I didn't realize the PTP450 didn't have gigabit ethernet in it. In that case, there's always a syncpipe parasitic. Yes, one more (short) cable, but functionally similar to the uGPS. I.E. uGPS = cable from poe injector to radio and cable from radio to uGPS. Parasitic = cable from PoE injector to parasitic, and *2* cables from parasitic to the radio.
In the case where there's a syncinjector on site, you could also replace a syncpipe basic with a syncpipe deluxe and get two timing ports (or with a syncbox 12 to get 12 timing ports), and still use the same GPS source as everything else. There is also the option of building a long version of the cable described at: http://manuals.packetflux.com/index.php?page=using-a-syncpipe-parasitic-with-a-syncinjector and running it from the sync expasnion output on the last syncinjector. -forrest On Mon, Nov 24, 2014 at 8:11 PM, George Skorup (Cyber Broadcasting) via Af < [email protected]> wrote: > I don't think it would be a bad idea to have a SyncPipe type device > powered by UGPS capable radios. Less cabling is a benefit. If > sync-over-power takes a shit on an AP, it would be easy to toss a UGPS-like > receiver on it. Etc. I think if it was the cost of a Basic pipe, that would > be fine. > > And the PTP450 being SM hardware based, there's no GigE to worry about. It > really sounds like Cambium needs to do a separate hardware spin for the > PTP450 like they did for the 230 and add sync-over-power. > > On 11/24/2014 6:58 PM, Forrest Christian (List Account) via Af wrote: > > It's been a while since I looked at the uGPS and how it was powered, but > yes, that's the general gist. I can't confirm the exact voltage or how > the power appeared on the pins since it has been so long since I looked. > > I also can't remember the exact reason why I chose not to go down the > path of building a syncpipe which could be powered off of a uGPS port, > other than I have a vague recollection of the power supply circuitry being > the reason - probably because the 5v is significantly lower than the 8-9V > that a syncpipe will power on at. > > Due to the PTP450 issue I am looking at some additional sync over timing > port options. Gigabit throws a wrench into a lot of the parasitically > powered options, though. > > On Mon, Nov 24, 2014 at 1:06 PM, Matt via Af <[email protected]> wrote: > >> So when you enable UGPS Power in options what does it do? Is 5 volt >> suddenly output on certain pins of the timing port? What pins? >> >> > Nope. But you can use Forrest's SyncConverter to take the sync pulse >> from a >> > CMM/CTM/SyncInjector and convert it to timing port at the radio. Or >> just put >> > a Parasitic 'pipe on it. >> > >> > I asked Forrest about doing a SyncPipe that takes UGPS power. He said >> no. >> > Maybe the cost of the serial power circuit, I don't know. >> > >> > >> > On 11/24/2014 10:16 AM, Matt via Af wrote: >> >> >> >> I see the PTP230 and likely PTP450 have UGPS Power option. Is there a >> >> way to use this to power up a sync pipe? Still very very very >> >> disappointed the PTP450 does not support Sync over Power. >> > > >
