Pascal de Bruijn wrote: > Strip read failed due unexpected error :'Hardware Failure' (Read a > number of bytes not a multiple of 274) Hi, that's rather odd. Each measurement generates 274 bytes of data (about 128 x 16 bit CCD values + extras), so it simply shouldn't be capable of doing anything else. Most likely explanations: * Perhaps you're exceeding the maximum scan time of 15 seconds, and the driver isn't reporting or recovering properly from that ? * Some sort of USB I/O issue or breakdown (what System are you using ?) * A fault in the instrument HW or bug in its firmware. * Perhaps I'm wrong in assuming a partial transmission can never happen, and should cope with it more gracefully. I've never seen this myself, by I'm not using this instrument very much (basically just testing). Graeme Gill.