Section 6    Target Tracking and AIS  6-60 
 
6.7.4  Target Tracking function alarm (TT Data) 
If some failure occurs in input signals or the processor circuits, an alarm will be issued. If an alarm is 
issued in the Target Tracking function, [TT(Data)] is displayed in the alarm indication and nothing is 
displayed in the indication of the target tracking information. Its cause is inferred that the Target 
Tracking function is malfunctioned. In that case, please consult with our branch office, branch shop, 
sales office, or our distributor in your district to repair it. 
 
Target Tracking function Alarm 
 
Alert characters  Alarm sound  Condition 
TT (Data) 
Beep sound 
(pipi) 
If the Target Tracking function has some abnormal 
condition, this alarm issues. 
 
 
6.7.5  Gyro set notification (Set Gyro) 
The GYRO I/F in this system receives signals from a gyro. Even if the power is turned off, the system 
will follow up the gyro. However, the system stops the follow-up operation when the power of the 
master gyro is turned off or when any trouble occurs to the line. When the power of the master gyro is 
recovered, the [Set Gyro] notification will be issued. 
When this notification is issued, set the true bearing value of the gyro. For the details, refer to “5.4.13 
True bearing”. 
 
Gyro Set Notification 
 
Alert characters  Alarm sound  Conditions 
Set Gyro  Beep sound (pi-) 
The signals from the gyro are stopped, but the gyro is 
recovered.