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NAVIGAT X MK 1 Mod. 10 / SR-180 MK 1 Mod. 10
3
ALARMS AND ERRORS
3.1
Alarm System
The system continuously monitors the function of the gyrocompass and the integrity
of all input data.
3.1.1
Alarm Indication
When the system detects an error, the alarm buzzer is actuated. An alarm message
appears on the display, indicating the cause of the alarm. The user is prompted to
confirm the alarm state.
4 1
Press keys to confirm the alarm and clear the alarm message from the dis-
play screen. The alarm buzzer is muted simultaneously.
4 5
Press keys to mute the alarm buzzer. The alarm message remains on the
display screen until the alarm is confirmed.
As soon as the cause of the alarm is eliminated, the corresponding alarm
message is automatically cleared from the display and the buzzer muted
simultaneously.
Note:
Confirmation of an alarm does not clear the corresponding entry from the
internal error list (see 3.1.3).
alarm message displayed
FAILURE GYRO CURRENT
GYRO FAILURE
MAGN. COMPASS ERROR
POSITION ERROR
SPEED ERROR
HDG. DIFF. ALARM
MAX. ROT EXCEEDED
...
GYRO 1 FAILURE
. .
.
.....
F1 CONFIRM
.
cause
gyrosphere current <150 mA or >550 mA
local compass: follow-up system failure
second compass: no valid data from second gyrocompass
receiving no valid data from magnetic compass
receiving no valid data from position receiver
receiving no valid data from speed log
heading difference exceeds alarm threshold
rate of turn exceeds alarm threshold
056310
3-149 MK110ENG.P65
Page 3-01
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