Chapter 6
MDC-3560P/3510P Series
USING THE MENU
6-16
93142002-01
6.1.17.7
Setting the Guard Zone
The Guard Zone Alarm warns the operator an entry of a target to a preset alarm
zone. When the target enters the zone, a flashing equilateral triangle with its apex
down is shown to mark the target. (Refer to Figure 5.4) At the same time, the GZ
sign flickers and an audio alarm sounds. To stop the audio alarm, press the AUDIO
OFF key.
To set up the position of the Guard Zone.
(1) Press the ALARM (GZ) key. This allows the EBL and VRM controls to be used for
moving the Alarm Zone in azimuth and range, respectively.
(2) Move the EBL control to set the position of the Guard Zone in azimuth. The
center bearing of the Guard Zone will be displayed in the upper right corner of
the
screen.
(3) Move the VRM control to set the position of the Guard Zone in range. The
distance of the outer edge of the Guard Zone will be displayed in the same place
as the bearing display.
To set up the depth and width of the Guard Zone
(Reference drawing: Figure 6.7 The outline of the Guard Zone Alarm)
(4) Press and hold the HL OFF key and rotate the EBL control to set up the width of
the alarm zone.
(5) Press and hold the HL OFF key and rotate the VRM control to set up the depth of
the alarm zone.
(6) Press the ENT key to fix the settings. The Guard Zone will be shown on the
screen.
Caution:
In the following case, the alarm function will become inoperative.
The ALARM range and bearing displays accordingly flicker to notify that the
function is inoperative.
(1) When the alarm zone is set lower than 0.5 NM.
(2) When the alarm zone is set beyond the viewable screen area caused by an
improper range scale setting such as, the range scale is too short, off-centering
is too much, etc.
