Electronics > Repair
TDS3014 adventures
Jarek:
Thank you @sicco
I think I have the same connection as yours.
Maybe I have the wrong mini_module driver?
I still don't know what's wrong.
It doesn't work on a working TDS3012B either.
sicco:
Oh no...
Pin numbering on these 100 pin connectors...
I fear that what you think is pin 1 is actually pin 100.
In this photo the board plugged into a TDS3000b motherboard. The motherboard pin 1 (square pad on its PCB) links to what's labelled pin 1 on the plugin board. But the connector manufacturer would refer to that pin as pin 100. Because male and female parts flip numbers. Just as with DB9 connectors...
So where on the tds3000 main board bottom side do your wires really go now?
PS what i edited in your schematics with red lines - that was wrong after all I think - it also does not line up with what's in my photos - sorry about that.
sicco:
One more, in case it's still not resolved: could it be that you have (had) a short on your FT Mini Module between FT4232H pins 9 and 10? Your picture makes me think that's the case...
If yes then also check that FB3 still is OK. 3V3 on VPLL?
Jarek:
This short circuit is between pin 10 and 11. This is how it should be.
Maybe I have some bad drivers for this module? I have the FT 4232 version and you have the 2232 version, but it probably doesn't matter.
sicco:
Attached an updated bdm.exe PC program. This version allows you to do testing of just the FTx232H module without necessarily having it connected in a tds3000. If you start it from the command prompt like this:
bdm testFT2
then it attempts to connect to the FT mini module and then lets you toggle the relevant digital outputs by hitting keyboard 0, 1, 4 or 6 key, and read back the relevant input line. Connect a multimeter, or say a LED, or a scope to those mini module outputs and see if they go high (> 3V) and low (<0.2 V) when the PC says they are a 1 or 0.
If that runs OK, then restart with "bdm testFT3". That test uses the MPSSE mode with just a 1 bit in-out shift register. If you wire b1 and b2 (TDO and TDI) together then the input bit that it reads must be the output value that sends out.
Finally, "bdm testFT" will automatically walk through setting/clearing the (output) bits, not in MPSEE mode.
If that all does work then it has to work in the scopes I'd expect.
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