4.24 Log File
This log file is detailed in section 3.31
4.25 Saving Changes
If any changes have been made to the settings, UAIS will ask for confirmation of
those changes.
To complete the process the correct password will need to be entered.
PRESS to exit and return to Main menu.
This action returns UAIS to normal transmission.
89-042 Issue 5 45
5 M aintenance an d Servicin g
5.1 Preventative Maintenance
The UAIS transponder system is an essential part of the ship’s navigation system
and is a vital component for the safety of the ship and its crew. It is therefore very
important to maintain the system and its installation to a very high standard. The
design of the UAIS transponder ensures that maintenance can be kept to a
minimum, however it is good practice to perform a performance check at least once
every week.
5.2 VDU Touch-Screen
To optimise performance of the touch-screen VDU and cabinet, ensure they are
kept clean and grease-free. Use a clean damp cloth, or for heavier deposits use a
clean, damp cloth and a mild solution of dish washing detergent and water. Do not
use any spirit or alcohol based solvents, gasoline or oils.
5.3 Electrical Connections
Periodically check the electrical connections; ensure that no cables are frayed or
worn, and that all connections are tight and sound.
5.4 Repair and Service
With the exception of the fuses located on the Screw Terminal Board, there are no
user serviceable parts. Changing fuses is described in Section 6 – Troubleshooting.
Removal of the inspection plates other than by an Authorised Service Technician
will void warranty. If having followed the Troubleshooting Guide (Section 6) UAIS is
still inoperable, please call your local Service Centre.
5.5 Spare Parts
Use only manufacturers genuine spare parts. No liability can be accepted for
equipment failure due to incorrect replacement parts being used.
5.6 World-wide Sales and Service
For a complete list of worldwide sales and service agents, please contact your
product supplier.
89-042 Issue 5 47
6 Troubleshooting
Perform the following checks BEFORE calling an authorised Service Centre.
Symptom Cause Cure
No Green light illuminated on
Transponder
No text on screen
Text appears on screen
but is too dark or light to
read
At power-up, self-test
shows one of the
following messages: -
ROM : Error
RAM : Error
FLASH : Error
Tx malfunction alarm
activates
1) No power to
Transponder
2) System fuse
blown
1) VDU installation
2) Display fuse
blown
LCD backlight and/or
contrast out of
adjustment
Central processor
failure
Transmitter PCB
failure
1) Check fuse or circuit
breaker at 24VDC
supply point.
2) Check/replace system
fuse in Transponder.
Use only 10Amp blade type
fuse
Green light is illuminated on
Transponder
1) Check display
cable/connections
2) Check display fuse in
Transponder.
Use only 1Amp blade type
fuse
1) Select Display
Brightness from Main
menu
2) Adjust LCD backlight
and/or contrast (See
section 3.36 Display
Brightness Menu on
page 29)
Contact Service Centre
Contact Service Centre
89-042 Issue 5 49
Symptom Cause Cure
Antenna VSWR exceeds
limit alarm activates
Rx channel A
malfunction alarm
activates
Rx channel B
malfunction alarm
activates
Rx channel DSC
malfunction alarm
activates
General failure alarm
activates
MKD connection lost
alarm activates
External EPFS lost alarm
activates
No sensor position in use
alarm activates
No valid SOG information
alarm activates
Antenna installation 1) Check
cable/connections
2) Check antenna
Receiver PCB failure Contact Service Centre
Receiver PCB failure Contact Service Centre
Receiver PCB failure Contact Service Centre
No Green light illuminated on
Transponder
1) Check fuse or circuit
1) No power to
Transponder
2) System fuse
blown
breaker at 24VDC
supply point.
2) Check/replace system
fuse in Transponder.
Use only 10A blade type
fuse
VDU installation Check display
cable/connections
GPS signal lost 1) Check GPS
2) Check
cable/connections
GPS installation 1) Check
cable/connections
2) Check GPS
3) Enable internal GPS to
provide position (See
section 4.15 Intern.
GNSS Position on page
38)
1) Bottom Track
Log signal lost
2) GPS signal lost
1) Check GPS
2) Check
cable/connections
50 89-042 Issue 5
Symptom Cause Cure
No valid COG
information alarm
activates
Heading lost/invalid
alarm activates
GPS signal lost 1) Check GPS
2) Check
cable/connections
1) Gyro compass
2) Gyro interface
3) Connection between
Transponder and
1) Check Gyro or
Interface Unit
2) Check
cable/connections
Gyro / interface
No valid ROT information
alarm activates
1) Gyro compass
2) Gyro interface
3) Connection between
Transponder and
3) Check Gyro or
Interface Unit
4) Check
cable/connections
Gyro / interface
No TDMA
synchronisation alarm
activates
Tx amplifier malfunction
Integral GPS signal lost 1) Check
cable/connections
2) Check antenna
Transmitter PCB failure Contact Service Centre
alarm activates
No own reports mode
alarm activates
Purpose of station set to
No own reports mode
Re-assign purpose of
station (see section 4.5
Purpose on page 35)
Changing a fuse
There are two fuses, located on the Screw Terminal Board, which are designed to
be changed by the user. These are the only user servicable parts.
Fuse description Fuse value Part No.
Main system fuse 10.0 Amp 99-077
VDU system fuse 1.0 Amp 99-076
Switch off the Transponder, undo the six screws retaining the cover, then lift off the
cover. Ensure that the power is off before attempting to remove a fuse. The fuse
link is visible through the transparent body of the fuse.
Ensure that the fuses are not interchanged. The values are clearly marked on the
board.
When the fuses have been checked to be intact, replace the cover, fit the six
screws and tighten carefully.
89-042 Issue 5 51
7 Specification
General Data
Power consumption: 75W
Power supply: 24 VDC –10% +30%
Default frequencies:
Operating temperature:
Storage temperature:
Environmental: As per IEC 60945
Transponder size / weight 308mm x 416mm x 93mm 7kg
VDU size / weight 219mm x 151mm x 76mm 1kg
GPS size / weight
GPS receiver: Used for TDMA timing. Optionally used for
GPS antenna: Patch antenna with built-in 30dB preGLONASS receiver Optional GLONASS version available
Transmitter
Power output: 12.5 W or 2.0 W
Frequency range: 156.025 – 162.025 MHz
Antenna impedance:
TDMA Receivers
Sensitivity: (PER) < 10% at –107 dBm (25kHz)
Frequency range: 156.025 – 162.025 MHz
Channel spacing: 12.5 or 25 kHz
Modulation: GMSK
Data rate: 9,600 bits/s
Frequency stability:
DSC Receiver
Sensitivity: BER <10-4 at 107 dBm
Frequency range: 155.3 – 162.5 MHz
Channel spacing 25kHz
Modulation 1300Hz/2100Hz - FSK
Frequency stability
Serial inputs/outputs
SENS1/2/3 IEC61162-2 (RS-422 input only)
DISPLAY, LONG RANGE,
MA IN , AUX/ PILO T, RTCM
AIS1 (CH87B) 161.975 MHz
AIS2 (CH88B) 162.025 MHz
DSC (CH70) 156.525 MHz
-15°C to +55°C
-20°C to +70°C
∅ 115mm x 76mm 0.24kg
navigational information.
amplifier
50 Ω
< ± 1ppm
< ± 1ppm
IEC61162-2 (RS-422 input & output)
89-042 Issue 5 53
8 Glossary
4S Ship - to-Ship & Ship-to-
Shore
AIS Auto mati c Identifi c a tion
System
ALM Alarm
ANT Antenna
ARPA Autom atic Radar Plotting
Aid
ASCII American St andar d Code
for Info rm ati o n
Interchange
ATA Automatic Tracking Aid
AtoN Aid to Navigation
AUTO Automatic
AUX Auxiliary
BAS Basic AI S Se rvices
BAT Battery
BIIT Built-In In te g rity Tes t
BIOS Basic Input / Output
System
BRG Bearing
BRILL Display Brilliance
CG Coast Guard
CH Channel
CHG Change
CLR Clear
CNCL Cancel
CNS Communication,
Nav igat ion & Surveillan c e
COG Cou r se Ov er Ground
CONTR Contrast
CPA Closest Point of Approach
CPU Cent ral Pro c e s s ing Unit
CSE Course
DEL Delete
DEST Destination
DG Dangerous Goods
DGLONAS S Differen tial G LONASS
DGNSS Diff e r e nt ia l GNSS
DGPS Differen tial G PS
DISP Display
DIST Distance
DSC Digital S electiv e Callin g
DTE Dat a Terminal Equipment
ECDIS Electron ic Chart Dis play
and Information System
ECS Electronic Chart System
EGNO S Eur opean G eo- stat ionary
ENC Electronic Navigation
ENT Enter
EPA Electronic Pl o tt ing Aid
EPFD Electronic Position Fixing
EPFS Electronic Position Fixing
EPI RB Elect r on ic Pos ition
ERR Error
ETA Estimat ed Time of Arrival
EXT External
FATDMA Fixed Access Time
FCC Federal Communication s
FREQ Frequency
GLO or
GLONASS
GMDSS Global Mar it ime Distr ess
GND Ground
GNSS Global Nav igation Satell ite
GPS Gl obal Position in g System
GYRO Gyro Compass
HDG Heading
HS Hazardous Substances
HSC High Speed Craft
I/O Input / Output
I BS Int egr ated Bridge Sys t em
ID Identification
IEC International
IMO International Maritime
IN Input
INFO Information
INS Integrat ed Navigation
ITDMA Incremental Time Division
ITU-R International
Nav igat ional Overlay
System
Chart
Device
System
In dicat ing Radio Beacon
Div is io n Mu ltiple Ac c e s s
Commission
Global O r biting Navigation
Satellite System
and Safety Syst em
System
Electotechnical
Commission
Organisation
System
Multiple Access
Telecommunications
Union –
Radiocommunications
Bureaux
89-042 Issue 5 55
KN Knots
L/L Latitude / Longitude
LAT Latitude
LON Longitude
LOST TGT Lost Target
MMetres
MAG Magnetic
MAN Manual
MED Marin e Equipment
Directive
MF/H F M ediu m Fr equency/H igh
Frequency
MID Maritime Identifi c a tio n
Digit
MIN Minimum
MKD Minimum Keyboar d and
Display
MMSI Maritime M obil e Serv ice
Identity
MOB Man Overboard
MP Marine Pollutant
NAV Navigation
NM Nautical Mile
NMEA National Marine
Electronics Association
NUC No t Unde r Co m mand
OOW Officer Of the Watch
OS Own Ship
OUT Output
POSN Position
PPU Port a ble Pilo t Unit
PWR Power
RAIM Receiver Autonomous
Integ rit y Moni tori ng
RCC Re s c ue Co-ordin a tion
Centre
RNG Range
RORO Rol l O n , Ro ll Of f
ROT Rate Of Turn
RR Range Rings
RT CM Radio T echnical
Commission for Maritime
services
RTE Route
Rx Receive / Receiver
SAR Search And Rescue
SEL Select
SOG Speed Over Groun d
SOTDMA Self-Organising Time
Div is io n Mu ltiple Ac c e s s
SPD Speed
SPEC Specification
STBD Starboard
STBY Standby
STW Speed Through Wat er
TCPA Time to Closest Point of
Appoach
TDMA Time Division Mult ip le
Access
TGT Target
TPR Transponder
TRK Track
TSS Traffic Separation Sch eme
TTG Time To Go
Tx Transmit / Transmitt e r
Tx/Rx Transceiver
UAIS Universal Automatic
Identification System
UHF Ultra High Frequency
UTC Uni versal Time Co -
ordinate
VDL VHF Data Link
VDU Visua l Displ a y Unit
VHF Very High Frequency
VOY Voyage
VSWR Virtual St an ding Wav e
Ratio
VTS Vessel Traffic Systems
WAAS Wide Area Augment ation
System
WCV Waypoint Cl osur e Velocity
WGS World Geodetic System
W IG W ing In Gro u nd
WPT Waypoint
89-042 Issue 556
9 Declaration o f Con f ormity
89-042 Issue 5 57
58
89-042 Issue 4
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