B&G Zeus 12 - Manual (Page 77)

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Selecting GRIB Forecast Time
The GRIB file contains forecast information for a set number of days. It is possible to
animate the weather data and move forward in time to see the predicted forecast for a
specific time and date. These time scales vary depending on the file you are using.
Once animate is selected, time and speed dials will appear on the right hand side of the
screen and a data panel will appear in the bottom left corner.
Data Panel
Press the rotary knob to change between the time and speed dials. Press the enter key
to close animation and return to the chart.
Time Dial
The time dial enables you to manually change the time and date of the GRIB overlay
and see the predicted forecast for that specific time. The time increments may vary
depending on the GRIB file.
Once animate has been selected turn the rotary knob to adjust the time dial which will
change the time and date of the overlay. As you move the dial it is likely that you will see
the GRIB symbols change on screen reflecting the shift in wind speed and direction.
The time shift shown in the time dial will be relative to the current time as provided by a
GPS unit connected to Zeus or via H-Link.
As a GRIB file ages it will be possible to see the historic data represented in minus hours
until the file becomes outdated. Once it is outdated it reverts to the time frame being
relative to the earliest forecast in the file.
If no current time is provided via GPS then the GRIB file time is only relative to the
earliest forecast in the file and will not show a real time weather representation
MENU WIN
Animation
Time & Speed Dials