[hpsdr] Latest Janus block diagram and test results

[Philip Covington]

Hi Chris,

I am not the Phil you were addressing this to, but a comment below:

On 5/23/06, Christopher T. Day <CTDay at lbl.gov> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Phil,
>
> Sounds great! {Oops, accidental pun.) Two small things:
>
> 1) ENOB means what?

Effective Number Of Bits

ENOB = (SNR - 1.76)/6.02

> 2) Would it make sense to put a pair of mini-B USB connectors on the
> board for the balanced audio input from the quadrature detector? I know
> that's not what they're for, but they are quite small and intrinsicly
> deal with differential signals. It would be nice if someday someone made
> a properly balanced and shielded audio output from the detector. Given
> the perfomance you're quoting, I suspect that imbalance and noise on the
> imput lines are not that far away from being a problem. Just a thought.
>
>         Chris - AE6VK

73 de Phil N8VB

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