[CA] [CA11] Power when interfacing seatalkng to NMEA2000

[Rom]

Hi Chuck,

Thanks for the answer. Below is an extract from one of the links you provided me:

"Interfacing a product's NMEA 2000 interface to SeaTalkng backbone

Raymarine offers adapters to mate Raymarine and third party products having a NMEA 2000 communications interface (DeviceNet Micro-C ... typically such devices are terminated with a male plug/socke) to a spur socket of a SeaTalkng backbone which has been constructed from Raymarine SeaTalkng networking components. Should the Raymarine or third party product's NMEA 2000 communications port or its NMEA 2000 spur cable feature a DeviceNet (M) or DeviceNet (F) socket or plug, then one the following adapters may be used to interface the product as a spur to a SeaTalkng backbone:
- A06045 / 15.7in (0.4m) SeaTalkng Spur to DeviceNet (F)
- A06075 / 39.4in (1.0m) SeaTalkng Spur to DeviceNet (F)"

I may have misread but it does suggest using a Seatalkng spur to device net cable to link a seatalkng network to a third party NMEA2000 network?

You have answered my question about the power source, only one power source for the entire network applied at the approximate mid-point.

On a related matter, an MFD will not provide power to a back bone, is this correct? So if the backbone is very small (i.e simply a 5-way connector with 1 spur going to MFD, 1 spur going to i70s, 2 terminators on the extremities) you still need to apply power ( in the example used, power applied to the last remaining spur node available on the 5-way connector)?

Thanks again Chuck.