Happy Mariner
New Member
Yes, the Data Marine DM 600 unit that came with my 390 measured all three parameters. As a side note, I'm happy to report that still does! As I was pulling the unit, I found light corrosion at its fuse holder. This apparently reduced the voltage to the point where the unit would turn on, but the digital display would randomly loose segments. Just rotating the fuse in its holder solved the display issue. I wish all boating issues were that easy to resolve!