CA42/50/52 Glossary of terms Appendix A
154
UTC – Universal Time Coordinates, which is equal to standard time in London
(GMT). UTC is not affected by the local summertime adjustments.
Velocity – speed towards approaching waypoint.
Waypoint advance - will automatically shift to the next waypoint in the route
and provide new steering details (Route navigation).
Waypoint name – a name can be added to each waypoint for easy identification.
WPplot – instant storage of actual position as a waypoint.
XTE – Cross-Track-Error (-Distance), measured magnitude of the position error
perpendicular to the intended track line.
Echosounder section:
Alarms – can be set to sound a “beep” if the echosounder detects a target above
(shallower than) a minimum alarm depth or below (deeper than) a maximum
alarm depth. The CAXX allows you to set the alarm depths and to enable or
disable both the minimum and maximum depth alarms.
A-Scope – a method of displaying the echosounder information. In A-Scope
mode, the echoes are displayed in a “bar-graph” format, with stronger echoes
displayed not only in the color representing their target strength, but also in a
width representing their target strength.
Color threshold – the color threshold function allows the “weaker” targets and
noise which may be shown on the display screen to be eliminated from the
display. These targets are usually shown in the weaker target colors such as blues
and greens. The Color threshold allows you to choose not to display the blues, or
the blues and greens, etc. Doing this will leave only the stronger targets on the
display screen.
Depths – DK = Depth below keel, DS = Depth below surface, DT = Depth below
transducer.
Echogram background color – is the color shown on the CAXX in the event no
target is present. There are three colors to choose from, white, blue or black,
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