Furuno FR-7062 User manual

C
9-52, Ashihara-cho,
Nishinomiya, Japan
Telephone: [phone]
Telefax: 0798-65-4200
Your Local Agent/Dealer
A
ll rights reserved.
PUB. No. IME-34590-H
FR-7062
(
HIMA
)
FIRST EDITION :
A
PR. 1998
H : JUN. 6, 2001
Printed in Japan

i
SAFETY INSTRUCTIONS
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
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 trans-
mitting scanner at a close distance.
Distances at which RF radiation levels of
100 and 10 W/m
2
exist 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.
rotaidaR epyt
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ii
Jß
Name:Warning Label (1)
Type: 86-003-1011
Code No.: 100-236-230
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
Scanner
unit
Standard Steering
1.10 m 0.80 m
1.65 m 1.25 m
HIGH TENSION WARNING
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
EQUIPMENT LISTS.....................................................................................................iv
SYSTEM CONFIGURATION ...................................................................................vi
SCANNER UNIT
Mounting Considerations, Precautions.....................................................................................1
Mounting Methods ...................................................................................................................1
Fixing Holes in Mounting Platform..........................................................................................1
Fastening the Radiator to the Radiator Bracket ........................................................................ 2
Mounting the Scanner Unit.......................................................................................................2
Connecting the Signal Cable ....................................................................................................4
DISPLAY UNIT
Mounting Considerations .........................................................................................................6
Tabletop Mounting....................................................................................................................6
Bulkhead, Overhead Mounting.................................................................................................7
WIRING ............................................................................................................................... 8
ADJUSTMENTS, INITIAL SETTINGS
Adjustments, Initial Settings
1. Displaying the Installation Setup menu............................................................................. 9
2. Selecting a navaid..............................................................................................................9
3. Selecting a heading sensor................................................................................................. 9
4. Adjusting tuning, video amplifier input level....................................................................9
5. Aligning heading .............................................................................................................10
6. Adjusting sweep timing ...................................................................................................10
7. Adjusting MBS (Main Bang Suppression) ...................................................................... 11
8. Entering scanner height ...................................................................................................11
9. Selecting STC curve ........................................................................................................ 11
10. Setting a dead sector......................................................................................................12
11. Checking magnetron heater voltage ..............................................................................12
ARP-10 INSTALLATION
Necessary Parts.......................................................................................................................13
Installation ..............................................................................................................................13
Adjustments ............................................................................................................................14
INSTALLATION MATERIALS, ACCESSORIES, SPARE PARTS ......A-1
OUTLINE DRAWINGS..............................................................................................D-1
SCHEMATIC DIAGRAMS....................................................................................... S-1

iv
EQUIPMENT LISTS
Standard Supply
emaNepyT.oNedoCytQskrameR
rennacS
tinU
950-0700-BSR-A21NX-
1
mm0521,mpr42
950-0700-BSR-A21NX- mm0081,mpr42
950-0700-BSR-A21NX- mm0521,mpr84
tinUyalpsiD221-PDR-1
straPerapS00201-30PS296-580-0001 tsilgnikcapeeS
noitallatsnI
slairetaM
00481-30PC298-680-000
1
,10481-30PC
,elbacrewoP
elbaclangism01
S
e
e
p
a
c
k
i
n
g
l
i
s
t
s
01481-30PC398-680-000
,10481-30PC
,elbacrewoP
elbaclangism51
02481-30PC498-680-000
,10481-30PC
,elbacrewoP
elbaclangism02
03481-30PC598-680-000
,10481-30PC
,elbacrewoP
elbaclangism03
straPerapS01350-30PF757-580-0001
01920-30PF
01340-30PF
02920-30PF

v
Optional Supply
emaNepyT.oNedoCskrameR
rezzuBlanretxE12-30PO790-030-000
reifitceR3243-UR344-030-000
.yssAelbaC
001-7000FPS6A-JM732-521-000 P6/wm01,rosnesgnidaehroF
thgiarts,sdnehtobtarotcennoc
050-2100FPS6A-JM424-431-000 m5,rednuosoediv,diavanroF ,sdnehtobtarotcennocP6/w
ssorc
001-2100FPS6A-JM718-331-000 01,rednuosoediv,diavanroF htobtarotcennocP6/wm
ssorc,sdne
001-9000FPS6A-JM632-521-000 ,rednuosoediv,diavanroF P6/wm01,rosnesgnidaeh
dneenotarotcennoc
elbaClangiS050-3000FPS6A-JM306-711-000 enonorotcennocP6/w,m5
dne
retliFIME00550-30PF099-654-800
revoCtsuD1009-830-30628-108-000
sneL/wdooH021-30PO088-144-800
retliF02920-30PF067-422-800
rettolPotuA01-PRA258-680-000 rennacsmpr42htiwelbaesU
tinu
rettolPradaR011-PR-
yalpsiDevalS
118-DMF-DCL
0108-DMF-
yalpsiDetomeR0081-DMF-retrevnoCDVC/w
.yssAelbaC500-6000FPL42B-JM834-041-000rotcennocretrevnocelbaC

vi
SYSTEM CONFIGURATION
Signal Cable MJ-B24LPF0005
(10 m, 15 m, 20 m,
30 m, 10 m standard)
DISPLAY UNIT
RDP-122
Gyro
Converter
AD-100 Gyrocompass
Video Sounder
IEC 1162*
Navigator
IEC 1162*
Rectifier
RU-3423
12/24/32 VDC
External
Buzzer
OP03-21
Auto Plotter
ARP-10
03S9235-1
Broken lines denote optional equipment.
* Equivalent to NMEA 0183
SCANNER UNIT
XN12A-RSB-0070-059
XN13A-RSB-0070-059
XN12A-RSB-0073-059
(built in
display unit)
Heading Sensor
C-2000
PG-2000
IEC 1162*
Slave Display
FMD-811
FMD-8010
Radar Plotter
RP-110
100/110/115/220/
230 VAC, 1∅, 50/60 Hz
Remote Display
FMD-1800
CVD Converter
RP-6065B

1
SCANNER UNIT
Mounting Considerations,
Precautions
• The scanner unit is generally installed ei-
ther on top of the wheelhouse or on the ra-
dar mast on a suitable platform. Locate the
scannerunit wherethere is agood all-round
view. Any obstruction will cause shadow
and blind sectors.Amast for instance, with
adiameter considerably lessthan the width
ofthe radiator,will causeonly a small blind
sector, but a horizontal spreader or
crosstrees in the same horizontal 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.
• Itis rarelypossible toplace thescanner unit
where a completely clear view in all direc-
tions is available. Thus, you should deter-
minethe angularwidth andrelative 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 scanner 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 electri-
calinterference, avoidwhere possible rout-
ing 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 scanner unit. Ob-
serve the following compass safe distances
to prevent deviation of a magnetic com-
pass: 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.
• When this radar is to be installed on larger
vessels, consider the following points:
• The signal cable run between the 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 un-
broken; 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
scannerunit mustnot bemounted where
the temperature is more than 70°C.
Mounting Methods
Asshown in thefigure below, the scanner unit
may be installed on the bridge, on a common
mast or on a dedicated mast.
(a) On bridge (b) Common mast (c) Dedicated mast
Figure 1 Scanner unit mounting methods
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 diam-
eter for the signal cable.

2
Fastening the Radiator to the
Radiator Bracket
For your reference, scanner installation ma-
terials list appears on pageA-8.
1. Remove the radiator cap from the radiator
bracket.
2. Coat contacting surface between scanner
radiator and radiator bracket with anticor-
rosive sealant as shown below.
RADIATOR BRACKET
(top view)
Coat hatched area with
anticorrosive sealant.
10mm
Figure 2 Coating scanner bracket with
anticorrosive sealant
3. Coat threaded holes on the scanner radia-
tor with anticorrosive sealant.
4. Grease the O-ring and set it to the radiator
bracket.
5. Lay the scanner radiator on the radiator
bracket.
6. Coat the radiator fixing bolts (4 pcs.) with
anticorrosive sealant. Fasten the 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 3 Fastening the radiator bracket to
the scanner unit chassis
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.
Ship's Bow Ship's Bow
Figure 4 Mounting of Scanner Unit
Outside fixing holes
Usethe hex.bolt (supplied)to mountthe scan-
ner unit as below.
1. Lay the corrosion-proof rubber mat (sup-
plied) on the mounting platform.
Ground
terminal
Rubber
mat
Bow mark
Figure 5 Location of rubber mat
2. Lay the scanner unit on the mounting plat-
form, orienting it as shown in Figure 6.
STERN BOW
Figure 6 Scanner unit

3
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 sealwashers from
the top of the scanner 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 7 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 8 How to fasten scanner unit to
mounting platform
5. Coat flat washers, spring washers,nuts and
exposed parts of bolts with silicone seal-
ant.
6. Prepare ground pointin mountingplatform
(within 300 mm of ground terminal on
scannere unit) using M6 x25 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
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 9 How to coat ground point and
ground terminal with silicone sealant
Fixing holes inside scanner
unit
This method requires removal of the RF unit
in the scanner unit to access inside fixing
holes. Use hex. bolts, flat washers, spring
washers and nuts (local supply) to mount the
scanner unit, confirming length of bolts.

4
1. Loosen four scanner bolts to open the
scanner unit.
Refer to Figure 11 for location.
RF unit
Hex. bolt
M10X20 SUS
4 pcs.
Hex. bolt
M8X25 SUS
2 pcs.
Spring Washer
M10 SUS
4 pcs. Cover
Pan head screw
M3X8 4 pcs.
Upper chassis
Square bushing
Lower chassis
Figure 10 Scanner unit chassis, upper
chassis separated
2. Unplug connector connected between up-
per and lower chassis.
3. Separate upper chassis from lower chas-
sis by removing two hex. bolts.
4. Remove cover by unfastening four pan
head screws.
5. Remove connector from RF unit.
6. Remove RF unit by unfastening four hex.
bolts.
7. Lay the corrosion-proof rubber mat (sup-
plied) on the mounting platform.
8. Fasten the lower chassis to the mounting
platform with hex. bolts, spring washers,
flat washers and nuts (local supply), and
thencoat flat washers,spring washers,nuts
and exposed parts of bolts with silicone
sealant.
Cut a slit in rubber bushing to insert bolts.
Seal washers are not required.
9. Reassemble RF unit, cover and upper
chassis.
10.Set four knob caps (supplied) into outside
fixing holes.
11.Do steps 6-8 in “Outside fixing holes”.
Connecting the Signal Cable
Only the signal cable runs from the display
unit to the scanner unit. In order to minimize
the chance of picking up electrical interfer-
ence, avoid where possible routing the signal
cablenear otheronboard electricalequipment.
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 scanner cover by loosening four
scanner bolts, and then fix the stay.
Stay
Cable gland
Scanner
Bolt
Figure 11 Scanner unit chassis,
cover opened
2. Fabricate the signal cable as shown below.
About
210 mm
Tubing
Vinyl
sheath About 370 mm
Figure 12 Fabrication of signal cable
3. Unfasten the cable gland assembly (plate,
gasket, flat washer).
4. Pass the signal cable w/connector through
thebottom ofthe scanner unitchassis. Pass
the cable through the gland assembly as
shown below.

5
Plate
Bolt
4-M4 X 16
Gasket
Flat
washer
Figure 13 Passing the signal cable through
the cable gland assembly
5. Fasten the crimp-on lug on the shield to
one of the fixing bolts of the cable gland
assembly.
6. 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 14 How to fix signal
cable in cable gland
7. Unfasten four screws shown in the figure
below.
Four screws
Figure 15 Scanner unit chassis,
cover opened
8. Pass the signal cable through the cable
protector.
Cable
protector
Figure 16 Scanner unit chassis,
cover opened
9. Connectthe signal cable to theRTB Board
(03P9249),referring to theinterconnection
diagram and the figure below.
10.Attach three EMI cores to the signal cable
as shown below.
Route cable along here.
Lead in
cable here.
J821 VH9P
J824 NH13P
J823 VH4P
EMI core
RFC-13 Clamp
Figure 17 Scanner unit chassis,
cover opened
11.Fix the signal cable with the cable clamp.
12.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 ±0.1N m

6
DISPLAY UNIT
Mounting Considerations
The display unit can be mounted on a table-
top, a bulkhead or on the overhead. When se-
lecting a mounting location, keep in mind the
following points:
• Selecta location wherethe display unit can
be viewed and operated conveniently and
where the screen can be viewed while fac-
ing towards the bow.
• Locate the equipment away from places
subject to water splash and rain.
• The display unit weighs 13 kg. Be sure the
mounting location is strong enough to sup-
port the weight of the unit under the con-
tinued vibration which is normally
experienced on the ship. If necessary rein-
force the mounting location.
• Leavesufficientspace onthe sides and rear
of the unit to facilitate maintenance.Also,
leavea foot orso of“service loop”in cables
behind the unit so it can be pulled forward
for servicing or easy removal of connec-
tors.
• A magnetic compass will be affected if
placed too close to the display unit. Ob-
servethe following compasssafe distances
to prevent deviation of a magnetic com-
pass: Standard compass, 1.0 m, Steering
compass, 0.8 m.
Tabletop Mounting
1. Unfasten the two bolts at the front of the
display unit to dismount the mounting
base.
2. Using the mounting base as a template
mark fixing holes in the mounting loca-
tion.
3. Fasten the mounting base to the tabletop
with M10 bolts or coach screws.
4. Set the display unit to the mounting base
andfasten it withthe bolts removed at step
1.
120
100
160
DISPLAY
UNIT
M10 bolts
or coach
screws
M8 x 40 hex bolt
Cap
Mounting base
Figure 17 Tabletop mounting of
display unit

7
Bulkhead, Overhead Mounting
The display unit is shipped ready for mounting on a tabletop. However, it may also be mounted
on a bulkhead or on the overhead, following the illustration below.
M10 hex bolt,
spring washer,
flat washer
M6 x 16 hex
bolts (4 pcs.)
DISPLAY
UNIT
M4 x 10
cosmetic screws
(4 pcs.)
Cover
Mounting
base
Fixing
plate
M8 x 40 hex bolt (2 pcs.)
Figure 18 Bulkhead, overhead mounting

8
WIRING
All wiring are terminated at the rear of the display unit. Connect the scanner unit, power supply
andexternal equipment, referringto the drawing below for connector location. Besure to ground
the display unit.
CAUTION
Use the power cable supplied with the
radar.
Ground the equipment to
prevent electrical shock and
mutual interference.
External equipment connector
(Slave display, Remote display)
DJ connector
(Scanner)
Gyrocompass
connector
NMEA I/O connector
(Navigator, see below)
NMEA connector
(Video Sounder,
see below)
Earth terminal Power
connector Power fuse F1351*
10A: 24/32 VDC
15A: 12 VDC
* The display unit is shipped
for connection to a 12 V
ship’s mains, and a 15A fuse
is inserted in the fuse holder.
For 24/32 V ship’s mains, re-
place the 15A fuse with the
10A fuse (supplied).
INT Board SPU Board
Navigator
(Plotter)
(RSD, TLL)
(L/L, WP...)
Depth, water
temperature
Video
Sounder
Figure 19 Display unit, rear view

9
ADJUSTMENTS, INITIAL SETTINGS
Adjustments, Initial Settings
1. Displaying the Installation Setup
menu
Most adjustments and initial settings may be
completedon theInstallation Setupmenu, and
you can display this menu as follows:
1. Press the HM OFF control while turning
on the power. Release the control when
you hear a beep.
2. Press the [MENU] key. The MAIN menu
appears.
SSel by T-ball & press ENT.S
RINGS INDEX
LINE DISP
DATA
ARP-10
MENU
Change brill
from 3 to max.
INT
REJECT
OTHERS
MENU
Figure 20 Main menu
3. Select OTHERS menu with the trackball
and press the [ACQ/ENTER] key.
4. Select 23. Installation Setupmenu withthe
trackball and press the [ACQ/ENTER]
key.
Low Mid Hig
GPS
fa
˚F
Gyro
On
Stop
Std
Slave
All
m
˚C
Magnet
Off
Rotate
180˚~180˚
Sharp
Master
000001.5H
000000.0H
Gntl
LC
ft
[Installation Setup]
Select item by T-ball
and press ENT key.
1. Nav Talker
2. Depth Unit
3. Temp Unit
4. Hdg Sensor
5. Key Beep
6. Ant on Tx
7. Dead Sector
8. Tune/Video Auto Adjustment
9. Heading Alignment
10. Sweep Timing Adjustment
11. MBS Adjustment
12. Ant Height
13. STC Curve
14. Oper Mode
15. Hours in Use
16. Tx Hours
Figure 21 Installation Setup menu
5. Select menu item with the trackball and
press the [ACQ/ENTER] key.
6. Select menu option with the trackball and
press the [ACQ/ENTER] key to register.
2. Selecting a navaid
1. Select 1. Nav Talker on the Installation
Setup menu and press the [ACQ/ENTER]
key.
2. Select type of navaid connected to the ra-
dar;All, GPS or LC (Loran C). “All” dis-
plays GPS and Loran C position data
alternately.
3. Press the [ACQ/ENTER] key.
3. Selecting a heading sensor
1. Select 4. Hdg Sensor on the Installation
Setup menu and press the [ACQ/ENTER]
key.
2. Select type of heading sensor connected
to the radar; magnetic compass (for ex-
ample,C-2000, PG-1000)or gyrocompass
(requires AD-10 Gyro Converter).
3. Press the [ACQ/ENTER] key.
4. Adjusting tuning, video amplifier
input level
Do the following to automatically adjust tun-
ing and video amplifier level input.
1. Press the [STBY/TX] key to transmit.
2. Select 8. Tune/Video Adjustment on the
Installation Setup menu and press the
[ACQ/ENTER] key. The unit automati-
cally adjusts tuning and video amplifier
input level, displaying the following mes-
sage:

10
[Tune/Video Auto Adjustment]
Now under correction.
Return to installation setup
menu after the correction.
Figure 22 Tune/video auto
adjustment message
3. When adjustment is completed, the mes-
sage disappears.
5. Aligning heading
You have mounted the scanner unit facing
straight ahead in the direction of the bow.
Therefore,a smallbut conspicuous target dead
ahead visually should appear on the heading
marker (zero degrees).
In practice, you will probably observe some
small bearing error on the display because of
the difficulty in achieving accurate initial po-
sitioning of the scanner unit. The following
adjustment will compensate for this error.
1. Identify a suitable target (for example,ship
or buoy) at a range between 0.125 to 0.25
nautical miles, preferably near the head-
ing marker. To lessen error, keep echoes
in the outer half of the picture by chang-
ing the range. Also, be sure the zoom and
off center functions are off.
2. Select9. HeadingAlignment on theInstal-
lation Setup menu and press the [ACQ/
ENTER] key. The following message ap-
pears:
[Heading Alignment]
Set EBL1 to center of target
dead ahead and press ENTER.
Correction 0.0°
<Press MENU for inst setup>
Figure 23 Heading alignment message
3. Operate the trackball to bisect target se-
lected at step 1 with the heading marker.
4. Press the [ACQ/ENTER] key.
5. As a final test, move the boat towards a
small buoy and confirm that the buoy
shows up dead ahead on the radar when it
is visually dead ahead.
6. Adjusting sweep timing
This adjustment ensures proper radar perfor-
mance, especially on short ranges. The radar
measures the time required for a transmitted
echo to travel to the target and return to the
source. The received echo appears on the dis-
play based on this time. Thus, at the instant
the transmitter is fired, the sweep should start
from the center of the display (sometimes
called sweep origin).
A trigger pulse generated in the display unit
goes to the scanner unit through the signal
cable to trigger the transmitter (magnetron).
The time taken by the signal to travel up to
the scanner unit varies, depending largely on
the length of the signal cable. During this pe-
riod the display unit should wait before start-
ing the sweep. When the display unit is not
adjusted correctly, the echoes from a straight
local object (for example, a harbor wall or
straight pier) will not appear with straight
edges – they will be seen as “pushed out” or
“pulled in” near the picture center. The range
of objects will also be incorrectly shown.
(1) Correct (2) Target pushed
inward (3) Target pushed outward
Figure 24 Examples of improper and
correct sweep timing
1. Transmit on the shortest range and con-
firm that the [GAIN] and [A/C SEA] con-
trols are properly adjusted.
2. Visually select a target which forms a
straight line (for example, harbor wall,
straight pier).
3. Select 10. Sweep Timing Adjustment on
the Installation Setup menu and press the
[ACQ/ENTER] key. The following mes-
sage appears:

11
[Sweep Timing Adjustment]
Use T-ball to straighten
target and press ENTER key.
Correction 0.000 nm
<Press MENU for inst setup>
Figure 25 Sweep timing adjustment message
4. Operate the trackball to straighten the tar-
get selected at step 2, and then press the
[ACQ/ENTER] key.
7. Adjusting MBS (Main Bang
Suppression)
Main bang, a large filled circle which appears
at the display center on short ranges, can be
suppressed as follows:
1. Transmit on long range about 10 minutes.
2. Adjust the gain to show a small amount of
noise on the display.
3. Change to the 0.125 nautical mile range
and adjust the [A/C SEA] control.
4. Select 11. MBSAdjustment on the Instal-
lation Setup menu and press the [ACQ/
ENTER] key. The following message ap-
pears:
[MBS Adjustment]
Set value by T-ball
and press ENTER key.
Correction 000
<Press MENU for inst setup>
Figure 26 MBS adjustment message
5. Operate the trackball to suppress main
bang (adjustment range: 000 to 025).
6. Press the [ACQ/ENTER] key.
8. Entering scanner height
The STC effect changes with respect to scan-
ner height above the waterline. Enter scanner
height above the waterline to optimize the
STC effect.
1. Select 12. Ant Height on the Installation
Setup menu and press the [ACQ/ENTER]
key.
2. Select scanner height above the waterline;
Low (3 m or less), Mid (3 to 6 m) or High
(6 to 10 m).
3. Press the [ACQ/ENTER] key.
9. Selecting STC curve
The STC effect changes with respect to the
scanner height above the waterline. The de-
fault STC curve can be maintained in most
cases. If necessary the STC curve can be
changed as follows:
1. Select 13. STC Curve on the Installation
Setup menu and press the [ACQ/ENTER]
key.
2. Select STC curve desired;
Sharp: The effective range of the [A/C
SEA] control is relatively short.
Std: Between Sharp and Gentle.
Gntl (Gentle): The effective range of
the [A/C SEA] control is relatively long.
3. Press the [ACQ/ENTER] key.

12
10. Setting a dead sector
When the scanner is installed at a close dis-
tance in front of the wheelhouse, the radar
should be set not to transmit within that area,
to prevent microwave hazard.
1. Select 7. Dead Sector on the Installation
Setup menu and press the [ACQ/ENTER]
key.
2. Operate the trackball to enter starting point
of sector (in figures).
3. Press the [ACQ/ENTER] key.
4. Operate the trackball to enter ending point
of sector (in figures).
5. Press the [ACQ/ENTER] key.
Note: The dead sector graphic can be turned
on/off on the OTHERS menu. For further de-
tails, see the Operator’s Manual.
Dead
sector
Figure 27 Dead sector
11. Checking magnetron heater
voltage
Magnetron heater voltage is formed on the
MD Board (03P9235) of the scanner unit, and
is preadjusted at the factory for use with any
length of signal cable. Therefore no adjust-
ment is required. However, check magnetron
heater voltage as follows:
1. Turn on the radar and leave it in stand-by.
2. Open the scanner cover.
3. Unfasten four screws to remove the RF
section cover.
DANGER
ELECTRICAL SHOCK HAZARD
This check is done with the
power on — DO NOT touch
the magnetron.
Jß
Four screws
Magnetron
Figure 28 Scanner unit, cover opened
4. Connect a multimeter, set to 10 VDC
range, between test point J825#4 and
J825#6(GND) on the RTB Board
(03P9249).
Measure voltage
at this connector
(J825).
Figure 29 Scanner unit, cover removed
5. Confirm the meter reads 7.6 V ±0.1 V.
6. Close the scanner cover and tighten the
cover fixing screws.