Upgrade from E120 Classic to C125

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Stuart,

General diagram comments. The maximum amount of supported data sharing between these systems will occur if the E-Series Classic MFD is disconnected from the SeaTalk bus and is instead connected as a spur to the SeaTalkng backbone. The SeaTalk bus will be powered via the SeaTalkng backbone via the SeaTalk to SeaTalkng Converter. Please click here to view a FAQ addressing this subject. Depending upon the model of autopilot course computer installed onboard, maximum autopilot integration, to include Autopilot Control via the MFD, will occur if the autopilot course computer is disconnected from its NMEA 0183 interface to the system and is instead interfaced to the SeaTalk bus. Should the autopilot course computer (model not specified) feature a gyro, then it's 10Hz NMEA 0183 output port would be interfaced to the MFD(s) to supply them with stabilized fast heading data which will be prioritized over that communicated via the SeaTalk bus.

Q1. While running the radar on the E120, will I be able to see my waypoints?
A1. Should navigation be commanded (i.e. GoTo Waypoint/Cursor Position, Follow Route) on the a/c/e/eS/gS-Series MFD, then only the active waypoint being navigated to will appear on the E120's screen unless you have additionally programmed the E120 MFD with the waypoints stored in the c125 MFD.

Q2. Understanding that the C125 won't share cartography with the E120, can I run my existing cartography on the E120 from its CF Card slot?
A2. Yes

Q3. Do I really need the Actisense NGW-1-STD or can the C125 be connected directly to the VHF and ST8002 via NEMEA0183?
A3. See the General Comment above regarding the autopilot. Generally, VHF radios are interfaced the NMEA 0183 port of a MFD. Some Icom VHF radios require NMEA 0183 sentences featuring the $GP NMEA 0183 talker ID. Should this be the case for your VHF radio, then the Actisense NGW-1 (or a second SeaTalk to SeaTalkng Converter) would continue to be use to supply the VHF radio with GPS data.