Furuno USA Inc 9ZWRTR102 Manual Do Utilizador
3. AIS OPERATION
3-7
3.7
Lost Target
When AIS data is not received from a target within 3-5 report intervals (see Note 2),
the target symbol changes to the lost target symbol (flashing). No audio or visual alarm
is given for a lost target.
the target symbol changes to the lost target symbol (flashing). No audio or visual alarm
is given for a lost target.
Note: The AIS data transmission interval depends on target’s speed. For example, the
data is transmitted every 10 seconds on ship speed of 0 to 14 knots and every two
seconds on the ship speed of more than 23 knots. For details see the operator’s
manual of the AIS transponder.
data is transmitted every 10 seconds on ship speed of 0 to 14 knots and every two
seconds on the ship speed of more than 23 knots. For details see the operator’s
manual of the AIS transponder.
3.7.1
Lost target filter
If there are a lot of AIS targets in your area, the lost target alarm may sound frequently.
In this case you may wish to have the alarm ignore lost targets whose range, speed,
class or length are below the threshold value you specify.
In this case you may wish to have the alarm ignore lost targets whose range, speed,
class or length are below the threshold value you specify.
1. Right-click the [AIS] icon to show [AIS TARGET MENU].
2. Click [AIS LOST FILTER].
3. Click [AIS LOST FILTER] in the [AIS LOST FILTER] menu.
2. Click [AIS LOST FILTER].
3. Click [AIS LOST FILTER] in the [AIS LOST FILTER] menu.
4. Click the target alarm to enable.
[OFF]: Disable the alarm.
[FILT]: Get the alarm against the targets whose criteria meet the settings on the
[AIS LOST FILTER] menu.
[ALL]: Get the alarm against all lost targets.
[FILT]: Get the alarm against the targets whose criteria meet the settings on the
[AIS LOST FILTER] menu.
[ALL]: Get the alarm against all lost targets.
5. Click [MAX RANGE VALUE] and [MIN SHIP SPEED VALUE] as appropriate,
referring to the description below.
[MAX RANGE], [MAX RANGE VALUE]: Any AIS lost target beyond the range set
here is not shown.
[MIN SHIP SPEED], [MIN SHIP SPEED VALUE]: Any AIS lost target slower than
this setting is not shown.
[EXCEPT CLASS B]: Select [ON] to prevent trigger lost Class B AIS lost target.
[MIN SHIP LENGTH], [MIN SHIP LENGTH VALUE]: Any AIS lost target whose
length is shorter than this setting is not shown.
[MAX RANGE], [MAX RANGE VALUE]: Any AIS lost target beyond the range set
here is not shown.
[MIN SHIP SPEED], [MIN SHIP SPEED VALUE]: Any AIS lost target slower than
this setting is not shown.
[EXCEPT CLASS B]: Select [ON] to prevent trigger lost Class B AIS lost target.
[MIN SHIP LENGTH], [MIN SHIP LENGTH VALUE]: Any AIS lost target whose
length is shorter than this setting is not shown.
3.7.2
How to acknowledge a lost target
1. Click the [AIS] icon to show [AIS TARGET MENU].
2. Right-click [ACK LOST TARGETS].
3. Click [YES]. The lost target disappears from the screen.
2. Right-click [ACK LOST TARGETS].
3. Click [YES]. The lost target disappears from the screen.
Activated target
Lost target
[AIS TARGET MENU]
1 BACK
2
2
SLEEP ALL TARGETS
NO/YES
3
3
ACTIVATE ALL TARGETS
NO/YES
4
4
ACK LOST TARGETS
NO/YES
5
5
[AIS DISP FILTER]
6
[CPA AUTO ACTIVATE]
7
[AIS LOST FILTER]
[AIS LOST FILTER]
1 BACK
2 AIS
2 AIS
LOST
FILTER
OFF/FILT/ALL
3 MAX
3 MAX
RANGE
OFF/ON
4 MAX
4 MAX
RANGE
VALUE
03.0km
5
5
MIN SHIP SPEED
OFF/ON
6
MIN SHIP SPEED VALUE
00.0km/h
7
7
EXCEPT CLASS B
OFF/ON
8
8
MIN SHIP LENGTH
OFF/ON
9
9
MIN SHIP LENGTH VALUE
000m
Click