I have done this with several LPRO-101, X72, and a FRS-C. The FRS-C
that I used was out of a Lucent RFG-RB box. It had a hot TTL output
that was causing issues with the Fury, The level was the problem, not
the ttl. The EFC was hypersensitive, and it took a long time for the
unit to settle down before the Fury would handle it. Same thing with
the LPRO, and X72, you have to wait for it settle for a week or so
before it starts to work well if it's been off for a long time. The X72
was by far the worst, and it would jump from time to time, which would
make the fury unhappy. I didn't have a chassis that would fit the FRS-C
and the fury, so I just went back to the LPRO. The lpro-101 has been
the best so far. I put everything in a 1U chassis and placed it in the
bottom of my rack away from the AC vent.
This is what I use with the LPRO-101.
dac gain: 1000
efc scale: 1.30
efc damping: 35
ocxo slope: positive
phaseco: 35
I test it by changing the antenna delay. It should recover within a
reasonable time. Bumping the coarsedac is typically too much change and
takes longer to recover. I run it with a 20ns offset to my z3801a, and
they always stay within 20ns of other.
I've had the Fury running for about 5400 hours since the last reboot,
running v1.21 firmware. It stays within +-10ns, usually it's between
+-5ns. Over 24hrs, gpscon reports TI average 0.15 or so and stddev
around 2.5ns.
Scott
On 7/27/2010 9:07 AM, Brian Kirby wrote:
Has anybody on the list interfaced a Fury GPS controller to a rubidium ?
If you have, please advise the rubidium are using and your SERV:DACG ,
SERV:EFCS , and SERV:EFCD settings.
I am working with a FRS-C at the moment and I have not found the right
combination to get a stable lock.
Thanks - Brian KD4FM
_______________________________________________
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.
_______________________________________________
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.
