Furuno 1761 MARK-3 User manual

C
9-52, Ashihara-cho,
Nishinomiya, Japan
Telephone: [phone]
Telefax: 0798-65-4200
Your Local Agent/Dealer
All ri
g
hts reserved.
PUB. No. IME-34810-C
MODEL1761MARK-3
(
YOSH
)
FIRST EDITION : AUG. 1998
C : SEP. 4, 2001
Printed in Japan

i
SAFETY INSTRUCTIONS
WARNING
Radio Frequency Radiation Hazard
The radar scanner emits electromagnetic radio frequency (RF) energy which can be
harmful, particularly to your eyes. Never look directly into the scanner aperture from a
close distance while the radar is in operation or expose yourself to the transmitting
scanner at a close distance.
Distances at which RF radiation levels of 100 and 10 W/m2exist are given in the table
below.
Note: If the scanner unit is installed at a close distance in front of the wheel house,
your administration may require halt of transmission within a certain sector of scanner
revolution. This is possible Ask your FURUNO representative or dealer to provide
this feature.
MODEL Radiator
type Distance to
100 W/m
point
Distance to
10 W/m
point
22
1761 MK-3 XN10A 0.2 m Worst case 3.0 m

ii
CAUTION
Observe the following compass safe
distances to prevent deviation of a
magnetic compass:
Ground the equipment to
prevent electrical shock and
mutual interference.
Display
unit
Standard Steering
compass compas
0.50 m 0.40 m
Scanner
unit 1.00 m 0.80 m
Jß
DANGER
Electrical shock hazard.
Do not touch parts in -
side this cover.
Name: Danger Label
Type: 14-055-4202-0
Code No.: 100-245-220
HIGH TENSION WARNING
Do not open the equipment
unless totally familiar with
electrical circuits and
service manual.
Only qualified personnel
should work inside the
equipment.
Wear a safety belt and hard
hat when working on the
scanner unit.
Serious injury or death can
result if someone falls from
the radar scanner mast.
WARNING
Construct a suitable service platform
from which to install the scanner unit.
Serious injury or death can result if some-
one falls from the radar scanner mast.
Turn off the power at the mains switch-
board before beginning the installation.
Fire, electrical shock or serious injury can
result if the power is left on or is applied
while the equipment is being installed.
Do not install the display unit where it
may get wet from rain or water splash.
Water in the display unit can result in fire,
electrical shock or equipment damage.
ELECTRICAL
SHOCK
HAZARD
WARNING
Be sure that the power supply is
compatible with the voltage rating of
the equipment.
Connection of an incorrect power supply
can cause fire or equipment damage. The
voltage rating of the equipment appears
on the label above the power connector.
Use only the specified power cable.
Fire or equipment damage can result if a
different cable is used.

iii
TABLE OF CONTENTS
SYSTEM CONFIGURATION .............................................................iv
EQUIPMENTS LIST............................................................................v
1. MOUNTING
1.1 Mounting Methods for Scanner Unit..................................................................1-1
1.2 Fixing Holes in Mounting Platform ....................................................................1-1
1.3 Fastning the Radiator to the Radiator Bracket ..................................................1-2
1.4 Mounting the Scanner Unit................................................................................1-2
1.5 Display Unit Installation.....................................................................................1-4
2. CONNECTIONS
2.1 Connecting the Signal Cable.............................................................................2-1
2.2 Display Unit Connections ..................................................................................2-2
2.3 Connection of External Equipment....................................................................2-3
2.4 Fuse Exchange for 24/32 VDC Power cable.....................................................2-4
2.5 Checking the Installation ...................................................................................2-4
3. ADJUSTMENTS
3.1 Preparation........................................................................................................3-1
3.2 Sweep Timing....................................................................................................3-1
3.3 Relative Bearing Alignment ...............................................................................3-2
3.4 MAG or GYRO Indication..................................................................................3-3
3.5 Range Unit Selection ........................................................................................3-3
3.6 Measurement of Blind Shadow Sectors ............................................................3-3
INSTALLATION MATERIALS, ACCESORIES, SPARE PARTS..... A-1
OUTLINE DRAWING ...................................................................... D-1
SCHEMATIC DIAGRAM ................................................................. S-1

iv
SYSTEM CONFIGURATION
*Equivalent to NMEA 0183
Option
RDP-099
Navigation
device IEC 61162* (In/Out)
Gyro-
compass Gyro Converter
AD-100
12/24/32 VDC
Rectifier
RU-3423
115/230 VAC
External Alarm
Buzzer OP03-21
Scanner Unit
XN10A-RSB-0070-065
Display Unit
12 VDC: 10A
24/32 VDC: 5A
Intergrated Heading
Sensor PG-1000

v
EQUIPMENT LISTS
Standard Supply
Optional Supply
emaNepyT.oNedoCytQskrameR
tinUrennacS560-0700-BSR-A01NX—1
tinUyalpsiD3M160-990-PDR—1
noitallatsnI slairetaM
00291-30PC129-680-000
tceleS eno
,10291-30PC,10021-30PC langism01,elbacrewop elbac
01291-30PC229-680-000 ,10291-30PC,10021-30PC langism51,elbacrewop elbac
02291-30PC329-680-000 ,10291-30PC,10021-30PC langism02,elbacrewop elbac
03291-30PC429-680-000 ,10291-30PC,10021-30PC langism03,elbacrewop elbac
seirosseccA00060-30PF251-580-000tes1 ,20640-30PF,10640-30PF 01060-30PF
straPerapS00850-30PS329-080-000tes1
emaNepyT.oNedoCskrameR
rezzuBlanretxE12-30PO790-030-000
reifitceR3243-UR344-030-000
.yssAelbaC
050-2100FPS6A-JM424-431-000 m5,rednuosoediv,diavanroF ,sdnehtobtarotcennocP6/w ssorc
001-2100FPS6A-JM718-331-000 m01,rednuosoediv,diavanroF ,sdnehtobtarotcennocP6/w ssorc
001-9000FPS6A-JM632-521-000 P6/wm01,001-DAroF edisenotarotcennoc
tiKtnuoMhsulF770-30PO001-634-800tinuyalpsidroF
revoCtsuD1040-820-30000-780-001tinuyalpsidroF

1-1
1. MOUNTING
1.1 Mounting Methods for
Scanner Unit
• The scanner unit is generally installed ei-
ther on top of the wheelhouse or on the
radar mast on a suitable platform. Locate
thescanner unit where there is a good all-
round view. Any obstruction will cause
shadow and blind sectors. A mast for in-
stance, with a diameter considerably less
than the width of the radiator, will cause
only a small blind sector, but a horizontal
spreader or crosstrees in the same hori-
zontal plane as the scanner unit would be
a much more serious obstruction; you
would need to place the scanner unit well
above or below it.
• It is rarely possible to place the scanner
unit where a completely clear view in all
directions is available. Thus, you should
determine the angular width and relative
bearingof any shadowsectors for theirin-
fluence on the radar at the first opportu-
nity after fitting.
• Ifyou have aradio direction finderon your
boat, locate its antenna clear of the scan-
ner unit to prevent interference to the di-
rection finder. A separation of more than
two meters is recommended.
• To lessen the chance of picking up elec-
trical interference, avoid where possible
routingthesignalcablenear other onboard
electrical equipment. Also avoid running
the cable in parallel with power cables.
• A magnetic compass will be affected if
placed too close to the scanner unit. Ob-
serve the following compass safe dis-
tances to prevent deviation of a magnetic
compass: Standard compass, 1.00 m,
Steering compass, 0.75 m.
• Do not paint the radiator aperture, to en-
sure proper emission of the radar waves.
• Whenthis radar is to beinstalled on larger
vessels, consider the following points:
• Thesignal cablerun betweenthe scan-
ner and the display comes in lengths
of 10 m (standard), 15 m, 20 m and 30
m. Whatever length is used it must be
unbroken; namely, no splicing allowed.
• Deposits and fumes from a funnel or
otherexhaust ventcan adverselyaffect
the aerial performance and hot gases
may distort the radiator portion. The
scanner unit must not be mounted
where the temperature is more than
70°C.
As shown in the figure below, the scanner
unitmay be installed on thebridge, ona com-
mon mast or on the radar mast.
(a) On bridgh (b) Common mast
(c) Radar mast
Figure 1-1 Scanner unit mounting methods
1.2 Fixing Holes in Mounting
Platform
Referring to the outline drawing on page D-
1, drill five holes in the mounting platform:
four holes of 15 mm diameter for fixing the
scanner unit and one hole of 25-30 mm di-
ameter for the signal cable.

1-2
1.3 Fastening the Radiator to
the Radiator Bracket
For your reference, scanner installation ma-
terials list appears in the packing lists at the
back of this manual.
1. Remove the radiator cap from the radia-
tor bracket.
2. Coat contacting surface between scan-
nerradiator and radiator bracket with an-
ticorrosivesealantasshown inFigure1-2.
Coat hatched area with
anticorrosive sealant. Groove
Radiator
Figure 1-2 Coating the bottom of
scanner radiator for XN10A with
anticorrosive sealant
3. Coat threaded holes on the scanner ra-
diator with anticorrosive sealant.
4. Grease the O-ring and set it to the radia-
tor bracket.
5. Lay the scanner radiator on the radiator
bracket.
6. Coat the radiator fixing bolts (4 pcs.) with
anticorrosivesealant. Fastenthe scanner
radiator to the radiator bracket with the
radiator fixing bolts, flat washers and
spring washers.
Flat washer
Spring washer
Hex head bolt
(M8 x 30)
Radiator bracket
Coat bolts with
anticorrosive
sealant.
Scanner
radiator
O-ring
Coat threaded
holes with anti-
corrosive
sealant.
Figure 1-3 Fastening the radiator bracket to
the scanner unit chassis
1.4 Mounting the Scanner Unit
The scanner unit can be mounted using the
fixing holes on the outside (200 x 200 mm)
or inside (140 x 150 mm) the scanner unit.
Outside fixing holes
Use the hex head bolt ( supplied ) to mount
the scanner unit as below.
1. Lay the corrosion-proof rubber mat (sup-
plied) on the mounting platform.
Ground
terminal
Rubber
mat
Bow mark
Figure 1-4 Location of rubber mat

1-3
2. Laythe scannerunit on themounting plat-
form, orienting it as shown in Figure 1-5.
STERN BOW
Figure 1-5 Scanner unit
CAUTION
CAUTION
Do not lift the scanner unit by the
radiator; lift it by the housing.
The radiator may be damaged.
3. Insert four hex bolts and seal washers
from the top of the scanner housing. In-
sert the seal washers with the larger di-
ameter next to the bolt heads. Be sure
thesealwasher,notother washers,isnext
to bolt head.
Hex bolt
Seal washer
Flat washer
Spring washer
Nut
Figure 1-6 Fixing the scanner unit chassis
4. Pass flat washers, spring washers and
nuts onto hex bolts. Fasten by tightening
nuts. Do not fasten by tightening the hex
bolts; seal washers may be damaged.
Scanner
unit
Mounting
platform
Silicone
sealant
Flat washer
Rubber mat
Seal washer
Figure 1-7 How to fasten scanner unit to
mounting platform
5. Coat flat washers, spring washers, nuts
and exposed parts of bolts with anticor-
rosive sealant.
6. Prepareground point inmountingplatform
(within 300 mm of ground terminal on
scanner unit) using M6 x 25 bolt, nut and
flat washer.
7. Runthe ground wire(RW-4747,370mm)
between the ground terminal and ground
point.
8. Coat ground terminal and ground point
with silicone sealant as shown in Figure
1-9.
Ground
terminal
Hex bolt
Flat washer
Spring washer
Flat washer
Hex nut
Silicone
sealant
Hex nut
Weld here.
Silicone
sealant
Ground
wire
Scanner
unit
OR
Flat washer
Spring washer
Ground
wire
GROUND
TERMINAL
GROUND
POINT
Hex nut
Figure 1-8 How to coat ground point and
ground terminal with silicone sealant