Furuno 851 MARK-2 User manual

Installation Manual
MARINE RADAR MODEL 851 MARK-2
SAFETY INSTRUCTIONS...........................................................................................i
SYSTEM CONFIGURATION .....................................................................................iii
EQUIPMENT LISTS...................................................................................................iv
1. MOUNTING ........................................................................................................1-1
1.1 Mounting Methods for Antenna Unit........................................................................................1-1
1.2 Fixing Holes in Mounting Platform...........................................................................................1-2
1.3 Fastening the Radiator to the Radiator Bracket ......................................................................1-2
1.4 Mounting the Antenna Unit......................................................................................................1-3
1.5 Connecting the Signal Cable...................................................................................................1-7
1.6 Mounting Methods for Display Unit........................................................................................1-10
1.7 Mounting the Display Unit......................................................................................................1-11
2. WIRING...............................................................................................................2-1
2.1 Connections.............................................................................................................................2-1
2.2 Input/Output Data List..............................................................................................................2-3
2.3 Attaching OPTION Connector .................................................................................................2-4
2.5 Installation Check List..............................................................................................................2-7
3. ADJUSTMENTS.................................................................................................3-1
3.1 Checking magnetron heater voltage........................................................................................3-1
3.2 Initial Adjustment of Picture .....................................................................................................3-2
3.3 Displaying the Installation Menus............................................................................................3-3
3.4 Entering Initial Settings............................................................................................................3-4
3.5 Heading Alignment.......................................................................................................................3-5
3.6 Sweep Timing ..........................................................................................................................3-6
PACKING LIST ....................................................................................................... A-1
OUTLINE DRAWINGS............................................................................................ D-1
INTERCONNECTION DIAGRAM .......................................................................... S-1
SCHEMATIC DIAGRAMS........................................................................................S-2
2.4 Connection of two NMEA equipments.....................................................................................2-6

C
9-52, Ashihara-cho,
Nishinomiya, Japan
Telephone: [phone]
Telefax: 0798-65-4200
Your Local Agent/Dealer
A
ll rights reserved.
PUB. No. IME-34900-D
MODEL 851 MARK-2
(
YOSH
)
FIRST EDITION : JUL. 2000
D : SEP. 4, 2001
Printed in Japan

i
WARNING
Radio Frequency Radiation Hazard
The radar antenna emits electromagnetic radio frequency (RF) energy which can be
harmful, particularly to your eyes. Never look directly into the antenna aperture from a
close distance while the radar is in operation or expose yourself to the transmitting
antenna at a close distance.
Distances at which RF radiation levels of 100 and 10 W/m
2exist are given in the table
below.
Note: If the antenna 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 antenna
revolution. This is possible  Ask your FURUNO representative or dealer to provide
this feature.
Type Radiator
type Distance to
100 W/m
point
Distance to
10 W/m
point
22
MODEL 851
MARK-2 XN10A 0.2 m Worst case 3.0 m
SAFETY INSTRUCTIONS

ii
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
antenna unit.
Serious injury or death can
result if someone falls from
the radar antenna mast.
WARNING
Construct a suitable service platform
from which to install the antenna unit.
Serious injury or death can result if some-
one falls from the radar antenna 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.
ELECTRICAL
SHOCK
HAZARD
Turn off the radar power
switch before servicing the
antenna unit. Post a warn-
ing sign near the switch
indicating it should not be
turned on while the antenna
unit is being serviced.
Prevent the potential risk of
someone begin struck by the
rotating antenna and expo-
sure to RF radiation 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.
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
0.70 m 0.50 m
Antenna
unit 1.00 m 0.75 m
Use the proper fuse.
Use of a wrong fuse can result in fire or
permanent equipment damage.

iii
SYSTEM CONFIGURATION
*Equivalent to NMEA 0183
Option
RDP-117-5-M2
Navigation
device
IEC 61162* (In/Out)
Gyro-
compass
Gyro Converter
AD-100
Ship's mains
12-24 VDC
Rectifier
RU-3423
Ship's mains
100/110/115/
200/220/230 VAC
1φ, 50/60Hz
External Alarm
Buzzer OP03-169
Antenna Unit
XN10A-RSB-0070-065
Display Unit
Remote Display FMD-811
Intergrated Heading
Sensor PG-1000

iv
EQUIPMENT LISTS
Standard Supply
Name Type Code No. Qty Remarks
Antenna Unit XN10A-RSB-0070-065 －1
Display Unit RDP-117-5-M2 －1
CP03-21500 000-087-747
CP03-18401, power cable,
10 m signal cable
CP03-21510 000-087-748
CP03-18401, power cable,
15 m signal cable
CP03-21520 000-087-749
CP03-18401, power cable,
20 m signal cable
CP03-21530 000-087-750
CP03-18401, power cable,
30 m signal cable
Installation
Materials
CP03-21540 000-086-548
Select
one
CP03-18401, power cable,
w/o signal cable
Accessories FP03-05900 008-462-050 1 set
Spare Parts SP03-12100 000-086-964 1 set
Optional Supply
Name Type Code No. Qty Remarks
External Buzzer OP03-169 1
Rectifier RU-3423 －1
FM-C6FPS001-050 000-142-031 1 For AD-100/NAV, 5 m w/6P
connector at one side
FM-C6FPS001-100 000-142-030 1 For AD-100/NAV, 10 m w/6P
connector at one side
FM-C6FPD001-050 000-143-897 1 For PG-1000/NAV, 5 m w/6P
connector at both ends, Straight
FM-C6FPD001-100 000-143-898 1 For PG-1000/NAV, 10 m w/6P
connector at both ends, Straight
FM-C6FPD002-050 000-143-895 1 For NAV, 5 m w/6P connector at
both ends, Cross
Cable Assy.
FM-C6FPD002-100 000-143-896 1 For NAV, 10 m w/6P connector
at both ends, Cross
OP03-170-5 008-466-600 1
For E/S/ NAV, 5m w/6P connector
at one side, OP03-172
OP03-170-10 008-466-610 1
For E/S/ NAV, 10m w/6P connector
at one side, OP03-172
OP03-171-5 008-466-620 1
For E/S/ NAV, 5m w/6P connector
at both ends, OP03-172
Cable set
OP03-171-10 008-466-630 1
For E/S/ NAV, 10m w/6P connector
at both ends, OP03-172
Remote Display FMD-811 －1 LCD type

1-1
1. MOUNTING
1.1 Mounting Methods for Antenna Unit
•The antenna unit is generally installed either on top of the wheelhouse or on
the radar mast on a suitable platform. Locate the antenna unit where there is a
good all-round view. Any obstruction will cause shadow and blind sectors.
A mast for instance, 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 horizontal plane as the antenna unit would be a much
more serious obstruction; you would need to place the antenna unit well above
or below it.
•It is rarely possible to place the antenna unit where a completely clear view in
all directions is available. Thus, you should determine the angular width and
relative bearing of any shadow sectors for their influence on the radar at the
first opportunity after fitting.
•If you have a radio direction finder on your boat, locate its antenna clear of the
antenna unit to prevent interference to the direction finder. A separation of
more than two meters is recommended.
•To lessen the chance of picking up electrical interference, avoid where possible
routing the signal cable near 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 antenna unit.
Observe the following compass safe distances to prevent deviation of a
magnetic compass: Standard compass, 1.00 m, Steering compass, 0.75 m.
•Do not paint the radiator aperture, to ensure proper emission of the radar
waves.
•When this radar is to be installed on larger vessels, consider the following
points:
!The signal cable run between the antenna 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 other exhaust vent can adversely
affect the aerial performance and hot gases may distort the radiator portion.
The antenna unit must not be mounted where the temperature is more than
70°C.

1. MOUNTING
1-2
As shown in the figure below, the antenna unit may be installed on the bridge, on
a common mast or on the radar mast.
(a) On bridge (b) Common mast
(c) Radar mast
Figure 1-1 Antenna 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 antenna unit and one hole
of 25-30 mm diameter for the signal cable.
1.3 Fastening the Radiator to the Radiator Bracket
There are installation materials for the Radiator not shown in the packing list.
These are as shown below.
Name Qty Remarks
O-ring 1 NBR
Hex. head bolt 4 M8 x 30
Flat washer 4 M8
Spring washer 4 M8
Silicone sealant 1 #1211, 50g
1. Remove the radiator cap from the radiator bracket.
2. Coat contacting surface between antenna radiator and radiator bracket with
silicone sealant as shown in Figure 1-2.
Coat hatched area with
silicone sealant. Groove
Radiator
Figure 1-2 Coating the bottom of antenna radiator for
XN10A with silicone sealant

1. MOUNTING
1-3
3. Coat threaded holes on the antenna radiator with silicone sealant.
4. Grease the O-ring and set it to the radiator bracket.
5. Lay the antenna radiator on the radiator bracket.
6. Coat the radiator fixing bolts (4 pcs.) with silicone sealant. Fasten the
antenna 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
silicone sealant.
Antenna
radiator
O-ring
Coat threaded
holes with silicone
sealant.
Figure 1-3 Fastening the radiator bracket to the antenna unit chassis
1.4 Mounting the Antenna Unit
The antenna unit can be mounted using the fixing holes on the outside (200 x
200 mm) or inside (140 x 150 mm) the antenna unit.
Outside fixing holes
Use the hex head bolt (supplied) to mount the antenna unit as below.
1. Lay the corrosion-proof rubber mat (supplied) on the mounting platform.
Ground
terminal
Rubber
mat
Bow mark
Figure 1-4 Location of rubber mat

1. MOUNTING
1-4
2. Lay the antenna unit on the mounting platform, orienting it as shown in Figure
1-5.
STERN BOW
Figure 1-5 Antenna unit
CAUTION
Do not lift the antenna 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 antenna housing.
Insert the seal washers with the larger diameter next to the bolt heads. Be
sure the seal washer, not other washers, is next to bolt head.
Hex bolt
Seal washer
Flat washer
Spring washer
Nut
Figure 1-6 Fixing the antenna unit chassis

1. MOUNTING
1-5
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.
Antenna
unit
Mounting
platform
Silicone
sealant
Flat washer
Rubber mat
Seal washer
Figure 1-7 How to fasten antenna unit to mounting platform
5. Coat flat washers, spring washers, nuts and exposed parts of bolts with
silicone sealant.
6. Prepare ground point in mounting platform (within 300 mm of ground terminal
on antenna unit) using M6 x 25 bolt, nut and flat washer.
7. Run the ground wire (RW-4747, 340 mm) between the ground terminal and
ground point.
8. Coat ground terminal and ground point with silicone sealant as shown in
Figure 1-8.
Ground
terminal
Hex bolt
Flat washer
Spring washer
Flat washer
Hex nut
Silicone
sealant
Hex nut
Weld here.
Silicone
sealant
Ground
wire
Antenna
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

1. MOUNTING
1-6
Fixing holes inside antenna unit
This method requires removal of the RF unit in the antenna unit to access inside
fixing holes. Use hex head bolts, flat washers, spring washers and nuts (local
supply) to mount the antenna unit, confirming length of bolts.
1. Loose four hex. bolts to open the antenna unit. Refer to Figure 1-10 for
location.
RFunit
Hex head bolt
M10X20 4pcs.
Hex head bolt
M8X25
2pcs.
Spring Washer
M10 4 pcs.
Cover
Pan head screw
M3X8 4pcs.
Upper chassis
Square bushing
Lower chassis
Figure 1-9 Antenna unit chassis, upper chassis separated
2. Unplug connector connected between upper and lower chassis.
3. Separate upper chassis from lower chassis by removing two hex head bolts.
4. Remove cover by unfastening four pan head screws.
5. Remove connector from RF unit.
6. Remove RF unit by unfastening four hex head bolts.
7. Lay the corrosion-proof rubber mat (supplied) on the mounting platform.
8. Fasten the lower chassis to the mounting platform with hex head bolts, spring
washers, flat washers and nuts (local supply), and then coat flat washers,
nuts and exposed parts of bolts with silicone sealant. Cut a slit in rubber
bushing and insert bolt into bushing. Do not use seal washers.
9. Reassemble RF unit, cover and upper chassis.
10.Set four caps (supplied) into outside fixing holes.
11.Do steps 6-8 in “Outside fixing holes”.

1. MOUNTING
1-7
1.5 Connecting the Signal Cable
Only one signal cable runs from the display unit to the antenna unit. In order to
minimize the chance of picking up electrical interference, avoid where possible
routing the signal cable near other onboard electrical equipment. Also, avoid
running the cable in parallel with power cables. Pass the cable through the hole
and apply sealing compound around the hole for waterproofing.
1. Open the antenna cover by loosening four hex. bolts, and then fix the stay.
Stay
Cable gland
Hex. bolt
Figure 1-10 Antenna unit chassis, cover opened
2. Unfasten the cable gland assembly (plate, gasket, flat washer).
3. Pass the signal cable w/connector through the bottom of the antenna unit
chassis. Pass the cable through the gland assembly as shown below.
Plate
Bolt
4-M4X16
Gasket
Flat
washer
Crimp-on lug
Figure 1-11 Passing the signal cable through the cable gland assembly
4. Fasten the crimp-on lug on the shield to one of the fixing bolts of the cable
gland assembly.

1. MOUNTING
1-8
5. Position the signal cable so that no more than 4 cm of the sheath is exposed
as shown in the figure below. Tighten fixing bolts.
Sheath
CABLE GLAND
Plate
Gasket
Flat
washer
Bolt
Within 4 cm
Tubing
Shield
Figure 1-12 How to fix signal cable in cable gland
6. Unfasten four screws shown in the figure below.
Four screws
Figure 1-13 Antenna unit chassis, cover opened
7. Pass the signal cable through the cable protector.
Cable
protector
Figure 1-14 Antenna unit chassis, cover opened
8. Connect the signal cable to the RTB Board (03P9249), referring to the
interconnection diagram and the figure below.

1. MOUNTING
1-9
9. Attach three EMI cores to the signal cable as shown below.
EMI core
RFC-13
Route cable along here.
Lead in
cable here.
J821 VH9P
J822 VH2P
J823 VH4P
J824 NH13P
Clamp
Figure 1-15 Antenna unit chassis, cover opened
10.Fix the signal cable with the cable clamp.
11.Release the stay and close the cover. Loosely fasten the cover fixing screws;
you will have to make some adjustments inside after completion of wiring.
Note:When closing the cover, set the gaskets to grooves in the bottom chassis,
then tighten bolts.
BOTTOM
CHASSIS
GASKET
GROOVE
SCANNER BOLT
Torque :9.8 ± 0.1 N • m
Figure 1-16

1. MOUNTING
1-10
1.6 Mounting Methods for Display Unit
When selecting a mounting location for the display unit keep in mind the following
points.
•The display unit is designed and constructed to be splashproof, thus it can be
installed outdoors. You can even hose it down after a day’s outing. If it is to be
installed outdoors, we recommend installing it an enclosed cabinet, for
maximum protection against the marine environment.
•The temperature and humidity of the mounting location should be stable and
moderate. No LCD can provide adequate contrast if the ambient temperature is
too extreme.
•The display unit consumes only a moderate amount of power, so there is no
need for forced air ventilation. However, you should provide adequate space
behind and around the unit to permit circulation of air and to provide convenient
access to the rear connectors.
•Even though the picture is quite legible even in bright sunlight, keep the display
unit out of direct sunlight or at least shaded because of heat that can build up
inside the cabinet.
•Locate the display unit in a position where you can view and operate it
conveniently but where there is no danger of salt or fresh water spray or
immersion.
•The orientation of the display unit should be so the radar screen is viewed
while the operator is facing in the direction of the bow. This makes
determination of your position much easier.
•Make sure you allow enough clearance both to get to the connectors behind
the unit and to allow you to get your hands in on both sides to loosen or tighten
the mounting knobs. Make sure you leave at least a foot or so of “service loop”
of cables behind the unit so it can be pulled forward for servicing or easy
removal of the connectors.
•A magnetic compass will be affected if placed too close to the display unit.
Observe the minimum compass safe distances to prevent deviation of a
magnetic compass: standard compass, 0.7 meters, and steering compass, 0.5
meters.

1. MOUNTING
1-11
1.7 Mounting the Display Unit
The display unit is designed to be mounted on a tabletop.
1. Using the hanger as a template, mark screw locations in the mounting
location.
2. Fix the hanger to the mounting location with four 5 x 20 tapping screws
(supplied).
3. Fit the knob bolts to the display unit.
4. Install the display unit in the hanger.
5. Tighten the knob bolts securely.
*140
(5.51")
10
(0.39")
238
(9.37")
15
(0.59")
15
(0.59")
*80
(3.15")
*80
(3.15")
100
(3.94")
20
(0.79")
268
(10.55")
130
(5.12")
4 - ∅6
FIXING HOLES
*: SERVICING CLEARANCE
222(8.7")
236(9.3")
Cutout dimensions for flushmount
**
**
**: If the mounting location is
subject to heavy vibration,
fasten the display unit in the
hanger perpendicularly so that
it contacts the rubber cushions.
Figure 1-17 How to mount the display unit

2-1
2. WIRING
2.1 Connections
Connect the signal and power cables, the ground wire and optional equipment as
shown in Figure 2-1.
OPTION
HDG
NMEA
DJ-1
OPTION
MARINE RADAR
TYPE
SER.NO.
DATE
COMPASS SAFE DISTANCE
STD M STEER M
EQUPMENT CLASS
FURUNO ELECTRIC CO., LTD
10.2-31.2VDC
3 GND
1
2
Signal cable connector
Connect signal cable
from antenna here.
NMEA connector
Connect navaid
here.
HDG connector
Connect heading
sensor here.
Power cable connector
Connect power
cable here.
Ground terminal
Connect ground wire between
here and ship's ground.
OPTION connector
Connect navaid,
echo sounder or
external buzzer here.
CAUTION
Tighten the boot-band
securely to ensure
watertightness.
CAUTION
For 24 volt power,
replace fuse with 5A
fuse (supplied), and
attach "5A fuse label"
to the fuse cover on
power cable.
Factory setting is 10A
for 12 VDC set.
See next page.
OPTION connector
Connect remote
display here.
*2
*3
*1
Signal cable
S03-83
Figure 2-1 Display unit, rear view
*1:The following cables are supplied with remote display.
Type Code no. Remarks
FM-C10FPD002-050 000-143-894 5m
FM-C10FPD002-100 000-143-893 10m
FM-C10FPD002-150 000-143-892 15m

2. WIRING
2-2
FM-C10FPD002-200 000-143-891 20m
FM-C10FPD002-300 000-143-890 30m
*2:The following cables are optionally supplied for heading sensor connection.
Type Code no. Remarks
FM-C6FPD001-050 000-143-897 PG-1000 (5m)
FM-C6FPD001-100 000-143-898 PG-1000 (10m)
*3:The following cables can be used for NMEA 0183 format connection.
Type Code no. Remarks
FM-C6FPD002-050 000-143-895 6P-6P(5m), Cross type
FM-C6FPD002-100 000-143-896 6P-6P(10m) , Cross type
Signal cable connection
1. Connect the signal cable to DJ-1 on the rear panel of the display unit.
Rubber cover
DJ Connector Boot-band
Cable
Display unit
DJ-1
Figure 2-2
2. Cover the connector with the rubber cover. The projection on the connector
base is inserted into the groove on the rubber cover.
Display unit
Rubber cover
Grasp
Grasp
Groove
Figure 2-3
3. Put the boot-band as shown below, and tighten it.
Display Unit
Boot-band
Figure 2-4

2. WIRING
2-3
2.2 Input/Output Data List
This radar can receive the following NMEA 0183 format data sentences from a
navigator or echosounder. Your vessel’s position in latitude and longitude, the
range and bearing to waypoint, speed, course, and depth may be seen on the
display.
Input
GLL: Geographic position – Lat/Long
BWR: Bearing and Distance to Waypoint – Rhumb line
BWC: Bearing and Distance to Waypoint – Great circle
GLC: Geographic position – Loran-C
GTD: Geographic position – Time Difference
RMA: Recommended Minimum Specific Loran-C Data
RMB: Recommended Minimum Navigation Information
RMC: Recommended Minimum Specific GPS/Transit Data
VTG: Track Made Good and Ground Speed
MTW: Water Temperature
DBT: Depth Below Transducer (Ver 1.5)
DBS: Depth Below Surface
DPT: Depth (Ver 2.0)
GGA: GPS – Rx status, L/L
VBW: Dual ground/water speed
DBK: Depth
HDM: Heading Magnet
HDG: Heading Deviation and Variation
HDT: Heading True
Output
TLL: Target Position
RSD: Radar System Data