Raymarine Raydata Installation And Operating Handbook
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Contents
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20 RAYDATA Installation and Operation HandbookTrend ArrowTo the right of the single-line data value, a trend arrow is provided onthe main depth and speed displays.The direction of the arrow indicates whether the value is rising or falling.For the Depth function, an up-arrow indicates that the bottom is comingup: that is, the depth is decreasing.The length of the trend arrow indicates the speed with which the value ischanging. The arrow consists of up to six segments. The moresegments are displayed, the greater the difference between the currentvalue and that shown in the previous update of the display.Additional InformationAdditional information may be shown along the bottom line of the page,such as:• Whether you can display a different sub-page by pressing the ÙÙÙÙÙkey: this is indicated by a Ù symbol in the lower left corner of thescreen• Which key(s) to press to perform an operation such as changing orresetting a value (see Chapters 4 and 5)• An alarm warning message (see Chapter 5)• Information relating to the data, such as the depth offset• A bargraph providing a graphical indication of, for example, steeringdeviation or rudder angleNote that the steering bargraphs are not linear: the first segment isdisplayed with only a small deviation, the second when the deviation ismore than doubled and, when five segments are already displayed, avery large increase in deviation is required before the sixth is displayed.3.5 Changing the Information DisplayedYou can display any of the information available to the RayData usingthe five keys.For example, when the main depth page is displayed, you can use theDEPTH key to cycle through three main pages as follows:1. With the main depth display on the screen, as shown on page 18,press DEPTH to display the sea temperature. |
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