Furuno FE-700 - Manual (Page 18)

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Monochrome (amber) is the default setting. The
Strata display contains multiple colors depending
on the reflectivity from underwater objects of the
sounding pulses. Red is strongest, followed by
brown, orange, yellow, blue, and light blue.
1.11 Shallow Depth Alarm
The shallow depth alarm sounds when the
seabed is shallower than the preset depth. The
default in the NAV position is 20 m. You can
adjust the alarm depth as below:
Activating/deactivating the alarm
1. Press the MUTE ALARM key to display the
depth alarm setting window.
DEPTH ALARM
10 m
- / +: To set option
2. Press the [+] or [-] key to change setting
depth. The setting is shown digitally at the
top of the screen and graphically key the
depth alarm line.
When the alarm is activated, the message
“SHALLOW DEPTH ALARM” is displayed at the
center on the screen.
Note: When the draft setting is –10.0 to –0.1
in the DBS mode, the shallow depth alarm setting
will show a minus value. At this time, the alarm
setting value indication shows “****” and the
alarm function is disabled.
Acknowledging the alarm
You can silence the alarm by pressing the MUTE
ALARM key. The message “SHALLOW DEPTH
ALARM” moves to upper side of the screen.
1.12 Draft
It is necessary to set the draft to use the DBS
display mode, which shows depth below surface.
1. Select DBS with the MODE control.
“Confirm and set ships draft to use DBS
mode.” appears.
2. Press the DRAFT key to display the draft
setting window.
0.0 m
-/+: To set option
3. Press the [+] key to increase the setting
depth and [-] key to decrease it. The setting
depth is -10 to 30 m in steps of 0.1 m.
The above window disappears in 10 seconds.
The draft setting is displayed at the upper right
corner and the range scale is shifted according to
the draft setting.