Furuno Boating Equipment SC 120 User Manual

SATELLITE COMPASS  
SC-120  
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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
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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  
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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  
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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  
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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
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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  
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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  
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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  
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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  
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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  
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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  
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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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2. INSTALLATION  
2. Fix the antenna unit to the post as shown below.  
3
1
2
Fix the antennas #1 and #2 on  
the fore-and-aft line of the ship,  
with the #2 a ntenna forward  
of the #1.  
Set the antenna  
unit to the flange.  
Flat washer  
Spring washer  
Nut  
(Torque: 29.58 Nm)  
Fastening antenna unit to a post  
3. Coat each nut, bolt and washer with silicone rubber for waterproofing.  
Coat bolt, nut and  
washer completely  
with silicone rubber.  
Coating bolt, nut and washer with silicone rubber  
2-5  
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2. INSTALLATION  
4. As shown below, make a loop in the antenna cable and fasten the antenna  
cable to the antenna post with two cable ties.  
Coat bolt threads with  
Three Bond. Fasten bolt  
with nuts and then coat  
nuts with Three Bond also.  
Coat with Three  
Bond 1211  
(supplied).  
Fix antenna cable.  
5. Coat bolt threads with  
Three Bond 1211.  
Bird-repellent fixture  
Fasten bolts with nuts.  
Coat nuts at the  
bottom of each  
antenna element with  
Three Bond 1211.  
6. Paint post and support  
plate with  
anti-corrosive paint.  
7. Attach “bird-repellent  
fixtures” (supplied) to  
each antenna element  
and center cover as shown right.  
Antenna element  
2-6  
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2. INSTALLATION  
2.2.2  
DGPS antenna unit  
Choose a mounting location for the DGPS antenna considering the points  
mentioned below. DPGS is not necessary for heading determination, however it  
can improve the accuracy of GPS position fixing  
Separate the DGPS antenna at least three meters from a radio antenna.  
Do not install the DGPS antenna within the radar beam.  
1. Mount the DGPS antenna by one of the methods below.  
Screw it into a one-inch threaded pipe.  
Fasten it to a steel post (φ35-φ90) with stainless steel hose clamps (local  
supply).  
CAUTION  
Ground the antenna to  
prevent receiving problems.  
DGPS Antenna (preamp)  
GR-800-SC-1-S  
Whip Antenna  
Spring Washer  
Witt Threads  
Post  
( 35- 90)  
(W25-14)  
Pitch: 1.8143  
Qty: 14  
Hose  
Clamp  
Ground Wire (0.3 m)  
Pipe 27.2  
Ground to the ship’s body  
as shown the right figure.  
Antenna cable  
Tap M4 threads in mast.  
Fasten ground wire with an  
M4 screw.  
Note: Screw the pipe into the  
preamp BEFORE mounting the pipe.  
Mounting onto a threaded pipe  
Mounting with hose clamps  
Mounting the DGPS antenna  
2. Set the spring washer to the whip antenna (local supply) and screw the whip  
antenna into the antenna housing. Coat the washer with silicone sealant to  
prevent loosening.  
3. Drill a tapping hole in the post for an M4 screw and fasten the ground wire  
there.  
2-7  
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2. INSTALLATION  
4. The DGPS antenna is supplied with a 15 m cable. If extension is necessary  
use the extension cable (option). Cover the extension connectors with  
vulcanizing tape and vinyl tape, for waterproofing. Tie tape ends with a cable  
tie.  
Extension Cable: Type: OP08-15-30, Code No.: 004-396-440 (30 m)  
Type: OP08-15-60, Code No.: 004-396-450 (60 m)  
Name  
Type  
Code No.  
Qty  
Remarks  
Connector TNC-SA-JJ  
000-139-113  
1
TNC-PS-3D L30M 000-139-078  
30 m, connector at  
both ends  
Cable  
1
TNC-PS-3D L60M 000-139-080  
60 m, connector at  
both ends  
Waterproofing the extension connector  
For coaxial cable RG-10UY (local supply, max. length 60 m), use the optional  
antenna cable set.  
Antenna cable set Type: OP08-17, Code No.: 004-392-510  
Name  
Type  
Code No.  
000-123-809  
000-139-113  
000-501-514  
Qty Remarks  
Converter Cable Assy. NJ-TP-3DXV-1  
2
1
2
Connector  
Connector  
TNC-SA-JJ  
N-P-7  
*TNC-SA-JJ  
*N-P-7  
Processor  
Unit  
RG-10UY  
15 m  
* Converter cable assy. (supplied with antenna cable set)  
Cable connection when using cable RG-10UY  
2-8  
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2. INSTALLATION  
2.3  
Installing the Processor Unit  
The processor unit should be mounted aligned with the ship’s fore-and-aft line. It  
can be mounted on the deck, bulkhead, or on the underside of a desk. Choose a  
mounting location which allows you to easily view the power lamp on the top of  
the unit and which is within ±2.5° of the ship’s fore-and-aft line.  
2.3.1  
Deck mount  
1. The processor unit is factory adjusted for deck mounting. Fasten the  
processor unit to the mounting location with tapping screws (5 x 20, 4 pcs.).  
The unit can be oriented in one of the directions shown in the figure below.  
After the unit is installed you will specify the mounting method from the menu.  
Mount processor unit  
Reference Direction  
so reference  
direction is within  
2.5 of  
POWER switch  
(power lamp)  
fore-and-aft line.  
Name plate  
Connectors  
Processor Unit, top view  
Bow  
Bow  
Mounting Method: "Floor"  
(Deck)  
Mounting Direction: B  
Mounting Method: "Floor"  
(Deck)  
Mounting Direction: A  
Starboard  
Port  
Starboard  
Port  
DIRECTION "A"  
DIRECTION "B"  
Stern  
Bow  
Stern  
Bow  
Mounting Method: "Floor"  
(Deck)  
Mounting Method: "Floor"  
(Deck)  
Mounting Direction: C  
Mounting Direction: D  
Starboard  
Port  
Port  
Starboard  
DIRECTION "C"  
DIRECTION "D"  
Stern  
Stern  
Processor unit orientation, deck mounting  
2. Fasten the ground wire between the ground terminal on the processor unit  
and the ship’s superstructure.  
2-9  
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2. INSTALLATION  
2.3.2  
Bulkhead mount  
For mounting on a bulkhead, use the bulkhead mounting plate supplied with the  
installation materials.  
1. Unfasten four screws from the top cover to open the front panel.  
2. Unfasten two screws to dismount the angular rate sensor.  
Angular Rate Sensor  
20P8171  
Processor unit, top view  
3. Fasten the bulkhead mounting plate to the angular rate sensor. Align the  
center graduation on the angular rate sensor with the hole of the bulkhead  
mounting plate and tighten fixing screws.  
Hole of bulkhead  
mounting plate  
Scale  
Center Mark  
Angular Rate Sensor  
Mounting Base  
Fixing Screw  
Angular rate sensor, top view  
2-10  
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2. INSTALLATION  
4. Loosen four screws on the angular rate sensor mounting base, and then  
fasten the bulkhead mounting plate to the angular rate sensor mounting  
base.  
Angular Rate Sensor  
Bulkhead Mounting Plate  
Top Fixing  
Hole (x2)  
Angular  
Rate  
Sensor  
Mounting  
Base  
20P8171  
Processor unit, top view  
5. Close the top cover of the processor unit.  
6. Partially screw in two tapping screws for the top fixing holes of the processor  
unit in the mounting location. Hang the processor unit on the tapping screws,  
using the top fixing holes. Screw in two tapping screws for the bottom fixing  
holes, and then tighten the top fixing holes.  
2-11  
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2. INSTALLATION  
The unit can be oriented as shown in the figure below. After the unit is  
installed you will specify the mounting method from the menu.  
Reference Direction  
Bulkhead  
Mount processor unit so  
reference direction is within  
2.5° of fore-and-aft line.  
Name Plate (other side)  
Mounting Method: "Wall"  
(Bulkhead)  
Mounting Direction: A  
Direction  
A
Direction B  
Direction D  
Mounting Method: "Wall"  
(Bulkhead)  
Mounting Direction: D  
Mounting Method: "Wall"  
(Bulkhead)  
Mounting Direction: B  
Direction  
C
Mounting Method: "Wall"  
(Bulkhead)  
Mounting Direction: C  
Processor unit orientation, bulkhead mounting  
7. Fasten the ground wire between the ground terminal on the processor unit  
and the ship’s superstructure.  
2.3.3  
Installation on the underside of a desk  
The processor unit may be mounted on the underside of a desk as shown in the  
figure below. Do not install it on the overhead.  
Desk  
Name Plate  
Installation of processor unit on the underside of a desk  
2-12  
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2. INSTALLATION  
The reference direction is as shown below. The mounting method is the same as  
that for mounting on the deck.  
Reference Direction  
Mount processor unit so  
reference direction is  
within 2.5° of  
fore-and-aft line.  
Name plate (other side)  
POWER switch  
(power lamp)  
Connectors  
Processor Unit, rear view  
Bow  
Bow  
Mounting Method: Invert  
Mounting Direction: B  
Mounting Method: Invert  
Mounting Direction: A  
Port  
Starboard  
Starboard  
Port  
DIRECTION "A"  
DIRECTION "B"  
Stern  
Bow  
Stern  
Bow  
Mounting Method: Invert  
Mounting Direction: D  
Mounting Method: Invert  
Mounting Direction: C  
Port  
Port  
Starboard  
Starboard  
DIRECTION "C"  
DIRECTION "D"  
Stern  
Stern  
Processor unit orientation, installation on the underside of a desk  
Mount the processor unit on a level surface with its name plate facing the bow,  
stern, port or starboard.  
2-13  
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2. INSTALLATION  
2.3.4  
Adjusting for orientation error  
It may be impossible to perfectly align the processor unit on the fore-and-aft or  
port-and-starboard line. Open the top cover, loosen the two fixing screws on the  
angular rate sensor and turn. For example, if the orientation error is 2.5° to port,  
rotate the sensor 2.5° starboard. The range of adjustment is -45° to +45°. Close  
the top cover after completing the adjustment.  
Fore-aft line or Port-starboard  
direction  
Reference  
Processor Unit  
Direction  
Alignment hole on processor unit  
Scale, every  
2.5  
Bulkhead Mounting  
Plate  
Fixing Screw  
Angular rate sensor, top view  
2.4  
Installing the Display Unit  
2.4.1  
Desktop, overhead mounting  
1. Fasten the hanger to the mounting location with four tapping screws  
(supplied). See the outline drawing for mounting dimensions.  
2. Screw the knobs into the display unit.  
3. Set display unit to the hanger and tighten the knobs.  
4. Run the ground wire between the ground terminal on the display unit and the  
ship’s superstructure.  
Desktop  
Overhead  
Display unit mounting methods  
2-14  
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2. INSTALLATION  
2.4.2  
Flush mounting  
Two types of flush mounts are available. See the outline drawing at the back of  
the manual for details.  
Flush mount “F”  
Flush mount “F” kit  
Type: OP20-29, Code No: 000-041-405)  
Name  
Cosmetic Panel  
Tapping Screw  
Hex Bolt  
Type  
20-016-1051  
5X20  
Code No.  
100-251-370  
000-802-840  
000-862-127  
000-864-260  
Qty  
1
4
M6X12  
M6  
2
Spring Washer  
2
1. Make a cutout in mounting location. The dimensions are 183(W) x 92(H) mm.  
2. Fasten the cosmetic panel to the display unit with hex bolts and flat washers.  
3. Fasten the display unit to the mounting location with tapping screws.  
Flush mount “S”  
Flush mount “S” kit  
Type: OP20-17, Code No.: 000-040-720)  
Name  
Flush Mount Fixture  
Wing Bolt  
Type  
Code No.  
Qty  
2
20-007-2401 100-183-190  
M4X30  
M4  
000-804-799  
000-863-306  
000-862-127  
000-864-260  
4
Wing Nut  
4
Hex Bolt  
M6X12  
M6  
2
Spring Washer  
2
1. Make a cutout in the mounting location. The dimensions are 167(W) x 92(H)  
mm.  
2. Place the display unit in the cutout.  
3. Fix the display unit to the two flush mount fixtures with hex bolts and spring  
washers.  
4. Screw the wing nut on the wing bolt.  
5. Fix the display unit with the wing bolt and then tighten the wing nut.  
Flush mount “S”  
2-15  
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2. INSTALLATION  
2.5  
Wiring  
This section covers general wiring. For further details see the interconnection  
diagram at the back of this manual.  
ANTENNA UNIT  
SC-1203F  
DISPLAY UNIT  
SC-602  
SATELLITE  
COMPASS  
SATELLITE  
*
COMPASS  
Note 1  
PROCESSOR UNIT  
SC-1201/SC-1201D  
Cable Tie  
(Long life, temperature  
resistant, local supply)  
MJ-A7SPF0006-100,  
10 m  
DGPS ANTENNA  
GR-800-1-S  
TNC-PS-3D (15 m)  
12-24 VDC  
MJ-A3SPF0013-035,  
3.5 m  
TPPX6-3D2V-15M, 15 m  
See Note 2.  
General wiring diagram  
The length of the cable between the display unit and processor unit is 10 m.  
Connect it to the DISPLAY port on the processor unit.  
The antenna cable is 15 meters (standard) long. Connect the three coaxial  
cables to the processor unit according to cable color as below. Incorrect  
connection will result in wrong heading.  
Port on  
Antenna  
TPPX6-3D2V-15M  
Processor Unit  
GPS ANT 1  
GPS ANT 2  
GPS ANT 3  
Antenna Element 1  
Antenna Element 2  
Antenna Element 3  
No color  
Yellow  
Red  
2-16  
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2. INSTALLATION  
Note 1: Instead of TPPX6-3D2V, three Japan Industrial Standard coaxial cables  
3D2V (local supply) or equivalent can be used as antenna cables.  
3D2V  
50  
5.3 mm  
Core  
0.96 mm  
Insulator T1.02 mm  
Shield  
Sheath  
Sectional view of coaxial cable 3D2V  
Note 2: The optional antenna cable set (CP20-01700 or CP20-01710, 3 sets)  
allows you to extend the antenna cable to 30 m or 50 m. See the next  
page for how to attach the connector.  
2-17  
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2. INSTALLATION  
How to attach connector N-P-8DFB  
Outer Sheath  
Inner Sheath Shield  
Armor  
(Dimensions in millimeters.)  
30  
50  
Cover with heat-shrink tubing and heat.  
10  
Cut off insulator and core by 10 mm.  
Twist shield end.  
Slip on clamp nut,  
gasket and clamp as shown left.  
Clamp  
Gasket  
(reddish  
brown)  
Clamp Nut  
Aluminum Foil  
Fold back shield over clamp and trim.  
Trim shield here.  
Insulator  
Cut aluminum foil at four places,  
90 from one another.  
Fold back aluminum foil onto shield  
and trim.  
Trim aluminum  
tape foil here.  
1
5
Expose the insulator by 1 mm.  
Expose the core by 5 mm.  
Pin  
Clamp Nut  
Shell  
Slip the pin onto the conductor.  
Solder them together through the  
hole on the pin.  
Solder through  
the hole.  
Insert the pin into the shell.  
Screw the clamp nut into the shell.  
(Tighten by turning the clamp nut.  
Do not tighten by turning the shell.)  
How to attach connector N-P-8DFB  
Connect the DGPS antenna cable to the BEACON ANT port on the processor  
unit. The standard cable is 15 m long. With the optional extension cable the  
cable can be extended to 30 m or 60 m.  
2-18  
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2. INSTALLATION  
2.6  
Initial Settings  
Follow the procedures in this section to enter initial settings.  
NOTICE  
Improper menu settings may stop output of  
data and display the message "RATE  
ERROR." Be sure to enter correct data.  
2.6.1  
Confirming satellite status; choosing mounting method  
1. Turn on the processor unit and press the [MENU] key to show the menu.  
MAIN MENU  
SATELLITE  
DGPS  
I/O SETUP  
INST MENU  
ERASE  
ALARMS  
MESSAGES  
GPS SETUP  
SYS SETUP  
SOFT VER.  
OTHERS  
TRIP MENU  
Main menu  
2. Use the Omnipad ( ) to choose “INST MENU” and press the [ENT] key.  
INSTALLATION SETUP  
MOUNTING  
DIRECTION  
: FLOOR  
: A  
LANGUAGE  
: ENG  
Installation setup menu  
3. Confirm that “MOUNTING” is selected and press the [ENT] key.  
4. Use the Omnipad to choose the mounting method: “FLOOR”, “WALL” or  
“INVERT” as appropriate.  
5. Press the [ENT] key.  
6. Choose “DIRECTION” and press the [ENT] key.  
7. Use the Omnipad to choose mounting direction (“A ”, “B ”, “C” or “D”) as  
appropriate. Refer to section 2.3.1.  
8. Press the [ENT] key.  
9. Press the [SAT STATUS] key.  
Satellites used for  
measurement  
"OK" displayed when  
SAT TRACKING STATUS  
TIMER 5 '52" OK  
NO. GOOD STATUS  
the "GOOD" column  
shows that the number  
of satellites acquired is  
five or more.  
Satellites  
being  
tracked  
GPS1  
GPS2  
GPS3  
8
7
8
8
7
8
D3D  
D3D  
D3D  
"3D" shown when no  
beacon receiver is used.  
Satellite tracking status display  
2-19  
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2. INSTALLATION  
When the system is turned on for the first time it is in the “cold start” state, which  
means there is no satellite data (almanac data) stored. In this condition it takes  
about 20 minutes to find heading, indicated by displaying “OK.” (Once almanac  
data is stored it takes about five minutes to find heading.) The timer at the top  
left corner of the screen shows time since power on. If OK is not displayed within  
30 minutes after turning on the power, the antenna mounting location may not be  
suitable. It is suspected that the number of  
satellites in view is less than five due to  
BOW  
Antenna  
Element  
signal blockage. Clear the problem and  
then check status on the status display.  
2
- Direction  
Antenna  
Element  
3
+ Direction  
If the heading error is between 5° and 10°,  
loosen the nut at the center of the antenna  
unit and adjust antenna orientation, while  
watching the heading indication on the  
display.  
PORT  
Antenna  
Element  
1
Adjusting antenna orientation  
2.6.2  
Choosing heading source  
Choose the source of heading data as below:  
CAUTION  
1. Never switch from internal to external  
heading while the autopilot is in the  
automatic mode. Change to the  
manual mode before switching.  
2. The data of external heading must  
come from type-approved sensor,  
in case of SOLAS vessel.  
1. Press the [HDG SETUP] key.  
OFFSET : Heading offset. See service manual for instructions.  
"SERVICE ONLY" means heading offset shown  
for display only.  
HEADING : Select heading source. Choose INT for normal use.  
If a gyrocomapss is connected for primary means,  
leaving this equipment as backup, choose EXT.  
INT HDG : Bow heading. Includes offset.  
HEADING SETUP  
OFFSET  
: +000.0  
(SERVICE ONLY)  
HEADING  
: INT  
INT HDG  
EXT HDG  
- - - . -  
- - - . -  
EXT HDG : Heading fed from external equipment.  
Heading setup menu  
2. Use the Omnipad to choose HEADING.  
3. Press the [ENT] key.  
4. Choose INT or EXT as appropriate. Normally choose INT. If the GPS sensor  
is not working and a heading sensor such as a gyrocompass is available,  
choose EXT.  
2-20  
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2. INSTALLATION  
Note: When switching from internal heading to external heading when using  
an autopilot in the auto mode, set the autopilot in the manual mode  
BEFORE switching, adjust heading at the autopilot and then switch to  
the auto mode.  
5. Press the [ENT] key.  
6. Press the [DISP] key to close the menu.  
2.6.3  
Heading data format  
1. Turn off the processor unit.  
2. Unfasten four screws from the processor unit to remove the top cover.  
3. Choose the heading format of the equipment connected to the ports HDG  
OUT 1, HDG OUT 2 and HDG OUT 3 with the jumper wires on the circuit  
board 20P8171, referring to the table below. The default setting for each port  
is AD-10.  
Jumper wire and format on the circuit board 20P8171  
Port  
HDG OUT  
1
Format  
AD-10  
NMEA  
AD-10  
NMEA  
AD-10  
NMEA  
Setting  
Remarks  
J11 < - > J13  
J11 < - > J12  
J14 < - > J16  
J14 < - > J15  
J17 < - > J19  
J 17 < - > J18  
NMEA and AD-10 are identified  
on the circuit board. Choose  
NMEA for IEC 61162-1  
sentences.  
HDG OUT  
2
HDG OUT  
3
NMEA  
(IEC 61162)  
ANGULAR  
RATE SENSOR  
HEAD1  
AD-10  
20P8171  
NMEA (IEC 61162)  
HEAD2  
AD-10  
AD-10  
HEAD3  
NMEA (IEC 61162)  
Processor unit, cover opened, top view  
2-21  
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2. INSTALLATION  
2.7  
Connection of External Equipment  
All external equipment are terminated on the rear panel of the processor unit.  
Output: Plotter, Radar in  
NMEA 0183 (IEC 61162)  
Cable: MJ-A6SPF0012-100 (option)  
Input: External DGPS Beacon  
Receiver in RTCM SC-104 Format  
Output: Radar, Auto Pilot,  
Plotter, Scanning Sonar,  
Cable: MJ-A7SPF0003-050 (option)  
Current Indicator in AD-10 Format,  
NMEA 0183 (IEC 61162)  
Cable: MJ-A6SPF0007-100 (Inst. Mat. 1)  
MJ-A6SPF0012-100 (Option)  
Output: Log Pulse.  
Cable: MJ-A7SPF0003-050  
(option)  
MJ-A6SPF0003--050 (Option)  
12-24 VDC  
* = The data of external heading must  
BEACON  
EXT  
DISPLAY  
LOG/ALARM  
HDG IN  
NAV OUT  
HDG OUT  
2
come from type-approved sensor,  
in case of SOLAS vessel.  
1
1
3
ANT  
GPS ANT  
2
2
4
1
3
Input: Heading Sensor*, Gyrocompass* in  
Output: PC in NMEA 0183 (IEC 61162)  
Cable: D-sub 9P  
AD-10 Format, NMEA 0183 (IEC 61162)  
Doppler Speed Log/Current Indicator  
in NMEA0183 (IEC 61162)  
Output: PC in NMEA 0183 (IEC 61162)  
Cable: D-sub 9P  
Cable: MJ-A6SPF0003-100 (Option)  
MJ-A6SPF0007-100 (Option)  
MJ-A6SPF0012--050 (Option)  
External heading input format and output sentence  
AD-10: Header of IEC 61162 data sentence chosen on menu is output.  
IEC 61162: When EXT data is output from this equipment, NMEA Header (Identifier) of the  
external data is output as it is without changes.  
Processor unit, rear view  
2.8  
Installing the DGPS Beacon Receiver Kit  
The optional DGPS beacon receiver provides DGPS capability. The beacon  
receiver assy. is installed in the processor unit. A DGPS antenna is necessary.  
DGPS Beacon Receiver Kit  
Type: GR-7001-K Code No. 000-041-738  
Name  
Type  
GR-8  
SS7200N  
M10  
SC-601  
TNCBPJ(140) 000-143-748  
Code No.  
000-040-660  
000-570-239  
000-864-261  
004-377-860  
Qty  
1
2
1
1
Remarks  
Antenna  
Hose Clamp  
Spring Washer  
DGPS Receiver Assy.  
Cable Assy.  
1
w/toothed washer and nut  
PH Connector  
Pan Head Screw  
DGPS Station List  
20-061(7-6P)  
M3X8  
J49-80010  
FAW-1.2  
04S4176  
004-377-770  
000-881-404  
000-808-435  
000-130-046  
000-112-845  
1
4
1
1.2 m  
2.6 m  
Whip Antenna  
1
2-22  
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2. INSTALLATION  
Procedure  
1. Open the top cover processor unit.  
2. Open the cover of the DGPS receiver assembly.  
3. Connect the cable TNCBPJ(140) to J1 on the DGPS receiver assembly.  
4. Remove the plug at the rear of the processor unit.  
5. Pass the cable TNCBPJ(140) through the hole made at step 4 and fasten it  
with the toothed washer and nut.  
6. Fasten the DGPS receiver assembly at the location shown below.  
Panhead Screw  
M3X8, 2 pcs.  
DGPS Receiver  
Assembly  
Cover  
J2  
J1  
Cable Assembly  
TNCBPJ(140)  
Toothed Washer  
Nut  
Torque  
1.37 0.98 Nm  
Plug  
Processor unit, cover removed, top view  
7. Connect the 6P connector of the PH connector 20-061(7-6P) to J2 on the  
DGPS receiver assy.  
8. Connector the 7P connector of the PH connector 20-061(7-6P) to J10 on the  
circuit board 20P8171.  
2-23  
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2. INSTALLATION  
9. Fix the PH connector assy. with a clamp as shown in the illustration below.  
Pass PH connector  
through clamp  
DGPS Receiver  
Assy.  
Processor unit, cover removed, top view  
10.Close the top cover of the processor unit.  
11.Mount the DGPS antenna and whip antenna, referring to section 2.2.  
2-24  
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3 OPERATION  
3.1  
Controls  
Omnipad: Selects menu items;  
shifts cursor.  
MENU key: Opens/closes menu.  
ENT key: Terminates keyboard input.  
DISP key: Selects display.  
DIM key: Adjusts panel illumination,  
display contrast.  
HDG SETUP key: Sets up the equipment.  
SAT STATUS key: Shows status display  
See illustration below for description.  
HOW TO REMOVE THE COVER  
Press here and pull toward  
you to remove cover.  
Satellites used for  
measurement  
"OK" displayed when  
SAT TRACKING STATUS  
TIMER 5 '52" OK  
NO. GOOD STATUS  
the "GOOD" column  
shows that the number  
of satellites acquired is  
five or more.  
Satellites  
being  
tracked  
GPS1  
GPS2  
GPS3  
8
7
8
8
7
8
D3D  
D3D  
D3D  
"3D" shown when no  
beacon receiver is used.  
Display unit  
CAUTION  
Reduced accuracy may occur in case  
of unfavorable satellite constellation,  
worsened HDOP, etc.  
Always confirm position against other  
navigation devices to verify reliability.  
3-1  
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3. OPERATION  
3.2  
Turning the Power On/Off  
Use the power switch on the processor unit to turn the power on and off.  
POWER  
Switch  
Processor unit  
The display starts up with the last-used display.  
Note 1: Turn on external equipment AFTER the SC-120 is showing reliable  
heading data, to prevent heading output error.  
Note 2: The display flashes when backup heading data is used.  
3.3  
Panel Illumination, Display Contrast  
1. Press the [DIM] key.  
4
45  
Dialog box for adjustment of panel illumination, display contrast  
2. Press or on the Omnipad to adjust panel illumination.  
3. Press or on the Omnipad to adjust display contrast.  
4. Press the [ENT] key.  
3-2  
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3. OPERATION  
3.4  
Choosing a Display  
Use the [DISP] key to show a display desired. Each press of the key changes  
the display in the sequence shown in the paragraph below.  
3.4.1  
Description of displays  
Heading display  
The heading display shows heading, course, speed, date, time and  
position-fixing method. The heading status mark changes in the sequence  
shown below. The “final calculations” mark disappears after heading becomes  
reliable, which is approximately 90 seconds after that mark appears.  
Date  
Position-fixing status indications  
(day/month/year)  
Position-  
fixing  
status  
2D  
2D GPS position fix  
3D GPS position fix  
2D DGPS position fix  
3D DGPS position fix  
Simulation mode  
3D  
Time  
D2D  
D3D  
SIM  
23:54:13  
3D 01 DEC 01  
Heading Status Mark  
= Acquiring satellite  
Heading  
HDG  
0 °  
2 8 3  
.
= Calculating heading  
= Final calculations  
kt  
123.4°  
COG  
0.0  
SOG  
Speed over  
ground  
Course over  
ground  
When the data  
of external sensor is input,  
EXT (in reverse video) replaces  
HDG on the Heading, Nav data,  
Steering and Compass displays.  
Heading display  
Nav data display  
The nav data display shows position in latitude and longitude, course, speed,  
date, time and position-fixing method.  
00:00:00  
3D 01 DEC 01  
0°0 0. 0 0 0 ’  
0°0 0. 0 0 0 ’  
N
E
Position in  
Latitude, Longitude  
kt  
278.0°  
0.0  
SOG  
HDG  
Nav data display  
3-3  
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3. OPERATION  
Steering display  
The steering display mainly shows heading, in digital and analog form. The own  
ship mark points to heading on the bearing scale.  
07:54  
3D  
HDG  
0 °  
2 7 8  
.
Lubbers mark  
Bearing  
scale  
250 260 270 280 290 300  
kt  
123.4°  
COG  
0.0  
SOG  
Steering display  
Compass display  
The compass display shows heading by compass direction, pitch and roll The  
compass rose rotates with heading.  
3D  
23:24:01  
NW  
W
N
°
0. 0  
Own ship symbol  
HDG  
SW  
NE  
°
+
0
Pitching  
Rolling  
PIT  
S
E
°
SE  
+
0
ROL  
Compass display  
ROT (Rate-of-Turn) display  
The ROT display provides digital and analog indications of rate of turn.  
3D  
30 20 10  
0
10 20 30  
ROT  
scale  
PORT  
ROT  
STBD  
°/min  
ROT  
1 2  
.
2
ROT display  
Set and Drift display, Distance Run display  
Depending on the setting of DISTANCE DISP on the TRIP menu, the Set and  
Drift display or the Distance Run display is shown. The Set and Drift display  
requires the Doppler Speed Log DS-80 and it shows current direction and  
speed.  
3D  
3D  
SOG  
kt  
SOG  
kt  
21. 1 2.  
2
21. 1 2.  
2
STW  
kt  
STW  
kt  
22.  
2
2
22.  
2
CURRENT  
DISTANCE  
456.78  
nm  
.
8
5
kt  
36.  
Set and Drift display  
Speed and Distance Run display  
Set and drift display, distance run display  
3-4  
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3. OPERATION  
3.5  
Alarms  
The SC-120 can alert you with audio and visual alarms when GPS data and  
DGPS data are lost. To set the alarm mode;  
1. Press the [MENU] key to show the menu.  
MAIN MENU  
SATELLITE  
DGPS  
I/O SETUP  
INST MENU  
ERASE  
ALARMS  
MESSAGES  
GPS SETUP  
SYS SETUP  
SOFT VER.  
OTHERS  
TRIP MENU  
Main menu  
2. Choose ALARMS and press the [ENT] key.  
ALARMS  
BUZZER : LONG  
DGPS  
: OFF  
HDG RESTORATION: MAN  
HDG BACKUP: 5MIN  
Alarm menu  
3. Press the [ENT] key.  
Alarm menu, GPS buzzer options  
4. Use or on the Omnipad to choose buzzer type desired.  
SHORT:  
LONG:  
Two short beeps  
Three long beeps  
CONSTANT: Continuous beep  
5. Press the [ENT] key.  
6. Select DGPS, HDG RESTORATION or HDG BACKUP as appropriate.  
DGPS:  
Turns on/off DGPS alarm.  
HDG RESTORATION: Choose how to restore GPS signal, automatically  
or manually.  
HDG BACKUP:  
Choose how long to wait before stopping output of  
heading, when GPS signal is lost.  
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3. OPERATION  
7. Press the [ENT] key.  
OFF  
ON  
MAN  
AUTO  
DPGS options HDG RESTORATION options  
Alarm menu, DGPS buzzer options  
7. Select appropriate option. For HDG BACKUP, use or on the Omnipad to  
set time, from 1 to 5 (minutes).  
8. Press the [ENT] key.  
9. Press the [DISP] key to close the menu.  
3.6  
Confirming Satellite Status  
You can check the receiving condition of each antenna element as follows:  
1. Press the [MENU] key to open the menu.  
2. Choose SATELLITE and press the [ENT] key.  
RX signal level  
Horizontal bar extends  
with signal strength.  
Satellite whose signal  
strength extends past  
the first vertical line  
is used for heading  
calculation.  
Position-  
fixing  
status  
North  
DOP  
3D  
01  
- -  
DOP  
1. 5  
02  
04  
N
07  
06  
05  
02  
10  
08  
06  
Elevation  
angle 5  
07  
- -  
- -  
˚
04  
05  
08  
10  
12  
01  
12  
GPS1  
Antenna  
element  
no.  
Elevation  
angle 45  
Satellites shown in white on black are  
used for calculation of heading.  
˚
Satellite status display  
3. Use or on the Omnipad to choose antenna element for which to confirm  
receiving status  
4. Press the [DISP] key to close the menu.  
3-6  
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3. OPERATION  
3.7  
GPS Setup  
The GPS SETUP menu smooths position and course, averages speed, applies  
position offset, and deactivates unhealthy satellites.  
3.7.1  
Displaying the GPS setup menu  
1. Press the [MENU] key to open the menu.  
2. Choose GPS SETUP and press the [ENT] key.  
GPS SETUP  
SMOOTH POS  
SMOOTH S/C  
LAT OFFSET  
LON OFFSET  
DISABLE SV  
:
:
:
:
:
0SEC  
5SEC  
0.000N  
0.000E  
GPS SETUP menu  
3.7.2  
GPS SETUP menu description  
SMOOTH POS (Smoothing position)  
When the DOP (Dilution of Precision, the index for position-fixing accuracy) or  
receiving condition is unfavorable, the GPS fix may change randomly, even if the  
vessel at anchor. This change can be smoothed by averaging a number of GPS  
fixes. The setting range is from 0 (no smoothing) to 999 seconds. The setting  
range is from 0 (no smoothing) to 999 seconds, and the default is 5 s, which is  
good for rolling period o 5-8 s. The higher the setting the more smoothing.  
However, too high a setting slows updating of position. “0” is the default setting;  
increase the setting if the GPS fix fluctuates largely.  
SMOOTH S/C (Smoothing speed/course)  
Ship’s speed and course are directly measured by receiving GPS satellite  
signals, independent of positions. The data varies with receiving conditions and  
other factors. You can reduce this random variation by increasing the smoothing.  
The higher the setting the more that speed and course are smoothed. If the  
setting is too high, however, the follow-up to actual values gets slower. The  
setting range is from 0 (no smoothing) to 999 seconds.  
LAT/LON OFFSET (L/L position offset)  
If GPS fixes are erroneous while at anchor, enter a position offset to compensate  
for position error. Consult a nautical chart to determine latitude and longitude  
differences between the chart and GPS display. Enter that value as the offset.  
DISABLE SV (Disable satellite)  
Every GPS satellite is broadcasting abnormal satellite number(s) in its Almanac,  
which contains general orbital data about all GPS satellites. Using this  
3-7  
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3. OPERATION  
information, the GPS receiver automatically eliminates any malfunctioning  
satellite from the GPS satellite schedule. However, the Almanac sometimes may  
not contain this information. If you hear of an inoperative satellite you can  
disable it manually. Enter satellite number in two digits and press the [ENT] key.  
To restore a satellite, enter “00”.  
3.8  
Output Data  
3.8.1  
Heading  
Heading data is output from the HDG OUT port on the processor unit, in IEC  
61162-1 format. For further details about input/output data ports see page A-7.  
1. Press the [MENU] key to open the menu.  
2. Choose I/O SETUP and press the [ENT]  
OUTPUT DATA SETUP  
key to show the OUTPUT DATA SETUP  
menu.  
HDG OUT ?  
: HDT HDM VTG ZDA  
3. Press the [ENT] key to show the HDG  
OUT display.  
NAV OUT ?  
: VTG GGA ZDA GLL  
NMEA VER : VER 2.0  
LOG PULSE : 200p/nm  
HDG TALKER ID: GP  
HDT: True heading (required for radar,  
AIS, ECDIS, etc.)  
HDM: Magnetic heading  
VTG: Course over ground and ground  
speed  
OUTPUT DATA SETUP menu  
ZDA: Time and date  
HDG OUT  
GGA: Global positioning system (GPS)  
fix data  
ROT: Rate-of-turn data  
VDR: Set and drift  
HDT  
HDM : ON  
VTG  
ZDA  
GGA : OFF  
: ON  
: ON  
: ON  
ROT  
VDR  
: OFF  
: OFF  
4. Choose item desired and press the [ENT]  
key.  
5. Choose ON or OFF as appropriate and  
press the [ENT] key.  
HDG OUT display  
6. Press the [DISP] key to close the menu.  
Note 1: Some boaters may want magnetic heading when the boat is fitted with  
only a magnetic compass without correction of deviation and variation.  
HDM is obtained in this equipment by adding the magnetic variation to  
HDT automatically.  
Note 2: VBW and VHW sentences must be input at the HDG IN port to output  
the VDR sentence.  
3-8  
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3. OPERATION  
3.8.2  
Navigation data  
Choose the data to output from the NAV OUT port as follows:  
1. Press the [MENU] key.  
2. Choose I/O SETUP and press the [ENT] key.  
3. Choose “NAV OUT?” and press the [ENT] key.  
NAV OUT  
VTG : ON  
GGA : ON  
ZDA : ON  
ATT : OFF  
GLL : ON  
ROT : OFF  
NAV OUT menu  
VTG: Course over ground and ground speed  
GGA: Global positioning system (GPS) fix data  
ZDA: Time and date  
ATT: True heading, pitching, rolling  
GLL: Geographic position (latitude and longitude)  
ROT: Rate-of-turn data  
4. Choose item desired and press the [ENT] key.  
OFF  
ON  
5. Choose ON or OFF as appropriate and press the [ENT] key.  
6. Press the [DISP] key to close the menu.  
3.8.3  
Interface  
Normally choose IEC for supplying heading information to AIS and radars. If you  
are unsure of the version your equipment uses, try all three and choose the one  
which successfully outputs data.  
1. Press the [MENU] key to open the menu.  
2. Choose I/O SETUP and press the [ENT] key.  
3. Choose NMEA VER and press the [ENT] key.  
VER1.5  
VER2.0  
IEC  
Format selection window  
4. Choose VER 1.5 or VER 2.0 as appropriate and press the [ENT] key.  
3-9  
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3. OPERATION  
3.8.4  
Log pulse  
This equipment provides SOG (speed over ground) in high accuracy. It converts  
an SOG value to a closure signal and outputs at the rate of 200 or 400  
pulses/nm.  
1. Press the [MENU] key.  
2. Choose I/O SETUP and press the [ENT] key.  
3. Choose LOG PULSE and press the [ENT] key.  
200p/nm  
400p/nm  
Log pulse rate selection window  
4. Choose 200 p/nm or 400 p/nm as appropriate and press the [ENT] key.  
5. Press the [DISP] key to close the menu.  
3.8.5  
Talker identifier mnemonics  
Choose the heading talker ID for the output data sentence HDT and HDM as  
follows:  
1. Press the [MENU] key.  
2. Choose I/O SETUP and press the [ENT] key.  
3. Choose HDG TALKER and press the [ENT] key.  
GP  
HE  
HN  
HC  
Heading talker selection window  
4. Choose GP, HE, HN or HC as appropriate and press the [ENT] key. Choose  
GP normally. If an external gyrocompass is to be used, choose HC.  
GP: GPS Navigator  
HE: North-seeking gyrocompass  
HN: Non-north seeking gyrocompass  
HC: Gyrocompass  
5. Press the [DISP] key to close the menu.  
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3. OPERATION  
3.9  
System Setup  
3.9.1  
Geodetic data  
Your unit is preprogrammed to recognize most of the major chart systems of the  
world. Although the WGS-84 system (default setting) is the GPS standard, other  
categories of charts in other datum still exist. Match the GPS datum with the  
chart system.  
1. Press the [MENU] key to open the menu.  
2. Choose SYS SETUP and press the [ENT] key.  
SYSTEM SETUP  
DATUM  
UNITS  
TIME DIFF  
TIME DISP  
TEST?  
DEMO  
EXCHANGE BATTERY?  
: WGS84  
: kt  
: +00:00  
: 24 HOUR  
: OFF  
SYSTEM SETUP menu  
3. Confirm that the cursor is selecting DATUM and press the [ENT] key.  
4. Choose WGS84 (GPS standard), WGS72 or OTHER according to the  
nautical chart you use and press the [ENT] key.  
5. If you chose WGS72 or WGS84, press the [DISP] key to finish. For OTHER,  
go to step 6.  
6 Press the [ENT] key.  
7. Use the Omnipad to enter chart number, referring to the geodetic chart list on  
page A-2. Choose location with or ; change value with or .  
8. Press the [ENT] key.  
9. Press the [DISP] key to close the menu.  
3-11  
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3. OPERATION  
3.9.2  
Units of measurement  
Distance/speed can be displayed in nautical miles/knots, kilometers/kilometers  
per hour, or miles/miles per hour.  
1. Press the [MENU] key to open the menu.  
2. Choose SYS SETUP and press the [ENT] key.  
3. Choose UNITS.  
4. Press the [ENT] key.  
5. Choose unit of measurement combination desired; kt, km/h, mi/h.  
6. Press the [ENT] key.  
7. Press the [DISP] key to close the menu.  
3.9.3  
Using local time  
GPS uses UTC time. If you would rather use local time, enter the time difference  
(range: -13:30 to +13:30) between local time and UTC.  
1. Press the [MENU] key to open the menu.  
2. Choose SYS SETUP and press the [ENT] key.  
3. Choose TIME DIFF and press the [ENT] key.  
4. Press or to display + or – as appropriate.  
5. Enter time difference with the Omnipad. Choose digit with or ; change  
value with or .  
6. Press the [ENT] key.  
7. Press the [DISP] key to close the menu.  
3.9.4  
Time format  
Time can be displayed in 12 hour or 24 hour format.  
1. Press the [MENU] key to open the menu.  
2. Choose SYS SETUP and press the [ENT] key.  
3. Choose TIME DISP and press the [ENT] key.  
4. Choose 12HOUR or 24HOUR as appropriate and press the [ENT] key.  
5. Press the [DISP] key to close the menu.  
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3. OPERATION  
3.9.5  
Demonstration mode  
The demonstration mode provides simulated operation of the equipment.  
1. Press the [MENU] key to open the menu.  
2. Choose SYS SETUP and press the [ENT] key.  
3. Choose DEMO and press the [ENT] key.  
4. Choose ON or OFF as appropriate and press the [ENT] key.  
5. Press the [DISP] key to close the menu.  
The indication SIM appears at the top of the screen when the demonstration  
mode is active. When the demonstration mode is first made active,  
SIMULATION MODE appears when the power is turned on and it is erased  
when any key is pressed.  
3.10 DGPS Setup  
The internal type DGPS receiver is set at the factory for automatic reception. If  
you want to set it manually or are using an external beacon receiver, follow the  
procedure below. Note that DGPS increases position accuracy fix but it does not  
affect heading accuracy.  
3.10.1 Manual DGPS setup  
1. Press the [MENU] key to open the menu.  
2. Choose DGPS and press the [ENT] key.  
DGPS  
BEACON  
STATION  
RATE  
FREQ  
STATION  
DGPS DATA  
:
:
INT  
AUTO  
: 000 BPS  
: 000.0 kHz  
= - - -  
= - - -  
See Note  
SIG. S: 55.2 dB SNR: 22.0 dB  
DGPS menu  
DGPS Data  
STATION: Shows GOOD or NG.  
DGPS DATA: Shows GOOD or NG.  
SIG. S = Signal Strength. A figure between 0 and 99 is shown.  
The higher the figure the stronger the beacon signal.  
SNR = Signal to Noise Ratio. A figure between 1 and 22 is shown.  
When your boat is in the service area of a beacon station, SNR  
should be 21 or 22. If the figure is below 18 the position will be  
inaccurate. If this happens, check for radar interference, poor  
ground and generator noise on own ship.  
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3. OPERATION  
3. The cursor is on the BEACON field. Press the [ENT] key.  
OFF  
INT  
EXT  
Beacon receiver selection window  
4. Choose appropriate option and press the [ENT] key.  
INT: For internal DGPS beacon receiver.  
EXT: For external DGPS beacon receiver  
OFF: Disables DGPS function. When OFF is selected it takes about one  
minute to find GPS position.  
Note: When connecting a FURUNO external DGPS beacon receiver (such  
as the GR-80) to the SC-120, turn the GR-80’s remote function on to  
set up the beacon receiver with commands from the SC-120. Also set  
the external DGPS beacon receiver as follows: Byte Format, 8-6; First  
Bit, LSB; Parity Bit, None; Stop Bit, 1; Bit Rate, 8.  
5. Press the [ENT] key.  
6. Choose DGPS beacon station selection method: AUTO, MANUAL or LIST.  
AUTO:  
Automatically searches for best DGPS beacon station.  
MANUAL: Manually enter DGPS beacon station specifications in the RATE  
and FREQ fields, referring to a DGPS beacon station list.  
LIST:  
Lists five of the closest DGPS beacon stations, including  
user-programmed stations.  
7. Press the [ENT] key. If you selected AUTO, no further operation is required;  
press the [DISP] key to close the menu. For MANUAL or LIST follow the  
appropriate procedure below.  
MANUAL  
a)The cursor is now on the RATE field. Press the [ENT] key.  
b)Choose the data rate of the DGPS beacon station to be used, among 50, 100  
or 200 bps. Press the [ENT] key.  
c) The cursor is now on the FREQ field. Press the [ENT] key.  
d)Enter the transmission frequency of the DGPS beacon station to be used and  
press the [ENT] key.  
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3. OPERATION  
LIST  
a)The following display appears after pressing the [ENT] key at step 7.  
STATION (NEAREST)  
[EXIT]  
310.0  
287.0  
292.0  
321.0  
302.0  
[USER]  
29.1 nm  
56.7 nm  
160 nm  
234 nm  
426 nm  
92  
134  
320  
134  
121 *  
* = User-registered station  
Beacon station  
frequency  
Range and bearing from own  
ship to beacon station  
(Reference only)  
Beacon station display  
b)Choose desired station with the Omnipad.  
c)Press the [ENT] key.  
8. Press the [DISP] key to close the menu.  
3.10.2 Programming user beacon stations  
The user may program 20 DGPS beacon stations from which to use in selection  
of DGPS beacon station. Whenever a new station comes into operation, you can  
add it to the list.  
1. Press the [MENU] key to open the menu.  
2. Choose DGPS and press the [ENT] key.  
3. Choose STATION and press the [ENT] key.  
4. Choose LIST and press the [ENT] key.  
5. Choose USER and press the [ENT] key to show the STATION (USER)  
display.  
STATION (USER)  
[EXIT] [NEW?] [CLR?]  
01  
02  
03  
04  
05  
06  
STATION (USER) display  
6. Choose “NEW?” and press the [ENT] key.  
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3. OPERATION  
NEW USER CHANNEL  
FREQ  
RATE  
LAT  
:
310.0kHz  
: 200BPS  
: 37 59N  
: 133 00E  
˚
LON  
˚
EXIT? SAVE?  
NEW USER CHANNEL display  
Note: For steps 7-10 use the Omnipad to enter data. Choose location with  
or ; change value with or .  
7. Press the [ENT] key, enter frequency of the station, and press the [ENT] key.  
8. Press the [ENT] key, enter baud rate of the station, and press the [ENT] key.  
9. Press the [ENT] key, enter latitude of the station, and press the [ENT] key.  
10.Press the [ENT] key, enter longitude of the station, and press the [ENT] key.  
11. Choose “SAVE?” and press the [ENT] key.  
12.Press the [DISP] key to close the menu.  
3.10.3 Editing user beacon stations  
1. Press the [MENU] key to open the menu.  
2. Choose DGPS and press the [ENT] key.  
3. Choose STATION and press the [ENT] key.  
4. Choose LIST and press the [ENT] key.  
5. Choose USER and press the [ENT] key.  
6. Choose a station from the list and press the [ENT] key. The display looks  
something like the one below.  
FREQ  
RATE  
LAT  
:
310.0kHz  
: 200BPS  
: 37 59N  
: 133 00E  
˚
LON  
˚
EXIT SAVE? ERASE?  
Display for editing user channels  
7. Choose item, press the [ENT] key, edit data, and press the [ENT] key.  
8. Choose “SAVE?” and press the [ENT] key.  
9. Press the [MENU] key twice to finish.  
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3. OPERATION  
3.10.4 Erasing individual user stations  
1. Press the [MENU] key to open the menu.  
2. Choose DGPS and press the [ENT] key.  
3. Choose STATION and press the [ENT] key.  
4. Choose LIST and press the [ENT] key.  
5. Choose USER and press the [ENT] key.  
6. Choose a channel from the list and press the [ENT] key.  
7. Choose “ERASE?”.  
8. Press the [ENT] key to erase channel selected.  
3.10.5 Erasing all user beacon stations  
1. Press the [MENU] key to open the menu.  
2. Choose DGPS and press the [ENT] key.  
3. Choose STATION and press the [ENT] key.  
4. Choose LIST and press the [ENT] key.  
5. Choose USER and press the [ENT] key.  
6. Choose CLR? and press the [ENT] key. You are asked if it is all right to erase  
all user channels.  
ERASE ALL?  
ARE YOU SURE?  
YES NO  
Prompt for erasure of all user channels  
7. Choose YES and press the [ENT] key to erase all user channels.  
3-17  
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3. OPERATION  
3.11 OTHERS Menu  
The OTHERS menu chooses whether to output last-used heading data, and  
smooths rate of turn (rate-of-turn meter required).  
1. Press the [MENU] key to display the main menu.  
MAIN MENU  
SATELLITE  
DGPS  
I/O SETUP  
INST MENU  
ERASE  
ALARMS  
MESSAGES  
GPS SETUP  
SYS SETUP  
SOFT VER.  
OTHERS  
TRIP MENU  
Main menu  
3. Choose OTHERS and press the [ENT] key.  
OTHERS  
HOLD HDG DATA: OFF  
SMOOTH ROT : 2.5SEC  
ROT RANGE  
:
60 /min  
Others menu  
4. Choose HOLD HDG DATA and press the [ENT] key.  
5. Choose ON to use, at power on, last-used heading until current heading is  
calculated. Last-used heading flashes to inform that it is unreliable.  
6. Press the [ENT] key.  
7. Choose SMOOTH ROT and press the [ENT] key.  
8. Use the Omnipad to enter smoothing time. Choose location with or ;  
change value with or .  
9. Press the [ENT] key.  
10.Choose ROT RANGE and press the [ENT] key.  
11.Choose the range of the ROT graph: 30, 60 or 90 and press the [ENT] key.  
12.Press the [DISP] key to close the menu.  
3-18  
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3. OPERATION  
3.12 TRIP Menu  
The TRIP menu chooses the indication to show on the Speed display, distance  
source; resets distance run (see para. 3.13) and smooths the tide drift indication.  
1. Press the [MENU] key to display the main menu.  
2. Choose TRIP MENU and press the [ENT] key.  
TRIP MENU  
DISTANCE DISP : DSTNC  
DISTANCE CALC: GPS  
RESET DISTANCE?  
DRIFT AVG : 10SEC  
TRIP menu  
1. Choose DISTANCE DISP and press the [ENT] key.  
2. Choose what to display on the Speed display; distance run (DSTNC) or tide  
direction and speed (DRIFT). Press the [ENT] key.  
3. Choose DISTANCE CALC and press the [ENT] key.  
4. Choose the source for distance run; GPS, VLW (distance traveled through  
water) or VBW (Dual ground/water speed). (VLW requires DS-80 type  
Doppler speed log and VBW requires Current indicator or Doppler speed  
log.) Press the [ENT] key.  
5. Choose DRIFT AVG. and press the [ENT] key.  
6. If tide current and speed data is unstable, enter a smoothing figure to  
stabilize the data. The higher the figure the more smoothed the data. A  
setting between 0 (no smoothing) and 9999 is available.  
7. Press the [ENT] key.  
8. Press the [DISP] key to close the menu.  
3.13 Resetting Distance Run  
The distance run may be reset to zero as below when the source of distance run  
is GPS or VBW.  
1. Press the [MENU] key to display the main menu.  
2. Choose TRIP MENU and press the [ENT] key.  
3. Choose RESET DISTANCE and press the [ENT] key.  
RESET DISTANCE?  
ARE YOU SURE?  
YES NO  
RESET DISTANCE prompt  
4. Choose YES and press the [ENT] key.  
5. Press the [DISP] key to close the menu.  
3-19  
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4 MAINTENANCE,  
TROUBLESHOOTING  
WARNING  
WARNING  
ELECTRICAL SHOCK HAZARD  
Do not open the equipment.  
Only qualified personnel  
should work inside the  
equipment.  
4.1  
Preventive Maintenance  
Regular maintenance is important for good performance. A maintenance  
program should be established and should include the following points.  
Check connectors and ground terminal on the processor unit and display unit  
for tightness.  
Check ground terminal for rust. Clean or replace as necessary.  
Check for water leakage in the antenna cable. Replace if necessary.  
Remove dust and dirt from the display unit (including LCD) and processor unit  
with a dry, soft cloth. Wipe the LCD softly to prevent scratching. Do not use  
chemical cleaners for cleaning - they can remove paint and markings.  
4-1  
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4. MAINTENANCE, TROUBLESHOOTING  
4.2  
Troubleshooting  
This section provides basic troubleshooting procedures which the user may  
follow to restore normal operation.  
Troubleshooting  
Symptom  
Cause  
Remedy  
Cannot turn on the power. Power connector on the  
processor unit  
Firmly connect the power  
connector.  
Power supply failure  
Blown fuse  
Check the power supply.  
Check the fuse.  
Heading indication  
changes randomly when  
ship is at anchor or does  
not change when ship  
moves.  
Sensor trouble  
Run the diagnostic test2 to  
determine the cause.  
Heading output from  
SC-120 does not appear  
on external equipment.  
Connection between  
SC-120 and external  
equipment has loosened  
Firmly fasten the  
connector.  
Sensor trouble  
Run the diagnostic test1 to  
determine the cause.  
If large hading error occurs or heading indication is frequently interrupted,  
contact your dealer for advice.  
4.3  
Diagnostics  
Diagnostic test1  
The diagnostic test checks the equipment for proper operation.  
Note: Heading is not output during the diagnostic test, and this is communicated  
with an appropriate message. After completing the diagnostic test, turn the  
power off and on to update heading data.  
1. Press the [MENU] key to open the menu.  
2. Choose SYS SETUP and press the [ENT] key.  
3. Choose TEST? and press the [ENT] key.  
TEST1  
TEST2  
Test menu options  
4. Confirm that TEST1 is selected and press the [ENT] key.  
TEST START?  
(STOP: PWR OFF)  
ARE YOU SURE?  
YES  
NO  
Test start prompt  
4-2  
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4. MAINTENANCE, TROUBLESHOOTING  
5. Press to choose YES and press the [ENT] key. The test proceeds in the  
sequence shown below.  
OK shown for normal;  
NG (No Good) shown for error  
ROM RAM BAT  
GPS1  
GPS2  
GPS3  
CAL  
DISP  
DGPS  
OK  
OK  
OK  
OK  
OK  
OK  
OK  
OK  
OK  
OK  
OK  
OK  
PUSH KEY  
GPS receiver  
KEY TEST  
Press each key one by  
one. Pressed keys name  
appears here if key  
is functioning properly.  
OK  
OK  
Processor unit  
Display unit  
Internal beacon receiver  
CNT=  
(STOP: PWR OFF)  
ROM, RAM, KEY TEST  
Number of times test executed  
After 3 sec.  
HDG OUT1 connector  
HDG OUT4 connector  
NAV OUT1connector  
NAV OUT2 connector  
BEACON EXT connector  
DISPLAY connector  
HDG - -  
HDG4 - -  
NAV1 - -  
NAV2 - -  
B-EXT - -  
DSP OK  
To stop the test turn  
off the power.  
Factory use  
CNT= (STOP: PWR OFF)  
I/O TEST  
After 3 sec.  
<LCD CHECK>  
ALL ON 2 SEC.  
ALL OFF 3 SEC.  
DISPLAY TEST  
All LCD segments go on 2 sec.,  
All LCD segments go off 3 sec.  
SOFTWARE VERSION  
** = Program version no.  
*** = No. of times test conducted  
consecutively.  
DISPLAY  
205-1312-0**  
205-1131-0**  
205-1313-0**  
205-1313-0**  
205-1313-0**  
085-0182-0**  
PROCESS  
GPS1  
GPS2  
GPS3  
DGPS  
CNT=***  
(STOP: PWR OFF)  
PROGRAM VERSION  
DISPLAY  
ROM, RAM, KEY check appears after  
3 sec.  
Diagnostic test sequence  
6. Turn off the processor unit to quit the diagnostic test1.  
4-3  
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4. MAINTENANCE, TROUBLESHOOTING  
Diagnostic test2  
If the heading indication changes randomly when ship is at anchor or does not  
change when the ship moves, run the test2 following the procedure below, with  
the ship at anchor and satellite signal received.  
Note: Heading is not output during the diagnostic test, and this is communicated  
with an appropriate message. After completing the diagnostic test, turn  
the power off and on to update heading data.  
1. Press the [MENU] key to open the menu.  
2. Choose SYS SETUP and press the [ENT] key.  
3. Choose TEST? and press the [ENT] key.  
TEST1  
TEST2  
Test menu options  
4. Choose TEST2 and press the [ENT] key.  
TEST START?  
(STOP: PWR OFF)  
ARE YOU SURE?  
YES  
NO  
Test start prompt  
5. Press to choose YES and press the [ENT] key.  
6. Press the [ENT] key twice. Rate and angle values are 0.0°. If the values  
increase or decrease markedly (with ship at anchor), suspect rate sensor  
trouble. Contact your dealer to request service.  
TEST2  
YAN  
ROL  
PIT  
RATE  
ANGLE  
0.0  
0.0  
0.0  
0.0  
0.0  
0.0  
<STOP: PWR OFF>  
TEST2 display  
7. Turn off the processor unit to quit the diagnostic test2.  
4-4  
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4. MAINTENANCE, TROUBLESHOOTING  
4.4  
Program Number  
You may display the program number as follows:  
1. Press the [MENU] key to open the menu.  
2. Choose SOFT VER. and press the [ENT] key.  
SOFTWARE VERSION  
DISPLAY  
PROCESS  
GPS1  
GPS2  
GPS3  
205-1312-0**  
205-1311-0**  
205-1313-0**  
205-1313-0**  
205-1313-0**  
085-0182-0**  
DGPS*  
* = Blank if no DGPS receiver is connected.  
** = Program version no.  
Program version no. display  
3. Press the [DISP] key to close the program version no. display.  
4.5  
Clearing Data  
You may clear GPS data and system data all at once or individually as follows:  
1. Press the [MENU] key to open the menu.  
2. Choose ERASE and press the [ENT] key.  
3. Choose GPS DATA, SYSTEM DATA or ALL BACKUP DATA (clears GPS and  
SYSTEM data) as appropriate. One of the following displays appears  
depending on your selection.  
Prompts for erasure of data  
4. Press to choose YES and press the [ENT] key to erase. After data is  
erased the message “Completed erasing. Turn off the unit.” Is displayed.  
Note: MOUNTING, DIRECTION and LANGUAGE in the INST menu, HDG  
RESTORATION and HDG BACKUP in the ALARMS menu, STATION  
in the DPGS menu and OFFSET in the HEADING SETUP menu are  
not cleared.  
5. Turn off and on the power.  
4-5  
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4. MAINTENANCE, TROUBLESHOOTING  
4.6  
Replacement of Battery  
The display unit and processor unit have a battery which stores data when the  
power is turned off. When the battery voltage is low the message “BATTERY!”  
appears on the display. Open the message display, by pressing the [MENU] key  
and choosing “MESSAGES”, to find out which battery’s voltage is low. Have a  
qualified technician replace the battery, following the procedure below. The life of  
the batteries is 3-5 years.  
Battery Location  
Display Unit  
Type  
Code No.  
000-139-951  
000-133-495  
TZ6580553A  
CR2450-F2ST2  
Processor Unit  
1. Press the [MENU] key to open the menu.  
2. Choose SYS SETUP and press the [ENT] key.  
3. Choose EXCHANGE BATTERY? And press the [ENT] key.  
DISPLAY UNIT  
PROCESSOR UNIT  
Battery exchange options  
4. Choose DISPLAY UNIT or PROCESSOR UNIT as appropriate and press the  
[ENT] key.  
EXCHANGE BATT?  
(DISPLAY UNIT)*  
ARE YOU SURE?  
YES NO  
* Or processor unit  
Prompt for exchanging battery  
5. Press to choose YES and press the [ENT] key. The following message  
appears.  
READY FOR  
BATTERY CHANGE.  
TURN OFF THE  
UNIT.  
Prompt for turning off the power  
6. At this time the contents of the RAM are temporarily moved to the flash  
memory. Turn off the power.  
7. Have a qualified technician replace the battery.  
4-6  
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4. MAINTENANCE, TROUBLESHOOTING  
4.7  
Replacement of Fuse  
The 3 A fuse on the POWER Board inside the processor unit protects the  
equipment from overcurrent and reverse polarity of the power supply. If the fuse  
blows, have a qualified technician check the set and replace the fuse.  
CAUTION  
Use the proper fuse.  
Use of a wrong fuse can cause fire or  
damage to the equipment.  
4.8  
Error Messages  
The alarm sounds for equipment error and is accompanied by a flashing  
exclamation mark ( ). Press any key to silence the alarm. The exclamation  
mark remains on the screen until the cause for error is eliminated. Find the  
cause for the alarm(s) as follows:  
1. Press the [MENU] key to open the menu.  
2. Choose MESSAGES and press the [ENT] key.  
MESSAGES  
GPS DATA ERROR!  
Message display  
3. Press the [DISP] key to close the menu.  
Error messages  
Error Message  
Meaning  
Remedy  
ABORTING!  
GPS heading error continues for  
one minute. For example, satellite  
cannot be acquired because of  
unfavorable environment.  
Check for obstruction.  
ABORTING CALC!  
GPS signal interrupted for one  
minute  
Press any key to try to restore  
normal operation.  
BACKUP ERROR!(DISP) Corrupted backup data found in  
display unit at power on.  
Default settings are  
automatically restored.  
BACKUP  
ERROR!(PRCSSR)  
Corrupted backup data found at  
processor unit at power on.  
Default settings are  
automatically restored.  
(Continued on next page)  
4-7  
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4. MAINTENANCE, TROUBLESHOOTING  
Error messages (con’t from previous page)  
Meaning  
Voltage of battery in display unit or Open the Message Display to  
Error Message  
BATTTERY!  
Remedy  
processor unit may be low.  
see which battery’s voltage is  
low. Have a qualified technician  
replace the battery.  
BATTERY ALM!(DISP)  
Voltage of battery in display unit is Have battery replaced at  
low.  
earliest convenience.  
BATTERY  
ALM!(PRCSSR)  
Voltage of battery in processor  
unit is low.  
Have battery replaced at  
earliest convenience.  
DATA ERR!  
GPS data (from the GPS receiver Check navigator.  
in the processor unit) is lost for  
one minute. Heading output is  
stopped and the heading  
indication shows “- - -“.  
DGPS ERROR!  
DGPS data (from the DGPS  
receiver in the processor unit) is  
lost for one minute.  
Ship may not be within DPGS  
service area.  
GPS DATA ERROR!  
GPS data (from the GPS receiver Conduct diagnostic test and  
in the processor unit) is lost for  
one minute. Heading output is  
stopped and the heading  
indication shows “- - -“.  
check if NG appears for results  
for GPS receivers GPS1, GPS2  
and GPS3.  
GPS NO FIX!  
No GPS data.  
Check antenna cable.  
Request service  
HDG ERROR!  
Heading error  
NO HEADING OUTPUT!  
GPS heading error continues for  
Press any key to try to restore  
five minutes. In this case heading normal operation.  
output is stopped and the heading  
indication shows “- - -“.  
RAM ERROR!  
RATE ERROR!  
ROM ERROR!  
RAM problem  
Request service.  
Request service.  
Request service.  
Data output stopped.  
ROM problem  
4-8  
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APPENDIX  
Menu Tree  
BUZZER (SHORT, LONG, CONSTANT)  
DGPS (OFF, ON)  
ALARMS  
MENU  
HDG RESTORATION (MAN, AUTO)  
HDG BACKUP (1-5 (MIN), 5)  
SATELLITE  
MESSAGES  
BEACON (OFF, INT*, EXT)  
STATION (AUTO, MANUAL, LIST)  
RATE** (50BPS, 100BPS, 200BPS)  
DGPS  
FREQ**  
*: INT is default for model with interal beacon receiver.  
**: Available when STATION is set to MANUAL.  
SMOOTH POS (0 SEC)  
SMOOTH S/C (5 SEC)  
LAT OFFSET (0.000’N)  
LON OFFSET (0.000’E)  
DISABLE SV  
GPS SETUP  
HDG OUT? (HDT, HDM, VTG, ZDA, GGA, ROT, VDR)  
NAV OUT? (VTG, GGA, ZDA, ATT, GLL, ROT)  
NMEA VER (VER1.5, VER2.0, IEC)  
I/O SETUP  
LOG PULSE (200p/nm, 400p/nm)  
HDG TALKER ID (GP, HE, HN, HC)  
DATUM (WGS84, WGS72, OTHER 001 (WGS84))  
UNITS (kt, km/h, mi/h)  
SYS SETUP  
TIME DIFF (+00:00)  
TIME DISP (12 HOUR, 24 HOUR)  
TEST? (TEST1, TEST2)  
DEMO (OFF, ON)  
EXCHANGE BATTERY? (DISPLAY UNIT, PROCESSOR UNIT)  
MOUNTING (FLOOR, WALL, INVERT)  
DIRECTION (A, B, C, D)  
INST MENU  
LANGUAGE (ENG, JPN)  
SOFT VER.  
ERASE  
Default settings in bold italics  
GPS DATA?  
SYSTEM DATA?  
ALL BACKUP DATA?  
HOLD HDG DATA (OFF, ON)  
OTHERS  
SMOOTH ROT (0.1 - 30.0, 2.5 (sec))  
ROT RANGE (30, 60, 90 ( /min))  
TRIP  
MENU  
DISTANCE DISP (DSTNC, DRIFT)  
DISTANCE CALC (GPS, VLW, VBW )  
RESET DISTANCE?  
DRIFT AVG. (0-9999SEC, 10)  
A-1  
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APPENDIX  
Geodetic Chart Codes  
001: WGS84  
002: WGS72  
003: TOKYO  
090:  
091:  
092:  
093:  
094:  
095:  
096:  
097:  
: Alaska  
:
Bahamas (excl. San Salvador Is.)  
: Bahamas, San Salvador Is.  
: Canada (incl. Newfoundland Is.)  
: Alberta & British Columbia  
: East Canada  
: Manitoba & Ontario  
: Northwest Territories &  
Saskatchewan  
: Yukon  
: Canal Zone  
: Caribbean  
: Central America  
: Cuba  
: Greenland  
: Mean Value (Japan, Korea &  
Okinawa)  
: Mean Value (CONUS)  
: Mean Value  
: Australia & Tasmania  
: Mean Value (Ethiopia & Sudan)  
: Ethiopia  
: Mali  
: Senegal  
: Sudan  
: Somalia  
004: NORTH AMERICAN 1927  
005: EUROPEAN 1950  
006: AUSTRALIAN GEODETIC 1984  
007: ADINDAN  
008:  
009:  
010:  
011  
098:  
099:  
100:  
101:  
102:  
103:  
104:  
012: AFG  
013: AIN EL ABD 1970  
014: ANNA 1 ASTRO 1965  
015: ARC 1950  
: Bahrain Is.  
: Cocos Is.  
: Mean Value  
: Mexico  
016:  
017:  
: Botswana  
: Lesotho  
105: NORTH AMERICAN 1983  
106:  
: Alaska  
: Canada  
018:  
019:  
020:  
021:  
: Malawi  
: Swaziland  
: Zaire  
: Zambia  
107:  
108:  
: CONUS  
: Mexico, Central America  
: Corvo & Flores Islands (Azores)  
: Egypt  
109: OBSERVATORIO 1966  
110: OLD EGYPTIAN 1930  
022:  
023: ARC 1960  
024:  
: Zimbabwe  
: Mean Value (Kenya & Tanzania)  
: Kenya  
111: OLD HAWAIIAN  
112:  
113:  
: Mean Value  
: Hawaii  
: Kauai  
025:  
: Tanzania  
: Ascension Is.  
: Iwo Jima Is.  
: Tern Is.  
: St. Helena Is.  
: Marcus Is.  
: Australia & Tasmania  
: Efate & Erromango Islands  
: Bermuda Islands  
: Columbia  
: Argentina  
: Phoenix Islands  
: South Africa  
114:  
115:  
116: OMAN  
: Maui  
: Oahu  
: Oman  
026: ASCENSION IS. 1958  
027: ASTRO BEACON ÒEÓ  
028: ASTRO B4 SOR. ATOLL  
029: ASTRO POS 71/4  
030: ASTRONOMIC STATION 1952  
031: AUSTRALIAN GEODETIC 1966  
032: BELLEVUE (IGN)  
033: BERMUDA 1957  
034: BOGOTA OBSERVATORY  
035: GAUPO INCHAUSPE  
036: CANTON IS. 1966  
037: CAPE  
117: ORDNANCE SURVEY OF GREAT BRITAIN 1936: Mean Value  
118:  
119:  
120:  
: England  
: England, Isle of Man & Wales  
: Scotland, & Shetland Islands  
: Wales  
: Canary Islands  
: Pitcairn Is.  
121:  
122: PICO DE LAS NIVIES  
123: PITCAIRN ASTRO 1967  
124: PROVISIONS SOUTH CHILEAN 1963: South Chile (near 53û S)  
125: PROVISIONAL SOUTH AMERICAN 1956: Mean Value  
126:  
: Bolivia  
038: CAPE CANAVERAL  
: Mean Value (Florida & Bahama  
Islands)  
127:  
128:  
: Chile-Northern Chile (near 19ûS)  
: Chile-Southern Chile (near  
039: CARTHAGE  
040: CHATHAM 1971  
041: CHUA ASTRO  
042: CORREGO ALEGRE  
043: DJAKARTA (BATAVIA)  
044: DOS 1968  
045: EASTER IS. 1967  
046: EUROPEAN 1950 (Cont’d)  
047:  
: Tunisia  
: Chatham Is. (New Zealand)  
: Paraguay  
43ûS)  
129:  
130:  
131:  
132:  
133:  
: Columbia  
: Ecuador  
: Guyana  
: Peru  
: Venezuela  
: Puerto Rico & Virgin Islands  
: Qatar  
: South Greenland  
: Sardinia Islands  
: Sao Maguel, Santa Maria  
Islands (Azores)  
: Espirito Santo Is.  
: East Falkland Is.  
: Mean Value  
: Brazil  
: Sumatra Is. (Indonesia)  
: Gizo Is. (New Georgia Is.)  
: Easter Is.  
: Western Europe  
: Cyprus  
134: PUERTO RICO  
135: QATAR NATIONAL  
136: QORNOQ  
137: ROME 1940  
138: SANTA BRAZ  
048:  
049:  
: Egypt  
: England, Scotland, Channel &  
Shetland Islands  
: England, Ireland, Scotland, &  
Shetland Islands  
: Greece  
050:  
139: SANTO (DOS)  
140: SAPPER HILL 1943  
141: SOUTH AMERICAN 1969  
051:  
052  
053:  
054:  
: Iran  
: Italy, Sardinia  
: Italy, Sicily  
142:  
143:  
144:  
: Argentina  
: Bolivia  
: Brazil  
055:  
056:  
: Norway & Finland  
: Portugal & Spain  
: Mean Value  
: Republic of Maldives  
: New Zealand  
: Guam Is.  
: Guadalcanal Is.  
: Iceland  
: Hong Kong  
: Thailand & Vietnam  
: Bangladesh, India & Nepal  
: Ireland  
: Diego Garcia  
: Johnston Is.  
145:  
146:  
147:  
148:  
149:  
150:  
151:  
152:  
: Chile  
: Columbia  
: Ecuador  
: Guyana  
: Paraguay  
: Peru  
: Trinidad & Tobago  
: Venezuela  
: Singapore  
: Porto Santo & Madeira Islands  
: Faial, Graciosa, Pico, Sao  
Jorge, & Terceira Is.  
: Brunei & East Malaysia  
(Sarawak & Sadah)  
: Japan  
057: EUROPEAN 1979  
058: GANDAJIKA BASE  
059: GEODETIC DATUM 1949  
060: GUAM 1963  
061: GUX 1 ASTRO  
062: HJORSEY 1955  
063: HONG KONG 1363  
064: INDIAN  
153: SOUTH ASIA  
154: SOUTHEAST BASE  
155: SOUTHWEST BASE  
065:  
066: IRELAND 1965  
067: ISTS 073 ASTRO 1969  
068: JOHNSTON IS. 1961  
069: KANDAWALA  
070: KERGUELEN IS.  
071: KERTAU 1948  
072: LA REUNION  
073: L. C. 5 ASTRO  
074: LIBERIA 1964  
075: LUZON  
156: TIMBALAI 1948  
: Sri Lanka  
157: TOKYO  
158:  
159:  
160: TRISTAN ASTRO 1968  
161: VITI LEVU 1916  
162: WAKE-ENIWETOK 1960  
163: ZANDERIJ  
164: BUKIT RIMPAH  
: Kerguelen Is.  
: West Malaysia & Singapore  
: Mascarene Is.  
: Cayman Brac Is.  
: Liberia  
: Philippines (excl. Mindanao Is.)  
: Mindanao Is.  
: Korea  
: Okinawa  
: Tristan da Cunha  
: Viti Levu Is. (Fiji Islands)  
: Marshall Islands  
: Surinam  
: Bangka & Belitung Islands  
(Indonesia)  
: Camp Mcmurdo Area, Antarctica  
: Kalimantan Is. (Indonesia)  
: Afghanistan  
076:  
077: MAHE 1971  
078: MARCO ASTRO  
079: MASSAWA  
080: MERCHICH  
081: MIDWAY ASTRO 1961  
082: MINNA  
: Mahe Is.  
: Salvage Islands  
: Eritrea (Ethiopia)  
: Morocco  
: Midway Is.  
: Nigeria  
165: CAMP AREA ASTRO  
166: G. SEGARA  
167: HERAT NORTH  
168: HU-TZU-SHAN  
: Taiwan  
169: TANANARIVE OBSERVATORY 1925 : Madagascar  
083: NAHRWAN  
084:  
085:  
: Masirah Is. (0man)  
: United Arab Emirates  
: Saudi Arabia  
: Namibia  
170: YACARE  
171: RT-90  
172: Pulkovo 1942  
173: FINNISH KKJ  
: Uruguay  
: Sweden  
: Russia  
: Finland  
086: NAMIBIA  
087: MAPARIMA, BWI  
088: NORTH AMERICAN 1927  
089:  
: Trinidad & Tobago  
: Western United States  
: Eastern United States  
A-2  
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APPENDIX  
Digital Interface  
Output sentences of channel 1 (HDG OUT)  
HDT, HDM, ROT, VTG, ZDA, GGA  
(Talker: GP)  
Output sentences of channel 2 (NAV OUT)  
ROT, Gpatt, VTG, ZDA, GGA, GLL  
Transmission interval  
HDG OUT  
HDT, HDM, ROT: 100 ms (two of three are selected.)  
VTG, ZDA, GGA: 1 s  
NAV OUT:  
Gpatt, ROT: 100 ms (two of three are selected.)  
200 ms (other cases)  
VTG, ZDA, GGA, GLL: 1 s  
Load requirements as listener  
Isolation:  
Optocoupler  
Input Impedance: 220 ohms (due to common use of output port, AD-10 and NMEA)  
Max. Voltage: ±15 V  
Threshold:  
4 mA (In case of connection of FURUNO device talker)  
Data transmission  
Data is transmitted in serial asynchronous form in accordance with the standard referenced  
in 2.1 of IEC 61162-1. The first bit is a start bit and is followed by data bits,  
least-significant-bit as illustrated below.  
The following parameters are used:  
Baud rate: 4800  
data bits: 8 (D7 = 0), parity none  
stop bits: 1  
D0 D1 D2 D3 D4 D5 D6 D7  
start  
bit  
stop  
bit  
data bits  
A-3  
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APPENDIX  
Schematic diagrams  
HDG IN port (listener)  
Load requirements  
Isolation: Optocoupler  
Input Impedance: 220 ohm  
Max. voltage: ±15V  
HDG OUT1 port  
Output drive capability  
Max. 10 mA  
A-4  
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APPENDIX  
NAV OUT1 Port  
Output drive capability  
Max. 10 mA  
HDG4 NAV2 port  
RS-232C level  
A-5  
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APPENDIX  
Data sentences  
PFECatt- True heading, pitching, rolling  
$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)  
Checksum (Ver. 2.0)  
Rolling (output to tenths place)  
Pitching (output to tenths place)  
Heading, true (output to tenths place)  
GGA - Global positioning system (GPS) fix data  
Time, position and fix related data for a GPS receiver.  
Differential reference station ID, 0000-1023  
Age of differential GPS data  
Units of geoidal separation, m  
Geoidal separation  
Units of antenna altitude, m  
Antenna altitude above/below  
mean sea level (geoid)  
Horizontal dilution of precision  
$GPGGA, hhmmss.ss. 1111.11, a, yyyyy.yy, a, x, xx, x.x, x.x, M, x.x, M, x.x, xxxx*hh<CR><LF>  
Number of satellites in use, 11-12, may be  
different from the number in view  
GPS quality  
Longitude - E/W  
Latitude - N/S  
UTC of position  
GLL - Geographic position - latitude/longitude  
Latitude and longitude of present vessel position, time of position fix and status.  
$--GPGLL, 1111.11, a, yyyyy.yy, a, hhmmss.ss, A, p*hh<CR><LF>  
Positioning system indicator*  
Status: A = data valid  
UTC of position  
Longitude, E/W  
Latitude, N/S  
*A = Autonomous, D = Differential, E = estimated(dead reckoning), M = Manual input, S = Simulator,  
N = Data not valid. The Mode indicator field supplements the Status field. The Status field shall be  
set to V=invalid for all values of Operating Mode except for A=Autonomous and D=Differential. The  
positioning system Mode indicator and Status field shall not be null fields.  
A-6  
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APPENDIX  
HDM- Heading – magnetic  
This sentence is not used in the current version of NMEA and IEC 61162. Some boaters may want the  
GPS compass to indicate the magnetic heading when the boat is only fitted with a magnetic compass.  
HDG is calculated by adding a geomagnetic variation to HDT.  
$--HDM, x.x, M *hh<CR><LF>  
Heading, degrees true  
HDT - Heading - true  
True heading in degrees obtained by processing RF cycle in the GPS carrier frequency.  
$--HDT, x.x, T*hh<CR><LF>  
Heading, degrees true  
ROT – Rate of turn  
ROT derived from a changing rate of GPS compass heading.  
$--ROT, x.x, A*hh<CR><LF>  
Status: A = data valid  
Rate of turn, degrees/min, “-” = bow turns to port  
VBW - Dual ground/water speed  
$--VBW,x.x,x.x,A,x.x,x.x,A,x.x,A,x.x,A*hh<CR><LF>  
|
|
|
|
|
|
|
|
|
|
|
| |  
| |  
| |  
| |  
| |  
| |  
| |  
| |  
|
|
|
|
|
|
|
|
| | | |  
| | | |  
| | | |  
| | | | +-------- 9  
| | | +----------- 8  
| | +-------------- 7  
| +----------------- 6  
+-------------------- 5  
|
|
|
| |  
| +--- 11  
+----- 10  
| | +------------------------ 4  
| +--------------------------- 3  
+------------------------------ 2  
+---------------------------------- 1  
1. Longitudial water speed, knots  
2. Transverse water speed, knots  
3. Status: water speed, A=data valid V=data invalid  
4. Longitudial ground speed, knots  
5. Transverse ground speed, knots  
6. Status: ground speed, A=data valid V=data invalid  
7. Stern transverse water speed, knots  
8. Status: stern water speed, A=data valid V=data invalid  
9. Stern transverse ground speed, knots  
10. Status: stern ground speed, A=data valid V=data invalid  
11. Checksum  
A-7  
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APPENDIX A  
VDR - Set and drift  
$--VDR,x.x,T,x.x,M,x.x,N*hh<CR><LF>  
| |  
| |  
| |  
|
|
|
|
|
| | |  
| | +--------- 4  
| +--+----------- 3  
| | +--+----------------- 2  
+--+----------------------- 1  
1. Direction, degrees true  
2. Direction, degrees magnetic  
3. Current speed, knots  
4. Checksum  
VHW - Water speed and heading  
The compass heading to which the vessel points and the speed of the vessel relative to the water.  
$--VHW,x.x,T,x.x,M,x.x,N,x.x,K*hh<CR><LF>  
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| | | | |  
| | | | +--------- 5  
| | +--+----------- 4  
| +--+----------------- 3  
| +---+----------------------- 2  
+---+----------------------------- 1  
1. Heading, degrees true  
2. Heading, degrees magnetic  
3. Speed, knots  
4. Speed, km/h  
5. Checksum  
VLW - Distance travelled through the water  
The distance travelled, relative to the water.  
$--VLW,x.x,N,x.x,N*hh<CR><LF>  
|
|
|
| | | |  
| | | +--------- 3  
| +---+----------- 2  
+---+----------------- 1  
1. Total cumulative distance, nautical miles  
2. Distance since reset, nautical miles  
3. Checksum  
A-8  
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APPENDIX A  
VTG - Course over ground and ground speed  
COG and SOG obtained by processing the GPS signals.  
$GPVTG, x.x, T, x.x, M, x.x, N, x.x, K, p*hh<CR><LF>  
Positioning mode indicator*  
Speed, km/h  
Speed, knots  
Course degrees magnetic  
Course degrees true  
*A = Autonomous, D = Differential, E = estimated(dead reckoning), M = Manual input, S = Simulator,  
N = Data not valid. The Mode indicator field supplements the Status field. The Status field shall be  
set to V=invalid for all values of Operating Mode except for A=Autonomous and D=Differential. The  
positioning system Mode indicator and Status field shall not be null fields.  
ZDA - Time and date  
UTC, day, month, year and local time zone.  
$GPZDA. hhmmss.ss, xx, xx, xxxx, xx, xx*hh<CR><LF>  
Local zone minutes description, same sign as local hours  
Local zone description 00 h to ± 13 h (see note)  
Year  
Month, 01 to 12  
Day, 01 to 31  
UTC  
NOTE - Zone description if the number of whole hours added to local time to obtain GMT. Zone  
description is negative for east longitudes.  
A-9  
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APPENDIX  
Input/Output Ports  
Connector  
Type  
MJ6  
Port Label  
I/O  
Signal  
Remarks  
HDG OUT1  
HDG OUT2  
HDG OUT3  
O
O
O
Heading  
Heading  
Heading  
1) IEC 61162 (NMEA 0183) or AD-10 format (hardware)  
2) IEC 61162 (NMEA 0183) Ver.1.5 2.0 (software)  
3) Talker: GP  
MJ6  
MJ6  
4) Speed: 4800 bps  
5) IEC 61162 sentences: HDM, HDT, ROT, VTG,  
ZDA, GGA (VTG, ZDA, and GGA are factory-set to  
OFF.)  
6) IEC 61162 (NMEA 0183) sentence output  
interval: HDM, HDT, ROT: 0.1 sec and others:  
1 sec  
7) AD-10 output interval: 25 ms  
8) Signal level: IEC 61162  
Heading data selected in the HDG SETUP menu is  
output.  
HDG OUT4  
DSUB9  
O
O
Heading  
1) IEC 61162 (NMEA 0183) only  
2) Signal level: RS-232C  
3) Used for program upgrade  
1) IEC 61162 (NMEA 0183) Ver.1.5 or 2.0 (software)  
2) Talker: GP  
NAV OUT1  
(IEC 61162)  
NAV OUT2  
(RS-232C)  
MJ6  
Speed,  
course,  
position,  
3) Speed: 4800 bps  
DSUB9  
and time  
4) IEC 61162 (NMEA 0183) sentences: VTG, GGA,  
GLL, ROT, ZDA (on/off by menu)  
5) IEC 61162 (NMEA 0183) sentence output interval:  
1 sec  
6) ATT sentence  
Proprietary sentence or FURUNO sentence  
Only P sentence: output rate of 0.1 sec  
Accompanied with any of above sentences:  
output rate of 0.2 sec  
ATT sentence – True heading, pitching, rolling  
$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)  
7) Signal level:  
NAV OUT1: IEC 61162; NAV OUT2: RS-232C  
A-10  
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APPENDIX  
Connector  
Type  
Port Label  
I/O  
Signal  
Remarks  
LOG/ALARM  
MJ7  
O
Log  
signal  
200 pulse/nm or 400 pulse/nm (software), 0.5 A max.  
Heading alarm, 0.5 A max, normal close  
HDG  
alarm  
HDG IN  
MJ6  
I
Heading Heading data in either AD10 or IEC 61162 (NMEA  
0183) format (4800 bps) is automatically received.  
Priority of IEC 61162 (NMEA 0183) sentence is  
HDT>HDG>HDM.  
The signal is selected through the menu during the  
period of internal heading sensor failure.  
VBW/VHW/VLM may be input from a current indicator.  
Note: Each GPS receiver GPS1, GPS2, and GPS3 calculates VTG/GGA/GLL/ZDA. The  
output from HDG OUT and NAV OUT ports is one calculated by the GPS1. However,  
when the GPS1 is defective, the GPS2 replaces it. When both GPS1 and GPS2 are  
defective, the data calculated by the GPS3 is used.  
Parts Location  
MAIN Board (processor)  
20P8171A  
PWR Board  
20P8164  
Angular Rate  
Sensor Assy.  
SC-303  
Fuse  
GPS Receiver  
Assy. (GPS  
Receiver Module)  
20-513-131  
(GN-77NA-NF)  
FIL Board  
20P8165  
Processor unit, cover removed  
A-11  
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APPENDIX  
Parts List  
This equipment contains complex modules in which fault diagnosis and repair down to  
component level are not practical (IMO A.694(17)/8.3.1. Only some discrete components  
are used. FURUNO Electric Co. Ltd. believes identifying these components is of no value  
for shipborne maintenance; therefore, they are not listed in this manual. Major modules can  
be located on the parts location photo on page A-5.  
F U R U N O  
Model  
Unit  
SC-60  
SC-601  
PROCESSOR UNIT  
ELECTRICAL PARTS LIST  
Sep. 2001  
Ref.Dwg. C7248-K01-A  
Blk.No.  
Page  
SYMBOL TYPE  
CODE No.  
REMARKS  
SHIPPABLE  
ASSEMBLY  
PRINTED CIRCUIT BOARD  
B1  
B2  
B3  
20P8171A, MAIN  
20P8164, PWR  
20P8165, FIL  
004-380-270  
004-377-660  
004-377-680  
SC-601/601-D  
X
X
X
ASSEMBLY  
20-513-131  
(GN-77NA-NF)  
004-377-970  
004-382-240  
GPS Receiver assy.  
X
X
GSC-001  
Angular Rate  
Sensor assy. (SC-303)  
A-12  
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A -1  
1/1  
20AT-X-9851 -1  
PACKING LIST  
SC-60/120 (J/E)  
N A M E  
DESCRIPTION/CODE №  
O U T L I N E  
Q'TY  
ユニット  
UNIT  
SC-602  
表示部  
1
1
4
DISPLAY UNIT  
**  
004-377-310  
付属品  
保護カバー  
ACCESSORIES  
FP14-02801  
20-016-1091-2  
COVER  
100-297-032  
工事材料  
+トラスタッピンネジ  
INSTALLATION MATERIALS  
5X20 SUS304 1シュ  
+TAPPING SCREW  
000-802-081  
コード末尾に[**]の付いたユニットは代表の型式/コードを表示しています。  
DOUBLE ASTERISK DENOTES COMMONLY USED EQUIPMENT.  
(略図の寸法は、参考値です。 DIMENSIONS IN DRAWING FOR REFERENCE ONLY.)  
C7248-Z01-B  
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A-2  
1/1  
20AY-X-9855 -1  
PACKING LIST  
SC-1203F  
N A M E  
DESCRIPTION/CODE №  
SC-1203F  
O U T L I N E  
Q'TY  
1
ユニット  
GPSアンテナ  
UNIT  
GPS ANTENNA  
000-041-926  
工事材料  
鳥よけ  
INSTALLATION MATERIALS  
CP20-02241  
20-024-3101-2  
4
4
4
1
1
BIRD-REPELLENT FIXTURE  
100-315-302  
M10 SUS304  
六角ナット 1種  
HEX.NUT  
000-863-111  
10X30-A140  
座金  
WASHER  
000-809-251  
1211 50G  
スリーボンド  
SEALANT  
000-854-118  
JISB2404-5K-50  
ガスケット  
GUSKET  
000-809-250  
(略図の寸法は、参考値です。 DIMENSIONS IN DRAWING FOR REFERENCE ONLY.)  
20AY-X-9855  
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A - 3  
CODE NO.  
TYPE  
20AT-X-9406 -2  
1/1  
工事材料表  
INSTALLATION MATERIALS  
数量  
Q'TY  
番 号  
NO.  
名  称  
NAME  
型名/規格  
略  図  
OUTLINE  
用途/備考  
REMARKS  
DESCRIPTIONS  
ケーブル組品  
MJ-A3SPF0013-035  
1
2
3
1
1
1
POWER CABLE  
CODE NO.  
000-135-397  
ケーブル組品MJ  
CABLE ASSY.  
MJ-A6SPF0007-100  
CODE NO.  
000-125-237  
ケーブル組品MJ  
CABLE ASSY.  
MJ-A7SPF0006-100  
CODE NO.  
000-143-578  
FURUNO ELECTRIC CO .,LTD.  
(略図の寸法は、参考値です。 DIMENSIONS IN DRAWING FOR REFERENCE ONLY.)  
C7248-M04-C  
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A-4  
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A-5  
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A-6  
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A-7  
CODE NO.  
TYPE  
20AG-X-9404 -1  
1/1  
GP-80,GP-90,SC-55,GP-3500/F       
GP-1850,GP-1650,FA-100,GP-1640/F     
SC-60/120,GD/GP-280/680/380  
工事材料表  
INSTALLATION MATERIALS  
数量  
Q'TY  
番 号  
NO.  
名  称  
NAME  
型名/規格  
略  図  
OUTLINE  
用途/備考  
REMARKS  
DESCRIPTIONS  
アンテナケーブル組品  
選択 TO BE SELECTED  
8D-FB-CV *30M*  
1
2
1
1
ANTENNA CABLE ASSY.  
CODE NO.  
000-111-547  
ケーブル組品  
選択 TO BE SELECTED  
8D-FB-CV *50M*  
CABLE ASSY.  
CODE NO.  
000-117-599  
20AG-X-9404  
FURUNO ELECTRIC CO .,LTD.  
(略図の寸法は、参考値です。 DIMENSIONS IN DRAWING FOR REFERENCE ONLY.)  
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A-8  
CODE NO.  
TYPE  
004-372-420  
CP20-01701  
20AG-X-9405 -1  
1/1  
工事材料表  
INSTALLATION MATERIALS  
数量  
Q'TY  
番 号  
NO.  
名  称  
NAME  
型名/規格  
DESCRIPTIONS  
NJ-TP-3DXV-1  
略  図  
OUTLINE  
用途/備考  
REMARKS  
変換ケーブル組品  
1
2
3
4
2
1
1
1
CONVERT CABLE ASSY.  
CODE NO.  
000-123-809  
ビニールテープ  
NO360 02X19X10000  
クロ エスロン  
VINYL TAPE  
CODE NO.  
N-P-8DFB  
000-835-215  
コネクタ(N)  
CONNECTOR  
CODE NO.  
000-111-549  
絶縁テープ  
Uテープ 0.5X19X5M  
SELF-BONDING TAPE  
CODE NO.  
000-800-985  
20AG-X-9405  
FURUNO ELECTRIC CO .,LTD.  
(略図の寸法は、参考値です。 DIMENSIONS IN DRAWING FOR REFERENCE ONLY.)  
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D-1  
T akahashi T .  
T akahashi T .  
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D-2  
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D-3  
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D-4  
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D-5  
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D-6  
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INDEX  
A
L
Alarms.............................................................3-5  
Alarms menu...................................................3-5  
Local time .....................................................3-12  
Log pulse ......................................................3-10  
B
M
Battery replacement........................................4-5  
Maintenance  
C
battery replacement....................................4-5  
cleaning ......................................................4-1  
fuse replacement........................................4-6  
Menu tree........................................................A-1  
Compass display.............................................3-4  
Contrast ..........................................................3-2  
Control description..........................................3-1  
D
N
Data clearing...................................................4-4  
Demonstration mode.....................................3-13  
DGPS  
Nav data display.............................................3-3  
Nav out menu .................................................3-9  
NMEA version menu.......................................3-9  
manual setup ............................................3-13  
user beacon station editing.......................3-16  
user beacon station erasing......................3-17  
user beacon station individual erasing .....3-17  
user beacon station programming............3-15  
DGPS menu..................................................3-13  
Diagnostics .....................................................4-2  
DIM key...........................................................3-3  
DISP key.........................................................3-3  
Distance run display........................................3-4  
Distance run resetting...................................3-19  
O
Output data setup menu.................................3-8  
P
Position offset .................................................3-7  
Power on/off....................................................3-2  
Program version no. .......................................4-4  
R
Rate-of-turn display ........................................3-4  
S
Satellite status ................................................3-6  
Satellites  
E
Error messages...............................................4-6  
disabling .....................................................3-7  
status display..............................................3-6  
SAT STATUS key...........................................3-1  
Set and drift display........................................3-4  
Smoothing.......................................................3-7  
Steering display..............................................3-4  
System configuration ......................................... v  
System setup menu......................................3-11  
F
Fuse replacement ...........................................4-6  
G
Geodetic chart codes..................................... A-2  
Geodetic data................................................3-11  
GPS setup menu.............................................3-7  
H
T
Heading display ..............................................3-3  
Heading setup menu.....................................2-19  
Time format...................................................3-12  
TRIP menu....................................................3-19  
Troubleshooting..............................................4-2  
I
Illumination......................................................3-2  
U
Units of measurement ..................................3-12  
Index-1  
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