On 9/14/2016 2:59 AM, David J Taylor wrote:
It is non-trivial to set other than a few embedded frequencies with the existing
software. There has been a veiled promise of improved software that remains
unfulfilled. It is a GPSDO, although the internal oscillator is a TCXO, not an
OCXO. Mine runs on even a laptop USB port.
Wes
======================================
Folks,
Mine's running of a standard PC USB port, and the power consumption measures
between 220 and 240 mA.
With the supplied software (mine dated 2016-May-10, but that may have been the
install date) setting the frequency is simply typing in the frequency in Hz,
clicking "Find" and clicking "Update". I've tried a whole variety of random
frequencies (e.g. 123.456789 MHz) and the device locks within a few seconds.
One limit is that the second output frequency needs to be related to the
first, as far as I can tell.
Cheers,
David
True for the first frequency. The second statement may or may not be true, it
was not clear in the original description of the device. When I wrote Leo and
asked about a specific second frequency he did a manual calculation and sent me
the parameters. From another email reply:
"Sorry, did not catch your email first time. Thank you for your custom!
The numbers are internal settings of PLL chip Si5328 and you can find more
details here:
https://www.silabs.com/Support%20Documents/TechnicalDocs/Si53xxReferenceManual.pdf
You can set other frequencies just by typing them into Output 1 box and
clicking "Find" This will find and program the new frequency.
If you want two separate frequencies at the same time it gets a bit tricky
and often need manual setup. In such case let me know what combination you
would like and i will try to find the correct settings."
While this is process is helpful, it is hardly convenient and frankly me
deciphering the doc without a Rosetta Stone isn't going to happen.
Wes, N7WS
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
