Have you considered asking Leo? In my experience, he is very helpful. Denny
> On May 17, 2018, at 19:19, Clay Autery <[email protected]> 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 -- [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.
