Reverse engineering Tektronix TDS3GV module for TDS3000 series oscilloscopes?

[JacquesBBB]

Thanks a lot, Sicco

I use normally 3.3V TTL . This is  the setting I put on my TTL to usb  adapter (foca v2.2)https://wiki.iteadstudio.com/Foca

I have now verified that  the data I type is properly received by the TDS by looking to the debug zone
If I type : *IDN?
I see in the 30 last car
*IDN?\015

so this is correct as I configured with  CR (\015)

ON the opposite, No communication Module is detected, but  reading the past posts  from pmercier

Little update. Received the connnectors today. They're a perfect match.
I soldered dupond wires for the 3.3v serial/usb module directly on the provided pins and ... worked like a charm once i removed the hardware control flow from the scope config.

Sended : *IDN?
Got : TEKTRONIX,TDS 3032C,0,CF:91.1CT FV:v4.05 TDS3FFT:v1.00 TDS3TRG:v1.00

I  understand that the 100 pins connectors + TTL to USB  was sufficient.

[sicco]

Some have tried pulling low the relevant databus lines through eight 1k resistors. Not the best of all ways to do it, but that will make it detect a Communications Card also.

[JacquesBBB]

Succeed !

I have  carefully followed the instructions of pmercier
https://hackaday.io/project/172242-extension-card-for-tds3000-scopes/log/179520-the-actual-informations

and build the mock communication card based on a SN74HC245N (which I had in stock in PDIP form).


Communication with the TDS3032 was then immediate

*IDN?
TEKTRONIX,TDS 3032,0,CF:91.1CT FV:v3.39 TDS3GM:v1.00 TDS3ENG:v1.00 TDS3FFT:v1.00 TDS3TRG:v1.00
PASSWORD PITBULL
MCONFIG TDS3052
*IDN?
TEKTRONIX,TDS 3052,0,CF:91.1CT FV:v3.39 TDS3GM:v1.00 TDS3ENG:v1.00 TDS3FFT:v1.00 TDS3TRG:v1.00

and it seems the scope was converted to TDS3052



Thanks to all  who helped by direct interaction or by putting usable information online.

[JacquesBBB]

A cleaner realisation of  the mock  TDS3GM,

the strange list of communication modules with both  "None" and "TDS3GM"
Isnt that contradictory ?

The rise time after the upgrade using Leo Bodnar  device.