Good info guys, thanks. The maximum distance between any two ONTs is good to know, although I doubt I'll run into that particular issue.
On Thu, Mar 30, 2017 at 10:13 PM, Mark - Myakka Technologies < [email protected]> wrote: > Adam, > > Actually, you can go out further that 20km. I have customers out as far > as 29km. There are two factors to take into consideration. > > 1. Optical budget. Very simple math just like the wireless world. Start > with TX subtract splitter loss, distance loss, and connector loss. If > greater than RX value, you are good to go. We usually try for a 3-4 db > margin or paper to give us some wiggle room. > > 2. The donut, as Donny calls it. The maximum distance between two ONT's > on one OLT port is 20km. Zhone has a parameter on each olt port that I can > set min and max distance. I have most OLT ports set at 0km-20km which is > the default. I have a few at 10km-30km for longer reach. > > > > *-- Best regards, Mark *mailto:[email protected] > <[email protected]> > > > *Myakka Technologies, Inc. *www.MyakkaTech.com > > > *Proud Sponsor of the Myakka City Relay For Life * > http://www.RelayForLife.org/MyakkaCityFL > > *Please Donate at Please Donate at *http://www.myakkatech.com/RFL.html > > > > > *------ Thursday, March 30, 2017, 10:05:26 PM, you wrote: * > > There's a link budget calculation. I found some online calculators, but > to be honest I didn't actually understand all the variables. Rather than > barf it up, I signed up for a class. > $195 http://fisuniversity.com/courses-fiber-to-the-x.html > > One rule of thumb I saw was you could go 20km on a 32:1 PON...but it's not > actually that simple. > > > ------ Original Message ------ > From: "Jason McKemie" <[email protected]> > To: "[email protected]" <[email protected]> > Sent: 3/30/2017 10:01:33 PM > Subject: [AFMUG] GPON > > > How do you go about calculating the maximum distance for a GPON system? > Is it the total distance of all the fiber on a given PON? > > -Jason >
