Furuno GP-3500F - Manual (Page 199)

11. VIDEO SOUNDER OPERATION
11-27
Reviewing the past picture
This feature is only available with the single frequency display.
1. Press the [ENTER] knob.
The picture freezes, and “REPLAY” appears at the top of the screen.
Depending on your selection on menu, the picture is shown as below.
PLAY: Rotate the [ENTER] knob counterclockwise to scroll the past picture.
S-DOWN: The entire past picture appears.
2. Press the [ENTER] knob to return to the normal operation.
Note1: You may escape from the REPLAY mode by pressing the [SHIFT],
[RANGE], [GAIN] or [PROG] key.
Note2: When pressing a numeric key, an appropriate mark is entered at the
position of time marker on ship’s track on the plotter diplay. At the same
time, a horizontal line is entered at time markers position. (16 colors: the
second color from the top, 8 colors: the top of the color bar) For the
[WAYPOINT] key, the waypoint is entered to the position of time marker
on own ship’s track. For time marker, see Chapter 11.5.
11.15 Alarms
The sounder section has two conditions which generate visual and audible
alarms: fish alarm (normal) and fish alarm (bottom lock). The alarm icon appears
and the audible alarm sounds when an alarm setting is violated. You can silence
the audible alarm by pressing the [CLEAR] key, but the alarm icon stays on the
screen until the cause of the alarm is cleared or the alarm is deactivated.
AUTO C
58.6
m
17.6
0
20
40
60
80
5.6 °
C 10.0 kt FISH
1'50"
50k
Violated alarm (blinking)
FISH: Appears at the right side
FISH(B/L): Appears at the left side
Alarm marker
Right-side: Fish alarm
Left-side: Fish alarm (B/L)
Alarm icon
Alarm range
Starting point
Single frequency display, fish alarm is violated
Note: When multiple alarms occur, the audible alarm sounds for the last alarm.