There is an issue with some Raymarine
DSM's. The backplane connector/header solder joints need to be re-soldered, this is a known issue and a quick fix. Also, some earlier software
revisions caused a problem. A quick call to your local Raymarine dealer should provide the solution.
The latest software
versions are noted here:
Raymarine is pleased to announce the immediate availability of two software releases.
E-Series Classic version 5.52 software provides a number of new features and improvements for MFD/Autopilot integration, Automatic Identification Systems (AIS), chartplotter functionality and general performance.
Version 4.11 software for the DSM30/300 Digital Sounder Modules in conjunction with E-Series Classic version 5.52 resolves SeaTalkhs communication issues between the two products.