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    EMI and Ferrite Cores

    Scheduled Pinned Locked Moved IT Discussion
    ferriteelectromagnetic inemiferrite coreferrite choke
    31 Posts 5 Posters 6.7k Views
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    • MattSpellerM
      MattSpeller
      last edited by

      Very interesting

      If you have access to an oscilloscope or a signal gen you could probe it out a bit further... very intrigued and I hope you let us know how it plays out!

      BrainsB 1 Reply Last reply Reply Quote 0
      • BrainsB
        Brains @MattSpeller
        last edited by

        @MattSpeller

        The models are:

        Thought Technology: ProComp Infinity Model SA7500
        J&J: I-330 C2 Plus

        1 Reply Last reply Reply Quote 1
        • MattSpellerM
          MattSpeller
          last edited by

          Page 5, try self calibration
          http://www.thoughttechnology.com/pdf/manuals/SA7510 rev. 7 ProComp Infiniti User Manual.pdf

          Try replacing the fiber - that shit breaks so easily and I'm guessing the Doc isn't familiar with using it

          BrainsB 1 Reply Last reply Reply Quote 0
          • BrainsB
            Brains @MattSpeller
            last edited by

            @MattSpeller so you think there may be a small break in the fiber that could be letting the EMI in, its just not bad enough to cause the unit to stop working?

            Ill send this over to the user and ask him to try it

            MattSpellerM 1 Reply Last reply Reply Quote 0
            • MattSpellerM
              MattSpeller @Brains
              last edited by

              @Brains just trying to think of the most common things to break - fiber is always top of the list.

              BrainsB 1 Reply Last reply Reply Quote 1
              • BrainsB
                Brains @MattSpeller
                last edited by

                @MattSpeller awesome. He is receptive and will take care of that this weekend or Monday. I am open to any ideas, I was also wondering if it might be a case of "dirty power" in the building? Maybe we have some feedback from the AC Units being sent back along the line? Since this happens in many different places in the building, maybe we could install something to "clean up" the power. Before today I always considered those power cleaners a scam, but this seems like the intended usage if I ever saw one

                MattSpellerM 2 Replies Last reply Reply Quote 0
                • MattSpellerM
                  MattSpeller @Brains
                  last edited by

                  @Brains Power cleaners won't help you*, but I do recommend you try it outside the building in a big field or something.

                  *the units are battery powered IIRC

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                  • MattSpellerM
                    MattSpeller @Brains
                    last edited by MattSpeller

                    @Brains said:

                    @MattSpeller Maybe we have some feedback from the AC Units being sent back along the line?

                    I've seen huge underground transformers cause bullshit like this before with testing gear.
                    Edit: they're not typically under the building though...

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                    • BrainsB
                      Brains
                      last edited by Brains

                      I know it has been a while since I last updated, but we finally came to a resolution a few weeks ago and I haven't had a chance to update yet.

                      And....... it completely disappeared without a trace. haha well that is typically my luck so I wasn't too surprised.

                      We were able to walk around with the equipment and a laptop across the entire property, and believe we did identify the cause as our next door neighbors. They are a medical facility with some MRIs, so maybe their equipment was failing and they replaced a part.

                      One piece of additional information, I was able to have some really good conversations with their tech support and learned that they do have internal filters for 60Hz so that explains the absence of a 60Hz signal. I appreciate all the help from everyone on this forum. It was my beacon of light in a sea of confusing data.

                      Hope you guys are having a good April 1st. Don't trust everything you read

                      1 Reply Last reply Reply Quote 1
                      • ?
                        A Former User
                        last edited by

                        I've used Ferrite cores a lot with cat5e on cell towers to block RF from the cellular antennas.

                        1 Reply Last reply Reply Quote 2
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