Furuno 1833, 1943, 1933 manual When the alarm is violated…, Cancelling the guard alarm

2. RADAR OPERATION

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. 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 audio 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.

2.22.2When the alarm is violated…

Any radar target violating the guard zone will flash, the audio alarm sounds, and the alarm icon appears. 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. When this is done, “G1(G2) ACK” replaces G1(G2) IN(OUT) at the top right corner of the display. This means the alarm is temporarily deactivated. To reactivate the alarm, press the SET GUARD1 or SET GUARD2 soft key as appropriate.

2.22.3Cancelling 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.

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