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

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Gandalf_Sr:
I built one and it works - at 10 MHz in my tests so far.

See these new pictures in my thread.

Thanks for all the support and ideas from this thread.

[EDIT] I have now run my budget probe set at 50 MHz (square wave 3.3V logic levels) and it works as expected but there is an occasional 1nS jitter on the signal.  How does this compare to the real LA probes and the build specified in this thread?

bigboss59:
So far there is no RPL1116 design ?
(I know it can be easily adapt; I don't want to invent the wheel again)

If not is there anybody have one set of the MSO to sell ? (preferably in Europe)

BR

koljsch:
Hello!
Someone can tell - after assembling the circuit on the pins, where the voltage should be -2.5 V, the voltage rises to 0.9 V. What is the problem?

oliv3r:

--- Quote from: Vtech on January 02, 2019, 04:33:59 pm ---Here are some photos of RPL1116 Active Logic Probe pod used in MSO1000Z series scope.

Scope has 16 channel logic probe. The probe pod uses 8x LMH7322 (Dual 700ps High Speed Comparator with RSPECL Outputs). 4 comparators on each side. The pod is connected to the scope using 68 pin connector and flat cable. Reference voltage is generated inside the scope.
Cable connector has:
16x2 pins for PECL signals,
22x GND between diff pairs + some extra,
6 pins for VCC
2x2 pins for +/- supply voltage
Some 4 more signals (reference voltage??)


Most likely, the same design is used in new pod for MSO5000 series - PLA2216 Active logic probe. Here are some x-rays of the new pod: https://www.eevblog.com/forum/testgear/hacking-the-rigol-mso5000-series-oscilloscopes/msg2055715/#msg2055715

--- End quote ---

Vtech, I know we kind of hi-jacked your thread with the MSO5k probe.

I too did a design https://www.eevblog.com/forum/testgear/another-low-cost-la-probe-for-rigol-mso5000-by-oliv3r/ but am really interested if we can port it also to the DS1000Z series. Do you still have one? Would you experiment/help. I'd really need the pinout of course, and while looking at those two pictures, I could get like 33% of the pinout, the other 66% probably needs to be measured. E.g. which pin is what channel, which pins are gnd, which pins are power, and what voltages at that. I know it'll be quite similar to the MSO5k, but still.

seppeltronics:
Hello,

for the MSO500/PLA2216:

1) Are the schematics and layouts which are a 100% Clone ?
2) Is the circuitry in the genuine big connector and the pod's ?
3) Is there a good clone that is commercially available ?

Thanks a lot.

Best Regards, Seppeltronics.

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