3.OPERATIONS
57
Operating your fishfinder with an external trigger (EXT. TRIG. IN)
Connection of an external trigger input signal line requires separate
modification of the rear panel. Such modification is optional (extra
charges required). If you desire this modification, please contact
your JRC dealer.
Set "EXT. TRIG. IN" to "ON" to operate your fishfinder by sending an
external trigger signal in order to include external fishfinding video in the
dual-display or suppress interference.
To make a dual display by receiving external fishfinding signals,
also set "EXT. SIG. IN" to "ON" seeing page 58.
Use the following procedure to operate your fishfinder with an external
trigger:
1
Display the FISH FINDER SETTING menu by pressing the
and
keys together.
2
Move control to "INITIAL SETTING" by pressing the
or
key, and display the INITIAL SETTING submenu by pressing the
key.
3
Move control to "EXT. TRIG. IN" by pressing the
or
key.
4
Move control to "ON" by pressing the
or
key.
5
Press the
MARK
key to return to the FISH FINDER SETTING menu.
6
Press the
GRAPH
key to return to the fishfinding display.
Modifying the characteristics of the GAIN control (VR CURVE)
The characteristics of the GAIN control can be modified.
The "LINEAR" characteristic changes so that the gain level uniformly
increases for GAIN control settings from "0" to "10". A gain level from
"4" to "7" is standard.
The "C CURVE" characteristic changes to nearly 70% of the maximum
gain with GAIN control settings from "0" to "3". A gain level from "1" to
"3" is standard (the default is "C CURVE").
Use the following procedure to modify the characteristics of the GAIN
control:
1
Display the FISH FINDER SETTING menu by pressing the
and
keys together.
2
Move control to "INITIAL SETTING" by pressing the
or
key, and display the INITIAL SETTING submenu by pressing the
key.
3
Move control to "VR CURVE" by pressing the
or
key.
4
Select either "C CURVE" or "LINEAR" by pressing the
or
key.
5
Press the
MARK
key to return to the FISH FINDER SETTING menu.
6
Press the
GRAPH
key to return to the fishfinding display.
FISH FINDER SETTING
INITIAL SETTING
FISH FINDER SETTING
HI
OFF
AUTO
▲▲
GOTO SUB MENU
GRAPH CLOSE MENU
▲
▲
▲
▲
▲
▲
▲
▲
INTERFERENCE
COLOR REJ.
FREQ. ADJUST
TX CYCLE MODE
1
2
3
4
5
6
7
8
SIGNAL PROCESS
INITIAL SET
STC MODE
TX CYCLE ADJ.
ADC MODE
TX PULSE WIDTH
WHITE LINE
P
D
C
1R1
0.0
LO
0.0
HI
D
D
LO
HI
200.0
50.0
LO
LONG
OFF
SYNC.
0
50
100
1
2
150
200
ASYNC.
SHORT
1R2
INITIAL SETTING
VR CURVE
▲
▲
▲
▲
▲
INITIAL SETTING
MARK RETURN TO PREVIOUS MENU
GOTO SUB MENU
GRAPH CLOSE MENU
▼
▲▲
▲
▲
U
N
I
T
CALIBRATION
VR CURVE
BTM. DEC. LEVEL
EXT. TRIG. IN
EXT. SIG. IN
DATA INPUT
DATA OUTPUT
C CURVE
HI
LO
OFF ON
ON
OFF
LINEAR
0
0
FISH FINDER SETTING
INITIAL SETTING
FISH FINDER SETTING
HI
OFF
AUTO
▲▲
GOTO SUB MENU
GRAPH CLOSE MENU
▲
▲
▲
▲
▲
▲
▲
▲
INTERFERENCE
COLOR REJ.
FREQ. ADJUST
TX CYCLE MODE
1
2
3
4
5
6
7
8
SIGNAL PROCESS
INITIAL SET
STC MODE
TX CYCLE ADJ.
ADC MODE
TX PULSE WIDTH
WHITE LINE
P
D
C
1R1
0.0
LO
0.0
HI
D
D
LO
HI
200.0
50.0
LO
LONG
OFF
SYNC.
0
50
100
1
2
150
200
ASYNC.
SHORT
1R2
INITIAL SETTING
EXT. TRIG. IN
▲
▲
▲
▲
▲
INITIAL SETTING
MARK RETURN TO PREVIOUS MENU
GOTO SUB MENU
GRAPH CLOSE MENU
▼
▲▲
▲
▲
U
N
I
T
CALIBRATION
VR CURVE
BTM. DEC. LEVEL
EXT. TRIG. IN
EXT. SIG. IN
DATA INPUT
DATA OUTPUT
C CURVE
HI
LO
OFF ON
ON
OFF
LINEAR
0
0
