Raymarine a50 用户指南

Note: If a fishfinder is not detected, the alarm setup windows are 

greyed out.

Offtrack Alarm
Switches the off-track alarm on or off

OFF
ON

Offtrack Alarm XTE
If the Offtrack Alarm is set to ON, an alarm is triggered 
when the XTE for any current navigation, exceeds the 
value that you have specified.

0.3nm
0.01 - 9.99nm
(or equivalent in the 
selected Distance 
Unit)

Fish Alarm
Switches the fish alarm on or off.

OFF
ON

Fish Alarm Sensitivity
If the Fish Alarm is set to ON, an alarm is triggered 
when the fish return strength reaches the sensitivity that 
you specify.

5%
10% - 100%

Fish Alarm Depth Limits
If the Fish Alarm and this alarm is set to ON, an alarm is 
triggered (2 beeps) if any target meets the sensitivity 
level and is within the Shallow Fish Limit and Deep Fish 
Limit that you specify.

OFF
ON

Shallow Fish Limit
Specifies the lower value for the Fish Alarm Depth LImit.

2ft
(0002ft - 1000ft)

Deep Fish Limit
Specifies the upper value for the Fish Alarm Depth LImit

1000ft
(0002ft - 5000ft)

Shallow Depth Alarm
Switches the shallow depth alarm on or off.
If a DSM is not connected, this cannot be set.

OFF
ON

Shallow Depth Alarm Value
If the Shallow Depth Alarm is set to ON, an alarm is trig-
gered if the depth drops below the value you specify.

5ft 
(0002ft - maximum 
range of transducer)

Deep Depth Alarm
Switches the deep depth alarm on or off.
If a DSM is not connected, this cannot be set.

OFF
ON

Deep Depth Alarm Value
If the Deep Depth Alarm is set to ON, an alarm is trig-
gered if the depth exceeds the value that you specify.

81314-1_A Series Reference Guide.book  Page 133  Thursday, August 28, 2008  9:23 AM