How To Set An Alarm; How To Select The Echo Signal Level That Triggers The Fish Alarm - Furuno GP-1670F Operator's Manual

7.14.1

How to set an alarm

1. Open the [ALARMS] menu and select [FISH ALARM], [FISH ALARM (B/L)], [FISH
SIZE ALARM] or [BOTTOM TYPE ALARM]. An alarm setting window appears.
Depth 0.0 ft
Range 5 ft
Fish Alarm (B/L)
2. For the alarms other than [BOTTOM TYPE ALARM], select [On] on the first line
of the alarm setting window.
3. Do one of the following depending on the alarm selected at step 1.
[FISH ALARM], [FISH ALARM (B/L)]: Set the start depth with [Depth]. Set the
alarm range with [Range]. See the figure below for details.
Alarm R Alarm Range
[FISH SIZE ALARM]: Set the minimum and maximum lengths at [Min] and [Max].
[BOTTOM TYPE ALARM]: Set the alarm referring to the illustration shown below.
Set the percentage of
probability (50-90%)
that triggers the alarm.
7.14.2

How to select the echo signal level that triggers the fish alarm

You can specify the echo signal level that triggers the fish alarm. Open the [ALARMS]
and [FISH ALARM LEVEL] menus. Select [High], [Medium] or [Low] as appropriate.
Off
Min: 5 inch
Max: 199 inch
Fish Alarm,
Fish Size Alarm
Surface
[Depth]
(from sea surface)
R
[Range]
Fish Fish Alarm h
Select the type of bottom for
which you want to be alerted.
7. FISH FINDER OPERATIONS
Off
Probability 70
Bottom Type Alarm
Alarm Alarm
Range Range
Fish Alarm for Bottom Lock
[Range]
[Depth]
(from bottom)
Bottom
7-15