Furuno 1823C Radar Detector User Manual


 
2. RADAR OPERATION
2-30
The equipment then searches for targets inside the guard zone to determine
guard alarm type. If a target is found inside the guard zone, the guard zone type
becomes an “Outward guard alarm,” and any target exiting the guard zone will
trigger the audio alarm. If no target is found, the guard zone type becomes an
“Inward guard alarm,” and any targets entering the guard zone will trigger the
audio alarm. The guard alarm type is shown as G1(G2) IN or G1(G2) OUT.
Note 1: When the radar range is less than the guard zone range, the audio
alarm sounds and the alarm icon appears (in red). Press the [CLEAR]
key to silence the alarm. Press the [ALARM] key and the message
“GUARD1(2) IS OUTSIDE RADAR RANGE” appears. Reselect
appropriate range.
Note 2: If the network radar is set to standby while the guard alarm is active, the
guard alarm is cancelled. The guard alarm is redisplayed when the
radar is set to transmit again.
Note 3: If the network radar is set to standby while the radar picture is not
displayed, the alarm icon appears in red and the alarm sounds. Press
the [ALARM] key and the message “STBY MODE HAS BEEN
SELECTED. GUARD/WTCHMN CANCELED.” or
“GUARD/WATCHMAN CANCELED. STBY/TX SELECTED.” appears.
2.22.2 When the alarm is violated…
Any radar target violating the guard zone will flash, the audio alarm sounds, and
the alarm icon appears in red. Additionally the message “TARGET ENTERED
INTO GUARD1(GUARD2)” or “TARGET LEFT FROM GUARD1(GUARD2)” is
displayed at the bottom of the screen. Press the [CLEAR] key to silence the
alarm.
2.22.3 Cancelling the guard alarm
1. Press the [ALARM] key to show the ALARM menu.
2. Press the ERASE GUARD1 or ERASE GUARD2 soft key as appropriate.
3. Press the RETURN soft key to finish.