] Older Lucent GPSDO and Rubidium combo
Hello Bob and the list,
Thanks for the reply, I have been trying to set up a good quiet 24
volt supply with adequate current capacity to carry the startup load.
I was initially using a small switcher but it didn't have enough moxie
to get startup completed
Hello Bob and the list,
Thanks for the reply, I have been trying to set up a good quiet 24
volt supply with adequate current capacity to carry the startup load.
I was initially using a small switcher but it didn't have enough moxie
to get startup completed it seems. Some of my initial issues were
Are you under the impression that the Rb is disciplined also? I had thought
that the GPSDO side was disciplined and the Rb was only for holdover, they
seem to call it fly-wheeling. They spec 8 hour holdover for the GPSDO and 24
hour holdover for the Rb in the limited info I've been able to
Well I suppose that my use of the word spec was incorrect the quote
is listed below.
OM redundancy The Oscillator Module provides a highly stable timing reference
capable of being disciplined from an external source, such as the GPS
receiver or network clock. Two versions are available: Rubidium
Oops I found more just as you suspected.
Rb RF frequency stability
After a minimum of 22 minutes of warm-up at 25° C (77° F), interface
circuitry with 0.05-ppm 15-MHz accuracy can be maintained for a
minimum of seven years with CTU adjustment of the OM frequency.
For temperatures between 0-10° C
Hello all,
I'm a long-time lurker, (read on the web) but only a short time
list-member. I purchased a Lucent timing shelf through eBay several
months ago. I had long wanted a GPSDO. Indeed, I had missed out on
the first wave of HP Z3801A units that were so cheap. I really did
not have any need
