Kongsberg Simrad CS90, Справочное руководство

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Speed
Select this check box to see the vessel's current speed on the top bar. The
information must be provided by an external speed log or a navigation system
connected to the CS90 system.
Bottom Depth
Select this check box to see the current water depth on the top bar. The
information must be provided by an external depth sensor (echo sounder)
connected to the CS90 system.
Roll
Select this check box to see the vessel's current roll movements on the top
bar. The information must be provided by an external motion sensor (motion
reference unit) connected to the CS90 system.
Pitch
Select this check box to see the vessel's current pitch movements on the top
bar. The information must be provided by an external motion sensor (motion
reference unit) connected to the CS90 system.
Bottom Bar
UTC Time
: Check the box to use Coordinated Universal Time (UTC). The time is
shown on the bottom bar at the bottom of the display presentation. When disabled, the
CS90 system uses local time.
Note
To enable UTC time, your CS90 system must be set up to accept the NMEA ZDA
datagram. The NMEA ZDA datagram contains the universal time code (UTC), day,
month, year and local time zone.
Coordinated Universal Time (French: Temps Universel Coordonné, UTC) is
the primary time standard by which the world regulates clocks and time. It is
one of several closely related successors to Greenwich Mean Time (GMT). For
most purposes, UTC is used interchangeably with GMT, but GMT is no longer
precisely defined by the scientific community. [...]
The current version of UTC is defined by International Telecommunications
Union Recommendation (ITU-R TF.460-6), Standard-frequency and time-signal
emissions and is based on International Atomic Time (TAI) with leap seconds
added at irregular intervals to compensate for the slowing of Earth's rotation.
Leap seconds keep UTC within 0.9 seconds of universal time, UT1.
Wikipedia, Copied June 2014
Functions and dialog boxes