Koden MDP-621 - Adjusting Image Sensitivity

Chapter 8  MDP-1241/1240/1260/1210
Sounder operation  Operation manual
8.3.2 Adjusting the image sensitivity
Display the soft menu (SOUNDER/PAGE1) and press the “GAIN” key.
GAIN STC
SOUNDER/PAGE1
AUTO
RANGE
NEXT
SHIFT
OFF
S FUNC SOUNDER
L GAIN
XX
H GAIN
X
X
RETURN
SOUNDER
L ENH
Y
Y
GAIN
MANUAL
SOUNDER/PAGE1/GAIN
PAGE1
L ADJ
XX
H ADJ
X
X
RETURN
SOUNDER
GAIN
AUTO
PAGE1
H ENH
Y
Y
Changes the manual or automatic sensitivity adjust menu group.
Displays the manual or automatic sensitivity adjust menu.

8.3.2.1 Manual adjustment
The manual adjustment function consists of an adjustment for sensitivity and an adjustment for
enhance.
Adjusting the sensitivity: Optimum sensitivity occurs when the sensitivity is adjusted to a level where
the displayed sea bottom turns red.
Adjusting the enhance: Adjusts the displayed fish detection image. The value set up in Image/Enhance
of the FISH DETECTION MENU becomes the default setting.

(1) Adjusting the low frequency sensitivity
If the “L GAIN” key is pressed, the GAIN adjustment box shown below is displayed.
The GAIN is adjusted by moving the rotary control. The GAIN value is indicated with a number and
a bar. Moving the rotary control to the right will increase the GAIN. Moving the rotary control to
the left will decrease the GAIN.
50 L GAIN




(2) Adjusting the low frequency enhance
If the “L ENH” key is pressed, the ENHANCE adjustment box shown below is displayed.
The method of operation is the same as the L GAINmethod.

L ENH 50
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