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    EEVblog #1056 – Digilent Open Scope MZ Review

    Dave looks at the Digilent Open Scope MZ Review, an $89 open source oscilloscope, logic ...

    • SUPER VIDEO Dave!
      I love your equipment reviews and especially the multimeter reviews. Keep them coming!
      Can’t wait for the drop and drink tests you promised!

    • the outatime license plate is great.
      nice video and multimeter!

    • Really nice review and a very nice multimeter. I completely agree with your verdict. Not really neccecary for general bench use, but perfectly useable for any industrial/field application.

      Oh, can’t wait for the next episode. You made me curious. 🙂

    • Auggie

      Hey Dave is that a California license plate in the background?

      • Ross Moffett

        Back to the future novelty.

    • will you do tests until you destroy it?, i just couldn’t do that, it’s just a too good piece of equipment (waay better than mine). but..anyway, destructive tests are pretty interesting(and funny to do :))

      sorry for the bad English

    • pghpete

      Dave, thanks for such a wonderful blog. I started watching it around the 20 episode mark, but quickly went back to watch the ones I had missed. I am a Sr. Linux Admin that is just getting into electronics. My last job was at a board manufacturing company which friends there helped me get past my newbie-ness. I was just about to get ESD certified when I was laid-off. I think it would be great if you had an ESD episode. It’s a subject that is controversial for the items I work on (arduino, diji hacking, marvell’s plugcomputer hacking, etc.) Perhaps you can shed light on the importance of static electricity discharge… even with devices you take apart. I have the standard “static strap” and ground it into a computer case (thats powered off) but have my eye on a static matte. (at that company, I had to where an ESD shoe strap on the ESD tiled floor.) How important is ESD for the beginners? I got started in this arena < a year ago, but I would love to see you explain a "basics of esd" eevblog.

      • Perhaps you should check out episode 14, 20 and 21. They all have some ESD related stuff (but you’ve probably seen them).

        Yes, I’d like Dave to do some mythbusting on ESD claims and safety procedures aswell. Would be an interesting blog, I think.

        • Dan

          I have read some comments in his forum about this. Apparently it is hard to test, as equipment works fine for a few month, even a few years. After that, the chip just completely dies. The chip in question was a logic chip of some kind (CMOS). The user didn’t use proper ESD techniques, and discharged onto the chip.

    • Jaybee

      Fluke 28, will it float with the test leads
      wrapt around it? Great video.

    • Johannes

      Hi Dave, great video.

      In your abuseive episode you shoud test if you can use it under water.

      Anoter idea for multimeter abuse, try use it for things it was not designed to do, like hammer in a nail.

      Great video looking forward to your next!

      • Ondre

        …use it as a bottle opener!

      • Bob

        I’m pretty sure you’ll break it if you hammer a nail into it.

        • Im guessing you could use it to hammer in a smaller nail no problem, but it depends on what kind of wood your trying to get it in to(sometimes even a real hammer wont do with hard and dry wood)

    • fox

      i like your evil laugh at the end 😀

      btw can you keep this fluke under the water for 30 min, and than open it, to check if its not leaking?

    • Oli.

      Hi Dave,

      1. Water emersion test.. Fresh, Salt or both.

      2. How will the meter handle some basic and
      common EMI tests….Say a mobile phone,
      two way radio sitting next to the meter
      sending/receiving calls whilst taking

      Happy Testing……

    • Jay

      Dave, thanks for showing us the range switch contacts on the PCB as you did at minute 10. This is a weak spot on older Flukes with the printed graphite contacts. I hope you’ll continue to show the contact construction for other meters in future videos.

    • Michael Thompson

      “Boys and girls, Ladies and gentlemen”

      Echoes of Dr. Julius Sumner Miller?

      Those echoes would be very well placed, as you also have the same passion and love for what you do!

      (For new players: http://en.wikipedia.org/wiki/Julius_Sumner_Miller )

      • Can’t say I remember him saying that, but interestingly I did read his biography many moons ago!

    • koft

      Not another god damned multimeter review!

    • mamut

      Dave, test maybe a cheap, crappy chinese multimeter? Just for comparison with a really good one:)

    • Ondre

      @koft: It’s not another god damned multimeter review, it’s another damned good multimeter review 😉

    • koft

      I want to see some more electronic design stuff from the pro! Not learning much from multimeter reviews.

    • Keith Brown

      Has anybody before this brought up that famous rejected marketing slogan:

      “If it works it’s a Fluke”?

    • Brian Hoskisn

      What a coincidence, I just bought one of these! I really wanted the Fluke 289 because it’s not *that* much more expensive than the 28II, but my application for this meter was everyday, reliable use and whilst the 289 satisfies the latter, it doesn’t really satisfy the former. I thought it would start to hack me off if I used it as my main meter, so I opted for the 28II instead. The “hacked off” factor was also the reason I avoided the recenty reviewed Agilent, though I still think it’s the coolest meter I’ve ever seen!

      I’m glad the Fluke 28II got a good review! I’m dissapointed about the diode test though, I hadn’t noticed that the constant current output has a lower maximum voltage than on the Fluke 87. That’s really annoying! You have to ask yourself… why would they change that? It just makes no sense at all. Bizarre.

      But yeah I’m happy with the meter so far. Much better than the Meterman stuff that seems to be standard equipment at our place.


      • Yeah, the 28-II would make a much more user friendly everyday use meter than the 289, by far.
        I guess the diode mode is limited due to some internally generated voltage or reference rail. Maybe a trade-off for the 800 battery life requirement perhaps. The 28-II is 3xAA’s vs 6xAA’s for the 289.

    • How about measuring the voltage of a TIG welder electrode with a high voltage arc start system? 🙂 Its could be a real world application (as bone headed as it may be) and with a voltage range from several thousand to tens of volts it could put on an interesting light show!

    • calif


      Nice review. I need to purchase a DMM I’m stuck between the Fluke 289, 87 and the Agilent U1252A. I do electronic design, I’m looking for an accurate and fast meter. What do you recommend? Any chance you can do a comparison between the 3?


      • They really are 3 different meters. The Agilent and 289 can be compared because they are both data logging multimeters, and in this respect the 289 probably wins out because it has on-screen graphing, but it’s more expensive and so is the PC interface cable. The Agilent though would probably be a better meter for everyday use if you MUST have data logging, because of the nicer LCD segment display, update speed, and usability. But both have pretty ordinary battery life.
        The Fluke 87 is one of, if not, the best meter on the market for general everyday electronics use IMO. But it does not do data logging.
        It depends upon your requirements, but generally speaking 99% of bench work is general purpose stuff, so a long battery life and ease of use are quite important in my view.

        Everyone’s needs are different, so I can’t say which one is best. Any lab needs two meters, so ideally you’d have one of each – one for everyday use, and another more complex one for data logging if you ever need it.


        • calif


          Thanks for the response. One more question, you mentioned something in your agilent review about getting the B variant for review. Do you know what the difference is between the A and B variants of the agilent meters?

          Thanks again.

          • I’ve been told the difference is not much, just the colour and some firmware differences.

    • Hi Dave, thanks for the good work. Fluke make nice portable meters, but I won’t be buying one.

      I always have a few cheap portable meters. They are surprisingly accurate. Spend the bulk of your meter budget on a high accuracy, non-portable bench meter with accuracy maybe 5 times better than you require, but don’t go crazy. Check your cheap portable meters against the bench meter every so often. You get cheap disposable meters, known to be accurate. If you do government work and need traceable accuracy, you only have to send your bench meter for calibration once a year and maintain records of cross comparison. That way, you stay working the whole time. You get high utility, spare meters, traceable accuracy and and occasional mistakes won’t have you crying. Different workshops have different goals of course. *smile* Cheers, Colin

      PS: I always keep an analogue meter particularly for automotive work, the needle movement is a useful trend indication for charging systems.

    • Roddy

      I can’t wait to see you meter something under water! Was that screw driver used for filleting fish (the one at the beginning of the blog)? I have a cheap chineese meter, but you almost have me convinced to buy a fluke. I’m enjoying playing blog katchup.

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