On 3 GHz 450m, there needs to be DC power to the device. You can still use cnPulse to the “MAIN” Ethernet port to provide Sync to the radio using Cambium Sync as you mention (it is a straight-thru Ethernet cable pinout).
The configuration options are noted in the last set of diagrams in this post:
If this doesn’t answer your question, please let me know.
@CambiumMatt , I am actually asking about the Sync-over-power feature. The 450m requires DC power over a 4-pin plug. It is stated that the DC power could be used in the future for “Sync-over-power”. That way, the radio could receive power, sync, and fiber using only 2 cables.
So, understanding that, what is the intended pinout when this feature becomes available?
Ah, now I understand your question. This feature is not yet implemented. The idea here is that the 1PPS GPS timing pulse can be delivered via the same 4-pin power cable. There would be no difference in pinout, but require that the power delivery device also outputs the timing pulse.