Bottom Alarm; Water Temperature Alarm; Turning On/Off The Expansion Range Marker - Furuno GP-1610CF Operator's Manual

4. Press s or t to select NORMAL or B/L
(Bottom Lock).
5. Press to send the cursor to the second
line (Range or B/L).
6. Key in the depth desired.
7. Press the ENT key.
8. Press the MENU key.

3.18 Bottom Alarm

The bottom alarm sounds when the seabed
depth is narrower than the alarm range set.
When the bottom echo enters the alarm range
set the audible alarm sounds and the alarm
icon and the indication DEPTH appears.
You can silence the audible alarm with the
CLR key. The DEPTH indication remains on
the screen until the bottom echo goes out of
the alarm range.
1. Press the MENU key.
2. Press the [5] key to select ALARM
SETUP.
3. Press to select BOTTOM on page 2.
4. Press t to select ON.
5. Press to send the cursor to the fourth
line (Range).
6. Key in the range desired.
7. Press the ENT key.
8. Press the MENU key.

3.19 Water Temperature Alarm

The water temperature alarm sounds when the
water temperature is within (or over) the pre-
set temperature range. This alarm is useful for
searching for specific species of fish, since
each species of fish has its own habitable water
temperature. (This alarm requires connection
of a water temperature sensor.)
When the water temperature becomes within
(or over) the alarm range the audible alarm
3-8
sounds and the alarm icon
tion TEMP appears on the display. The indi-
cation remains on the display until the
temperature is no longer in the alarm range.
1. Press the MENU key.
2. Press the [5] key to select ALARM
SETUP.
3. Press or to select TEMP.
4. Press s or t to select WITHIN or
OVER.
5. Press to send the cursor to the eighth
line (Temp).
6. Key in the temperature desired.
7. Press the ENT key.
8. Press the MENU key.
3.20 Turning On/Off the
Expansion Range Marker
The expansion range marker appears in the
normal display picture in the bottom marker
and bottom zoom displays and marks the area
which is expanded in the bottom marker and
bottom zoom pictures. You may turn the
marker on or off as follows:
Fish school
Marker zoom
100
display
150
162
200
CSE 180.0°
DEP 162m
POS 34° 26.245' N
Figure 3-19 Marker zoom display
1. Press the MENU key.
2. Press the [0] key to select SYSTEM
MENU.
3. Press the [3] key to display the
SOUNDER SETUP menu.
and the indica-
Normal
0
display
Fish
school
50
VRM
(white)
90.0
100
This part
150
is zoomed.
200
200k
Expansion
2D
SPD 16.8kt
range
13:41
TMP 16.0 °C
marker
135° 41.232' E
(yellow)