Furuno FR-2125V - Manual (Page 20)

1-9
1.9 Entering Own Ship’s Speed
EPA and any azimuth stabilized presentation modes require speed input and gyrocom-
pass signal. The speed can be entered from a speed log (automatic) or through the plot-
ting keypad (manual).
1.9.1 Automatic speed input
1. Press the [RADAR MENU] key and the [0] key to show the FUNCTIONS 2 menu.
[FUNCTIONS (2)]
1 [FUNCTIONS (1)]
2 BKGD COLOR
BLK(GRN CHAR)/
BLK(RED CHAR)/
BLU (ECHO AREA)
BLU/
BRT BLU
3 ECHO STRETCH OFF/1/2/3
4 ECHO AVERAGE OFF/1/2/3
5 ECHO COLOR YEL/GRN/COLOR
6 SHIP SPEED LOG/NAV/MAN
MAN = 00.0KT
(STW/SOG)
7 SET, DRIFT OFF/MAN
SET = 000.0
°
DRIFT = 00.0KT
8 INDEX LINES NO. 2 VRM/MAN
MAN = 00.00SM
9 [BRILLIANCE (1)]
0 [FUNCTIONS (3)]
SOG (Speed-over-the-ground) is the Speed Made Good
over the ground determined by EPFS, Echo Reference or
Dual-axis speed log. It is obtained by a distance between
points over the ground divided by the time spent for
traveling between these two points.
Figure 1-10 FUNCTIONS 2 menu
2. Press the [6] key to select menu item 6 SHIP SPEED.
3. Press the [6] key to select LOG or NAV.
4. When the serial speed data is selected at the installation menu, select the speed mode,
STW (speed through the water) or SOG (speed over the ground). If pulse speed data
is selected, the STB/SOG does not appear.
5. Press the [ENTER] key to confirm your selection followed by the [RADAR MENU] key
to close the FUNCTIONS menu. The ship’s speed readout at the screen top shows
own ship’s speed fed from the speed log followed by the label “LOG.”
Notes on automatic speed input
1) IMO Resolution A.823(19) for ARPA recommends that a speed log to be interfaced with
an ARPA should be capable of providing through-the-water speed.
2) Be sure not to select LOG when a speed log is not connected. If the log signal is not
provided, the ship’s speed readout at the top right-hand corner will be blank.
3) SPD **.* and SIGNAL MISSING LOG appears if no log signal is present for 30 seconds
while the ship’s speed has been more than 5.0 kt.
4) With the serial speed inputs and SOG selection, if the type of data is changed from
SOG to STW, the label SOG appears in red at the upper right corner on the screen.