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    EEVblog #1040 – Caesium Beam Frequency Standards

    A look at the Caesium beam time and frequency standards at the Keysight standards lab ...

    • Paul

      Please explain the optical principle of operation.

    • Is that a Bus Pirate board ?

    • Steven Ciciora

      I can’t believe he dosn’t spend more time talking about _best_ feature of this! I only have the x4 lens, but it gives an incredible depth of view (almost an inch)!. On my more traditional binocular microscope, I can focus on either the top of a chip, the PCB, or somewhere in between, but with this thing, you can turn your pcb at an almost 90 deg. angle and actually see _under_ surface mount chips! Great for making sure there are no hidden solder bridges. I went for the USB camera version, and that was a bit of a dissapointment. Besides the delay, the depth of view is a lot more conventional…
      – Steve

    • Hunter Grembecki

      $575 for a lens no way!!!

    • Dave

      Here is a link on how you can view the two images in the video using the cross-eye method:


    • pertinax

      I have found reading glasses to be very handy. Those have magnifications from +1 to +4 and cost about 10 euros or dollars in papershops. I have a set of those for different purposes. And the view is stereo.

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