Furuno FR-2105 Operator's Manual page 79

SOG indication none
COLLISION Continuous
beep
TRUE VECTOR none
indication
UPDATE PLOT none
COLLISION Continuous
beep
Guard Zone Continouas
alarm beep
GZ OUT none
alarm
The label SOG (Speed Made
Good) turns red at the top data
cell when SOG option is selected
on the menu and the assoclated
SDME (Speed and Distance
Measuring Equipment = Speed
log) fails to detect a bottom
tracking speed, resulting in the
"Speed through the water" (STW)
mode automatically.
The label TRUE VECTOR turns
red in the second data cell when
the TRUE Vector is selected in
the RM mode, and returns to the
normal text color in the North-up
TM mode.
If you have failed to enter a next
EPA plot with in 10 min, this
indication flashes. Plot symbol of
the target also flashes.
COLLISION comes on when
EPA- or ATA-tracked target is on
collision course.
The label CZ appears in red if a
target enters to the guard zone.
Target is masked by a flashing
inverted triangle.
If the range scale has been
reduced to make one of GZs
positions more than 1.5 times of
the range scale, the label GZ
OUT appears in red.
-1.62-
The radar does not automatically
reset itself to receive an SOG
data even if the SDME regains a
bottom tracking speed. To erase
SOG indication (red), press keys
[RADAR menu], [0], [6].
Re-acquire the flashing target
within 5 min. Leave it if it is not
important.
Take evasive action or terminate
tracking of target.
Then, visual indication goes off.
Press the AUDIO OFF key to
acknowledge it.
CXhange the range scale of GZ.