Operation of the EQ
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5.2 Bottom expansion
The advanced bottom lock and expansion feature ensures a reliable
depth readout and provides a compressed standard display in the upper
1/2 of the display. The bottom area can be magnified for better
separation of echoes. The actual size of the expansion window can be
adjusted in the Setup display for 38kHz/50kHz/200kHz.
As an example, from active echo display, 50kHz:
MENU
Press
[MENU],
to call up the menu bar, and…
3,3
press
[3]
and
[3]
to activate bottom expansion of the 50kHz sounder
or…
B-LCK
gain direct access to the bottom expansion feature by pressing
[B-LCK]
+/-
The depth range at the right of the screen can be adjusted by means of
the + and – keys
ENT
Open Setup display (see section 5.8), if any changes are required
ENT
and confirm changes with
[ENT]
B-LCK
Turn bottom expansion off again
FREQUENCY: 50kHz
PULSE: A- SHORT
POWER: A- 1000W
T *.*°C S 0.0kn DK 5.0 m
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