Leo and I are already discussing it off list and he is trying to duplicate my measurements.
Regards, Mark On Fri, May 18, 2018, 10:08 AM Denny Page <de...@cococafe.com> wrote: > Have you considered asking Leo? In my experience, he is very helpful. > > Denny > > > > On May 17, 2018, at 19:19, Clay Autery <caut...@montac.com> wrote: > > > > Anyone who is using one (or both) of these, and/or folks who have a > logical opinion: > > > > *"GPSDO"* - Once configured, unit can run on an external DC source > (5-15VDC). I am NOT using it to power the mast mounted timing antenna. I > don't anticipate leaving unit connected to a computer when not configuring > UNLESS I can figure out how to grab data from the unit via the USB port for > reporting/analysis. > > > > Questions: > > 1) What are the specs of the DC plug on the back? If I use an external > supply, I want to eliminate the addition of yet another SMPS/wall wart to > the clutter. > > > > 2) IF you were choosing a voltage to run JUST this unit on > big/short/twisted/ferited leads, what voltage would you choose (regulating > down from 13.8VDC or so). Anything above the required minimum will be > converted to heat in either the unit or at the regulator. Considering this > uses a TXCO (I think) and not an OXCO or DOXCO, is running it hotter to try > and achieve a more consistent internal temp worth the tradeoff in > potentially shortened life of the unit. (Bottom Line: What voltage will > make it run most accurately/consistently?) > > > > *LeoNTP Networked Time NTP Server* - Can be powered via USB or PoE > according to website. Detailed specs are seriously lacking. Trying to > wade through how to power it. USB is obviously 5vdc or a bit less.... But > the PoE could be much higher with an internal regulator(s) > > > > - I haven't bought my new switch yet, so I can buy one with PoE > capability or otherwise inject PoE on the Ethernet cable from the NTP > Server to the Gbit switch. > > - All Ethernet cables in my network are CAT-7 STP (shielded twisted > pair) or better. (Yeah, yeah, I know, wired Ethernet can be noisy, but you > do the best you can. IF wired Ethernet becomes an issue, I can back up to > the wireless network.) > > - Not sure how much I plan to have the unit connected via USB. Beyond > curiosity data gathering for a while, I'm thinking at some point I want it > to be disco'd and forgotten. One less potential USB cable radiating or > needing ferrites. > > > > There's more... but this is a good start. Just want to try and get > parts on the way. Have to build a separate outboard regulator for the > timing GPS antenna, too. > > > > Thanks! > > > > -- > > *Clay Autery > > (318) 518-1389 > > MONTAC Enterprises* > > _______________________________________________ > > 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. > _______________________________________________ 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.