EEVblog 1631 - $230 Micsig MDP700 HV Differential Probe Review

[@park8023]

Of course we want disassembly and reverse engineering, I don't think there will be a revolution in the design but at least we could try to understand what justifies the price!

[@jacobfaseler5311]

Reverse-Engineering tear down yes please! Super helpful seeing how it’s done when you find yourself needing to make a different flavor!

[@petersage5157]

Dave: "It doesn't meet it's spec!" Micsig: "Okay, we'll change the spec."

[@JAKOB1977]

well done definately these product-videos where you excel and you tend to keep a tight ship, and just let the performance stand on their own two feet.. As an subscr. from the early days.. would prefer more content like this.

[@rhp9797]

It's going to be cool to see the inside of it!

[@TradieTrev]

Always impressed with your knowledge of these test tools Dave; Got 2 of your meters myself and love the resolution and frequency rates compared to fluke instruments (they are slow for me when I'm on the fault finding hunt)

[@fredinit]

Dave, Don't turn it on, take it apart!

[@SamueldeFaria-bw1fm]

Thanks for this video! I usually don't comment but, please do the teardown.

[@stephanbode548]

Thanks for this brilliant video! Make a tear down!

[@TheDefpom]

I reviewed the MDP701 in November last year, they sent it to me to review as well, didn't get the nice case for it though :-( but I quite liked it.

[@MonkeySci]

I've seen the prototype of this probe. it's a laser diode, a photocell and several opamp in the transmitter side, it adds DC offset to the probe input, then subtracts the DC offset in the receiver side. It has an MCU to control the offset calibration and temperature compensation for offset and gain.

[@YouveBeenCabadged]

Yes we do enjoy this sort of stuff :)

[@susanrobins4297]

Good stuff Please do the tear-down.

[@Poult100]

Unicorn farts! 🤣 I'd like to see the measuring gear for that!

[@Anthocyanina]

yes dave, do a teardown! this also makes me wonder if anyone manufactures low voltage differential probes. having differential inputs on the analog discovery can be so useful, and it seems no bench scope has differential inputs, or low voltage differential probes exist

[@Anthocyanina]

@@jim9930 oooh, that one looks really interesting, thank you!

[@shazam6274]

@@jim9930 Thanks, looks like just what I need!

[@slothsd1]

Yes, please do a tear down and reverse engineering of the new probe.

[@techko0240]

What happened to "Don't turn it on, take it apart"? Of course, we want you to do a teardown!

[@f33net]

I think it's a very stupid decision to hang a metal box on BNC with tight buttons. Not only will this break off BNC in the end, but it is also very inconvenient to press and watch the indication.

[@EEVblog]

Good point.

[@montymintypie]

I've been enjoying my MDP701 for a few months now - being USB C powered is very convenient, and I'm not doing fancy enough stuff to notice the reduced noise vs the HVP70!

[@uni-byte]

My lab is full of unicorn farts. Finding and elimination noise in your lab would make a great video!!!

[@markocebokli6565]

For spot frequency high CMRR measurement, you could probably use FFT, to dig the signal out of noise

[@grosserkuchen]

Best way to tunning... cables are long enough, external ferrite ring/core, some windings, CM Filter... it will improve all of them. I hope so😅maybe a test will be necessary

[@pawel2077]

can you please explain your comment for a newbie?eg. what impact could ferrite ring have ?

[@CarlVanWormerAE7GD]

For your CMRR testing, did you try to see if putting your hand around the case (capacitive coupling) increased the CM noise coupling? I've been fooled by poor shielding causing CM problems on some of my designs.

[@springburo]

It’s great seeing low voltage Common mode rejection would it be possible to see high voltage, such as a high side gate?

[@whiskyguzzler982]

Been a couple of times to buy a EEVBLOG Differential Probe and they are always sold out. I figured they were no longer being sold, but then I see a video saying they are! What’s the trick to getting one?

[@KeritechElectronics]

Looks like a cool probe, only the front end leads could be 10...20cm longer and shielded.

[@hillppari]

I hate to break it to you but 700volts is not high voltage

[@Tim3ru]

Yes please! Tube amp fan here (Audiophool on a budget, insert oxymoron here)... I'd be constantly challenging it's 700[V] spec 🤭 Any chance it might still work after 'serving it' 800[V]😅

[@EEVblog]

Older one: kzbin.info/www/bejne/jGqWg6GZpJKqgck

[@tomkatt2321]

Does the 3V lower output signal mean HD scopes are needed to see the benefit of the improved design ?

[@cambridgemart2075]

Does it handle 1500V DC? If not, it's not a high voltage probe (except by EV definitions)

[@truemorpheus]

Teardown and RE please

[@EonTide1111]

Is your hvp 70 battery powered or battery rechargeable?

[@EEVblog]

Both battery and external USB/DC jack

[@domtom128]

Teardown should've been first! :P

[@roberthines2741]

teardown and schematic please 😁

[@ahbushnell1]

Does it meet HV safety standards??

[@cambridgemart2075]

Probably not as it isn't designed to measure high voltages as defined by the IET, IEC, etc.

[@ahbushnell1]

@@cambridgemart2075 That's clear. But I wouldn't buy it.

[@alch3myau]

How can you call it a review if you aint testing 40kv+ ? ;p (Will edit later in case ;p)

[@artur8403]

He should cooperate with ElectroBOOM channel. Send those probes in for further testing 😂

[@koelie17]

Take it appaaaaart

[@erwe1054]

а когда разбереш? давай схему 😂😂

[@yodjisuzuki9033]

Made of what?😅

[@WernerEngel1]

a 15 kV version would be nice. 1 kV is not really "high voltage" ;-)

[@wendeltech]

Reverse Engineering please!!!

[@bdivi2000]

As always, ridiculously high price of these dif probes

[@EEVblog]

Err, you know that as far as diff probes go, this one is CHEAP.

[@bdivi2000]

@EEVblog My point, exactly 😀

[@domtom128]

Why don't you make a cheaper one with same or better spec? You'll own the market!

[@bdivi2000]

@domtom128 Because I can do other things better. One can not do everything 😀