Can you not use the presence of the 15MHz signal to gate the 10MHz?
Mike
On 18/09/2019 17:18, David C. Partridge wrote:
I already pick off the 10MHz prior to the Altera chip, and that works very
well. But that is always present, whereas IIRC the 15MHz is only present
when the unit is locked.
Hence wanting to convert 15MHz to 10MHz.
D.
-----Original Message-----
From: time-nuts [mailto:time-nuts-boun...@lists.febo.com] On Behalf Of paul
swed
Sent: 18 September 2019 13:11
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] 15Mhz in 10MHz out?
David
Its been quite a while but either 5 or was it 10 MHz comes from the OCXO.
There were pictures of the tap off points. So it could be a bit easier for
you grab that 5 or 10 MHz and run it through the chip to multiply. If 10
MHz then just filtering as I recall.
Regards
Paul.
On Wed, Sep 18, 2019 at 5:12 AM David C. Partridge <
david.partri...@perdrix.co.uk> wrote:
Having seen the recent discussion of the NB3N502 and other PLLs for
frequency multiplication. I'm wondering if anyone knows of a similar
*small* IC that will convert 15MHz to 10MHz ?
Why? My current modifications to the KS24361 output 10Mhz signals
regardless
of whether the unit has lock. ISTR that the original 15MHz output was
only
enabled when the unit had lock. I'd like to redo the PCB which I put in
place of the 15MHz band-pass filter and replace it with one that takes
15Mhz
an outputs 10Mhz.
Thanks
David
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