19. Navigation Sensors
19-12
19.7.1 Indication of gyro source
Information area
Possible gyro source indications, which appear at the upper right corner, are as follows:
• (1): Heading used by the ECDIS is from Gyro 1.
• (2): Heading used by the ECDIS is from Gyro 2.
• (cor1): Heading used by the ECDIS is from Gyro 1 and that gyro correction has been used
• (cor2): Heading used by the ECDIS is from Gyro 2 and that gyro correction has been used
• (mg1): Heading used by the ECDIS is from Gyro 1 which is a magnetic compass*
• (mg2): Heading used by the ECDIS is from Gyro 2 which is a magnetic compass*
* Magnetic heading cannot be used with he Track Control System.
HDG (2) 071.0
°
SPD (WT) 15.6 kn
SB (POSN) 0.0 kn
COG (POSN) 071.0
°
SOG (POSN) 15.6 kn
59
°
31.206'N
024
°
36.731'E
WGS 84
DGPS
Above is an example where "First priority Gyro selection" switch is in state Gyro 2.
Sensors dialog box
The SPD/CRS page of the Sensors dialog box shows gyro indication as follows:
• (active): The system uses value from this gyro which is selected by "First priority Gyro Select selector".
• (backup): The system uses value from this gyro which is NOT
selected by "First priority Gyro Select selector"
In the example screen at left in the figure below, heading information from Gyro 2 is used by the Autopilot
FAP-2000 and the ECDIS. The indication "(active)" in the Gyro 2 field indicates that the system uses operator-
selected gyro as source of heading (State of "First priority gyro selector" switch). In this case the text "(2)"appears at
the upper right corner.
In the example screen at right in the figure below, heading value from Gyro 1 is lost. In this case, the system
automatically selects Gyro 2 to be used as the source of heading. The indication "(backup)" in the Gyro 2 field
means that a backup gyro is used.
kn
kn
(CALC)
(CALC)
Rate Gyro
Rate Gyro
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