Hi,
There are opto-isolated USB hubs available.
For example from B&B Electronics or Black Box.
Per-Tore
LA7NO
At 19:42 02.01.2008, you wrote:
Miura Kazunori wrote:
> Hello, Adnan
>
> I have same problem of thinking schematics.
> I am making SDR with USB control.
> A noise arrive through a USB cable.
> I think that it is necessary to insulate a PC and SDR.
> But I do not yet understand the method.
> Does anyone have idea?
>
> JA7TDO
> Kazunori Miura
I had a similar problem when interfacing the SDR-X (an SDR radio
that did not enter into the market) to the PC via the
parallel port. A lot of noise entered the SDR through the parallel
cable. The solution was that of using opto-couplers
so that to not have an electrical path between the two equipments.
Maybe something similar could be designed for the USB
port
73 Alberto I2PHD
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