[CA] Slave and master

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Jim,

Q1. Do I simply connect the two mfds with a Seatalk hs cable directly ?
A1. The two C-Series Widescreen MFDs may be interfaced to one another via any of the following means:
- appropriate length of SeaTalkhs (M) to SeaTalkhs (M) Cable
- a pair of SeaTalkhs (M) to RJ45 (M) cables which have been joined with a SeaTalkhs Crossover Coupler
- a pair of SeaTalkhs (M) to RJ45 (M) cables which have been joined with a SeaTalkhs Network Switch (retired) or SR6 Sirius Satellite Weather Receiver/Network Switch
- a pair of cable assemblies constructed RayNet(F) to RayNet (F) cable and a RayNet (M) Pins to SThs (M) Socket Adaptor Cable which have been joined with a HS5 RayNet Network Switch.

Q2. If the C90w can only handle 1 network connection, why are there 2 hs sockets on each mfd unit ?

A2. Each C-Series Widescreen MFD features two Ethernet network (SeaTalkhs) ports. Accordingly, within a system of two C-Series Widescreen MFDs, the MFDs may be interfaced to one another and to two additional compatible devices having an Ethernet communications interface. Reasons why one would utilize a Network Switch would typically include one of the following:
- the MFDs do not have a sufficient number of Ethernet network (SeaTalkhs / RayNet) communications ports to support interfacing each of the system's compatible devices which feature an Ethernet communications interface
- the vessel operator may desire to operate one of the MFDs while the other MFD is switched OFF
- system redundancy
- cable routing constraints (ex. inability to chase a SeaTalkhs (M) plug through a binnacle tube, etc.)