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MHS-5200A Serial Protocol Reverse Engineered

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janoc:

--- Quote from: wd5gnr on July 21, 2015, 04:33:58 am ---I don't have an English manual, but I've worked it all out. You probably figured that what the main buttons do (pgup/dn for the menu). For the counter on the menu look for:

MSR-Sel. Press OK to go external or TTL.
MSR-Mode. Press Ok to select frequency/count/pos pulse width/neg pulse width/period/duty cycle
Gate-Time. Freqency gate


One of the menu items changes depending on your MSR-Mode (the one after Gate time). If it says C it is reading counts.pressing ok pauses. If it says F it is reading frequency. You can probably figure the rest out from there.


--- End quote ---

Ah ok! Really "obvious"!  :palm:

Jeeze, that user interface was designed by monkeys ...

BTW, any idea how the TTL outputs actually work? There are 8 outputs and in input. I guess the input is for the counter and perhaps to synchronize the frequency sweep, but how to use the outputs?

janoc:

--- Quote from: wd5gnr on July 21, 2015, 04:34:40 am ---I'm not a big Python fan, but the script works well and with Cygwin actually that is a pretty portable combo too ;-)

--- End quote ---

Ouch, Cygwin ...  :o I will probably try to hack a little app up to manage the uploads for this.

wd5gnr:

--- Quote from: janoc on July 21, 2015, 08:36:49 am ---
Ah ok! Really "obvious"!  :palm:

Jeeze, that user interface was designed by monkeys ...

BTW, any idea how the TTL outputs actually work? There are 8 outputs and in input. I guess the input is for the counter and perhaps to synchronize the frequency sweep, but how to use the outputs?

--- End quote ---

Nope, haven't played with the TTL outputs yet.

przemek:
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

wd5gnr:
Awesome! Thank you for doing that!

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