It appears when you enable the uGPS power option on a PTP450 that the override plug voltage jumps from around 3 volts to around 5 volts. Assume thats how they power it.
> 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. > >
