?

rex1030, One way you can make this system more robust is to wire the backup battery to the secondary input on the cRIO. There are VIs you can use to monitor which power source is active (I think there are examples, otherwise I can look it up for you) so you can detect that you have switched to the backup power source and cleanly unmount your SD Card. When power returns you can remount the card and continue where you left off (and ideally recharge the backup battery). Sebastian