Raystar 130 retro kit to C80

[Chuck - Raymarine - Moderator]

Doug,

Q1. One curiosity I came across on my system is while checking for power feeds in to my terminal strip I found that with the c80 powered up there was
10.45 volts being supplied from the c80 to the terminal strip. With the auto pilot powered up there was 12.1 volts being supplied to the same terminal strip. The RS130 seems to perform well with either or both of these power sources turned on.
My question is, should there be 2 separate power sources coming in to this terminal strip? And also, why would there only be 10.4V coming from the c80 and is the lower voltage good for the gps to operate on?
A1. The C & E-Series Classic MFDs were designed with a powered SeaTalk port to create a simple installation solution for small vessel applications to where the MFD and GPS sensor were the only devices having a SeaTalk communications interface. However, the power level produced by the MFD's SeaTalk port was insufficient to power any device other than a SeaTalk GPS sensor. In practice, this did cause some confusion for customers and installers having larger systems who either forgot to power the SeaTalk bus or neglected to switch on the device or circuit responsible for powering the SeaTalk bus. Later, Raymarine introduced a best practice for installation of these MFDs in which the SeaTalk power (red) lead of the SeaTalk cable connecting the MFD to the SeaTalk bus was not to be used. While it wouldn't typically cause a problem within the system, this best practice is still recommended.