[hpsdr] Need a 10 Mhz reference?

[Bill Tracey]

Need - no, it is a nice to have.  If you have a good 10 Mhz reference 
then use it, if not no problem.   The CPLD is setup to lock the 12 
Mhz VCXO to the 10 MHz reference if one is supplied.  If not, it will 
supply  Vcc/2 as the control signal to the VCXO, so it will be close 
to the nominal frequency.

Regards,

Bill (kd5tfd)

At 10:36 AM 5/15/2007, Roland ETIENNE wrote:
>***** High Performance Software Defined Radio Discussion List *****
><...snip...>
>Hi all,
>Now studying a bit more to do some tests with the boards, I have a
>question: on Janus, the 12 Mhz clock comes out of a vco, so we need an
>external reference clock? ( 10 Mhz) and is this external clock needed to
>use the boards with the SDR-1000?
>
>Thanks for the reply.
>
>73, Roland f8chk.



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