I get asked this electronics question more than just about any other from customers who have a perfectly operating Sea Talk 1 network. Most often the question is related to the older ST-60 instruments that operate on the SeaTalk 1 network...
The conversion from ST1 to STng/NMEA 2000 is simple:
You just need a Raymarine E22158 ST 1 to STng conversion kit and either a male or female STng to NMEA 2000 drop cable:
Male STng to NMEA 2K = A06046
Female STng to NMEA 2K = A06045
A lot of folks don't realize that STng is essentially NMEA 2000 and once your ST1 data is converted into STng/NMEA 2000 the conversion & connection to the rest of the vessels N2K bus is simple..
The ST1 to STng converter is actually a small electronic signal converter that has operational software doing the conversion & its not just a bus or "fancy terminal strip" as some assume it is.
WARNING: I have seen a number of individuals physically damage equipment or disable a complete N2K system by trying to hard-wire an older ST1 network to STng or NMEA 2000 networks. YOU CAN NOT DO THIS! It requires proper language conversion.
Connection to a standard NMEA 2000 network will look similar to this:
This upgrade will run you slightly over $100.00 to get your SeaTalk 1 data converted over to NMEA 2000 based electronics.
Important Notes:
#1 If the E22158 converter is used only as a drop device to port ST1 over to N2K, and is not at the end of a back bone, or in a backbone, you would not use any terminators in the blue ports.
#2 If the E22158 converter is the end of a back bone, as shown here, a blue terminator would be used. Terminators are only used at either end of a back bone otherwise you would use Raymarine "blanking plugs" in drop ports or NMEA 2000 "blanking caps" to protect any unused future expansion ports.
#3 CAUTION: Only two terminators per N2K network. One at each end. I've seen DIY installations using in excess of 12 terminators and no, the systems were not working...
#4 If the ST1 network is already powered, and you are connecting to an already powered N2K network, you need to disconnected the red power feed wire for the ST1 network. Having two sources of power can create a potential for ground loops.
The conversion from ST1 to STng/NMEA 2000 is simple:
You just need a Raymarine E22158 ST 1 to STng conversion kit and either a male or female STng to NMEA 2000 drop cable:
Male STng to NMEA 2K = A06046
Female STng to NMEA 2K = A06045
A lot of folks don't realize that STng is essentially NMEA 2000 and once your ST1 data is converted into STng/NMEA 2000 the conversion & connection to the rest of the vessels N2K bus is simple..
The ST1 to STng converter is actually a small electronic signal converter that has operational software doing the conversion & its not just a bus or "fancy terminal strip" as some assume it is.
WARNING: I have seen a number of individuals physically damage equipment or disable a complete N2K system by trying to hard-wire an older ST1 network to STng or NMEA 2000 networks. YOU CAN NOT DO THIS! It requires proper language conversion.
Connection to a standard NMEA 2000 network will look similar to this:
This upgrade will run you slightly over $100.00 to get your SeaTalk 1 data converted over to NMEA 2000 based electronics.
Important Notes:
#1 If the E22158 converter is used only as a drop device to port ST1 over to N2K, and is not at the end of a back bone, or in a backbone, you would not use any terminators in the blue ports.
#2 If the E22158 converter is the end of a back bone, as shown here, a blue terminator would be used. Terminators are only used at either end of a back bone otherwise you would use Raymarine "blanking plugs" in drop ports or NMEA 2000 "blanking caps" to protect any unused future expansion ports.
#3 CAUTION: Only two terminators per N2K network. One at each end. I've seen DIY installations using in excess of 12 terminators and no, the systems were not working...
#4 If the ST1 network is already powered, and you are connecting to an already powered N2K network, you need to disconnected the red power feed wire for the ST1 network. Having two sources of power can create a potential for ground loops.