Kongsberg SIMRAD IS15 Expander, Общее руководство

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Operation of IS15 Combi
20220760G
19
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The lower screen section displays ‘LOCAL’ time in
hours:minutes:seconds. The Local Time is only given if a
suitable GPS data input is available. The GPS system runs on
Universal Co-ordinated Time (UTC), which is the same as
Greenwich Mean Time (GMT). The display can be set to
local time.
UTC offset
Screen 3 has a sub screen for setting of the UTC offset.
To change the UTC offset follow the procedure in Figure 2-2,
page 10. It can be changed in steps of 30 minutes.
Screen 4
HEADING
COURSE OVER GROUND (COG)
SPEED OVER GROUND (SOG)
•
The upper screen section displays ‘HDG’ (Heading) in
degrees and the unit, ‘M’agnetic’ or ‘T’rue. The heading may
be referenced to either Magnetic or True North as set in
paragraph 7.9 Screen 3 “Bearing Unit”.
Note ! The selection of ‘M’ or ‘T’ will set the reference for all the
bearings that are shown by the instruments, including the
Waypoint Bearing, the Course Over Ground, and the Wind
Direction. If only one of the two readings (‘T’rue or ‘M’agnetic)
is available, and the other one is required, the instruments can
convert from one to the other. This will, however, not change the
displayed unit. See ‘MAG. VARIATION’ below.
•
The middle screen section displays ‘COG’, Course Over
Ground similar to screen 2.
•
The lower screen section displays ‘SOG’, Speed Over
Ground value and the unit, (e.g. ‘kts’).
Screen 4 has a sub-screen for setting the magnetic variation.
MAG. VARIATION
The IS15 instruments automatically read the Magnetic Variation
compensation from a connected GPS. The compensation is
presented on the screen. You are not allowed to adjust the
compensation from the GPS. If you press the
button and
hold for 2 seconds the screen just flashes AUTO and returns to
show the compensation from the GPS.
If a GPS is not connected you will be able to enter the magnetic
variation manually using the
and buttons.