| Products > Test Equipment |
| MHS-5200A function generator teardown / review / reverse engineering |
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| HighVoltage:
--- Quote from: Dwaine on June 17, 2016, 07:27:23 am ---Boy is that square wave ugly..... With the new re-designed PCB... --- End quote --- It looks like this generator is more for simple hobby applications. |
| bianchifan:
A couple of days ago I decided for a flash deal at Gearbest's, 51.74$ seemed pretty good to me :) Obviously they are working permanently on the PCB and I received a fresh new version, although only minor changes. Maybe manually reworked too, lots of soldering honey in the filter area and numerous soldering spatters. Unfortunately the CD is mispressed, so no arbitrary for me at the moment, at MHINSTEK I found only chinese program version :((. Overshoot's still present, ringing cannot tell due to noisy scope... All waves @1MHz |
| EU1:
--- Quote from: devttys0 on August 26, 2015, 08:04:01 pm ---Given that these units are designed to a very low price point, my guess is that they somehow/somewhere got a really good deal on a large lot of AD812's. --- End quote --- AD812, AD603, LMH6612, polymer capacitors, dual coil inductors, relays, and probably flash are reused old parts. But this is actually not too bad considering the price. If they used new parts, it wouldn't be so cheap ($56 including shipping in my case). |
| EU1:
--- Quote from: bianchifan on July 14, 2016, 11:56:01 am ---Unfortunately the CD is mispressed, so no arbitrary for me at the moment, at MHINSTEK I found only chinese program version :((. --- End quote --- I've uploaded the software by the following link: https://www.dropbox.com/s/zjdbeem2rsq5ngq/MHS-5200A.7z?dl=0 |
| technogeeky:
I, too, have the newer version. I paid about $90 for it because I needed it immediately to run some tests, and had planned to return it and buy the $50 version. I will post some detailed scope measurements of the signal in a bit, but in the meantime, I figured I'd make use of my shiny new USB microscope and post pictures of all the critical components of this board, so you guys can get a better idea of what's inside. I can post pictures of the overall circuit board later (or you can use the ones above, which are apparently identical to mine). But none of the previous photographs have quality IC pictures, so I figured I'd contribute. Although uploading 25 images on this forum is kind of tedious... |
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