Operator's Manual

5-1
5. ALERTS
“Alert” is a generic name for a notice to any unusual or potentially dangerous situation
generated within the system. There are two types of alerts, warning and caution.
Warning: Conditions or situations which require immediate attention for precautionary
reasons.
Caution: Awareness of a condition which continues to require attention out of the or-
dinary consideration of the situation.
5.1 Overview
The GS-100 has ten types of alerts as follows:
Note 1: When a warning is not acknowledged within three minutes, the warning is re-
peated.
Note 2: When the alert mode is Alert I/F 1 or Legacy (see paragraph 8.4.8), the last
three digits of the alert ID number for the ALR output sentence (see page AP-17) is
displayed.
When an alert situation occurs, the buzzer sounds (except for a caution) and the name
of the alert appears at the bottom of the display. Also, the values and indication for the
following items are displayed in yellowish orange for a warning, yellow for a caution.
• 3-axis speed
• Heading
• Calculation state (DR, Stopped, SYS FAULT)
• Position (only when the status indication is "No Fix")
• Time and date (only when the status indication is "No Fix")
ID Message Type Meaning
210 HDOP exceeded Caution The value of HDOP (Horizontal Di-
lution of Precision) is 4 or above.
HDOP threshold being permanent-
ly set to 4.
211 No calculation of position
Abbreviated messages:
No calculation of POSN
Caution The signal from core is not received
for three seconds.
212 Loss of position Caution No positioning data.
240 System fault Caution Can not communicate with GS-
1001.
430301 Dead-Reckoning Warning The heading is calculated using
ROT, not GPS position.
430302 Output Stopped (HDG) Caution The heading output stopped.
430311 Output Stopped (Speed) Caution The speed output stopped.
430321 Rate gyro broken down Caution Rate gyro malfunction
430322 Accelerometer broken down Caution Accelerometer malfunction
430950 Communication error with
BAM
Caution Communication error with alert
management system.