Simrad SP270 Installationshandbuch Seite 131

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Start-up procedures
160573/A
Noise/spee.
cur"\l,
e'\iN"
To make a noise/speed curve of the ship, make the following
settings in the menu:
RANGE. . . .
. .
3500
GAIN. . . . . . .
MODE. . . .
. . . :
BOW UP
TRANSMIT. . .
MONO
PULSE FORM. .
CW-
NORM
POWER...
OFF
PINGS ECTOR.
OMNI
TVG. . . . . . . .
OFF
AGC. . . . . . . .
OFF
RCG. . . . . .
. .
OFF
PP-FILTER. .
OFF
COLOURTHRES:
DISPLAY GAIN:
Now
, when entering the TEST in the menu
, the text
ECHO
LEVEL will be followed by the dB
value of the ship s noise.
To make the noise/speed measurements, start with 0 knots
wi th the engine running, and turn the audio line to the
different bearings which are shown in table 7. When a new
bearing is selected, wait at least
10 seconds before making a
readout of the new ECHO LEVEL.
Enter the results into the
table.
Increase the speed in steps of two knots and make the readouts
when the speed is stable for the selected engine thrust.
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