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

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dren.dk:
Yes, it's certainly hard to beat a pre-fab ribbon, just for my own benefit these are the options I see for the scope to-pod-connection:

0: 50 lead 0.1" IDC ribbon connector plug into the scope and run all the way to the 16 ch pod (that's what my already completed 16 ch pod does).

1: 50 lead 0.1" IDC ribbon connector plug into the scope, with a very short ribbon that plugs into the breakout board that allows two tighter (0.025" pitch) 26 lead ribbons to go to two 8 channel pods.

2: Straddle mount a 50 pin female connector on the edge of the breakout board so it can be plugged horizontally into the scope.

3: Use an elevated 50 pin connector to allow the breakout board to sit flush against the front of the scope.


0: Easy to source, not that cheap, but a bit unwieldy with that huge ribbon.
1: Easy to source, but it just feels wrong to have a dongle on the scope like that, it's not an Apple product after all.
2: Somewhat easy to source, could be very cheap if a proper straddle mount connector can be sourced, but a bit harder to do because it requires a collar/case around the board to support it against the fascia of the scope, otherwise it more closely matches Rigols solution.
3: Could be harder to find the exact part, but super compact, cheap and robust with zero risk of putting stress on the scope connector, the board should be designed to fit flush against the front of the scope to key the orientation and the same board could be used for the #1 solution if unable to source the connector.

Samtec makes the connector: ESQ-125-23-L-D: https://www.samtec.com/products/esq and it's in stock in at least a few places: https://octopart.com/search?q=ESQ-125-23-L-D
I like Mouser and though they don't have stock, the lead time is only 5 days, so it's not too bad.

Mpe also makes it, but it seems to be a custom part: 100-2-050-0-NFX-YS0-1844:
https://www.mpe-connector.de/index.php?lang=en&menu=16&id_product=1002&order_code=100-2-050-0-NTX-YS0-2324

wulfman:
Well it can all be done, all 16 channels in 2.3"x2" of space using the 4 channel devices.
4 layers is mandatory

dren.dk:
Looks nice, though I think you need some thermal vias to tie the bottom pad into some heat spreading zones.

Rerouter:
wulfman, that is with 0403 passive isn't it? If you even hopped back to a more normal 2x25 0.1" header, that would only make your board a sliver wider, at 2.5" wide.

madmac:

--- Quote from: Rerouter on January 24, 2019, 12:31:26 pm ---wulfman, that is with 0403 passive isn't it? If you even hopped back to a more normal 2x25 0.1" header, that would only make your board a sliver wider, at 2.5" wide.

--- End quote ---

Wulfman's layout is for the  RPL1116 Active Logic Probe 68 pin connector.

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