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  • EEVblog #249 – Agilent U1272A Multimeter Review

    Posted on February 29th, 2012 EEVblog 12 comments


    TEARDOWN:
    http://www.youtube.com/watch?v=YsTZuPN7wQQ

    FIRMWARE BUGS:
    http://www.youtube.com/watch?v=1fC382Tog0k
    http://www.youtube.com/watch?v=lmGi7BZS5NM

    PC INTERFACE & DATA LOGGING:
    http://www.youtube.com/watch?v=kSmiDzbVt_U

    A review of the Agilent U1272A multimeter.
    How does it compare with the Fluke 87-V it is aimed at?

    If you are looking for data logging solutions, visit Measurement Systems.

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    11 responses to “EEVblog #249 – Agilent U1272A Multimeter Review” RSS icon

    • Paul Lichtenberg

      Hey Dave,
      I am a big fan of your videos. They are very helpful and offer good advice for potential consumers. I love your honesty and your tell-it-like-it-is approach! Any chance of you doing a clamp meter shootout? I am an electrician apprentice in New York and would be interested in knowing how some of the brands out there stack up against each other in your testing criterion. Namely the Flukes/Agilents/Extechs/Amprobes/Etc.
      Thanks,
      Paul

    • Hi Dave,
      exellent review as all of your reviews, and no its not too long.
      The issue with the Ohms range after the overload test could maybe caused by the PTCs of the inputprotection.
      There is a PTC in series with the measured resistor and when you apply 240V to the Ohms range this PTC will heat up and increase its resistance to protect the meter. Cooling down of the PTC would be slowly because its inside the case.
      Have you measured the test resistor a few minutes after the test?
      Has the meter recovered?

    • Since measuring capacitence on the low range was marginal a test Dave might want to try is to measure a 8 nf cap and then add a pf cap to it to see if it can measure a small change. I have done this down to 1 pf using a 555 chip using a 1000 pf cap with suitable resistor to give about 100 kHz frequency.

      Surviving 240 VAC on resistance input was test I certainly wouldn’t try at home on my meter.

    • Hi Dave,
      The bug you mentioned is acturally a screen test. I am the owner of U1273A the OLED version of U1272, the key combination you mentioned in the video is will ligh up all the pixels on the screen.

      • I don’t think so. The meter completely locked up and refused to turn on for many minutes and many attempts at the power switch. It only came good when I hit record and complained on camera :->

    • I have noticed that you measured capacitance on the conducting esd mat while presing cap against it. This could create parallel path for current with hard to estimate properties and mess up measurements. Could you try again on the non conductive surface?
      Note that when using lcr meter you have used meter socket -so no issue there.

    • I noticed you touched on the smoothing mode and when you did it didn’t look like it was working AT ALL! I found this video by a guy in South Africa that ran a compare between the Same Agilent and 87v for just smoothing feature and it was clear the Agilent U1272A was not working. Maybe another bug in the software?

    • Dave, at around 22:19 in the video, you said you “disabled the null”, but I still see the “delta” symbol in the display. Your offset was about +28pF
      when you entered the “REL” mode.

    • Hi Dave! I own this multimeter and have noticed that it tends to overshoot on dc volts when the low pass filter is turned on, and it is in autorange. I don’t own any other meters with dc low pass, so I cant compare this to any other. Just wondering if this is normal or should i be worried?

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