Furuno FAR21x7 & BB FAR28x7 Operator's Manual BB FAR28x7 Operator's Manual page 160

3. ARP OPERATION
Target full alarm
When the memory becomes full, the memory full status is indicated by
"TARGET-FULL(AUTO+MAN)" and the relevant indication appears on the
screen and a short beep sounds.
Manually acquired targets
The indication "TARGET-FULL(MAN)" appears at the screen bottom and a short
beep tone sounds when the capacity for manually acquired targets, as set on the
menu, is reached.
Automatically acquired targets
The indication "TARGET-FULL(AUTO)" appears at the screen bottom and a
short beep sounds when the capacity for automatically acquired targets, as set
on the menu, is reached.
System failure alarm
When the SPU Board receives no signal input from the radar or external
equipment, the screen shows both "ARP SYSTEM ERROR" associated with an
indication denoting offending equipment, also releasing an audible alarm. The
missing signals are denoted as shown below.
* Speed log signal
* Heading signal, Gyrocompass
Trigger signal from radar
Video from radar
* Bearing signal from radar antenna
* Heading pulses from radar antenna
* The alarm is available with or without ARP.
3-28
Missing Signal Indication
LOG
GYRO
TRIGGER
VIDEO
AZIMUTH
HEADLINE