Products > Test Equipment

MHS-5200A function generator teardown / review / reverse engineering

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SaabFAN:

--- Quote from: commie on August 13, 2015, 07:48:30 pm ---The reason this sig.gen. outputs sine distortion on the higher amplitudes and frequencies is because the output op amp(which is possibly a current feedback type) is going into slew rate limiting, which is why you get a triangular wave as the gen. approaches max. bandwidth/amplitude.

Actually, I would expect this kind of gear to be crap, which it is, it's written all over the product.
Why do you guys buy this shit? :popcorn:


--- End quote ---

Because it is almost 200€ cheaper than anything similar from Rigol, Siglent, Hantek, etc.
And it meets my requirements: I need an arbitrary waveform-generator to connect to a power-amplifier to simulate a 60W wind-generator.
I had started to build my own Signal-Gen btw. but it proved too time consuming (building everything on Vero-Boards, writing the Firmware and the Software to control the device with the PC).
Despite its shortcomings, this thing is still good value for money in my case (Paid 68€ including shipping for the 12Mhz-Version).

For calibrating my PM3320A I probably have to get something better or find someone with proper Signal-Generators and Pulse-Gens. :)

dadler:
I have a different (cheap) unit (MHS-2300A), but I bought it to use in the garage for simple automotive purposes. Mine has floating outputs, decent performance for the price, and works well as a beater generator.

I also have a Rigol DG1032Z and now a Keysight 33522B. These are for bench use.

Different people have different use cases. There is value/good reason for cheap, low-end products. I know you don't like the word "low-end" though  :P

onrainbow:
I recently got a GW-Instek 1013 function generator due to Dave's recommendation in one of his videos. Should I have gotten these types of generators instead?

commie:

--- Quote from: SaabFAN on August 13, 2015, 08:17:50 pm ---Because it is almost 200€ cheaper than anything similar from Rigol, Siglent, Hantek, etc.

--- End quote ---

But there are two options you can take, one is to buy a old skool (XR2206 based) function generator like the GFG-8215A dc-3MHz, alternatively save your money until you can afford AWG like the Rigol DG1022.

The MHS-5200A is simply badly designed  :-//

commie:

--- Quote from: onrainbow on August 13, 2015, 08:59:03 pm ---I recently got a GW-Instek 1013 function generator due to Dave's recommendation in one of his videos. Should I have gotten these types of generators instead?

--- End quote ---

Yes ways, You did the right thing buying from a reputable make., so how does it perform do you like it?

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