Chapter 7-10 CE33 Echosounder operation
transfer of data to connected navigator, plotter, etc.
Alarm for fish - set the strength from min. 00 (weak echo) to max.
99dB (strong echo), and you can set it ON or OFF.
Depth DS fish - define a specific area below the water surface of
minimum and maximum depth for the fish alarm.
Depth DK alarm min. and max. - set up a depth limit alarm for
depth below keel.
Water profile - choose between SALT and FRESH water. The set-
ting will reflect on the:
Velocity of sound in water: SALT = 1470 meters per second and
FRESH = 1430 meters per second as standard. The standard set-
tings can be even more accurate by slightly increasing the number of
meters in warm waters and decreasing in cold waters.
Time/distance scale - will indicate the elapsed time or distance for
the echo picture. The readout will appear in the upper part of the
echo display. Toggle between time and distance in “Scroll synchro-
nisation”, section 7.9.
Echo sampling - is preset to BOTTOM, which enables auto range
and a view all the way to the bottom. In RANGE the unit will not
wait for a bottom echo, but transmit a new pulse as soon as the
selected range has been reached. This mode will often improve
bottom detection and digital depth readout for vessels moving at
higher speeds. Also, it will enable a more detailed search for fish in
midwater range. Auto range is automatically switched off. The depth
alarm setting will have a higher priority than the selected depth
range.
Demo mode - the echosounder will function as though a transducer
was connected, but all data presented in the display will be simu-
lated.
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