Recent content by jdkoontz

  1. J

    Filtered IR 60hz

    Understand. Thanks for the response. The easy solution is just to turn off HVAC, but there are several banks of HVAC in the Church around the BroadcastStudio. The AV director said we will ignore for now and wait for Fall when HVAC is turned off and reconfirm final tests at a later date. The...
  2. J

    Filtered IR 60hz

    Is there any way to use the RTA as a CAL file? Measuring any room noise like HVAC and remove that from room tests?
  3. J

    Filtered IR 60hz

    Probably HVAC?
  4. J

    Filtered IR 60hz

    Spectrogram with no filter.
  5. J

    Filtered IR 60hz

    Spectrogram with 63hz filter.
  6. J

    Filtered IR 60hz

    Thanks John, I'll try that.
  7. J

    Filtered IR 60hz

    The above graph was at our church. At home, I still see the pre-pulse 60hz signal, but it's more in the 1% range. I removed the USB charger that's powering the UR22 and usded only USB 5V for power and removed the Laptop charger and ran the tests on Laptop battery. The pre-pulse ripple went down...
  8. J

    Filtered IR 60hz

    I'm using a Steinberg UR22 MKII USB Soundcard
  9. J

    Filtered IR 60hz

    Why am I getting that ~60hz signal prior to the pulse? Is that a power coupling into the sound card?
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