SATELLITE COMPASS
SC-120
SAFETY INSTRUCTIONS
Safety Instructions for the Operator
Safety Instructions for the Installer
WARNING
WARNING
Do not open the cover unless totally
familiar with electrical circuits and
service manual.
Do not open the equipment.
Only qualified personnel should work inside
the equipment.
Improper handling can result in electrical
shock.
Do not disassemble or modify the
equipment.
Turn off the power at the switchboard
before beginning the installation.
Fire, electrical shock or serious injury can
result.
Fire or electrical shock can result if the
power is left on.
Immediately turn off the power at the
switchboard if the equipment is emitting
smoke or fire.
Do not install the equipment where it
may get wet from rain or water splash.
Continued use of the equipment can cause
fire or electrical shock. Contact a FURUNO
agent for service.
Water in the equipment can cause fire,
electrical shock or damage to the equipment.
Do not place liquid-filled containers on
the top of the processor unit.
Fire or electrical shock may result if the
liquid enters the equipment.
NOTICE
Observe the following compass safe
distances to prevent interference to a
magnetic compass:
Standard
Compass
Steering
Compass
CAUTION
No one navigation device should ever
be solely replied upon for the navigation
of a vessel.
Display unit
SC-602
Processor unit
SC-1201/1201D
Antenna unit
SC-1203F
DGPS beacon
antenna GR-8
0.5 m
1.3 m
0.3 m
0.3 m
0.3 m
0.8 m
0.3 m
0.3 m
Always confirm position against all avail-
able aids to navigation, for safety of vessel
and crew.
Use the proper fuse.
Use of a wrong fuse can result in damage
to the equipment.
i
TABLE OF CONTENTS
FOREWORD ..................................................................................................................iv
SYSTEM CONFIGURATION ...........................................................................................v
EQUIPMENT LIST..........................................................................................................vi
SOFTWARE VERSION LIST.........................................................................................vii
SPECIFICATIONS.....................................................................................................SP-1
1 PRINCIPLE OF OPERATION................................................................................. 1-1
2 INSTALLATION...................................................................................................... 2-1
2.1 Mounting Considerations..................................................................................................... 2-1
2.1.1 SC-series antenna unit ............................................................................................. 2-1
2.1.2 Display unit, processor unit....................................................................................... 2-3
2.2 Installing the Antenna Units................................................................................................. 2-4
2.2.1 SC-series antenna unit ............................................................................................. 2-4
2.2.2 DGPS antenna unit................................................................................................... 2-7
2.3 Installing the Processor Unit................................................................................................ 2-9
2.3.1 Deck mount............................................................................................................... 2-9
2.3.2 Bulkhead mount...................................................................................................... 2-10
2.3.3 Installation on the underside of a desk................................................................... 2-12
2.3.4 Adjusting for orientation error ................................................................................. 2-14
2.4 Installing the Display Unit .................................................................................................. 2-14
2.4.1 Desktop, overhead mounting.................................................................................. 2-14
2.4.2 Flush mounting ....................................................................................................... 2-15
2.5 Wiring................................................................................................................................. 2-16
2.6 Initial Settings .................................................................................................................... 2-19
2.6.1 Confirming satellite status; choosing mounting method......................................... 2-19
2.6.2 Choosing heading source....................................................................................... 2-20
2.6.3 Heading data format ............................................................................................... 2-21
2.7 Connection of External Equipment.................................................................................... 2-22
2.8 Installing the DGPS Beacon Receiver Kit ......................................................................... 2-22
3 OPERATION........................................................................................................... 3-1
3.1 Controls................................................................................................................................ 3-1
3.2 Turning the Power On/Off.................................................................................................... 3-2
3.3 Panel Illumination, Display Contrast.................................................................................... 3-2
3.4 Choosing a Display.............................................................................................................. 3-3
3.4.1 Description of displays.............................................................................................. 3-3
3.5 Alarms.................................................................................................................................. 3-5
3.6 Confirming Satellite Status .................................................................................................. 3-6
3.7 GPS Setup........................................................................................................................... 3-7
3.7.1 Displaying the GPS setup menu............................................................................... 3-7
3.7.2 GPS SETUP menu description................................................................................. 3-7
ii
3.8 Output Data..........................................................................................................................3-8
3.8.1 Heading.....................................................................................................................3-8
3.8.2 Navigation data .........................................................................................................3-9
3.8.3 Interface ....................................................................................................................3-9
3.8.4 Log pulse.................................................................................................................3-10
3.8.5 Talker identifier mnemonics ....................................................................................3-10
3.9 System Setup..................................................................................................................... 3-11
3.9.1 Geodetic data.......................................................................................................... 3-11
3.9.2 Units of measurement.............................................................................................3-12
3.9.3 Using local time.......................................................................................................3-12
3.9.4 Time format .............................................................................................................3-12
3.9.5 Demonstration mode...............................................................................................3-13
3.10 DGPS Setup.......................................................................................................................3-13
3.10.1 Manual DGPS setup ...............................................................................................3-13
3.10.2 Programming user beacon stations ........................................................................3-15
3.10.3 Editing user beacon stations...................................................................................3-16
3.10.4 Erasing individual user stations ..............................................................................3-17
3.10.5 Erasing all user beacon stations.............................................................................3-17
3.11 OTHERS Menu..................................................................................................................3-18
3.12 TRIP Menu.........................................................................................................................3-19
3.13 Resetting Distance Run .....................................................................................................3-19
4 MAINTENANCE, TROUBLESHOOTING............................................................... 4-1
4.1 Preventive Maintenance ......................................................................................................4-1
4.2 Troubleshooting ...................................................................................................................4-2
4.3 Diagnostics...........................................................................................................................4-2
4.4 Program Number .................................................................................................................4-5
4.5 Clearing Data .......................................................................................................................4-5
4.6 Replacement of Battery .......................................................................................................4-6
4.7 Replacement of Fuse...........................................................................................................4-7
4.8 Error Messages....................................................................................................................4-7
APPENDIX ..................................................................................................................A-1
Menu Tree.....................................................................................................................................A-1
Geodetic Chart Codes ..................................................................................................................A-2
Digital Interface.............................................................................................................................A-3
Input/Output Ports...................................................................................................................... A-10
Parts Location.............................................................................................................................A-11
Parts List .................................................................................................................................... A-12
PACKING LISTS .........................................................................................................A-1
OUTLINE DRAWINGS ................................................................................................D-1
INTERCONNECTION DIAGRAMS..............................................................................S-1
INDEX...................................................................................................................Index-1
Declaration of Conformity
iii
FOREWORD
A Word to the Owner of the SC-120
FURUNO Electric Company thanks you for purchasing the FURUNO SC-120
Satellite Compass. We are confident you will discover why the FURUNO name
has become synonymous with quality and reliability.
For over 50 years FURUNO Electric Company has enjoyed an enviable
reputation for quality and reliability throughout the world. This dedication to
excellence is furthered by our extensive global network of agents and dealers.
Your satellite compass is designed and constructed to meet the rigorous
demands of the marine environment. However, no machine can perform its
intended function unless properly installed and maintained. Please carefully read
and follow the operation and maintenance procedures set forth in this manual.
We would appreciate feedback from you, the end-user, about whether we are
achieving our purposes.
Thank you for considering and purchasing FURUNO.
Features
The SC-120 is a new satellite compass designed with FURUNO’s advanced
GPS kinematic technology. This compass finds a wide range of applications for
any type of ships and mobile units at sea or on land.
The main features are
•
•
•
Perfect for use as heading sensor for Radar/ARPA, AIS, ECDIS, scanning
sonar, and video plotter
There are no mechanical parts such as gimbals or rotating motor, thus the
compass is free from routine maintenance
The performance is not affected by geomagnetism thus it is suitable for use on
any vessel
•
•
•
No need for speed correction like a gyrocompass
Short settling time - four minutes
Provides all necessary functions as a GPS navigator.
iv
SYSTEM CONFIGURATION
The SC-120 consists of three SC-series antennas, a display unit and a
processor unit. The tri-antenna system helps reduce the influence of ship's
motion (rolling).
Antenna Unit
SC-1203
DGPS
Beacon Antenna
GR-800-1-S
Display Unit
SC-602
Radar
Autopilot
Beacon Receiver Kit
GR-7001
VideoPlotter
Current Indicator
Scanning Sonar
ECDIS
Heading Data
Analog data
Processor Unit
SC-1201/SC-1201D
Speed alarm/
Heading alarm
(Contact)
Repeater Compass
Autopilot
Repeater I/F
GPS fix
Gyro heading may be
supplied through AD-100
Gyro Converter
(For primary gyrocompass
and backup SC-120) or
Doppler Speed Log
COG, SOG
Time/Date
Pitch/Roll
Radar,
Plotter, etc.
2 ports
Option
12-24 VDC
System configuration
v
EQUIPMENT LIST
Standard supply
Name
Type
SC-1203F
Code No.
Qty
Remarks
Antenna Unit
—
1
DGPS
Antenna
No whip
antenna
For
SC-1201-D
GR-800-SC-1-S
—
1
1
1
Display Unit
SC-602
—
—
—
SC-1201
SC-1201-D
Processor Unit
With beacon receiver
Accessories for Antenna Unit
CP20-02241
CP20-02210
CP20-02203
000-041-743
—
1
1
Accessories for Display Unit
Tapping screw, 5X20, 4 pcs.
Accessories for Processor Unit
MJ-A3SPF0013-035
MJ-A6SPF0007-100
MJ-A7SPF0006-100
CP20-02221
Installation
Materials
CP20-02220
000-041-748
1
Accessories
Spare Parts
FP14-02801
SP20-00901
—
1
1
Cover
004-377-600
Accessories for Processor Unit
Optional equipment
Name
Type
Code No.
Qty
Remarks
For AD-10 output,
connector at one end, 5 m
MJ-A6SPF0003-050 000-117-603
MJ-A6SPF0007-100 000-125-237
MJ-A6SPF0012-100 000-133-817
1
1
1
1
For AD-10 output,
connector at both ends,
10 m
Cross for NMEA output,
10 m
For beacon/log/alarm
signal output, connector at
one end, 5 m
Cable Assy.
MJ-A7SPF0003-050 000-136-730-01
CP20-01700
CP20-01710
004-372-110
004-372-120
30 m
50 m
Antenna
Cable Set
3 pcs, for
SC-1203
1
1
DGPS Beacon
Receiver Kit
GR-7001-K
000-041-738
Flush Mount F OP20-29
Flush Mount S OP20-17
000-041-405
000-040-720
004-396-440
004-396-450
1
1
For display unit
For display unit
For DGPS, 30 m
For DGPS, 60 m
OP08-15-30
OP08-15-60
Extension
Cable
1
1
Antenna
Cable Set
OP08-17
004-392-510
For DGPS antenna
Whip Antenna FAW-1.2
Whip Antenna 04S4176
000-130-046
000-112-845
004-378-230
1
1
1
1.2 m
2.6 m
Flange
OP20-31
vi
SOFTWARE VERSION LIST
DISPLAY UNIT:
205-1312-009
PROCESSOR UNIT: 205-1311-016
GPS1:
GPS2:
GPS3:
DGPS:
205-1313-004
205-1313-004
205-1313-004
085-0182-002
vii
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SPECIFICATIONS OF SATELLITE COMPASS
SC-120
1
GENERAL
1.1 Receiver Type
1.2 RX Frequency
1.3 Class of Service
12 discrete channels GPS
1575.42 MHz (L1)
Standard Positioning service (SPS) using the C/A code on the L1
frequency
1.4 Processing
All-in-view, 8-state Kalman filter
10 m (GPS), or 5 m (DGPS), 95% of the time
±0.6° (95% static accuracy)
25°/s rate-of-turn
1.5 Position Accuracy
1.6 Heading Accuracy
1.7 Follow-up
1.8 Settling Time
4 minutes
2
DISPLAY
2.1 Display Type
2.2 Effective Area
2.3 Contrast
4.5 inch monochrome LCD, 120 x 64 dots
95 mm (W) x 60 mm (H)
64 steps
2.4 Display Mode
Heading, Nav data, Steering, Compass rose, Rate of turn and Speed
modes
3
INTERFACE
3.1 Heading Output
3 ports: AD-10 or IEC 61162-1 Ed.2
1 port: NMEA 0183 (Ver1.5/2.0)
IEC 61162 Sentences: HDT, HDM, VTG, ZDA, GGA, ROT
3.2 COG, SOG, L/L Output 1 port: IEC 61162-1 Ed.2
1 port: RS-232C level
IEC 61162 Sentences: VTG, GGA, ZDA, GLL, ROT,
PFEC, Gpatt (FURUNO P-sentences)
ATT (Proprietary): incl. pitch, roll and yaw data
$PFEC,GPatt,xxx.x,+xx.x,+xx.x<CR><LF> (Ver. 1.5)
$PFEC,GPatt,xxx.x,+xx.x,+xx.x*hh<CR><LF> (Ver. 2.0)
1 port: 200/400 pulse/nm (closure signal)
1 port: Alarm signal (closure signal)
3.3 Log Output
3.4 Alarm Output
3.5 Heading Input
1 port: Backup Heading (AD-10/IEC 61162 format) from external
heading device
Sentences: HDT, HDG, HDM
(VBW, VHW, VLW for tide direction and speed)
1 port: RTCM SC-104 format for RS-232C
3.6 Beacon Data Input
SP - 1
E7249S01H
Sentences: MSK, GGA
12-24 VDC: 1.1-0.5 A
5
6
POWER SUPPLY
ENVIRONMENTAL CONDITION AND EMC
6.1 Ambient Temperature
Display/Processor Unit -15°C to +55°C, Designed for protected area
Antenna Unit
6.2 Damp heat
6.3 Waterproofing
Antenna Unit
-25°C to +70°C, Designed for exposed area
93%±3% at 40°C
IPX6
Display Unit
IPX5
Processor Unit
6.4 Vibration
6.5 EMC
IPX0
IEC 60945
IEC 60945
7
COATING COLOR
7.1 Display/Processor Unit Panel: N3.0 Newtone No.5 (dark gray)
Cover: 2.5GY5/1.5 (light gray)
7.2 Antenna Unit
N9.5 (white)
8
STANDARDS APPLICABLE
IMO MSC.116(73)
ISO 22090-3
THD standards
Under development
General requirements
IMO A. 694(17)
IEC 60945 version 4 General requirements (EMC tested to 2 GHz)
IMO A.819 (19)
IEC 61108-1
Performance standard for shipborne GPS
Performance standard for shipborne GPS
ITU-R M.1371 for AIS Rate of turn
SP - 2
E7249S01H
1 PRINCIPLE OF OPERATION
Own ship's heading can be determined by decoding the data in the carrier
frequency in addition to ordinary GPS parameters. In principle, a pair of two
antennas A1(ref) and A2(fore), each connected with an associated GPS engine
and processor, are installed along the ship's fore-and-aft line. GPS systems at
A1 and A2 calculate the range and azimuth to the satellite. Difference in range
between A1 and A2 is ∆λ + nλ where λ is 19 cm. “n” is automatically found
during the initialization stage by receiving three satellites. A fraction of a carrier
wavelength, ∆λ, is processed by FURUNO’s advanced kinematic technology in
geographical survey, thus determining a vector (range and orientation) A1 to A2.
In reality, a third antenna is used to reduce the influence of pitch, roll and yaw,
and five satellites are processed to obtain 3D data. If the GPS signal is blocked
by a tall building or the vessel is under a bridge, the 3-axis solid-state angular
rate gyros in the processor unit take place of the satellite compass, maintaining
the current heading continuously.
Heading
ine
l
Antenna A3
d-aft
n
a
ore-
F
θ
Antenna A2
nλ
λ
heading
e
decid
Difference between the
range from satellite to
antenna 1 and the range
to antenna 2.
o
t
∆λ
ector
V
Antenna A1
Principle of satellite compass operation
1-1
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2 INSTALLATION
2.1
Mounting Considerations
2.1.1
SC-series antenna unit
General
• Keep the length of antenna cable in mind when selecting a mounting location.
The cable comes in lengths of 15 meters (standard supply), or 30 m or 50 m
(optional lengths).
• Select a location where vibration and shock are minimal.
Installing the antenna above superstructures
The antenna must be mounted above all other structures on the vessel to obtain
an unobstructed view of the satellites regardless of vessel heading. Failure to do
so will cause shadows and multipath reflection problems.
Mast
SC-series Antenna
Radar Antenna
Bridge
Example of proper installation
Installing the antenna below superstructures
If it is not possible to mount the
NOTICE
antenna above all superstructures on
the vessel, as shown in the illustration
above, shading and multipath
problems may occur on at least one
heading, and possibly more. To
possibly avoid those problems,
observe the guidelines in this section.
If the antenna is installed below any
superstructure, the installation must
be done over a two-day period, following
the procedure in the service manual.
At least 12 hours are required to capture
tracking data to measure multipath indexes
and locate areas of shading.
2-1
2. INSTALLATION
• The horizontal separation between the antenna and masts must be as
follows:
Mast diameter Separation distance (minimum)
10 cm
30 cm
1.5 m
3 m
-80
+80
Separation degrees
• Keep the length of antenna cable in mind when selecting a mounting location.
The cable comes in lengths of 15 meters (standard supply), or 30 m or 50 m
(optional lengths).
• The field of view above the antenna should be as shown below, ±80° against
zenith. To avoid reflections from masts and the like, locate the antenna well
away from the shadows of the radar mast, etc.
Zenith
-80 +80
SC-series antenna
SIDE VIEW
Antenna and field of view
• Referring to the figure below, locate the antenna away from objects which
might block reception, such as a mast.
SC-series Antenna
Less than 10
Mast, etc.
2-2
• Locate the antenna above the radar antenna, out of the radar beam.
Sc-series Antenna
Radar Antenna
Example of improper installation
Location influenced
Radar Antenna
by reflected wave.
Reception blocked by mast.
NO! UNSUITABLE LOCATION
SC-series antenna located
SC-series
Antenna
below all other structures
Bridge
Example of improper installation
2.1.2
Display unit, processor unit
• Choose a location where vibration and shock are minimal.
• Install the units well away from locations subject to rain and water splash.
• Locate the units well away from air conditioner vents.
• Keep the units out of direct sunlight because of heat that can build up inside
their cabinets.
• Choose a well-ventilated location.
• For the display unit, choose a location where it can be easily operated.
• Leave sufficient space around the units to permit access for maintenance. See
the outline drawing for recommended maintenance space.
2-3
2. INSTALLATION
2.2
Installing the Antenna Units
2.2.1
SC-series antenna unit
1. Prepare an installation post for the antenna in accordance with the illustration
shown below.
15
Recommended Flange
(Option)
Name: Flange
Type: OP20-31
Code No.: 004-378-230
Gasket
(supplied in installation materials)
BOW
Weld all the way around.
Bow direction is
between antennas
#1 and #2.
Post should be constructed from
stainless steel and measure
4mm or larger in thickness.
60.5 mm
3 mm or less
The width of welding should be
within 3 mm from the mast so
that the welding does not touch
the spring washer.
Installation post
2-4
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