AP-7
APPENDIX 2 ALERTS, IDS, MEAN-
INGS AND MEASURES
The FA-170 displays alerts at the bottom of the screen, as they occur. You can see all alerts,
current and past, from the [ALERT LIST] screen. The ID for each alert is different, depending on
whether there is a BAM (Bridge Alert Management) system or an AMS (Alert Management
System) connected.
The table on the following page shows the alert ID, displayed message, meaning and measures
for each alert.
Note 1:
Detection of RX malfunction
Note 2:
Detection of TX malfunction
MPU detects TX malfunction (ID:001) in the following cases:
Each active alert entry is accompanied by an alert icon, indicating the state of the alert. The alert
icons displayed on the FA-170 are listed in the table below with a brief description.
1)
Detection of TDMA RX malfunction
Frequency error
PLL chip on TRX-PWR board generates lock or unlock signal for synthesizer.
MPU watches and sets status flag which reflects data of ALR sentence.
ID 003 for RX1, ID 004 for RX2
2)
Detection of DSC RX malfunction
General error
A DSC error will occur when the FA-170 cannot detect a correct signal strength from
the DSC receive circuit 120 seconds.
1) The signal indicated "LOCK" is not received from the PLL chip on the TRX-PWR
board.
2) The voltage of monitoring signal on the TRX-PWR board is abnormal. The reason
for TRX-PWR board malfunction can be a hardware problem or software problem
causing a continuous transmission that exceeds 250 msec.
Note:
The hardware stops automatically because of the continuous transmission.
3) Invalid MMSI
4) An excessively high VSWR (Voltage Standing Wave Ratio) for the AIS antenna de-
tected.
Warning
Icon
Priority
Meaning
Active-unacknowledged
notification, icon is flashing.*
Warning
Active-silenced notification,
icon is flashing.*
*: Flashing at 0.5 second intervals.
Warning
Rectified-unacknowledged
notification, icon is flashing.*
Warning
Active-responsibility transferred
notification, icon is lit steadily.
Warning
Active-acknowledged
notification, icon is lit steadily.
Caution
Active, icon is lit steadily.
Icon
Priority
Meaning
