Chapter 3: Standard Radar Operations 3-21
Moving, Reshaping or
Deleting a Guard
Zone
3. If necessary, use the trackpadto move the corner of the guard zone to the
requiredposition.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. PressENTER to drop the corner in itsnew positionand redraw the zone,or
CLEAR to abandon the operationand returnthe corner to its previous posi-
tion.
The display shows this zone boundaryas 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 repositionother corners/
sidesof the zone in turn,as describedbelow.
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 placingthe
cursorover thecorner or sidethat you wish to control (the label GRD appears
underthe 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 deletea guard zone.
➤ You can also delete (turn off)a zone by pressingthe ALARMS key, and then
pressingthe appropriateguard zone softkey to toggle the setting from ON to
OFF.
Controlling Guard Zone Alarms
Theguard alarmis triggeredwhena targetenters a guard zone which exceeds
thetargetdensity threshold. You can set the thresholdabove whicha 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 repeaterdisplay).
The alarmwill sound again after 10 seconds, unless one or more of the
followinghappens:
GRD
ALARM
OFF ON
81186_3.book Page 21 Thursday, August 22, 2002 8:23 AM
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