Thanks everyone. My concern is did I need to reach out and get an exchange before the 30 days is up. I sense ASI the vendor is actually a pretty good company and will do the right thing. Regards Paul WB8TSL
On Fri, Nov 14, 2014 at 7:35 AM, Bob Camp <[email protected]> wrote: > Hi > > > That OCXO is doing very well. > > If you look at the plot, it’s doing a few LSB’s on the DAC over the time > period. That’s good performance. > > Bob > > > On Nov 13, 2014, at 9:17 PM, paul swed <[email protected]> wrote: > > > > Bob the actual pictures and files are large so here is the left screen > and > > right screen from the z3811 program. Pretty easy to guess whats in the > > middle. > > Lots of noise on the ti/pps and you can see EFC is rising all the time. > > I will say in the past it had been a steady rise now there is a wave that > > might mean its slowing down a bit. > > But this all looks rattier then I would believe. > > Regards > > Paul > > WB8TSL > > > > > > On Thu, Nov 13, 2014 at 5:43 PM, Bob Camp <[email protected]> wrote: > > > >> Hi > >> > >> How much is your unit moving? > >> > >> Bob > >> > >>> On Nov 13, 2014, at 1:50 PM, paul swed <[email protected]> wrote: > >>> > >>> On the older units that used a RB to control an Xtal. They created a > mix > >> of > >>> 5 Mhz +10 Mhz and that produced 15 out that hit an amplifier to drive a > >> 12 > >>> way splitter. > >>> I think I reverse engineered the circuit. Its on paper and filed. Oh > that > >>> ends this discussion. > >>> Anyhow it was not hard to figure out. > >>> I am still baking my Lucent in so want to see if it settles. > >>> There is just the barest of hints it may be. > >>> > >>> So do not want to power down to explore. Happy to dig in if I don't > have > >> to > >>> return the unit. > >>> > >>> Regards > >>> Paul > >>> WB8TSL > >>> > >>> On Wed, Nov 12, 2014 at 7:21 PM, Bob Camp <[email protected]> wrote: > >>> > >>>> Hi > >>>> > >>>> The chain in the Z3810 / 3811 / 3812 Lucent boxes is *much* different > >> than > >>>> the setup in the earlier parts. The phase noise and ADEV on the > Z3810’s > >> is > >>>> better than what you got on the earlier versions. That makes keeping > the > >>>> noise down in whatever mod you do more important. The existing 10 MHz > >>>> output on the Z3810 setup is a real good example of how a seemingly > >> simple > >>>> thing can add a lot of phase noise and even mess up ADEV. > >>>> > >>>> I don’t think the 15 MHz is used for much of anything in the Z3810. > That > >>>> could be wrong, but I can’t see where it is needed based on poking > >> around a > >>>> little. The 15 MHz buffer appears to be quiet and puts out a lot of > >> power. > >>>> Using it for 10 MHz would give you a *lot* of 10 MHz signal to play > >> with. > >>>> IF the mods are simple it’s an attractive solution. If it involves > >> swapping > >>>> out 30 parts - not so much. > >>>> > >>>> Bob > >>>> > >>>>> On Nov 12, 2014, at 5:50 PM, Perry Sandeen via time-nuts < > >>>> [email protected]> wrote: > >>>>> > >>>>> Wrote: At some point we will get into hacking the main board > >>>>> to switch from 15 MHz to 10 MHz. > >>>>> > >>>>> One doesn’t have to that if one uses the two IC divide by > >>>>> 1.5 circuit I offered the list. I specifically found it so I didn’t > >> have > >>>> to > >>>>> hack the innards. > >>>>> > >>>>> Wrote: The great news is the oscillator is 5 Mhz. > >>>>> > >>>>> Don’t bet the rent on that. My early units have 10 MHZ Datum > >>>>> oscillators. > >>>>> > >>>>> Bob’s point about getting the GPSDO’s if all cost the same > >>>>> is a good point. > >>>>> > >>>>> Another point. At least on the older units I have: GPSDO, > >>>>> Rubidium, and Crystal oscillator, the output circuitry after the 15 > MHz > >>>>> conversion takes place is the same. So if one hacks the 10 Mhz into > the > >>>> chain, > >>>>> all one has to do is remove or bypass the 15 MHz filter before the > >>>> output. > >>>>> > >>>>> Even if you don’t have the rubidium unit but have either/or > >>>>> GPDO or Crystal oscillator email me off list for the rubidium > schematic > >>>> as > >>>>> after the logic chips they use the same circuit. > >>>>> > >>>>> Regards, > >>>>> > >>>>> Perrier > >>>>> _______________________________________________ > >>>>> time-nuts mailing list -- [email protected] > >>>>> To unsubscribe, go to > >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>>> and follow the instructions there. > >>>> > >>>> _______________________________________________ > >>>> time-nuts mailing list -- [email protected] > >>>> To unsubscribe, go to > >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>> and follow the instructions there. > >>>> > >>> _______________________________________________ > >>> time-nuts mailing list -- [email protected] > >>> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>> and follow the instructions there. > >> > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > <lucent ti left screen.GIF><Lucent ti right > side.GIF>_______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
