I have one of the Lucent RFTGm-II-Rb Rubidium cell site standards. It's
misbehaving. Knowing the amount of experience on this list, I figured I'd
ask before I dive in much deeper where I have no schematics.
Initially I believed one of the DC-DC converters was not working after
warmup. But after
I've done three 15 MHz to 10 MHz conversions now, an RFTGm-II-Rb, RFTG-m-XO,
and an RFTGm-II-XO. So I'll mention the quick and dirty mod that worked. The
circuit boards are virtually identical between all three.
I pulled the 15 MHz metal cased filter out. Backtrack from the +23dBm 15 MHz
output,
Hawkins [EMAIL PROTECTED]
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Friday, March 28, 2008 9:09 PM
Subject: Re: [time-nuts] Racal-Dana 1992 switches
Charles S. Osborne said, in part,
Now the real question is... is there a clever way to make the Racal
Matt,
Not seeing a better alternative posted for the Racal 1992, and having dozens
of similar bad Toko switches on some Pacific Measurements 1038-N10 Scalar
Analyzers, I decided to buy a bunch of the Jameco ones and give it a try.
Definitely not a form fit replacement. But if you're not too
John,
I have my RFTGm-II-XO (L109) open on the workbench (I'm changing the 15MHz
output to 10 MHz) and tried the sequence you mentioned below. Mine reacts
similarly. However, if you reapply a 10 MHz external source to the 10 MHz
REF In sma it locks after maybe 15 minutes and XO frequency
help troubleshoot that since I could
see which branches failed when, and if they recover. Network loading is
minimal except from the main website server to the Internet via T1 ( soon
OC3, then that will be minimally loaded too except during distance learning
and video conferencing).
tnx,
Charles S
. In the near future some video conferencing and
remote telescope users will add to the chunkiness of the network variable
load. Thoughts on my test software delemma?
Thanks, 73,
Charles S. Osborne, K4CSO
Technical Director
Pisgah Astronomical Research Institute
1 PARI Drive, HC 73, Box 638
Rosman, NC
in the Smithsonian
museum in Washington. That's when you know your technology is becoming
dated. Hi!
Thanks,
Charles S. Osborne
Technical Director
Pisgah Astronomical Research Institute
1 PARI Drive, HC 73, Box 638
Rosman, NC 28772-9614
http://www.pari.edu
828-862-5813 direct
828-862-5554 main
828-862-5877
back over to the OCXO side.
Does anyone have a pinout for the RS422/1PPS or Interface dB15
connectors on this type unit? And is there any software out there which will
look into the lock status/control similar to GPSCon does with the
Z3801A/Z3816As?
Thanks,
Charles S. Osborne, K4CSO
Technical