2-15
OPERATION KNOBS
BRIGHTNESS KNOB
Turn this knob
clockwise to increase the screen brightness and “10”
is the brightest.
GAIN KNOB
Adjusts the sensitivity of the received signal and turn this
knob Clockwise to increase the gain.
•
Gain controls can be adjusted by “GAIN UP” function in
FUNCTION SETTINGS.
page 3-6
FAR GAIN KNOB
TVG CURVE in FUNCTION SETTINGS
10LOG to 40LOG
As the echoes returning from the bottom and from fish targets
get weaker as the depth increases, it is advantageous to have a
Time-varied-gain function that automatically compensates for
propagation loss of sound.
page 3-7
STC function in TVG CURVE in FUNCTION SETTINGS
This STC function enables you to reduce noise interference
resulting from bubbles, dirt, etc. near the surface of the water.
As the knob is turned toward
“0”, then the STC effect will
become progressively from the surface to the distance stronger.
•
Selecting STC function releases the gain adjustment
automatically so that the sensitivity of the receiver becomes
weaker in the distance.
•
Gain controls can be adjusted by the Gain knob
s and “GAIN UP”
function in FUNCTION SETTINGS.
page 3-6
4
5
6
3
2
1
7
8
9
0
10
4
5
6
3
2
1
7
8
9
0
10
4
5
6
3
2
1
7
8
9
0
10
4
5
6
3
7
2
8
1
9
0
10
CF
CF
CF
Summary of Contents for ESR-145
Page 1: ......
Page 2: ......
Page 3: ......
Page 4: ......
Page 6: ... This page intentionally left blank ...
Page 14: ...8 This page intentionally left blank ...
Page 59: ... This page intentionally left blank ...
Page 62: ...4 3 INSTALLATION DIMENSIONS HULL UNIT DISPLAY UNIT Unit mm inch ...
Page 75: ... This page intentionally left blank ...
Page 85: ......
Page 86: ......