C125 to RD418HD

[Chuck - Raymarine - Moderator]

We're almost out of ideas here. As indicated previously, the Digital Radar Cables terminated with RJ45 (M) plugs may may be interfaced to a SeaTalkhs Crossover Coupler, Straight-thru Ethernet Coupler, or Network Switch, which in turn may be interfaced to the MFD via an appropriate length of RayNet (F) to RJ45 Cable. To that end, Digital/HD/SuperHD radomes are tested by the Product Repair Center with both a switch and a crossover coupler when testing repairs. Should all variables/hardware remain the same except for the replacement of the crossover coupler with a switch, then attention should be paid to the possibility that one or both of the cables may be intermittent. The cables should be inspected to ensure that they have no obvious signs of damage and that any excess cable has been loosely coiled (3" minimum bend radius) and secured to a bulkhead. Subjecting these cables to a bend radius which is less than has been specified may result in permanent damage to the cable. Should nothing obvious be found with the cable, then a common CAT5 tester may be used to test the cable ... be sure to flex all cables in the area of the RJ45 connectors. Should no fault be found, then it is recommended that the radome and MFD be sent to Raymarine’s Product Repair Center to be bench tested/serviced.