Raymarine RayTech RNS 5.0, User Manual

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Chapter 9: Using RNS advanced features 95
9.5 How do I use DataTrak?
With RNS connected to your boat’s instruments you can use DataTrak to record any of
your instrument channels and display the collected data as a time-based graph. This is
useful for looking at trends, averages, real time data and comparing instrument data.
Information can be displayed in default or customized pages.
DataTrak charts can be resized to fixed time intervals for quick data capture. This is
invaluable to you in capturing data for target and polar calculations or in trying to
ascertain minute changes in any recorded variable overtime. RNS allows for the display
of DataTrak wand times. When capturing data from DataTrak, vertical frames can be
inserted in the chart to delineate start and end points for the data capture. These lines,
called wands, represent a particular segment of time on the graph. The time interval is
reported at the top of the graph, in the blue status bar.
You can create graphs to display the following information:
Air Temp Used to identify air temperature.
Awa calibration Used to set the alignment of the masthead wand.
BoatSpgSOG Displays boat speed and Speed over Ground.
Depth Displays the depth below the transducer.
HdgCOG Displays Heading and Course Over Ground.
Polar create Used to identify good polar points.
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