Modfactor + usb = noise?

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- February 9, 2016 at 10:28 pm #113245
  
  Trendin
  Participant
  
  Hi,
  
  I’m getting a high freq. noise and and every few seconds a minor click when i connect the usb cable to my pc.
  
  Is this normal? when i unplug the usb cable from the unit, the unit is dead silent again.
  
  Is my unit faulty?
- February 13, 2016 at 10:04 pm #142552
  
  nickrose
  Moderator
  Eventide Staff
  
  I'm afraid it means that you have a ground loop, which often occurs when connecting audio units to PCs. It will probably be helped if you plug your computer and your audio rig into the same power socket.
  
  Other wise you could try a USB isolator. These are available from Amazon for about $40, but we have not yet tested them (we will shortly).
  - February 13, 2016 at 10:07 pm #142553
    
    Trendin
    Participant
    
    nickrose wrote:
    
    I’m afraid it means that you have a ground loop, which often occurs when connecting audio units to PCs. It will probably be helped if you plug your computer and your audio rig into the same power socket.
    
    Other wise you could try a USB isolator. These are available from Amazon for about $40, but we have not yet tested them (we will shortly).
    
    Yeah i figured it out later that day. The problem is that most usb isolators give 200ma at best and the mod factor needs 500ma.
    
    I can always upgrade and replace it with an H9 core 🙂 bluetooth isnt noisy
  - February 14, 2016 at 1:25 am #142557
    
    nickrose
    Moderator
    Eventide Staff
    
    Trendin wrote:
    
    nickrose wrote:
    
    I'm afraid it means that you have a ground loop, which often occurs when connecting audio units to PCs. It will probably be helped if you plug your computer and your audio rig into the same power socket.
    
    Other wise you could try a USB isolator. These are available from Amazon for about $40, but we have not yet tested them (we will shortly).
    
    Yeah i figured it out later that day. The problem is that most usb isolators give 200ma at best and the mod factor needs 500ma.
    
    I can always upgrade and replace it with an H9 core 🙂 bluetooth isnt noisy
    
    The mf is not powered from the usb – it maybe needs a few mA. Anything that isolates the ground and provides a tiny bit of power should be OK.
- February 14, 2016 at 7:37 am #142559
  
  Trendin
  Participant
  
  Awesome. I’ll give it a try then.
- February 25, 2016 at 7:08 pm #142677
  
  Trendin
  Participant
  
  Thought i’d let you know that I’ve solved the issue.
  
  I got one of these:
  
  Works like a charm!!! now my rig is quite and can be controlled from the pc!
  - February 25, 2016 at 7:14 pm #142679
    
    gkellum
    Participant
    
    Trendin wrote:
    
    Works like a charm!!! now my rig is quite and can be controlled from the pc!
    
    Thanks for letting us know. We'll have to create an FAQ item recommending that device for this problem.
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