All revision h and later syncinjectors will handle 48V which is needed for the 450i.
At 48V and longer cable runs, there is an issue where the 450i gets two pulses each second from the syncinjector due to an interaction between the nice, sharp sync pulse edge, a long cable, and the radio. This interaction causes ringing on the falling edge of the sync pulse which with a long enough cable is severe enough to trigger the 450i pulse detection. We have made a minor circuit modification to round off the sync pulse. This eliminates the ringing, and resolves this problem. We've bumped the Revision number to I0 to distinguish this revision. If you buy a gigabit syncinjector today, you will likely get a revision I0, but to be sure you need to include a request in the order notes. As soon as I'm sure all the Revision H0 are out of the shipping system I'll be updating the website to include this information. In relation to existing revision H injectors in the field, we are considering doing some sort of retrofit program, as they are fairly easily modified. However, we're waiting to determine if cambium is able to issue a software workaround since it makes no real sense to expend a lot of effort fixing hardware which may only be incompatible for a short period. On Dec 3, 2015 10:41 AM, "Sam Lambie" <[email protected]> wrote: > After looking at some of the earlier posts, I can't really determine if I > can use the 450i AP on a gigabit syncinjector. It appears that it want a > 48vdc power supply. What is the best way to set this up? Or will it > actually accept the 29 vdc power supply on the SyncInjector? > > Sam > > -- > -- > *Sam Lambie* > Taosnet Wireless Tech. > 575-758-7598 Office > www.Taosnet.com <http://www.newmex.com> >
