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MHS-5200A Serial Protocol Reverse Engineered

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Kintekobo:

--- Quote from: przemek on July 22, 2015, 05:50:40 am ---I compiled an English manual from Google-translated original Chinese text and other sources of information:
https://github.com/przemekklosowski/mhs52xx/raw/master/MHS5200.pdf

--- End quote ---

Hi przemek

Thanks for the superb work on the manual. Top class!

I have a couple of things to add if you haven't already found them.

The arbitrary waveform transfer is actually -

:aX0,n2,.........n64<CRLF>
:aX1,n65,n66........n128<CRLF>
.
.
:aXF,n.........n1024<CRLF>

where X is an arbitrary waveform store from 0 to F (Hex). There is an OK<CRLF> returned between each block when transfer is successful.


The Sweep time message is :s5tn from trial and error.

Regards,
Chris

pascal_sweden:
Would be nice if the protocol for the FeelTech signal generator can also be reverse engineered, or has somebody already confirmed that they are identical?

danadak:
Here is some eval of the generator performance.

Regards, Dana.

Howardlong:

--- Quote from: danadak on September 14, 2015, 09:09:28 pm ---Here is some eval of the generator performance.

Regards, Dana.

--- End quote ---

Looking at the ringing, how did you probe it?

danadak:
The pics were all probed with 10X probe, 1M, 12 pF. Also a 10X 10M 14.5 pF probe.

When looked at with 50 ohm scope termination, straight short coax, not much changed in terms
of ringing, distortion.

I looked recently at narrow pulse, low duty cycle, at 1 Mhz pulse looks like slew rate limiting
of output amp. At 6 Mhz just 1.5 V, lots ringing severely distorted.

Regards, Dana.

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