I stumbled upon a discussion of this in a long series about boat electrical systems design.
Start at 3:30
https://www.youtube.com/watch?v=LlKZi-EUjRY
Voltage drop from improperly sized wiring to the plotter, or pulling current for other purposes from the same wire.
It seems timely regarding board discussions of a number of vexing chart plotter issues. Sure the issue might be a flaw in the plotter. It might be an installation issue. This just opens the mind to additional possible causes.
PS: Its a good series by the way. Very long, but chock full of nuggets about all the ways you can kill yourself or someone else by improperly wiring or fusing a DC circuit.
Start at 3:30
https://www.youtube.com/watch?v=LlKZi-EUjRY
Voltage drop from improperly sized wiring to the plotter, or pulling current for other purposes from the same wire.
It seems timely regarding board discussions of a number of vexing chart plotter issues. Sure the issue might be a flaw in the plotter. It might be an installation issue. This just opens the mind to additional possible causes.
PS: Its a good series by the way. Very long, but chock full of nuggets about all the ways you can kill yourself or someone else by improperly wiring or fusing a DC circuit.