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topster
2005-10-18, 21:20
Hi,

I read in one of Sean Adam's post that lifting the 12.2880MHz crystal will cause the SB2 not to be able to lock in to 32KHz signals, like certain internet radios.

Is that the only frequency that is affected?

Seems like a good idea to lift the crystal since it'll help jitter quite a bit, especially if 32KHz streams are the only one affected.

Thanks!

seanadams
2005-10-18, 22:39
Hi,

I read in one of Sean Adam's post that lifting the 12.2880MHz crystal will cause the SB2 not to be able to lock in to 32KHz signals, like certain internet radios.

Is that the only frequency that is affected?

Seems like a good idea to lift the crystal since it'll help jitter quite a bit, especially if 32KHz streams are the only one affected.

Thanks!

32 and 48KHz will not work if you lift the 12.2880 xtal.

Impact on clock jitter is measurable, but tiny.

topster
2005-10-19, 09:44
Thanks Sean!

dean
2005-10-19, 09:53
On Oct 18, 2005, at 10:39 PM, seanadams wrote:
> 32 and 48KHz will not work if you lift the 12.2880 xtal.
Also, 8k, 16k & 24k will not work as well, as stations at these rates
will be resampled to 48k or 32k as appropriate.

-dean

BFitz
2005-10-20, 19:17
I am interested in adding an external 11.2896 self contained low jitter oscillator. Can you give me a few hints how to hook up an external clock? I assume I would bypass the 74HCU04 ?

Thanks

Bob