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Reverse engineering Tektronix TDS3GV module for TDS3000 series oscilloscopes?

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pmercier:
Thank you for the sketch.
When I took my first screen shot with the hack putting an esp inside seemed a logic step. I haven't tried it because I was concerned about the impact of the WiFi signal on the scope, especially the measurements.
Have you tried to compare the traces before and after the hack ?

stas_last:
At first I thought about it too .. but, I installed power filters for the ESP32, - no interference is seen by eye. The idea is more serious than the screenshots. so even if something there is interference, it does not bother. ;)

pmercier:
Good to know. Thank you.

stas_last:
I just wanted to ask you. I can not get an answer from the oscilloscope to the requests. changed both speed and integrity control. These requests come to the oscilloscope intact (looked in the terminal), but there is no answer. only worked on the old firmware? can't it be that somewhere on the original expansion card something is closed so that the oscilloscope understands that the expansion card is connected? let's say they can be used in the original dtr dsr? :palm:

pmercier:
Yes, it seem there's something else on the card that allow the correct detection of the car type to activate the serial port.
I don't have a card so i started reverse engineering the availables photo cards and for the moment, i've no time to finish it.

I tested some ideas i came along during the reverse for the card identification, but failed so far (i know i documented all of the tests, but i can't find my notes).
I even overwritten one of my software module to allow the engineer mode, but even with that, no chance.

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