Raymarine bi-data

[Jimbob]

Hi all

Hope you are all well. I have a question related to a Raymarine bi-data unit.

It was already fitted on the boat and as such it was the one handbook that was not supplied when I purchased the boat (secondhand). It has 3 buttons

One with an arrow up
One with an arrow down
One with a dot on it

Anyway, I have been able to scroll using the up/down arrows. However I don’t know how to change any data, e.g. min depth of water. I have tried all sorts of permutations but to no avail. Does someone know how to use before I call Raymarine

[Jimbob]

I have found the user guide on Raymarine website, easy to use when you have the book, impossible without

[chrisallse]

You should be able to download a PDF instruction book from http://www.raymarine.com/raymarine/