[time-nuts] Navsync CW-12 GPS Board - I don't believe it!!

Azelio Boriani azelio.boriani at screen.it
Wed Jan 4 15:00:55 UTC 2012


The output frequency is programmable: try $PRTHS,FRQD,xx.xxx<cr><lf> where
xx.xxx is the desired(?) frequency in MHz with 3 decimal places (they say
for 10KHz set 0.010).
Maybe the slight offset is due to the NCO based on the chipping rate of
10.23MHz:

10.23MHz/2^32*4198404003 is 9.99999999783MHz

On Wed, Jan 4, 2012 at 3:49 PM, Mike S <mikes at flatsurface.com> wrote:

> On 1/4/2012 9:29 AM, Ed Palmer wrote:
>
>  What's the point of saying that it's "steered by GPS" when it's
>> off-frequency. What does that even mean? Does it steer the frequency to
>> keep the error constant?
>>
>
> If it's constant, maybe they just need to re-spec it as having a
> 9.99999999985 MHz output. :-)
>
>
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