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Chapter 3: Standard Radar Operations 3-21
Moving, Reshaping or
Deleting a Guard
Zone
3. If necessary, use the trackpad to move the corner of the guard zone to the
required position. As you move the corner, the width and/or height of the
zone changes, but its general sector shape is retained.
Note: To create a 360° guard zone, rather than a sector guard zone, you can
either move the corner all the way round to form a circle, or move it back to
just the other side of the other outer corner.
4. Press ENTER to drop thecorner in itsnew position and redraw the zone, or
CLEAR to abandon the operation and return the corner to its previous posi-
tion.
The display shows this zone boundary as a short-dashed line (zone 1) or a
long dashed line (zone 2), and the cursor returns to normal control.
5. If required, use the context-sensitive cursor to reposition other corners/
sides of the zone in turn, as described below.
Moving, Reshaping or Deleting a Guard Zone
You can move, reshape or delete an existing guard zone using the context-
sensitive cursor.
➤ You use the context sensitive cursor to reshape a guard zone by placing the
cursor over thecorner or side that you wish to control (the label GRD appears
under the cursor). See Moving and deleting items with the context-sensitive
cursor on page 1-17.
Note: To convert a 360° guard zone back to a sector guard zone, take control
of any point on the circle, and move it to open up the circle.
➤ You can use the context sensitive cursor to delete a guard zone.
➤ You can also delete (turn off) a zone by pressing the ALARMS key, and then
pressing the appropriate guard zone soft key to toggle the setting from ON to
OFF.
Controlling Guard Zone Alarms
The guard alarm is triggered when a target enters a guard zone which exceeds
the target density threshold. You can set the threshold above which a new
target will trigger an alarm, and can also turn the alarm on or off.
When the alarm is triggered, the unit beeps and a text message is displayed.
➤ To clear the alarm, press any key (on the master or repeater display).
The alarm will sound again after 10 seconds, unless one or more of the
following happens:
GRD
ALARM
OFF ON
81186_3.book Page 21 Thursday, August 22, 2002 8:23 AM