You aren't talking about the diagram on page 8-11 of the Service Manual are you? That is the signature generator for the probe. As far as I can figure out the signature is generated in the pod software. The Algorithm is the HP signature one, X(16) + X(12) + X(9) + X(7) + X as I recall. This is the algorithm generated on page 8-11. I have a friend who is trying to create a lookup table algorithm or a way of reverse engineering the data to either generate a signature or checksum from the data or a file on a hard drive (to generate sigs for referral). The data can be read a byte at a time from the pod and added in the base unit, but I don't have the knowledge to do the job at it as I have not found the help file for the Fluke Algorithm program. There are some commands that are not explained, and there should be a way of massaging the data with the base unit... Anyone find some more tapes that they can send in for the group? Any text on using the rksic.exe program? John :-#)# At 03:01 PM 12/27/01 -0500, you wrote:
well, with the help of a hardware friend, I think we may have discovered why the code for the flukes checksum cannot be discovered easily - it's done using hardware!
In the circuit are some NOR gates connected together, these are the feedback for the hardware CRC. We (for this read 'Phillip - the hardware' guy!) can work out what the algorithm is, and hopefully let everyone else share in this information.
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