Furuno FR-1710 - Manual (Page 23)

1-9
1.12 Entering Own Ship’s
Speed
EPA requires an own ship speed input and
compass signal. The speed can be entered
from a speed log or navaid (automatic) or
through the plotting keypad (manual).
Automatic speed input
1. Press the [MENU] key and the [0] key
twice to show the OTHER menu.
OTHER
1. HDG SET
2. SPD MODE MAN LOG NAV
LOG (S-BT)
LOG (S-WT)
3. MAN SPD
4. DRIFT SET
5. DISPLAY
6. MARK/LINE
7. TUNE
8. NAV DATA
9. EBL/VRM
0.
↓
Figure 1-9 OTHER menu
2. Press the [2] key to select the menu item
SPD MODE.
3. Press the [2] key again to select the LOG
or NAV.
LOG: Pulse input from speed
log, serial data
NAV: Speed data from naviga-
tion equipment
4. Press the [ENTER/SELECT] key to con-
firm your selection followed by the
[MENU] key to close the menu.
Note: Be sure not to select a LOG option or
NAV when respective equipment is not con-
nected. If the log signal or navaid signal is
not provided, the ship’s speed readout at the
screen top will be blank.
Manual speed input
If the radar is not interfaced with a speed log,
or the speed log does not feed correct speed
enter the ship’s speed as follows:
1. Press the [MENU] key and the [0] key
twice to show the OTHER menu.
2. Press the [2] key to select MAN from the
SPD MODE field, and then press the [EN-
TER/SELECT] key.
3. Press the [3] key twice to select the MAN
SPD field.
4. Enter speed with the numeric keys.
5. Press the [ENTER/SELECT] key to con-
firm your selection followed by the
[MENU] key to close the menu.
LOG 10.0KT WT
Or NAV
LOG or NAV speed indication
LOG 8.7KT WT
GT
8.5 F ← Fore/Aft
0.5 SB ← Port/STBD
LOG (serial data) speed indication
About Ship’s Speed
a: Fore/aft speed
b: Port/starboard speed
c: Speed made good (actual speed)
Pulse signal: a only (water tracking speed)
Serial speed: a and b
Water tracking speed = relative speed
(including error due to wind, current
Ground tracking speed = true speed
(no influence from wind, currents)
Navigator speed: c
→
c’
Speed input (c) from navgator (GPS, etc.)
c is converted to fore/aft direction (c’) and
displayed on the radar screen.
a
b
c
⇒
c’
Wind,
current