Below please find the options to connect a CMM4 to the 450i radio:
Option 1: Purchase the "N000045L001A - Ethernet Cable Adapter for CMM4" from your reseller. This dongle makes the proper pin swap to allow normal straight-thru Ethernet cables to be used to connect the CMM4 port to the main port of the 450i radio.
Option 2: Create your own cable. This cable will allow you to power a 450i radio from a CMM4 (as long as it has a suitable 56V power supply), as well as achieving 1PPS Sync over power, and Ethernet connectivity.
The image below shows the required pinout for proper functionality. It is a standard T568B-wired cable, but pins 5 and 7 must be crossed over as shown (i.e. the blue/whie stripe (pin 5) is swapped with brown/white stripe (pin 7) on ONE END of the cable).
For either connection method, the following Software Configuration parameters must be set.
The 450i must have the following settings configured:
General Config Page > Sync Source > AutoSync or AutoSync + Free Run
The CMM4 must have the following settings configured:
Port Configuration > Device Type: 56V (for the port you intend to use) > Power: On
CMM Configuration: Select the appropriate/available CMM sync source