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3. ADJUSTMENT
3-10
3.7 Sea Trial
Cruising noise check
Check and record the cruising noise level displayed on the screen. Do this with the
transceiver turned off and the ship anchored, and also with the ship running at the speed
normally used while the sonar is in use.
NL
RANGE
GAIN
TVG
TILT
DEPTH
800 m
5.0
N 5 F 5
0˚
ENG RPM
SPEED
SEA CONDITION
0 KTS
Ship anchored
NL
RANGE
GAIN
TVG
TILT
DEPTH
800 m
5.0
N 5 F 5
0˚
ENG RPM
SPEED
SEA CONDITION
Ship at cruising speed
Recording optimum control settings
Record the suitable settings of controls and switches, and take a photograph of the sonar
picture as reference for later service.
RANGE
TILT
TVG
GAIN
OUTPUT
TX PULSELENGTH
NOISE LIMITER
AGC
VP
INTERFERENCE REJ
N F
PHOTOGRAPH