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Reverse engineering Tektronix TDS3GV module for TDS3000 series oscilloscopes?

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pmercier:
@james_c : I've a lot of floppy drives, but all of them avec missing something : real usable floppies ... So i've buyed a slim floppy emulator for my 3000A but i haven't been able to make it work. Need to test it again with a normal floppy emulator (and make a slim to HE34 adaptator ...)

@av500 : No it's not enough to make the scope accept a "virtual" extension card. I've already confirmed that ;)

Galen:
for the video signal, the ADV7120 has 8 bit input for each color, but based on pmercier's pin list, the scope only has 4 bit for each color? is this correct?

pmercier:
The scope provide only 4bits per colour on the connector. Checked directly on the mother board.

Galen:

--- Quote from: pmercier on June 06, 2020, 04:51:44 pm ---The scope provide only 4bits per colour on the connector. Checked directly on the mother board.

--- End quote ---
Thanks pmercier, very helpful pin list.
Then, for each color, are the rest 4 bit pins of ADV7120 grounded or pulled up to 5V?

james_s:
I've used the ADV7123 in other things before, the datasheet says to ground unused inputs. If you tie them high you'll never be able to display black.

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