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RPL1116 (MSO1000Z) and PLA2216 (MSO5000) Active Logic Probe teardown

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ebclr:
Will HDMI or CAT 7 connectors be a good choice to break in 4 channels pods?

dren.dk:
Regarding pod-cabling:
* RJ45 doesn't really work, it's only 4 pairs and that's too little for even a 4 channel pod.
* HDMI could work for a 4 channel pod as there are 4 pairs and a number of extra conductors, but you'd still have a problem if children start plugging monitors into the breakout board, though.

Regarding length matching the LVDS pairs, I don't buy that length matching matters at all, because at 1 GSa/s nobody is going to be able to be able to measure a sub-cm length difference in signal paths.

Looking at the traced near the LA connector in the scope does not reveal any meandering to equalize the quite uneven lengths of traces going to the LA connector, sure, they could do that on an inner layer, but doing that near the connector where there's plenty of room would make more sense to me, so I suspect that it wasn't a consideration at all.

wulfman:
Length matching was not my concern as much as impedance matching with the distance between dif traces.

dren.dk:
Ok, it seems like you're aiming for a straddle mount socket for the scope connector, what kind are you using?

Muza:

--- Quote from: dren.dk on January 25, 2019, 07:13:18 am ---Regarding pod-cabling:
* RJ45 doesn't really work, it's only 4 pairs and that's too little for even a 4 channel pod.
* HDMI could work for a 4 channel pod as there are 4 pairs and a number of extra conductors, but you'd still have a problem if children start plugging monitors into the breakout board, though.


--- End quote ---

What about full-feature USB 3.1 Type-C cables?
Plenty of shielded data lines and an abundance of cables...

Hopefully some one chimes in on the pin configuration, so that when accidentally plugged into a computer the device just gets ignored.

I kinda like the idea of sleek pods with low profile connectors such as Type-C...

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