Smiths Kelvin Hughes Nucleus 3 5000 Series, System Handbook

Page: 263 / 510

35 The system contains a Gyro Failure Warning which
can be enabled (when at sea)/disabled (when land
based) as follows:
(1) When the Gyro Failure Warning facility is 'OFF',
gyro failure does not cause an alarm , To switch
the facility OFF; position the cursor in the gyro
alarm setting box and click to select ALARM
OFF.
(2) When the Gyro Failure Warning facility is 'ON',
gyro failure causes an alarm and after 60
seconds later the display is forced into Head Up,
Relative Motion mode. To switch ON the facility;
position the cursor in the gyro alarm setting box
and click to select ALARM ON.
NOTE:
At run, when the Gyro failure warning is enabled and the
system does not detect a gyro input, after 60 seconds the
display defaults to Head Up, Relative Motion and displays
a ‘GYRO FAILURE’ warning in the Red Warning box.
Once the correct Gyro operation is restored a Red Warning
box displays ‘RESET GYRO’, across the Gyro box. This is
removed once the Gyro is reset.
36 The system contains a Log Filter , which provides
hardware filtering of spurious log pulses. The Log Filter
can either be set to OFF or to Stage 1 or Stage 2 filtering.
37 The system contains an Azimuth Filter , which
provides hardware filtering of Azimuth pulses.
Switching the filter 'ON' provides filtering for 90 and 180
azimuth pulses. Switching the facility to 'OFF' for a 4096
azimuth pulse input (i.e. Simulator).
38
On completion of the Installation Set-up select EXIT,
this returns the screen to the MENU functions.
NOTE:
The Installation Menu can not be exited until SW1 is set to
OFF.
TEST CARDS 1 & 2
39
Used to check screen linearity and colour alignment.
Primarily used for a ‘Service Aid’.
CHECK ING THE DIS PLAY OP ER A TION
40
To check the operation of the display, select GO TO
TEST and ensure that a Radar picture is displayed
within the Radar Bearing Scale area.
41
Implement a full operational check using the controls
as described in Chapter 1. If any faults are detected,
refer to Chapter 6 for Fault Diagnosis.
GO TO TEST
42 Select GO TO TEST and a menu appears down the
right-hand side of the display screen and is used to set
various levels as shown below:
NOTE:
SW1 must be set to ON, before making any changes
(1) To adjust a level, highlight the required box.
Press and hold down the left-hand pushbutton
and move trackerball until level is reached.
(2) To return to the previously set level press the
right-hand pushbutton.
(3) To save the new settings, set switch SW1 to the
OFF position and return to the Standby Screen.
NOTE:
The Mute Sector Skew facility applies only to the
Transmitter displayed in the GO TO TEST menu (i.e. the
transmitter currently selected in Standby mode). Where the
system comprises multi-transmitters and Mute Sector is
active, the Mute Sector Skew is to be applied to each
selected Transmitter individually.
July 03 5.6 Amdt. 5
KH 2020
Chap 5
CD-4801
NOT USED
(When used - set to follow
fastest rate of turn of GYRO)
Sets the volume and Low
and High Tones
Warning Level Trips
Set for maximum noise without
flooding the picture
(LP and GAIN to 8, COR 0).
Set for straightness of line,
i.e. Nearby quay or bank.
Set to optimise sea clutter control.
Sets the exact position of the
Mute Sector, allows adjustment
by 10 deg. in each direction.
Set for tune bar length to be
60-70% of maximum when on tune.
Set to correct alignment of Radar
and Graphics