Furuno FR-2125V Operator's Manual page 25

2. To enable selection of S2 (0.15 ms) and M1 (0.3 ms) pulsewidth on the 3 SM range,
select S2 at 3 SM in the PULSE WD 1 menu and M1 at 3 SM in the PULSE WD 2
menu.
A longer pulse provides an increased detection range, but with reduced discrimination. If
you need discrimination in preference to detection, choose a shorter pulse.
Example: To select S1 (0.07 ms) as Pulsewidth 1 for the 0.5 SM range, display the PULSE
WIDTH 1 menu following the steps shown above and hit the [2] key to choose "0.5 SM."
Further hit the [2] key until the menu option "S1" is highlighted to the right of "0.5 SM."
[RADAR MENU] key
[FUNCTIONS (1)]
1 TARGET TRAILS
2 TARGET ALARM
3 ORIGIN MARK
4 INDEX LINES
5 ZOOM
6 PULSE WIDTH
7 INT REJECT
8 ARPA
9 VIDEO PLOT
0 [FUNCTIONS (2)]
[0] key
[FUNCTIONS (2)]
1 [FUNCTIONS (1)]
2 BKGD COLOR
3 ECHO STRETCH OFF/1/2/3
4 ECHO AVERAGE OFF/1/2/3
5 ECHO COLOR
6 SHIP SPEED
7 SET, DRIFT
8 INDEX LINES
9 [BRILLIANCE (1)]
0 [FUNCTIONS (3)]
[0] key
[FUNCTIONS (3)]
1 [FUNCTIONS (2)]
2 [RADAR (1)]
3 [FUNCTION KEY 1]
4 [FUNCTION KEY 2]
5 [FUNCTION KEY 3]
6 [FUNCTION KEY 4]
7 [RADAR
8 INTER SWITCH
9 GYRO SETTING
EBL= xxx.x
0 [FUNCTIONS (4)]
In the RADAR 1 menu, select 8 for pulsewidth 1, or 9 for pulsewidth 2.
0.5 SM range S1/S2
1.5 SM range S1/S2/M1
6 SM range M1/M2/M3/L 12-24 SM range M2/M3/L
1-14
(1 or 2)
(1 to 10)
[1] key
BLK(GRN CHAR)/
BLK(RED CHAR)/
BLU (ECHO AREA)
BLU/
BRT BLU
YEL/GRN/COLOR
LOG//NAV/MAN
MAN = 00.0KT
(STW/SOG)
OFF/MAN
SET = 000.0
DRIFT = 00.0KT
NO. 2 VRM/MAN
MAN = 00.00SM
[1] key
[2] key
1/2
Figure 1-12 Sequence for selecting pulsewidth
0.75 SM range
3 SM range
[RADAR (1)]
1 [FUNCTIONS (3)]
2 EBL 1 REL/TRUE
3 EBL 2 REL/TRUE
4 VRM 1* NM/km
5 VRM 2* NM/km
6 TRAIL REL/TRUE
7 TRAIL GRAD SGL/MULT
8 [PULSE WD 1]
9 [PULSE WD 2]
0 [RADAR (2)]
S1/S2/M1
S2/M1/M2/M3
* Does not appear on
SM-type radar.