4. Operation 30
Note : On Primary and Secondary transducer settings, when select the transducer position as primary
200kHz position to AFT and secondary 50kHz or 50kHz-A position to FWD, standard dual display
mode and docking mode display is changed to right side FWD data .
For example, primary: 200kHz, AFT and
secondary 50kHz or 50kHz-A FWD,
standard dual and docking mode displays right
side is secondary data.
「STC」(STC curve)
・Make STC a yellow display, press or the [ENT] key, and select it from the following, set content.
Set content ：SHORT/MIDDLE/LONG
SHORT ：40log is selected by the STC curve on a primary (secondary) side.
MIDDLE ：30log is selected by the STC curve on a primary (secondary) side.
LONG ：
20log is selected by the STC curve on a primary (secondary) side.
・Select the curve by and press the [ENT] key.
※ The STC curve is set to “LONG" regardless of the setting by here when setting it to an auto gain.
「INNER」(Inner hull offset)
・Make INNER a yellow display, press or the [ENT] key, and select it from the following, set content.
Set content ：OFF/1/2/3/4/5
OFF ：
The offset of inner Hull is not put on a primary (secondary) side.
1 ：The offset of +4dB is set to the gain on a primary (secondary) side.
2 ：The offset of +8dB is set to the gain on a primary (secondary) side.
3 ：The offset of +12dB is set to the gain on a primary (secondary) side.
4 ：The offset of +16dB is set to the gain on a primary (secondary) side.
5 ：The offset of +20dB is set to the gain on a primary (secondary) side.
・Select the content by and press the [ENT] key.
「KEEL」(Keel correction)
・Make KEEL a yellow display, press or the [ENT] key, and the numerical value (initial value 0.0) is
displayed.
・The numerical value becomes large when key is pressed, and when key is pressed, the
numerical value becomes small.
・The keel correction can be set in 0.1m unit within the range of 0.0～9.9m.
・When the setting of the correction value finishes, press the [ENT] key.
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