Setting A Target Alarm Zone - Furuno FR-1500 MARK-3 Series User Manual

1.22 Setting a Target Alarm Zone

CAUTION
The target alarm feature should never be relied upon as the sole means for detecting the risk of
potential collision. The operator of a ship is not relieved of the responsibility to keep lookout for
avoiding collisions, whether or not the radar is in use.
1.22.1 Introduction
There are two independent Target Alarm Zones. NO. 1 zone has a default coverage of 3.5-4 nm
and is adjustable within 3.0 to 6.0 nm. NO. 2 zone may be adjusted anywhere when the NO. 1 TAZ
is valid. On the R-type, the outer and inner boundaries can be set at any distance. In any radar
type, the sector of the zones can be set anywhere between 0 and 360 degrees in any direction.
When the radar is equipped with Automatic Tracking Aid (ATA) or ARPA, a Guard Zone alarm is
also available.
To set target alarm zones:
1. Press the [MENU] key and press the [3] key twice to show the TGT ALARM menu.
TGT ALARM
1. AREA NO.
2. MODE 1
3. MODE 2
2. Press the [1] key to select guard zone to use NO 1 or NO 2.
3. Press the [ENTER/SELECT] key.
4. Press the [MENU] key.
5. Place the cursor (+) at point "A" (see figure below) using the trackball. Press the [TGT
ALARM ] key. SET TA1(2) appears at the lower-right corner on the screen. When both
alarms are prepared the active alarm is circumscribed.
6. Move the cursor (+) to point "B" and press the [TGT ALARM] key again. Then, an echo
watch zone as illustrated is created and the label TA1 (or 2) appears instead of SET TA1
(or 2) at the lower-right corner of the screen.
000
350
340
330
320
310
A
300
290
280
270
260
250
240
230
220
210
200
190
180
In R-type, you can use NO. 1 as TAZ by selecting IN
NO 1 NO 2
and NO. 2 as an Anchor Watch by selecting OUT. In
IN OUT
IMO type, only IN is available.
IN OUT
TAZ
010
020
030
040
050
060
070
B
080
090
100
110
120
130
140
150
160
170
Target alarm zone (TAZ) can be set in any sector
between 3 and 6 nm on IMO-type, and anywhere on
the R-type.
When the radar has the ATA board ARP-17, a total of
3 alarm zones (two TAZs and one GZ) may be set.
The 2nd TAZ is available only when the 1st TAZ is
valid.
-1.17-