DGPS BEACON RECEIVER MODEL GR-80
C Yo u r L o c a l A g e n t / D e a l e r 9-52, Ashihara-cho, Nishinomiya, Japan Te l e p h o n e : Te l e f a x : 0 7 9 8 - 6 5 - 2 111 0798-65-4200 All rights reserved. Printed in Japan PUB. No. OME-43830 (YOSH) GR-80 FIRST EDITION H : : APR. 1997 MAR.
SAFETY INSTRUCTIONS CAUTION WARNING Do not open the equipment. Hazardous voltage which can cause electrical shock, burn or serious injury exists inside the equipment. Do not work inside the equipment unless familiar with electrical circuits. Position should always be checked against other sources to confirm reliability. GPS position and velocity accuracies are controlled by the U.S. Department of Defense. Turn off the equipment whenever you feel it is abnormal. Continued use may damage the equipment.
TABLE OF CONTENTS FOREWORD FOREWORD ............................................. 1 A Word to GR-80 Owners ....................... 1 Features ................................................... 1 SPECIFICATIONS .................................... 2 SYSTEM CONFIGURATION .................. 3 HOW DGPS WORKS ............................... 4 INSTALLATION ....................................... 5 Antenna Installation ................................ 5 Receiver Installation ...............................
SPECIFICATIONS Performance Frequency range Freq. resolution Receiver IF frequency Input sensitivity Interface (position input) 283.5 – 325.0 kHz 0.5 kHz Single superheterodyne 455 kHz 6 dBµV (MSK rate 100 bps, 10-3 bit error) Position input Hardware spec. Baud rate Power Requirements Power Forward switching (floating) Input voltage 10.2 to 31.
SYSTEM CONFIGURATION Whip Antenna ANTENNA COUPLER GPS Antenna Unit FURUNO DGPS BEACON RECEIVER GR-80 LOCK GPS Navigator (GPS Plotter) RECEIVER MENU FREQ STN ▼ ▲ ENT RESET RECTIFIER PR-62 Ship's Mains 12/24 VDC 3 100/110/200/220 VAC
HOW DGPS WORKS The DGPS reference stations are fixed at a geodetically surveyed position. The reference station tracks all satellites in view, downloads ephemeric data from them, and computes corrections based on its measurement and geodetic position. These corrections are then broadcast to GPS users by radio beacons (transmitters) to improve their position solution. Position accuracy for civil users of GPS is limited to about 50 meters.
INSTALLATION Ground Antenna Installation If the preamp unit is attached to a steel mast, run a ground wire between the ground terminal on the preamp unit and a stainless steel bolt welded to the mast. The ground wire should be as short as possible. (It is also recommended to ground the preamp unit when it is attached to a non-metallic mast.) Siting considerations • Install the antenna vertically and as high and far away from surrounding obstacles as possible.
Receiver Unit Installation Connections Siting considerations Power cable connector The receiver can be mounted on a tabletop, on the overhead or in a panel (requires optional flush mount kit). When selecting a mounting location keep the following points in mind; I/O cable connector 2A Fuse (2A) • Locate the receiver away from rain and water splash. • Keep the receiver away from heat sources. • Install the receiver out of direct sunlight. • The viewing angle of the front panel is ±45°.
Ground Pin arrangement on the DATA connector is shown below. For connection at the GPS navigator, see its manual. Connect a ground wire between the ground terminal at the rear of the receiver and a suitable ground point.
8. Press the [ENT] key. Initial Settings 9. Press the [RESET] key to reset the CPU and return to the normal operation mode. After installing the equipment, enter baud rate of connected GPS receiver, output data byte format and your area as follows: 10.Press the [MENU] key. "SET RCV MODE?" appears. Default settings 11.Press [▲] or [▼] to display "SET STN AREA?" Baud rate: 4800 bps Output data byte format: 6 of 8 Your area: Area 1 (USA, Canada, Bermuda, Brazil) 12.Press the [ENT] key. 13.
OPERATION Turning the Power On/Off Controls and Indications Power to the equipment may be turned on/ off at the mains switchboard. When the power is applied or the CPU is reset ([RESET] key pressed) the equipment proceeds as follows: INDICATION MEANING FURUNO GR-80 Appears for one sec. Mode and frequency, or reference station name MM: Manual Mode LM: Automatic L/L Mode LOCK LED Signal strength Lights when The taller the bar signal from the stronger the beacon station is received signal. received.
Menu Operation operation menu. To escape from the option mode menu, press the [RESET] key. Most functions are carried out through menus and there are two sets of menus, normal operation menu and option mode menu. Menu tree Figure 9 shows the menu tree. Normal operation menu The normal operation menu mostly contains items used in everyday operations such as dimmer and contrast level adjustment.
d) Press [▲] or [▼] to select MSK rate corresponding to frequency selected in step 7. Refer to the DGPS reference station lists which start on page 16. e) Press the [ENT] key. f) Press the [MENU] key. Adjusting Brilliance, Contrast The brilliance and contrast of the LCD can be adjusted as follows: 1. Press the [MENU] key. 2. Press [▲] or [▼] to display "SET DIMMER?" When signal is received, LOCK LED lights. 3. Press the [ENT] key. Note: If you do not know the MSK rate, select AUTO, which is 100 or 200.
Signal-to-noise (S/N) ratio displays the ratio between the desired signal and unwanted noise on the selected frequency. The higher the S/N ratio the better the quality of the signal. Displaying Position 1. Press the [MENU] key. 2. Press [▲] or [▼] to display "MONITOR L/L?" When the ship is in the sy\ervice area of a beacon station,this number should fbe between 20 and 22.If not,chack as follows. • Check the grounding. • Check the radar beam interference. • Check the noise of power generator of the ship.
TROUBLESHOOTING Troubleshooting Table The table which follows will help the user with diagnosing operational problems. Symptom Remedy No output data • Check power supply. • Check DATA connector. • Check host port assignment. Random output data • Check if tuned to valid beacon. • Radio beacon may be in test mode or off air. • Check if MSK rate is correct. • Check if baud rate is correct. • Measure voltage at antenna coax cable. • Try different beacon antenna. No signal lock • Check power supply.
Diagnostic Test Remarks on the diagnostic test The diagnostic test checks the circuit board and keys for proper operation. • When the equipment finds RAM or ROM error RAM NG (No Good) or ROM NG appears and the test stops. Press the [RESET] key to reset the CPU. Try the test again. • When the equipment detects a faulty key two beeps are released. To conduct the diagnostic test; 1. Press [RESET] while pressing and holding down [MENU]. Release [MENU] when the display shows "SELF TEST?" 2.
DGPS REFERENCE STATIONS Area 1: USA, Canada, Bermuda Location ALEXANDRIA ANNETTE ISLAND APPLETON ARANSAS PASS BARBERS PT BASS HARBOR BRUNSWICK BUFFALO C.MENDOCINO CAPE CANAVERAL CAPE HENLOPEN CAPE HENRY CAPE HINCHEN-BROOK CHARLESTON CHATHAM CHEBOYGAN CLARK COLD BAY DETROIT DULUTH EGMONT KEY ENGLISH TURN FORT MACON FORT STEVENS GALVESTON GUSTAVUS ISABELLA KANSAS CITY KENAI KEY WEST KODIAK KOKOLE POINT LOUISVILLE MEMPHIS MIAMI MILLERS FERRY MILWAUKEE MOBILE PT MONTAUK PT MORICHES NEEBISH IS.
Area 1: USA, Canada, Bermuda (continued) (0 = Auto) Location VICKSBURG WHIDBEY IS WHITEFISH PT WHITNEY WILDWOOD WISCONSIN PT YOUNGSTOWN Name in GR-80 Freq. (kHz) VICKSBURG 313 WHIDBEY.IS 302 WHITEFISH 318 WHITNEY 310 WILDWOOD 301 WISCONSIN 296 YOUNGSTOWN 322 Latitude N32.20 N48.19 N46.46 N42.44 N38.57 N46.43 N43.14 Longitude MSK Rate Country W90.55 200 MS,USA W122.42 100 WA,USA W84.57 100 MI,USA W103.19 200 NE,USA W74.52 200 NJ,USA W92.01 100 WI,USA W78.
Area 2: Europe, Egypt (0 = Auto) Location OOSTENDE PHARE Name in GR-80 OOSTENDE Freq. (kHz) Latitude 311.5 N51.14 BLAAVANDS HUK HAMMERODDE SKAGEN BLAAVANDS HAMMERODDE SKAGEN RISTNA LT RISTNA LT MANTYLUOTO OUTOKUMPU PORKKALA PUUMALA TURKU MANTYLUOTO OUTOKUMPU PORKKALA PUUMALA TURKU 298 293.5 285 301.5 304 CAP BEAR CAP FERRET ECKMUHL GATTEVILLE LES BALEINES PORQUEROLLES REVELLATA SAINT MATHIEU CAP.BEAR CAP.FERRET ECKMUHL GATTEVILLE BALEINES PORQUEROLL REVELLATA ST.MATHIEU 304.5 287 312.5 297.
Area 2: Europe, Egypt (continued) (0 = Auto) Location CABO DE LA NAO CABO DE PALOS CABO FINISTERRE CABO GATA CABO PENAS CABO SALOU CABO SAN SEBASTIAN CASTELLON CEUTA ESTACA DE BARES LA ENTALLADA MACHICHACO MAHON MALAGA PUNTA DE CALA FIGUERA ROTA TENERIFE Name in GR-80 Freq. (kHz) Latitude NAO 284.5 N38.44 PALOS 313.5 N37.38 FINISTERRE 289 N42.53 GATA 298.5 N36.43 PENAS 297 N43.39 SALOU 289 N41.03 SEBASTIAN 290.5 N41.53 CASTELLON 311 N39.58 CEUTA 311.5 N35.54 BARES 310 N43.47 ENTALLADA 292.5 N28.
Area 3: Japan, Korea,S.
Area 3: Japan, Korea, S.America,Russia, China, Singapore (continued) Location AFRICA ALEVINA ANAPSKY ANDREA ASTRAHNASKY BALTIYSK BEGICHEV CAMENKA CANIN NOSE CARAGINSKY CORSAKOVSKY COTELNY CRUTOGOROVA DEDGNEVA DGEDGINSKY ELIZAROVA ENISEY GAMOV INDYGIRSKY OLENIY PETROPAVLOVSKY RUSSIAN CAT SET.NAVOLOCK SHEPELEVSKIY STERLEGOV STOLBOVOY TONKY VAN DER LINDA VASILIEVA VIZE VRANGELIA YARANGAI Name in GR-80 Freq. (kHz) AFRICA 291.5 ALEVINA 303.5 ANAPSKY 315.5 ANDREA 291.5 ASTRAHNASK 291.5 BALTIYSK 298.
EQUIPMENT LISTS Standard equipment Name Type Code No. Qty Receiver Unit GR-80 1 Antenna Coupler GR-8 1 Installation Materials CP08-01601 004-396-030 1 set CP08-01601 004-396-900 1 set CP08-01611 004-396-560 1 set SP08-01800 004-396-020 1 set Code No.
CONNECTABLE FURUNO EQUIPMENT Connectable? Remote Control? RS Spec. YES ROM Ver. 3 and higher NO 422 GP-50 M2 YES NO 232C GP-50 M3 YES NO 232C GP-70 NO – – YES ROM Ver. 3 and higher NO 232C/422 GP-80 YES YES 232C/422 GP-188 YES MAIN Board: Ver. 28, ARTOP: Ver. 24 and higher NO 422 NO – – YES ROM Ver.
REMEDY FOR THE INTERFERENCE TO A VHF RADIOTELEPHONE If a VHF radiotelephone is interfered by signal from the data cable between GPS receiver and the GR-80, follow the procedure shown below. Procedure 1. The screen of the data cable is grounded effectively. GR-80 DATA Connector DATA Cable The shield must be grounded through the cable clamp Shield Signal Cable GR-80 DATA Connector The shield must be grounded through the cable clamp. DATA Cable Solder the shield to pin No.7.
GR-80 DATA Connector Fuse Power line GP-30 DATA Cable Solder the shield to pin No.7. GP-30 DATA Cable Wind copper tape or mesh tape around the cable before clamping. When connecting with GP-30 2. Add an EMI core, TRCN-40-27-15 (Code No. 000-113-798) as shown in the figure below.
