Nav Speed Source

[richardt15]

I keep getting a warning that comes up on my plotter. Its a yellow box and says nv speed source changed. It comes up from time to time. How do I get this to stop? I had all the latest updates done by installer last month.
Thank you

 

[Magnetron]

It could be that it's periodically loosing it's GPS signal fix which in-turn would mean loosing SOG data causing the error. One recommendation would be to move the TZ unit so that it has a better view of the sky, or if it happens, look at the "sky view" to see what the sat situation is. If it's not possible to move the unit and/or too few satellites show up -- you may consider getting an externally mounted GPS antenna like a GP330b.

Just a thought -

- Maggy :sail