Noise from analog outputs 1,2 and 3; not digital!!

[Danny Castillo]

Hello I was wondering if I am the only one that is experiencing noise from the analog outs, (I have a Virus TI Desktop, connected to a Yamaha 02R96 mixing desk, which in turn is connected to my Motu 2408mk3 via 3 adat cards)but when I mean noise I mean there is a very noticeable intermitent beeping, as the noise hose heart rate monitors make in a hospital. I tried it on all outputs, and all have the same noise, it doesn't happen when I am in sequencer mode as I am using the outputs from within the sequencer (Motu 2408Mk3).
So I decided to buy a digital coax cable to see if the noise pesisted but it dissapeared totally, obviously I am only using the main outs so if I want to use the other 2 they'll have to be in analog, which is the noisy one. What's wrong ?, I changed the usb cable just in case, but nothing, I am wondering whether its just the usb audio card inside the TI?
I already own other analog equipment plugged into my mixer and yes because its analog you get noise, but the noise coming from the TI is just too much, bleeping, and white noise.

can anyone help, or know anything about it please.
Cheers

Danny javascript:emoticon('')