Oh, I get it. Similar to the enhancement they want to make to NTP. I wonder how accurate the timing needs to be for Cambium. Anyone know the max over the air baud rate for 450m?
From: Bill Prince Sent: Tuesday, November 15, 2016 5:05 PM To: [email protected] Subject: Re: [AFMUG] Packetflux & 450M Timing Based on what others have said, I think it is all part of the "Precision Timing Protocol", it is an IP-based way of distributing timing information. Look up IEEE 1588-2008, or Precision Timing Protocol Version 2. No more timing pulses. On Tuesday, November 15, 2016 3:03 PM, Chuck McCown <[email protected]> wrote: Well, sending a pulse sounds like AM to me. Perhaps level shifting would be a better term to use. From: Daniel White Sent: Tuesday, November 15, 2016 3:40 PM To: [email protected] Subject: Re: [AFMUG] Packetflux & 450M Timing Something completely new. Instead of interrupting power, they are sending a “pulse” of power per sync pulse. I don’t recall the details on it at this point. CMM5 FYI is looking like December availability now. Daniel White Managing Director – Hardware Distribution Sales ConVergence Technologies Cell: +1 (303) 746-3590 [email protected] From: Af [mailto:[email protected]] On Behalf Of George Skorup Sent: Tuesday, November 15, 2016 12:40 AM To: [email protected] Subject: Re: [AFMUG] Packetflux & 450M Timing So.. is "Cambium Sync" still a power interruption scheme or something completely new? I thought the thing they were going to move to was 1588v2? On 11/15/2016 1:26 AM, Forrest Christian (List Account) wrote: I guess I need to be more clear on this. .. There are two types of sync over power. The first is being called Canopy sync, which is compatible with the 450i and earlier radios. The second is being called Cambium sync and is compatible with the 450M and I'm guessing later radios. Currently there are devices that produce the cambium sync pulse... The CMM5 and I'm about 100% certain that Last Mile Gear has one as well. I have the technical information I need, just haven't had a chance to get the circuit designed (I only received it shortly before wispapalooza), let alone tested. On Nov 14, 2016 7:52 PM, "Forrest Christian (List Account)" <[email protected]> wrote: No, Cambium elected to drop the traditional sync over power on the 450M. So, you either need to use timing port sync (via the aux port) or use what they're calling cambium sync. The 1U injector is very close. I need to finish validation on the latest board revisions and then will be releasing it to production assuming there isn't some showstopper I missed. On Nov 14, 2016 7:34 PM, "Matt" <[email protected]> wrote: Shouldn't the sync over power for the 450M be the same as PMP450i? How is the 1u sync injector coming? On Mon, Nov 14, 2016 at 12:30 PM, Forrest Christian (List Account) <[email protected]> wrote: > All of the currently shipping syncbox product line are compatible. For sync > over power, I have the specs, but the design isn't done yet. > > > On Nov 14, 2016 5:40 PM, "Sam Lambie" <[email protected]> wrote: >> >> A question for Forrest mostly. Have you come up with a timing product for >> the 450m AP yet? If not, have you got a timeline for release? >> >> Sam >> >> -- >> -- >> Sam Lambie >> Taosnet Wireless Tech. >> 575-758-7598 Office >> www.Taosnet.com Virus-free. www.avast.com
