This utility will also work for SN50K+ 2465B scopes? (with surface mount A5 board and NVRAM). I was loosely following a thread on Tekscopes2 which I think is about the same utility, and was under the impression that only B version scopes with SN under 10K (thru-hole A5 board) would be the only ones that can be recovered with this utility. Can you please clarify?
Thank you for pointing that out. I can only say it works with thru-hole A5 boards that use a 27512 EPROM in U2160. I did not take into account the different memory model used in the SN50K+ B scopes (SMD A5). The D27011 paged EPROM (U2360) operates quite differently, and the memory control PLD U2250 is also different.
Although a 27512 would plug into the U2360 socket, I doubt the utility would work as written, and may even conflict on the bus with the SRAM chip. I would need to find an SMD A5 board to create a version to run on those boards. With any luck it could be made to work on both SMD and thru-hole so there wouldn't be two versions floating around.
From the schematics I've looked at so far, the SMD boards always use the self-contained Dallas module. If anyone knows differently, please say. So, it should always be possible to write the EXER 02 data directly to the module before installing it in the scope. The module will be out anyway, assuming it is a replacement operation because the battery died.
I will look to buy an A5 SMD board when I can find one for cheap, or if anyone has a working spare to loan me in the US for a few weeks, I promise to return it unscathed. Please PM me. I also have an extra thru-hole A5, and can trade if you are interested.
Another path... I have some ideas on what should work, if anyone wants to work with me and try some images. You need to have an alternate way to restore your cal data, such as a GPIB port. I can pretty much guarantee your cal data will get trashed until we get to the right solution. PM me if interested.
Also, it is the same utility posted on TekScopes and TekScopes2. I was following up with the posts from the OP on those forums. Maybe I should have kept it in one place.