Gyro Compass - Raytheon NSC 18 User Manual

SWITCH ON THE RADAR,
SELECT THE BEST PRESETTINGS
1.
Switch ON the NSC.
Press the button 5s, the main power has to be switched on.
The Run−Up phase is terminated after 190s.
The NSC status is STANDBY.
Select this softkey per cursor. The softbutton name changes
to TX. The radar is ready for operation.
The attitudes selected last are effective:
These are:
PPI presentations and adjustments, Antenna sensitivities,
last Sensor choice.
2.
Check
D the ALARM−Messages (detailed information
see chapter 2.3.6.4).
D the position indication between radar information
panel and position sensor.
D the radar video with the real area, make a bearing
to a known target (bouy, beacon, church).
D the magnetron quality. Check it with the performance
monitor (see chapter 2.5.5).
3.
Select the PPI−presentation in favor.
means Relative Motion, own ship is stationary and other
objects, including land masses boys, ships at anchor and
ships in motion, move with correct relative speed and course
means True Motion, land masses, bouys, ships at anchor,
etc. appear exactly as they are. Objects in motion, including
own ship, move with correct true speed and course across
the operating screen.
means North−Up, geographic north is upward
−Stabilized operation−. GYRO Compass information is
required for North−Up operation.
means Head−Up, heading is upwards
−Unstabilized operation*−.
means Course−Up, course is upwards
−Stabilized operation−. GYRO Compass information is
required for Course−Up operation.
means Reapter−Up, repeater indication is upwards
−Unstabilized operation−.
SITUATION SETTINGS
PPI adjustments
Select your required Range Scale (highest value
96.0 NM, lowest value 0.125 NM).
Fade the Range Rings, Rings are used to make quick
assessment of target's approximate range from own ship.
The ship symbole appears in the range scale between
0.125 NM to 96.0 NM or in the ring scale
0.02 NM to 16 NM.
Antenna Sensitivity controls
AUTO mode for TUNE.
The TUNE control is used to tune the Receiver
Frequency to match that of the Transmitter.
The tune adjustment should be made on the
medium or long range scales that show radar returns.
The GAIN control adjusts the sensitivity of the radar
display.
AUTO mode for SEA, RAIN, FTC (SFAR).
The SEA control is used to suppress radar returns which
are the result of radar signals reflected from waves.
The RAIN control is used to suppress radar returns
which are the result of radar signals reflected from rain
drops.
FTC performs differentiating, or filtering of rain clouds.
Search and rescue transponder SART ON is to improve
detection of SART.
Select the puls length, from short to long pulse and vice
versa to optimize the target discrimination with respect
to selected range.
Select the interference function (ON or OFF).
Select the echo expansion (ON or OFF).
Day or Night mode
Press this button if you want to change in the night
mode.
*) Unstabilized operation means.
No heading− or speed−sensor was available.
In this case following NSC functions are not possible:
ARPA function, True Motion, Fast Target ON/OFF
Afterglow Trail
NSC
SHORT OPERATION
SHM Radar Video
Radar Video
see chapter 2.3.2.1 settings
displays
see chapter 2.3.2 see chapter 2.3.3
Antenna
sensitivity
North
controls
Marker
see chapter 2.3.1
T
Cursor
information
T
in the radar video
range,
see chapter 2.3.5
Navigation
Electronic bearing lines (EBL) and variable
range markers (VRM)
see chapter 2.3.4
Radar operator panel
see chapter 2.2.3
CURSOR SYMBOLS
NORMAL CURSOR outside the PPI
DEFAULT CURSOR
OFFSET CURSOR
ECDIS CURSOR (option see chapter 2.2.2.2)
Edition: 03.JAN.2005
R
Raytheon Marine GmbH
Germany
Information MenuBar
panel see chapter
see chapter 2.3.6 2.3.6.6
T
T
T
Park position
automatic cursor position
used as SET button
Trackball
Trackball
see
chapter 2.2.2
used to pick−up for
picking−up and
dragging something
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