54
3.OPERATIONS
Adjusting gain (GAIN)
The setting of the gain control and the receiver gain can be adjusted.
Adjust gain using the following procedure:
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 "CALIBRATION" by pressing the
or
key,
and display the CALIBRATION submenu by pressing the
key.
4
Move control to "GAIN" by pressing the
or
key, and
display the GAIN submenu by pressing the
key.
5
Select either "HI" (high frequency) or "LO" (low frequency) by
pressing the
or
key.
6
Assign a gain correction value by pressing the
or
key.
Example: A correction value of 5 changes the gain level to 5 with
respect to the GAIN control setting of 0.
7
Press the
MARK
key to return to the INITIAL SETTING submenu.
8
Press the
GRAPH
key to return to the fishfinding display.
Correcting a water depth display error (SOUND SPEED)
Depending on underwater conditions, the sound velocity displayed may
slightly deviate from its actual value. If this is the case, the displayed
water depth value will differ from an actual value. Such an error can be
corrected by assigning a sound velocity correction value.
Assign a sound velocity correction value using the following procedure:
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 "CALIBRATION" by pressing the
or
key,
and display the CALIBRATION submenu by pressing the
key.
4
Move control to "SOUND SPEED" by pressing the
or
key.
5
Assign a sound velocity correction value by pressing the
or
key.
Example: +10 m/sec (standard sound velocity is 1,500 m/sec).
6
Press the
MARK
key to return to the INITIAL SETTING submenu.
7
Press the
GRAPH
key to return to the fishfinding display.
CALIBRATION
SOUND SPEED
▲
▲
CALIBRATION
HI
HI
0
0
0
0
LO
LO
MARK RETURN TO INITIAL MENU
GOTO SUB MENU
GRAPH CLOSE MENU
0.0m
0.0m
0.0。
C
0.0%
0.0m/s
▼
▲▲
▲
▲
D R A F T
BELOW KEEL
WATER TEMP
SHIP SPEED
SOUND SPEED
G A I N
SHORT STC
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
CALIBRATION
▲
▲
▲
▲
▲
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
CALIBRATION
GAIN
▲
▲
CALIBRATION
HI
HI
0
0
0
0
LO
LO
MARK RETURN TO INITIAL MENU
GOTO SUB MENU
GRAPH CLOSE MENU
0.0m
0.0m
0.0。
C
0.0%
0.0m/s
▼
▲▲
▲
▲
D R A F T
BELOW KEEL
WATER TEMP
SHIP SPEED
SOUND SPEED
G A I N
SHORT STC
GAIN
High frequency
▲▲
GAIN CALIBRATION
▲
▲
HI
LO
00
-30
0
30
00
MARK RETURN TO INITIAL MENU
GRAPH CLOSE MENU
Содержание JFV-700HP
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