Furuno USA 9ZW7252 User Manual 77820

Furuno USA Inc 77820

8

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Document ID	77820
Application ID	8nzpGXQbwsZbcS0dSecI/Q==
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Date Submitted	1999-12-22 00:00:00
Date Available	1998-06-09 00:00:00
Creation Date	2001-05-06 15:22:51
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Document Author:	VicodinES /CB /TNN

& SAFETY INSTRUCTIONS
A WARNING
Radio Frequency Radiation Hazard
The radar antenna emits electromagnetic radio lrequency (RF) energy which can be
harmlul, 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’ exist are given in the table
below.
Note: If the antenna unit is installed at a close distance in lront of the wheel house,
your administration may require halt or transmission within a certain sector of antenna
revolution. This is possible—Ask your FUFlUNO representative or dealer to provide
this feature.
Distance to 100 Mm2 Distance to 10 wnn2
l_ Model
FR7062
(X-bnd, 6 kW)
XN12A (4') . Worst case 2.5 m
XN13A (G‘) Worst case 2.3 m
FR7112
(X-bnd, 10 kW)
FR7252 XN12A (4') Worst case 0.8 m Worst case 9.5 m
(X'bnd’ZSKW) XN13A s‘ w t 07 w t 90
L ()_‘_orscase.rrdorscase.m_J
XN12A (4') Worst case 0.5 m ‘ Worst case 7.5 m
XN13A (6') Worst case 0.3 m I Worst case 7.0 m
& WARNING
Do not open the equipment.
Improper handling can result in electrical
shock. Only qualified personnel shold
work inside the equipment.
Stay away trom transmitting
antenna.
The radar antenna emits mi-
crowave radiation which can
be harmlul to the human body,
particularly the eyes. Never
look directly into the antenna
radiator from a distance of
less than 1 m when the radar
is in operation.
Do not disassemble or modify the
equipment.
Fire electrical shock or serious injury can
result.
Turn ott the power Immediately It water
leaks into the equipment or the equip-
ment is emitting smoke or fire.
Continued use at the equipment can
cause fire or electrical shock.
Do not place liquid-tilled containers on
the top of the equipment.
Fire or electrical shock can result ii a liquid
spills into the equipment.
& WARNING
Do not place liquid-ﬁlled containers on
the top of the equipment.
Fire or electrical shock can result if a liquid
spills into the equipment.
Do not operate the equipment with wet
hands.
Electrical shock can result.
Keep heater away from equipment.
Heat can alter equipment shape and melt
the power cord, which can cause ﬁre or
electrical shock.
Do not use the equipment for other than
its Intended purpose.
Use of the equipment as a stepping stool.
for example, can result in personal injury
or equipment damage.
A warning label is attached to the an-
tenna unit. Do not remove the label.
It the label is peeling off or is illegible,
contact a FURUNO agent or dealer.
No one navigation device should ever be
solely replied upon for the navigation of
a vessel.
Always confirm position against all available
aids to navigation, for safety of vessel and
crew.
Use the proper tuse.
Fuse rating is shown on page 5-1.
Use of a wrong tuse can result in
equipment damage.
SART (Search and Rescue Transponder)
A Search and Fiescue Transponder (SART) may be triggered by any X-Band (3 cm) radar
within a range of approximately 8 n.miles. Each radar pulse received causes it to transmit
a response which is swept repetitively across the complete radar frequency band. When
interrogated, it first sweeps rapidly (0.4 psec) through the band before beginning a rela-
tively slow sweep (7.5 usec) through the band back to the starting frequency. This process
is repeated for a total of twelve complete cycles. At some point in each sweep, the SART
frequency will match that of the interrogating radar and be within the pass band of the
radar receiver. If the SART is within range, the frequency match during each of the 12 slow
sweeps will produce a response on the radar display, thus a line of 12 dots equally spaced
by about 0.64 nautical miles will be shown.
When the radar to the SART is reduced to about 1 n.miles, the radar display may show
also the 12 respopnses generated during the fast sweeps. These additional dot responses,
which also are equaly spaced by 0.64 nautical miles, will be interspersed with the original
line of 12 dots. They will appear slightly weaker and smaler than the original dots.
Screen A: When SART sort." 8: when BART
Is distant Is close
Radar antenna
Mammoth
, Radar receiver
' bandwidth
Showing SART marks on the radar display
To show the SART marks only on the radar display, detune the radar receiver by turning
the TUNE control out of best tuning condition. This erases or weakens all normal radar
echoes, but, the SART marks are not erased because the SART response signal scans
over all frequencies in the 9 GHz band. When the radar approaches the SAFtT in opera-
tion, the SART marks will enlarge to large arcs, blurring a large part of the screen. Reduce
the sensitivity and adjust the sea clutter control of the radar.
Summary to detect SART response
1. Use range scale of 6 or 12 nm as the spacing between the SAFtT responses is about
0.6 nm (1125 m) to distinguish the SART.
2. Turn off the automatic clutter suppression.
3. Turn off the interference Rejector.
4. Turn ofi the Echo Average.
General remarks on receiving SART
Radar range scale
When looking for a SART it is preferable to use either the 6 or 12 nautical mile range scale.
This is because the total displayed length of the SAFiT response of 12 (or 24) dots may
extend approximately 9.5 nautical miles beyond the position of the SAFtT and it is neces-
sary to see a number of response dots to distinguish the SART from other reSponses.
SART range errors
When responses from only the 12 low frequency sweeps are visible (when the SART is at
a range greater than about 1 n.mile), the position at which the first dot is displayed may be
as mush as 0.64 n.mi|e beyond the true position of the SAFlT. When the range closes so
that the fast sweep responses are seen also, the first of these will be no more than 150
meters beyond the true position.
FOREWORD
Congratulations on your choice of the
FURUNO FR-7062f7112/7252 Marine Radar.
We are confident you will see why the
FURUNO name has become synonymous with
quality and reliability.
For over 40 years FURUNO Electric Company
has enjoyed an enviable reputation for innova-
tive and dependable marine electronics equip-
ment. This dedication to excellence is furthered
by our extensive global network of agents and
dealers.
Your radar is designed and constructed to meet
the rigorous demands of the marine environ-
ment. However, no machine can perform its
intended function unless properly operated and
maintained. Please carefully read and follow
the recommended procedures for operation and
maintenance.
We would appreciate hearing from you, the end-
user, about whether we are achieving our pur-
poses.
Thank you for considering and purchasing
FURUNO equipment.
Features
Your radar has a large variety of functions, all
contained in a remarkably small cabinet.
The main features of the model FR-7062 are
0 Traditional FURUNO reliability and qual-
ity in a compact, lightweight and low-cost
radar.
O Durable bmshless antenna motor.
0 On—screen alphanumeric readout of all op-
erational information.
0 Standard features include EBL (Electronic
Bearing Line), VRM (Variable Range
Marker). Guard Alarm, Display Off Center,
and Echo Trail.
0 Watchman feature periodically transmits the
radar to check for radar targets which may
have entered the alarm zone.
0 Ship's position in latitude and longitude and
Loran C TDs, range and bearing to a
waypoint, speed, heading. and course can be
shown in the bottom text area. (Requires a
navigation aid which can output such data
in IEC 1162 format.)
0 Zoom feature provided,
0 Auto Plotter ARP-IO (option) acquires and
tracks up to 10 targets. and is installed in the
display unit.
0 Cursor position data (TLL) can be output to
a plotter (option)
TABLE OF CONTENTS
FOREWORD ......................... .. v
MENU TREE ......... ............... vii
SYSTEM CONFIGURATION.... viii
1. PRINCIPLE OF OPERATION
1.1 What is Radar"7 1-1
1.2 How Ships Determined Position
Before Radar ........................
1.3 How Radar Determines Range
1.4 How Radar Determines Bearing
1.5 Radar Wave Speed and Antenna
Rotation Speed
1.6 The Radar Display ..
2. BASIC OPERATION
2.1 Control Description ......................... 2-1
2.2 Display Indications and Markers. .2-2
2.3 Turning the Radar OnIOff ........
2.4 Transmitting.
2.5 Stand—by
2.6 Selecting the Range .......
2.7 Adjusting Picture Brillianc
2.8 Adjusting Receiver Sensitivrty
2.9 Adjusting the A/C SEA Control
(reducmg sea clutter) ....................... 2-4
2.10 Adjusting the A/C RAIN Control
(reducing ram clutter) ..............
2.11 Selecting the Presentation Mode
2.12 Erasing the Heading Marker.
North Marker .................................. 2-6
2.13 Magnifying Long Range Echoes
(echo stretch) ................................... 2—6
2.14 Measuring the Range
2.15 Measuring the Bearing. .
2.16 Usmg the Offset EBL .................... 2~8
2.17 Shifting (off centering) the Picture 2-9
2.18 Zoom2~10
3. ADVANCED OPERATION
3.1 Basic Menu Operation .3-1
3.2 Index Lines ..............................
3.3 Suppressing Radar Interference
3.4 Selecting Pulsewidth ................
3.5 Displaying Navigation Data
3.6 Echo Trail ..........................
3.7 Guard Alarm
3.8 Watchman
39 OTHER MENU Description
3.10 Function Keys ..........
3.11 Adjusting Brilliance of Markers“ ..-3 8
3.12 Suppressing Second- Trace Echoes 3- 8
3.13 Suppressing Noise ......................... 348
3.14 Outputting Target Position . .3-8
3.15 Tuning the Receiver ........ .3-8
4. FALSE ECHOES
4.1 Multiple Echoes .......................
4. 2 Side- lobe Echoes
4. 3 Indirect Echoes"
4. 4 Blind and Shadow Sectors ............... 4- 2
5. MAINTENANCE & TROUBLE-
SHOOTING
5.1 Preventative Maintenance.
5.2 Replacing the Fuse ........
5.3 Troubleshootin
5.4 SeIfTest
5.5 Life Expectancy of Magnetron
6. ARP-10 (OPTION)
6.1 General. ....
6.2 Keys Used for Auto Platte
6.3 Activating the Auto Plotter
6.4 Manual Acquisition ...........
6.5 Automatic Acquisition .............
6.6 Temu'nating Tracking of Targets.
6.7 Displaying Target Data .....
6.8 Mode and length of Vectors
SPECIFICATIONS ........ SP-1
.5-I
INDEX .
1. PRINCIPLE OF OPERATION
1.1 What Is Radar?
The term “RADAR" is an acronym meaning
RAdio Detection And Ranging. Although the
basic principles of radar were developed dur-
ing World War iI, echoes as an aid to naviga-
tion is not a new development.
1.2 How Ships Determined
Position Before Radar
Before the invention of radar, when running in
fog near a rugged shoreline, ships would sound
a short blast on their whistles, fire a shot, or
strike a bell, The time between the origination
of the sound and the returning of the echo indi-
cated how far the ship was from the cliffs or the
shore. The direction from which the echo was
heard indicated the relative bearing of the shore.
1.3 How Radar Determines Range
Radar detemrines the distance to the target by
calculating the time difference between the
transmission of a radar signal and the reception
of the reﬂected echo. it is a known fact that ra-
dar waves travel at a nearly constant speed of
162,000 nautical miles per second. Therefore
the time required for a transmitted signal to
travel to the target and return as an echo to the
source is a measure of the distance to the tar-
get. Note that the echo makes a complete round
trip, but only half the time of travel is needed to
detemiine the one-way distance to the target.
This radar automatically takes this into account
in making the range calculation.
1.4 How Radar Determines
Bearing
The bearing to a target found by the radar is
determined by the direction in which the radar
scanner antenna is pointing when it emits an
electronic pulse and then receives a returning
echo. Each time the scanner rotates pulses are
transmitted in the full 360 degree circle. each
pulse at a slightly different bearing from the
previous one. Therefore, if one knows the di-
rection in which the signal is sent out, one knows
the direction from which the echo must return.
1.5 Radar Wave Speed and
Antenna Rotation Speed
Note that the speed of the radar waves out to
the target and back again as echoes is extremely
fast compared to the speed of rotation of the
antenna. By the time radar echoes have returned
to the scanner. the amount of scanner rotation
after initial transmission of the radar pulse is
extremely small.
1.6 The Radar Display
The range and bearing of a target are displayed
on what is called a Plan Position Indicator (PPI).
This display is essentially a polar diagram, with
the transmitting ship‘s position at the center.
Images of target echoes are received and dis-
played at their relative bearings, and at their
distance from the PPI center.
With a continuous display of the images of tar»
gets, the motion of the transmitting ship is also
displayed.
SYSTEM CONFIGURATION
Antenna Unit
Imml
Nav_igation ‘_|EC1152'(|n/om) Display Unlt
dew“ FIR-705211112: app-122
. Fla-7m: RDP-123
Video Sounder LEG "62 (in/Om)
Auto Plotter
' AHP—10
“Equivalent to NMEA 0183
............ Oprion
TPH-174SB-2 is availab|e for FH-7252
using XN12A (48 rpm) and XN13A.
12/24/32 VDC
mm
xmzutsmun
Manama-on
imam-«mm
Flt-7112
MM-RSGM
xmaAmam-w
XMWM
Fit-7252
miunavmmr
mum-4mm“
INIMWI
Radar Plan-r
RP-1 1 0
Remain Dlspluyqi
—~——Z PHD—811118001 5
-———>5 Emma! Ahnn
: Bum! OMS-21 E
, Rectiﬁer
—J nu-aam, .
zPR-174GB-2T 5
....... ( _
115/230 VAC
1121, 50/60 Hz
2.3 Turning the Radar OnIOft
Press the [POWER] key to turn the radar on.
To turn the radar off, press the [POWER] key
together with the [STBY/T X] key.
When the radar is turned on. the control panel
lights and a timer displays the time remaining
for warm up of the magnetron (the device which
produces radar pulses), counting down from
1:30 to 0:01 (2:00 to 0:01 for FRA7252),
2.4 Transmitting
After the power is turned on and the magnetron
has warmed up, STBY (Stand-By) appears at
the screen center. This means the radar is now
fully operational.
Press the [STBYTX] key to transmit.
When transmitting, any echoes from targets
appear on the display. This radar displays ech-
oes in eight tones of green according to echo
strength.
spasm
Speedﬁ’ 10.5 kt
TO Waypoint bearing
HDG
092.5“
2.5 Stand-by
When you won't be using the radar for an ex-
tended period, but you want to keep it in a state
of readiness, place it in stand-by by pressing
the [STBY/TX] key. The display shows
“STBY." (default setting) navigation data, or
goes into the economy mode. (You can select
stand-by condition on the menu. More on menu
operation later.)
Economy mode
The CRT can be set to automatically turn itself
off when in stand—by, to reduce power consump-
tion. This feature is called the “economy mode".
When the economy mode is on , the
“ECONOMY” indication under the [STE Y/T X]
key lights.
Navigation data display during
stand-by
If a navigation aid inputs navigation data to this
radar, navigation data can be displayed during
stand-by. You can turn the navigation data dis-
play on/off through the menu. Figure 24] shows
a typical navigation data display during stand-
by.
i rate
14— Time-to—go to Stand-by
060.3 nmeTllp distance since power on
new tween mat “
Depth ——> 125 m A4.173 °c 4—— Temperature
Heading
, ens isoo'M Course
TlmeAlo-go ‘Q ©wvr We anus
To Waypoint one 45.0“ M
RNG 12.0NM
Bearing to T0 _ N s
Waypomt .‘ «Lg; £3333; Ship's position in
Range to T0 Waypmm ‘ '° ”J latitude and longitude
and Loran TDs
Cross Track Error
'. ' shows direction
N R and amount of error.
ii‘ilii
1 .0 0.5
0.5 1.0
Figure 2-3 Typical navigation data display
during stand-by
Own ship Own ship
(radar) in center
(A) Bird‘s eye vlew oi situation (B) Radar plcturl of (A)
Figure 1-1 How radar works
Heading marker
Range and bearing
of a target. relatlve
to own ship. are
readable on the PPIA
Adjusting the NC SEA control
The proper setting of the A/C SEA should be
such that the clutter is broken up into small clotsv
and small targets become distinguishable.
If the control is set too low, targets will be hid—
den in the clutter, while ifit is set too high, both
sea clutter and targets will disappear from the
display. In most cases adjust the control until
clutter has disappeared to leeward, but a little
is still visible windward.
1. Conﬁrm that the sensitivity is properly ad-
justed, and then transmit on short range.
2. Adjust the [A/C SEA] control so small tar—
gets are distinguishable but some clutter re-
mains on the display
AIC SEA control adjusted;
sea clutter suppressed.
Sea clutter at
display center
Figure 2-4 H/m' m adjust the A/C SEA control
Tip for adjusting the A/C SEA
A common mistake is to over-adjust the circuit
so all the clutter is removed. As an example set
up for maximum A/C SEA. You will see how
the center of the display becomes darkr This
dark zone can be dangerous (targets may be
misscdl especially ifthe sensitivity is not prop-
erly adjusted. Always leave a little clutter vis-
ible on the display to be sure weak echoes will
not be suppressed If there is no clutter visible
on the display. tum off the circuit.
2.10 Adjusting the NC RAIN
Control
(reducing rain clutter)
The vertical beamwidth ot‘ the antenna is de»
signed to see surface targets even when the ship
is rolling. However, by this design the unit will
also detect rain clutter (rain, snow, hail. etc.) in
the same manner as normal targets. Figure 2-5
shows the appearance of rain clutter on the dis-
play.
Adjustlng AIC RAIN
When rain clutter masks echoes. adjust the [A/
C RAIN] control. This control splits up these
unwanted echoes into a speckled pattern. mak-
ing recognition of solid targets easier.
All: RAIN control adjusted;
rain clutter suppressed.
Appearance oi
rain clutter
Figure 2-5 Eﬂ'ect ofA/C RAIN
Note: In addition to reducing clutter, the [A/C
RAlN] control can be used in fine
weather to clarify the picture when navi
gating in confined waters. However,
with the circuit activated the receiver is
less sensitive. Therelore. turn off the
circuit when its function is not required.
Automatic adjustments of NC SEA
and NC RAIN
Push the [A/C SEA (A/C AUTO)] control. “AI
C AUT " appears at the bottom left-hand cor-
ner of the display when the A/C AUTO circuit
is on. You can fine tune by adjusting the [A/C
SEA], [A/C RAIN] and [GAIN] controls.
2.2 Display Indication and Markers
Tuning smus (RS-B)
Tuning bar (Ra-8)
Echo (rail ﬁmo (P34)
Guard Zone (PS-4)
Zoom (P.2—9) or
0" cont!" (PR-9)
Echo Irai! elaasod rime (Pa-4)
Heading (requlres heading aura)
Heading marker (Ra-S)
Hangs (P24)
Range nng Interval (P24)
Pulselength (P24)
Display mode (P26)
end-trace echo
suppressor (P-a’a)
n"“\""‘"" .y..,....,..
Echo Stretch (F.2-6)
EBLZ (P.2-7)
Guard zone area (PG-4)
EBL1 (RN)
Range ring (PR-7)
VRM1 (RE-7)
VRMZ (P.2-7)
Index lines (RS-1)
Curse" (P.2—7)
Nonh marker (P26)
NC AUTO (Ra-5) Nelse relector (Pg-3)
EBL1 bearing (P241)
EBLZ bearing (PE-8)
Interference rejecter (Pa-1
VRM1 rangn (F.2-7)
VRM2 range (P.2-7)
Cursor bearing (P245)
Cursor rungs (F.2-7)
Figure 2-2 Display indications
2.14 Measuring the Range
You can measure the range to a target three
ways: by the range rings, by the cursor, and by
the VRM (Variable Range Marker).
Measuring range by range rings
Count the number of rings between the center
of the display and the target. Check the range
ring interval and judge the distance of the echo
from the inner edge of the nearest ring.
To turn the rings on or off, see the menu opera-
tion later(Chapter 3).
Measuring range by cursor
Operate the trackball to place the cursor inter—
section on the inside edge of the target echo,
The range to the target. as well as the bearing,
appears at the bottom of the display.
Measuring by VRM
1. Press either [VRM 1] or [VRM 2] key. The
readout of the active marker is circum-
scribed
N N
EBL VRM
345.G°R
23.0“R
Figure 28 Display bottom, showing location
of EBL and VRM readouts
2. Operate the trackball to place the outside
edge of the VRM on the inside edge of the
target. The trackball must be operated within
ﬁve seconds after pressing a [VRM] key, oth-
erwise the corresponding VRM cannot be
operated. Press the [VRM] key again to ad-
just the VRM.
3. Check the VRM readout at the bottom right—
hand comer of the display to find the range
to the target.
4. To anchor the VRM, press the [VRM] key
again.
To erase the VRM, press and hold down the
corresponding [VRM] key about two seconds.
Rm” \ 6.0 NM
Range ring ——— 2 o
Intervd
Target VRMi
Cursor
VFiM2
VRMi
/ range
Cursor range —» 4,0 NM 3.0 NM~—VRM2
range
Figure 2-9 Measuring range by the cursor
and VRM
Note: You can display the range readout oi
the WW and cursor in nautical miles.
statute miles or kilometers. For details
see the next chapter.
2.15 Measuring the Bearing
There are two ways to measure the hearing to a
target: by the cursor. and by the EBL (Electronic
Bearing Line).
Measuring bearing by cursor
Operate the trackball to bisect the target with
the cursor intersection. The bearing to the tar—
get appears at the bottom of the display.
Measuring by EBL
1. Press the [EBL 1] or [EBL 2] key.
2. Operate the trackball to bisect the target with
the EBL.
The trackball must be operated within five
seconds after pressing an [EBL] key, other—
wise the corresponding EBL cannot be oper-
ated. Press the [EBL] key again to adjust the
EBL.
3. Check the EBL readout at the bottom left-
hand comer of the display to ﬁnd the bear-
ing to the target.
4. To anchor the EBL, press the corresponding
[EBL] key again.
To erase the EBL and its readout, press and hold
down the corresponding [EBL] key about two
seconds.
Note 1:Avaitability oi a particular display item
depends on incoming data.
Note 2:When Range to Waypoint reaches 0.1
nm, the WPT mark jumps to dead
ahead even though a difference may
exist between heading and BHG to
WPT.
Note 3:When cross track error exceeds 1 nm
on either side, the XTE mark starts
blinkingt
2.6 Selecting the Range
The range selected automatically determines the
range ring interval, the number of range rings,
pulsclength and pulse repetition rate, for opti-
mal detection capability in short to long ranges
You can select which ranges and pulselength
(for 1.5 and 3 mile ranges) to use through the
menu. The range. range ring interval and
pulselength appear at the top left—hand comer
of the display.
Selecting the range
Press the [. RANGE +] key. The range and range
ring interval appear at the top left comer on the
display.
Tips for selecting the range
0 When navigating in or around crowded har-
bors, select a short range to watch for pos-
sible collision situations.
0 If you select a lower range while on open
water. increase the range occasionally to
watch for vessels that may be heading your
way.
2.7 Adjusting Picture Brilliance
The [BRILL] key adjusts the brilliance of the
radar picture in sixteen levels.
Press the [BRILL] key to set the brilliance level.
The current level momentarily appears on the
screen.
2.8 Adjusting Receiver Sensitivity
The [GAIN] control adjusts the sensitivity of
the receiver. It works in precisely the same
manner as the volume control of a broadcast
receiver, amplifying the signals received.
The proper setting is such that the background
noise is just visible on the screen. If you set up
for too little sensitivity, weak echoes may be
missed. On the other hand excessive sensitivity
yields too much background noise; strong tar-
gets may be missed because of the poor con-
trast between desired echoes and the
background noise on the display.
To adjust receiver sensitivity. transmit on long
range, and adjust the [GAIN] control so back—
ground noise is just visible on the screen.
2.9 Adjusting the NC SEA
Control (reducing sea clutter)
Echoes from waves can be troublesome. cover-
ing the central part of the display with random
signals known as “sea clutter". The higher the
waves, and the higher the antenna above the wa-
ter, the further the clutter will extend. Sea clut-
ter appears on the display as many small echoes
which might affect radar performance. (See the
left-hand ﬁgure in Figure 2—4.) When sea clut-
ter masks the picture, adjust the A/C SEA con-
trol to reduce the clutter.
How the NC SEA control works
The [NC SEA] control reduces the amplifica-
tion of echoes at short ranges (where clutter is
the greatest) and progressively increases am-
pliﬁcation as the range increases, so ampliﬁca-
tion will be normal at those ranges where there
is no sea clutter.
To cancel, press the [EBL OFFSET] key. 213 Zoom
The zoom feature allows you to double the size
A of the area between your vessel and any loca—
tion within the current range to take a closer
VRM1 look at an area of interest.
EBLI
1. Select location with the cursor.
------- ‘ ‘ 2. Press and hold down the [SHIFT/ZOOM]
key about two seconds. ZOOM appears at
the top right corner when the zoom function
is on.
VFIM
EBL1 —- M“ R 4.5 NMle— vnm
bearing range
Figure 2-12 Measuring the range and bearing
between two targets by using the aﬁset EBL Cursor
2.17 Shifting (off centering) the
Picture
Your vessel’s position can be shifted up to 75% m pl,“ cum, (2 press [F1] (0 mom
of the range in use to view the situation around when desired-
your vessel without changing the range or size . ,
of targets. Figure 2-14 Znomﬁrncnon
l. Operate the trackball to set cursor where de- Note: Zoom is cancelled when range or
sired. presentation mode is changed.
2. Press the [SHIFT/ZOOM] key. cancemng zoom
OFFCENTER appears at the top right cor- Press the [SHIFT/ZOOM] key again.
net of the display when the picture is shifted.
® Place cursor (2 Press SHIFT ZOOM
where desired. key to of! center display.
Figure 2-13 Shifting the picture
Cancelling shifted picture
Press the [SHIFT [ZOOM] key again.
2.11 Selecting the Presentation
Mode -
This radar provides four presentation modes:
head-up, course-up, north—up and true motion.
Press the [MODE] key.
With heading sensor connection, the display and
the display mode indication at the top left-hand
corner of the display change in the sequence of
HU (Head-up). CU (Course-up), NU (North-
up) and TM (True Motion) when the [MODE]
key is pressed. If there is no kneading sensor con-
nection, the display mode is always HU.
Note: The radar begins operation with last
selected display mode (except Course—
up) whenever the unit is turned on.
Note however that Head-up is selected
when Course-up was the test-used
mode.
Head-up
The picture is oriented so the heading marker
is at the top of the display. This mode is useful
for navigation in congested waters.
Course-up
The Course—up mode shows ship‘s heading by
the heading marker, at the top of the display. To
get heading desired. steer vessel in direction de-
sired, and then show “CU” at the top left-hand
comer of the display.
North-up
North is at the top of the display and the head—
ing marker moves with ship’s heading. This
mode is useful for detemiining ship’s position
and as a navigation monitor on a nautical chart.
The picture is stabilized against yaw of vessel.
thereby reducing smear of target echoes. Bear-
ing signal is required from a heading sensor.
True motion
True motion displays own ship and moving
objects in their true motion. Bearing signal and
speed signal are required from heading sensor
and spwd sensor.
2.12 Erasing the Heading Marker,
North Marker
The heading marker or north marker (available
with gymcompass connection) may occasion-
ally mask a target. To view the target, you can
temporarily erase the heading marker and north
marker by pressing and holding down the
[GAIN (HM OFF)] control. Release the con-
trol to re-display the markers.
Heading
murky
North "talker
Figure 2-6 Heading marker and norrh marker
2.13 Magnifying Long Range
Echoes (echo stretch)
Normally, the reﬂected echoes from long range
targets appear on the display as weaker and
smaller blips even though they are compensated
by the radar’s internal circuitry. The echo stretch
function magniﬁes these small blips in all
ranges. Two types of echo stretch are available:
ES 1 which stretches echoes in bearing direc-
tion and E52 which stretches them in both range
and bearing directions.
To turn the echo stretch on or off. press the
[A/C RAIN (ES)] control. Each press changes
the echo stretch function in the sequence of
E51, E52 and OFF. 1381 or 552 appears at
the top right-hand comer of display when
echo stretch is on.
Echo straw-2
Emu Md! 1
Figure 2-7 Echo stretch
Note] :This function magnifies not only targets
but also see clutter and radar
interference. For this reason be sure the
controls for adjustment at sea clutter
and radar interference are properly
adiusted before activating the echo
stretch.
Note 2: E52 is not available on short ranges.
3. ADVANCED OPERATION
3.1 Basic Menu Operation
The menu mostly contains lessoften used func-
tions which once preset do not require regular
adjustment. To open or close the menu, press
the [MENU] key. You can select items on the
menu with the trackball. The complete menu
appears at begining of this manual.
1. Press the [MENU] key to display the main
menu.
OSeI by T-bﬂl A plea ENT.’
change brill
1mm Sta nnx.
Figure 3-1 Main menu
2. Operate the trackball to select the item. For
example, select RINGS. A message appears
at the bottom of the menu window.
3. Press the [ACQ/ENTER] key to select set-
ting. Each time this key is pressed.
the message changes. For the RINGS menu,
the message sequence is as shown below.
Change brill from Off to 1.
Change brill from 1 to 2.
Change brill item 2 to 3.
Change brill from 3 to max.
Change brill from max to Off.
Figure 3-2 Messages for RINGS menu
4. Press the [MENU] key to close the menu.
3.2 Index Lines
The index lines are useful for maintaining a
constant distanoe between own ship and 3 const—
line or partner ship. They are linked with EBL2
and VRM2.
Figure 3-3 Index lines
Turning the index lines onleﬁ‘
1. Press the [MENU] key.
2. Select “INDEX LINE" by the trackball.
3. Select “Index Line on" by pressing the
[AGO/ENTER] key.
4. Press the [AGO/ENTER] key to conﬁrm.
5. Press the [MENU] key to close the menu.
To turn the index lines off, select “Index Line
off" and press the [ACQIENTER] key.
Rotating the index lines
1. Press the [EBL 2] key to activate EBLZ.
2. Operate the trackball.
Adjusting the index lines Interval
1. Press the [VRM 2] key to activate VRM2.
2. Operate the trackball.
6.0 NM
Target
Cursor
EBL1
EBLZ
Cursor
. EBL Bearing
EBLt bearing _..._
EBLt bearing a ‘3540' R 40.0‘R 4.0 NM
Figure 2-10 How to measure bearing by EBL
and cursor
Note: The bearing readout for the EBL and
the cursor can be displayed in relative
or true bearing (true bearing requires
heading sensor input). For North-up
and Course—up display modes the
bearing reference is always true.
Tips for measuring bearing
0 Bearing measurements of smaller targets are
more accurate; the center of larger target pips
is not as easily identiﬁed.
' Bearings of stationary or slower moving tar-
gets are more accurate than bearings of faster
moving targets.
0 To minimize hearing errors keep echoes in
the outer half of the picture by changing the
range scale: angular difference becomes dif-
ficult to resolve as a target approaches the
center of the display.
2.16 Using the Offset EBL
The offset EBL provides two functions: predict
collision course of radar target and measure the
range and the bearing between two targets.
Predicting collision course
l. Operate the trackball to place the cursor on
the center of the target.
2. Press the [EBL 1] key to turn on EBLl.
3. Press the [EBL OFFSET] key. EBLl's oria
gin shifts to cursor location.
4. After waiting several minutes, press the
[EBL 1] key again.
5. Operate the trackball to pass EBLl through
the center of the target.
If the target tracks along the EBL towards the
center of the display (your vessel's position),
the target may be on a collision course.
To cancel the offset EBL. press the [EBL OFF-
SET] key.
Olfset EBL
(EELt)
EBL
55“ a m [ﬂigh— VRMI
bearing range
Figure 2-11 Predicting collision course by
using the oﬂsei EBL
Measuring range and bearing between
two targets
The procedure which follows shows how to
measure the range and bearing between target
“A" and target “B" in Figure 2—12.
1. Operate the trackball to place the cursor on
the center of target ""A.
2. Press the [EBL 1] key to turn on EBLl.
3. Press the [EBL OFFSET] key. EBLl’s ori-
gin shifts to cursor location.
4. Press the [EBL 1] key.
5. Operate the trackball to bisect target “B" with
EBL]. Check the EBLl readout to ﬁnd the
bearing between target "A" and target “B".
6. Press the [VRM 1] key to turn on VRMI.
Operate the trackball to place the outside
edge of VRMI on the inside edge of target
“B". Check the VRM readout to find the
range between target “A" and target ‘B
3.5 Displaying Navigation Data
Navigation data can be displayed at the screen
bottom if this radar receives navigation input
in [EC 1162 format Navigation data include;
0 Position in latitude and longitude or Loran-
C time difference
0 Range, bearing and time—to-go to both
waypoint selected on the navigator and the
cursor
0 Speed.
(If the navigation input includes destination
data, waypoint position is denoted on the radar
display by a dashed ring.)
OWN SHIP
34' 56. 12"
135’ 34. ESE
SPD 35W
To turn navigation data on or off
Press the [F1] key if its function is set for DISP
DATA (default setting)‘ or select DATA DISP
on the menu.
— Waypoint Mark
009 NM Data
W‘VWNT Navigation
50.0'M
F igune 3-6 Typical navigation data display
._ Dashed line: 2
" ~ no alarm :
\ Guard /
zone
IN ALAFlM OUT ALARM
Figure 3-8 In and Out alarm
Setting a guard zone
Preparation
1.
3.
4.
Press the [MENU] key, and then select
“OTHER MEN U," and press the [ACQ/EN-
TER] key.
Select “15. Guard Mode" and “In" (alarm
on target entering zone) or “Out" (alarm on
target exiting zone) by operating the
trackball.
Press the [ACQ/ENTER] key.
Press the [MENU] key to close the menu.
To set a guard zone
1.
Mentally create the guard zone you want to
set. For example, the guard zone shown in
Figure 3-9 (1).
Operate the trackball to set the cursor on
point A or B. Press the [GUARD ALARM]
key. “*G (IN)” or “*G (OUT)”, with aster»
isk blinking, appears at the top right-hand
comer of the display. See Figure 3-9 (2). (The
asterisk indicates the guard zone is panially
set.)
Operate the trackball to set the cursor on
point C or D. See Figure 3-9 (3).
. Press the [GUARD ALARM] key. The as-
terisk disappears. See Figure 3-9 (4).
Asterisk mung
6mm m .
u m A 5 (IN)
c f
r: em!
m1“.
U)
(l) Mammy create (2) Drag euraofto
the guard zone to set. (up left corner 01
zone and press
[GUARD ALARM].
(4) Guam! zune (3) Drag cursortn
emulated. bottom rimt corner
of zone and press
[GUARD ALARM].
Figure 3-9 How to set the guard zone
Silencing the audible alarm
Any radar targets violating the guard zone will
trigger the audible alarm. You can silence the
audible alarm by pressing the [GUARD
ALARM] key. When this is done, “G(ACKN)"
replaces “G(]N).” This means the alarm is ac-
knowledged. Press the key again to reactivate
the alarm.
Cancelling the guard zone and alarm
Press and hold down the [GUARD ALARM]
key until the guard zone disappears.
3.3 Suppressing Radar
Interference
Radar interference may occur when near another
shipbome radar operating in the same frequency
band as your radar. Its on-screen appearance is
many bright dots either scattered at random or
in the form of dotted lines extending from the
center to the edge of the display. Figure 3-4 i1-
lustrates interference in the from of curved
spokes. Interference effects are distinguishable
form normal echoes because they do not ap-
pear in the same place on successive rotations
of the antenna.
Figure 3-4 Radar interference
Four levels of interference are available, includ-
ing off: lRl. lR2. IR3 and OFF. IR3 provides
the highest level of rejection.
l. Press the [MENU] key,
2. Select "INT REJECT" and press the [ACQ/
ENTER] key.
3. Select level desired by pressing the [ACQ/
ENTER] key.
4. Press the [MENU] key to close the menu,
IR and level selected appears at the bottom right
corner on the display when the interference re-
jection circuit is turned on.
3.4 Selecting Pulsewidth
Pulsewidth is the transmission time of a single
radar pulse. The longer the pulsewidth the
greater the direction range capability, however
range accuracy and range resolution are re-
duced.
Pulsewidth can be selected to short or long on
the 1.5 and 3 nautical mile ranges.
1. Press the [MENU] key.
2. Select “OTHER MENU" and press the
[ACQ/ENTER] key.
[OTHERS]
sum IlembyT-bdl
and pass ENTER my,
I Panulnimmer t z 3 I
2 . Mark Brill I 2 a I
3 HD lek t 2 3 I
4 . Characters 1 2 a I
5.TVB]|TM\Q — Mum
s . Pululangth Short m
7 . Nnine Reiea “ on
a TralITime - ans 1M
3M SM |5M aw Cont
9.Tune “ Manual
to. WPY Mark I. On
ll. EBL Rel |- m.
12. WW Unlt Ill km st“
13. watchman I- 5M |0M 20M
14. Stay Dine Ecom Nav
is. Guard Mode l Out
is, Own Poem ll TD
I7. Cursor Post P w UL
ta. Alm Sense LV Med Htg
t9. Dead Seen»: 0"
20-Han99 II I I I t I
2.4 I a Its-III“
21 2nd He] II 0“
22. Soil Test
23. Installation Setup
we; rangers,
FR—‘ll tz 71
Finns: 96
Figure 3-5 OTHER MENU
3. Select “6. Pulselength" by operating the
trackball.
4, Select Short or Long by operating the
trackball.
5. Press the [ACQ/ENTER] key.
6. Press the [MENU] key to close the menu.
3.9 OTHER MENU Description
The table below summarizes the OTHER MENU.
Table 3-2 OTHER MENU Description
1. Panel Dimmer Selects level of panel backlight.
2. Mark Brill Selelcts brilliance of VRM, EBL, cursor. guard zone and WP
mar s.
3. HD Mark Selects brilliance of heading marker.
4. Characters Selects brilliance of characters
5. Trail Tone Selects gradations of echo trails.
6. Pulselength Selects pulselength for 1.5 and 3 mile ranges.
7. Noise Reject Select “On" to reject noise.
8. Trail Time Selects the trail time.
9. Tune Selects automatic or manual tuning.
To tune manually;
1. Select “Manual“ by the trackball.
2. Press the [ACQIENTER] key to enable manual tuning.
3. While pressing and holding down the [GAIN] control. operate
the trackball. (adjustment range;
FR7062;l.0—11.9V, FR7112/7252:1.0-32 V)
4. Press the [MENU] key to close the menu.
"MANUAL" appears at the top right-hand comer when manual
tuning is In ef ect.
IO, WPT Mark Selects “On" to display the waypoint mark.
1 l. EBL Ref Selects EBL reference for relative or true.
12. VRM Unit Selects distance unit of VRM and cursor for nm, km or sm.
13. Watchman Turns watchman on (set rest period) or off.
14. STBY Disp kSelects the condition at stand—by; display “STBY” or navigation
data, or go into the economy mode.
15. Guard Mode Selects condition which triggers guard alarm; in or out.
16. Own Position Displays the own shi ‘s position in lat/long or Loran C TDS.
(Requires NAV data.
17. Cursor Posi Displays the cursor position in range/bearing or lat/long.
18. Alm Sense LV Selects minimum echo strength which triggers guard alarm. [
19. Dead Sector Select "On" to display the dead sector, which shows the area
where the radar is not transmitted.
20. Range Selects ranges to use. |
21. 2nd Rej Select “On" to suppress second-trace echoes. |
22. Self Test Tests keys, ROM and RAM, checks antenna rotation speed, and
. Installation Setup
displays program no.
For technicians.
3.6 Echo Trail
You can show the movement of all radar tar-
gets relative to your vessel in afterglow. This
function is useful for alerting you to possible
collision situations.
Starting echo trail
Press the [ECHO TRAIL] key.
TRAIL, the echo trail time selected (on
“OTHER MENU”) and elapsed time appear at
the top right-hand corner of the display. Then,
afterglow starts extending from all targets.
Figure 347 How the echo traiI feature works
Note: Trails are restarted when range or
mode is changed or zoom or shllt is
turned on.
Fixed time trail
1. When the elapsed time clock counts up to
the trail time selected, the elapsed time dis-
play freezes.
2. The oldest portions of trails are erased so
only the latest trail, equal in length to the
trail time selected, is shown.
3. Trail continues.
For example, the one minute trail time is se—
lected. When the elapsed time clock counts up
to 60 seconds, the elapsed time display freezes
at “60,” but the latest one minute of trail is
erased and then trail continues.
Continuous trail
The maximum continuous trail time is 99 min—
utes and 59 seconds. When the elapsed time
clock counts up to that time the elapsed time
display is reset to zero and trail begins again.
Cancelling echo trail
Press the [ECHO TRAIL} key again.
Changing trail attributes
Trail gradation and trail time can be selected
on the OTHER MENU.
Table 3-1 Trailing attributes
Trails can be shown in
single or multiple
gradations. Multiple paints
nails getting thinner with
time just like the afterglow
on an analog PPi radar.
Trail Tone
Single Multiple
Trails can be set for 15
sec., 30sec.. 1min., 3mm,
6min.. 15min., 30min, or
continuous.
Trail Time
3.7 Guard Alarm
The guard alarm allows the operator to set the
desired range and beating for a guard zone.
When ships, islands, iandmasses, etc. violate the
guard zone an audible alarm sounds and the
offending target blinks to call the operator's at-
tention.
Selection of guard zone type
The guard alarm can be set to sound when a
target enters or exits the guard zone. You can
select which type of guard alarm you went
through the menu.
In alarm
The alarm sounds on targets entering the guard
zone. “G UN)" appears at the top right-hand
corner when the In alarm is selected.
Out alarm
The alarm sounds on targets exiting the guard
zone. “G (OUT)" appears at the top right-hand
comer when the Out alarm is selected.
4. FALSE ECHOES
Occasionally false echoes appear on the screen
at positions Where there is no target. In some
cases the effects can be reduced or eliminated.
The operator should familiarize himself or her—
self with the appearance and effects of these
false echoes, so as not to confuse them with
echoes from legitimate contacts.
4.1 Multiple Echoes
Multiple echoes occur when a short range,
strong echo is received from a ship, bridge, or
breakwater A second, a third or more echoes
may be observed on the display at double, triple
or other multiples of the actual range of the tar-
get as shown in Figure 4- 1. Multiple reﬂection
echoes can be reduced and often removed by
decreasing the sensitivity or properly adjusting
the A/C SEA,
True
echo
Own ship Multiple
echo
Figure 4-1 Multiple echoes
4.2 Side-lobe Echoes
Every time the antenna rotates, some radiation
escapes on each side of the beam—called
“side-lobes.” If a target exists where it can be
detected by the side—lobes as well as the
main»lobe, the side-lobe echoes may be repre-
sented on both sides of the true echo at the same
range, as shown in Figure 4-2. Side-lobes show
usually only at short ranges and from strong tarA
gets. They can be reduced through careful re-
duction of the sensitivity or proper adjustment
of the A/C SEA.
Main—lobe True “ho
/ Side-lobe
Spurious
target
Antenna
Figure 4-2 Side-lobe echoes
Notes on the guard alarm
0 The alarm is a useful anti—collision aid. but
does not relieve the operator of the respon-
sibility to also keep a visual lookout for pos—
sible collision situations.
0 When the radar range is less than one half of
the guard zone range, the guard zone disap—
pears and “G (IN)" or “G (OUT)” appears
in inverse video. If this happens, raise range
to re-display the guard zone.
0 A target echo does not always mean a land-
mass, reef, ships or surface objects but can
imply returns from sea surface or precipita-
tion. As the level of these returns varies with
envrronment, the operator should properly
adjust the A/C SEA, A/C RAIN and GAIN
to be sure the alarm system does not over-
look target echoes
3.8 Watchman
The watchman function periodically transmits
the radar for one minute to check for targets in
a guard zone, If it ﬁnds change in the zone from
the previous transmission the audible alarm
sounds and lhe radar transmits continuously.
This eature is useful when you do not need the
rudar's function continuously but want to be
alerted to radar targets in a speciﬁc area.
1 Tx VSt-by .- TX St by _____
ﬁF—‘—1—/5‘—v—/ ‘—v—/
1mm 5.100r 1 min 5.100r
20 mm 20 min
Watchman
starts,
Figure 3-10 How watchman works
How watchman works
When the time selected for the watchman rest
period has elapsed, the radar automatically
transmits for one minute to check the condition
inside the guard zone. If there is no change, the
radar goes into stand—by (“WATCHMAN" ap-
pears during stand-by.) If there is change, the
radar sounds the audible alarm, cancels the
watchman function and transmits continuously
Turnan on watchman
1. Create a guard zone (usually 360 degrees)
with the guard alarm function.
Press the [MENU] keyr
Select “OTHER MENU".
Press the [ACQIENTER] keyr
Select “13. Watchman".
99.59.“
Operate the trackball to select watchman rest
period: 5 minutes, 10 minutes or 20 minutes.
7. Press the [ACQ/ENTER] key.
8. Press the [MENU] key to close the menu,
“WATCHMAN” appears at the top of the
screen. the radar transmits for one minute to
check for targets inside the guard zone, and then
the CRT shuts off and the radar goes into stand-
by.
Cancelling watchman
Go into the “OTHER MENU" , and set “13.
Watchman" for off.
Note 1:Watchman can be used without a guard
zone.
Note 2:The alarm sounds just belore the radar
starts and stops transmitting.
5. MAINTENANCE & TROUBLESHOOTING
#.
This chapter tells you how to keep your radar
in good working order. Before reviewing this
chapter please read the safety information which
follows.
& WARNING
Do not open the equipment.
Improper handling can result In electrical shock.
Only qualiﬁed personnel should work inside the
equipment.
RF HADIA‘HON HAZARD
The radar antenna emits high lroquency
radio radiation which can be hnrmiul,
particularly to your eyes.
Never look directly into the antenna lrom a distance ol
less than two leet when the radar is in operation as
you could injure the comes at your eyes. Always
make sure the radar is set to stand-by or is turned oil
belcre starting work on the antenna unit.
5.1 Preventive Maintenance
Regular maintenance is important for good per-
formance. Always keep the equipment as free
as possible from dirt, dust, and water splashes.
Make sure all screws securing the components
are properly tightened.
A maintenance program should be established
and should at least include the items listed in
Table 5-1.
5.2 Replacing the Fuse
The fuse in the fuse holder at the back of the
display unit protects the equipment against re-
verse polarity of ship's mains, overcurrent, and
equipment fault. If the fuse blows, ﬁnd the cause
before replacing it. Never use an incorrect fuse
- serious damage to the equipment may result
and void the warranty.
I’ll-706217112 is shipped with a 15A fuse for
12V ship's mains. If the ship‘s mains is 24/32V.
change the fuse to 10A (supplied).
FR—7252 is supplied with 3 10A fuse for 24/32
V ship's mains.
Unmepropeﬂuu.
Fuse railing is shown on page 5-1.
Use of a wrong fuse can result In
equipment damage.
Table 5-1 Recommended maintenance program
Item
Check point
Remarks
Exposed nuts
and bolts on
antenna unit
Antenna
radiator
then call for repair.
6 months to
l vear
Display unit
connectors
corrosion.
Check for corroded or loosened
nuts and bolts. If necessary, clean
and repaint them thickly. Replace
them if heavily corroded.
Check for dirt and cracks on
radiator surface. Thick dirt should
be wiped off with soft cloth
dampened with fresh water. If a
crack is found, apply a slight
amount of sealing compound or
adhesive as a temporary remedy,
Check for tight connection and
Sealing compound may be used
instead of paint. Apply a small
amount of grease between nuts and
bolts for easy removal in future.
Do not use plastic solvent
(acetone) for cleaning. If you need
to remove ice from antenna unit,
use a wooden harrurier or plastic
head hammer; Crack on the unit
may cause water ingress, causing
serious damages to internal circuitsl
If corroded. contact your dealer for
replacement.
3.10 Function Keys
The function keys (Pi and F2) work like‘the
auto-dialing feature of a telephone, automati-
cally executing the function assigned to them.
The assigned function can be turned cit/off by
pressing appropriate function key again.
Default settings
Fl: Display NAV/ARPA data
F2: Noise rejector
How to program function keys
1. Press the [MENU] key.
2. Press [F1] or [F2] to open the function menu.
[SETTING FOR Fl KNOB]
050i by T-ball l- prses ENT.’
Press MENU key to moo,
Figure 3-10 Function menu
3. Select function desired.
4. Press the [AGO/ENTER] key.
5. Press the [MENU] key to close the menu.
3.11 Adiustlng Brilllance of
Markers
“2. Mark Brill" on the OTHER MENU adjusts
the brilliance of markers such as the cursor.
3.12 Suppressing Second-Trace
Echoes
In certain situations, echoes from very distant
targets may appear as false echoes (second—trace
echoes) on the screen. This occurs when the re-
turn echo is received one transmission cycle
later, namely, after a next radar pulse has been
transmitted. To suppress them, select “2nd Rej
On" on the OTHER MENU.
3.13 Suppressing Noise
Electrical noise can be suppressed by turning
on “7. NOISE REI" on the OTHER MENU.
This function is available by pressing the [F2]
key (default setting).
3.14 Outputting Target Positlon
Target position data can be output to a plotter
in IEC 1162 format. Press and hold down the
[TLL] key to output the data. This function re—
quires position data and heading signal.
3.15 Tuning the Receiver
The radar receiver can be tuned automatically
or manually, and the default tuning method is
automatic. In automatic tuning, the radar is au~
tomatically tuned everytime the radar is
switched to “TX" and the indication “TUNING"
appears during tuning.
The timing bar at the top right—hand comer of
the display shows tuning condition. Generally,
the longer the tuning bar the better the tuning
condition, however the length of the bar changes
with number of radar echoes, range and other
factors. Current tuning method is shown above
the tuning bar as either “AUTO“ or
“MANUAL."
For how to tune the receiver manually, see "9.
Tune" on page 3-7.
Note: Automatic tuning may not work
properly it own ship’s radar receives the
radar wave of another ship's radar.
If this is the case. the radar will be out
of tune. Press the [STBYITX] key twice
to retune.
5.4 Self Test
The self test facility checks the keyboard. ROM
and RAM for proper operation.
1. Press the [MENU] key.
2. Select “OTHER MENU”.
3. Select “22. Self Test" and press the [ACQI
ENTER] key. The following display appears.
[Scl'TnI]
Key test: Press each my and
check «an-screen macaw»!
[SCI
mgr-m N9; mus—in
non 10K
RAM at
Hams-rmmmm
hm moooouu
<9“ MENU inromsns m.)
Figure 5-1 Self test screen
4. The ROM and RAM are automatically
checked. If N0 (No Good) appears to the
right of ROM or RAM indication, contact
your dealer for advice. ARP— lOTEST results
appear only when optional ARP—lO board is
mounted.
5. To check the keyboard, press any key ex-
cept [ACQ/ENTER] and [POWER] keys.
The pressed key's on—screen location lights
in black while the key is pressed, if the key
is operating properly.
6. Press the [ACQ/ENTER] key to check the
display circuit. The following pattern should
appear.
Figure 5-2 Test pattern
7. Press the [MENU] key to back to the Self
Test menu.
8. To escape from the test, press the [MENU]
key.
5.5 Life Expectancy of Magnetron
The following table shows the life expectancy
of the magnetrons.
Table 53 Life expectancy of magnetron:
MGSSR9_
53565 — (Including stand-by)
000- 140-762
4.3 Indirect Echoes
Indirect echoes may be returned from either a
passing ship or returned from a reﬂecting sur-
face on your own ship, for example, a stack. In
both cases. the echo will return from a legiti-
mate contaCt to the antenna by the same indi-
rect path. The echo will appear on the same
bearing of the reﬂected surface, but at the same
range as the direct echo. Figure 43 illustrates
the effect of an indirect echo. Indirect echoes
may be recognized as follows:
' they usually occur in a shadow sector
- they appear on the bearing of the obstruc-
tion bul at the range of the legitimate con-
tact
0 when plotted. their movements are usually
abnormal. and
- their shapes may indicate they are not direct
echoes.
Direct
path \
Obslructrtm
(masl. funnel.
Antenna
etc]
Target True
Indirect Indirect echo
path Direct echo
\ \ J- path
\. ‘ Heading
line
True
echo
» . i. Indirect
Indirecl echo
echo
F igure 4-3 Indirecl echoes
4.4 Blind and Shadow Sectors
Funnels, stacks, masts. or derricks in the path
of antenna may reduce the intensity of the ra-
dar beam. If the angle subtended at the antenna
is more than a few degrees a blind sector may
be produced. Within the blind sector small tar-
gets at close range may not be detected while
larger targets at much greater ranges may be
detected. See Figure 444.
Vessel tal|er
than when
Mast, etc. in
path 01 radar
beam
Whari
Wharf
Blind sector \
{no echo) Size 0! blind sector
depends on target
size and range
Figure 4-4 Blind and shadow xecmrs
6. ARP-10 (OPTION)
”I
& WARNING
No one navigational aid should be relied
upon for the safety of vessel and crew.
The navigator has the responsibility to
check all aids available to confirm
position. Electroni aids are not
a substitute for basic navigational
principles and common sense.
- This auto plotter automatically tracks an
automatically or manually acquired radar
target and calculates its course and
speed, indicating them by a vector. Since
the data generated by the auto plotter
are based on what radar targets are
selected, the radar must always be
optimally tuned for use with the auto
plotter. to ensure required targets will not
be lost or unwanted targets such as sea
returns and noise will not be acquired
and tracked.
o A target does not always mean a land-
mass. reef. ships or other surface vessels
but can imply returns from sea surlace
and clutter. As the level of clutter changes
With environment, the operator should
properly adjust the A/C SEA. A/C RAIN
and GAIN controls to be sure target
echoes are not eliminated lrom the
radar screen,
& CAU110N
The plotting accuracy and response 0!
this auto plotter meets IMO standards.
Tracking accuracy is affected by the
following:
- Tracking accuracy is affected by course
change. One to two minutes is required to
restore vectors to full accuracy after an
abrupt course change. (The actual
amount depends on gyrocompass
specifications.)
0 The amount of tracking delay is inversely
proportional to the relative speed of the
target. Delay is on the order oi 15—450
seconds lor high relative speed; 30—60
seconds tor low relative speed.
Display accuracy is affected by the
following:
o Echo intensity
. Radar transmission pulsewidth
0 Radar bearing error
. Gyrocompass error
- Course change (own ship or target)
5.3 Troubleshooting
Table 5-2 contains simple troubleshooting pro-
cedures which you can follow to try to restore
normal operation. If you cannot restore normal
operation, do not attempt to check inside any
unit of the radar system' Any repair work is best
left to a qualiﬁed technician.
Table 5-2 Troubleshooting table
—_
- try adjusting the control panel
backlighting on the OTHERS MENU.
0 battery may have discharged
~ check power fuse at rear of display
unit.
you pressed the
[POWER] key to
mm on the radar
the control panel
does not light
nothing appears on - try adjusting the brilliance.
the display or display
contrast is poor
characters are - request service
distorted
the antenna does not - the problem may be in antenna unit.
rotate Request service.
characters and - have a qualiﬁed technician check the
indications are set.
abnormal
the radar has
warmed up and you
pressed the [STBY/
TX] key to transmit
neither noise nor ' check signal cable for damage.
targets appear
(indications and
markers do)
you have adjusted
the gain with A/C
RAIN and AIC
SEA off
neither indications - check the signal cable for damage.
nor markers appear
(noise and targets do)
the sweep (radial line -
sweeping around the
display) is not
synchronized with
antenna rotation
there is no change in 0 request service.
sensitivity
at key is pressed nothing happens - key may be faulty. Request service.
the problem may be in the antenna
unit Request service.
[ARPMENU]
_ _ Seton turn by T-bal
6.3 Actrvatrng the Auto Plotter and was amen my.
I. Dim-y on
To activate the ARP-lO, follow the steps shown 2 - ‘“ Cm'
below 3 . Veehr Rel Rel
' 4 . Vecbr Length
1. Adjust the GAIN, A/C SBA and NC RAIN 3” 6”
controls for proper radar picture. 5 ' “31°" 51:3
- a . CPA en II 05
2‘ Press the [MENU] key to open the mm mm 5m“ Sm
menu. .TCPASM - rM 2M
3. ﬁrst-$2 the trackball to select “ARP-lO _ Auono a“. 5” g:
4. Press the [ACQ/ENTER] key. The menu Figure 6-1 ARP menu
shown in Figure 6-1 appears.
5. Operate the trackball to select the menu item
“1. Display”.
6. Operate the trackball to select “On”.
7. Press the [ACQIENTER] key.
8. Press the [MENU] key to close the menu.
Target is being backed but is not selected
for data readout
”Threatening
B m
Target Full —J§:€T target
nu
Mark 5“ Target selected
for data reading
(large circle)
Auto
Lost Target Acquisition
‘unw‘ w.
“w.“
s\
,\
BEMMQS'I’ mm”
TRUEVWTOR 53,5265 “NM SPEED IESKT
2m rem was AHPADataArea
Figure 6-2 ARP display
6.6 Terminating Tracking of
Targets
When the ARP»1() has acquired 10 targets, no
more acquisition occurs unless targets are lost.
Should this happen, cancel tracking of indi-
vidual targets or all targets by the procedure
described below.
Individual targets
Place the cursor (+) on the target which you do
not want to be tracked any longer by operating
the trackball and press and hold down the [SE—
LECT/CANCEL] key.
All targets
Tracking of all targets can be canceled from the
ARP- 10 MENU.
1. Open the “ARP-lO MENU“.
2. Select “2.All Cancel".
3. Press the [ACQ/ENT ER] key.
6.7 Displaying Target Data
The ARP- 10 calculates motion trends (range,
bearing, course, speed. CPA and TCPA) of all
targets being tracked at the ARPA Data area.
To turn ARPA data on;
1. Press the [MENU] key.
2. Select the “DISP DATA".
3. Press the [ACQIENTER] key to select the
message for “AR?" or “NAV and ARP".
4. Press the [ACQIENTER] key to set.
5. Press the [MENU] key to close the menu.
& CAU110N
At the speed under 5 kts the target date is
displayed with a delay because of
ﬁltration.
Place the cursor on a wanted target and press
the [SELECT/CANCEL] key. Data on the se—
lected target is displayed at the bottom of the
screen. The symbol of the selected target gets
twice as large as the normal circle. The data in-
cludes the following;
RNG/BRG (Range/Baring): Range and bear-
ing from own ship to the lastvplotted or selected
target position with sufﬁx "T“ (True) or “M"
(Magnetic). For true bearings sufﬁx ‘T” is used
in case of gyrocompass input and sufﬁx “M“ is
used in case of magnetic compass input.
COURSE/SPEED (Course/Speed): Course
and speed are displayed for the last-plotted or
selected target with suffix “T" (True) or “M"
(Magnetic). For true bearings suffix “T” is used
in case of gyrocompass input and sufﬁx “M” is
used in case of magnetic compass input.
CPA (Closest Point of Approach): The clos-
est range a target will approach to own ship.
Do not confuse it with the operator preset CPA
alarm limit.
TCPA: The time to CPA measured with present
speeds of own ship and the targets. Both CPA
and TCPA are automatically calculated. When
a target ship has passed clear of own ship, the
CPA is displayed and the TCPA appears as
“**.*". TCPA is counted up to 99.9 min. and
beyond this it is indicated as TCPA>99.9 min.
6.1 General
The Auto Plotter ARP—lO is an optional circuit
board which is accommodated in the display
unit of the FR-7062 radar.
The Auto Plotter permits manual or automatic
acquisition and automatic tracking of up to 10
radar targets. An internal microprocessor cal-
culate target data such as speed and course and
displays the results in alphanumeric and by vec-
tors. To ensure the reliability of the displayed
target data, the radar must be properly adjusted
for minimum sea returns and noise.
Principal specifications
Acquisition and tracking
0 Acquisition of up to 10 targets between 0.2
and 16 um.
- Automatic tracking of up to 10 acquired tar-
gets between 0.1 and 16 nm.
Vectors
Vector length: 30 s, l. 3, 6. 15, 30 min.
Orientation: True velocity or relative velocity
Past positions
5 past positions at intervals of 15, 30 s, 1, 2. 3,
6 min.
Alarm
Visual and audible alarms against targets vio-
lating CPA/r CPA limits; visual alarm against
lost targets.
Target discrimination
A target measuring about 800 m or more in the
radial or circumferential direction is regarded
as a landmass and not acquired or tracked. Ech-
oes smaller than about 800 m are regarded as
true targets.
6.2 Keys Used for Auto Plotter
The Auto plotter utilizes the following touchpad
keys. Given below is a brief description of these
keys.
MENU:
Displays/Buses the main menu.
SELECT/CANCEL:
(Long press) Temlinates plotting of the target
selected with the cursor.
(Short press) Displays the data of target selected
with the cursor.
AGO/ENTER:
Acquires the target selected with the cursor.
AHP—10 MENU oporatlon
The ARP-IO MENU includes the followings:
Display:
Tums on/off the plot symbols, past positions
and target data.
All Cancel:
Cancels the tracking of all targets.
Vector Ref:
Selects relative vector or true vectors.
Vector Length:
Selects vector time.
History:
Selects past position plot interval.
CPA Set:
Selects CPA alarm limit. When a target is pre-
dicted to come within this limit, an aural alarm
sounds and at the same time the corresponding
target symbol changes to a blinking triangle.
Note: If the preset CPA limit is set at OFF, a
target which is on collision course will not pro-
duce an alarm.
TCPA Set:
Selects TCPA alarm limit.
Auto ACQ:
Tums onloff Auto Acquisition Area.
5mm
SPEClFlCATlONS OF MAR|NE RADAR
FR-1062
sumsmnwinnmochmme
PP] Daylight display, xastzr
' r 'on R“ 'RR
‘550 Hz an 48 nm range or more
(3) Range Resolution Better than 20 m
(4) Bearing Discrimimﬁon XNlZA: within 1.9", XNBA: within 142“
(5) Minimum Rugs 25 m (0.25 NM range)
(6) Bearing Accuracy Within l“
(7) RangeRingAccuracy D.9%ofmngeor8m,whichzv=nstiwgratzr
2. SCANNER UNlT
(1) Radiator Slotted waveguide array
(2) Poiahuﬂcn Hon-imam1
14 rpm nominal: X'NIZA (100 kt max), XNlSA (100 kt max.)
(3) Antenna Rotation Spwd
48 rpm nominal: XNIZA (70 kt max.)
cm, XNBA: 180 cm
(4) Radiator Length XN 12A: 120
(5) Horiwntal Bumwidth XNIZA: less than 19°, XNBA'. less than 12°
(6) Vertical Bean‘width 22°
(7) Sidclobc Amuaﬁon
XN 12A: Within ﬂO' of main-lobe: less than -24 dB
OutSide tZO° of main-lube: less than -30 dB
XNiBA: Within £10“ ofmxiu-iohe: his than -24 dB
Outside $10° ofmain-lobe: kssthan -30 dB
34 TRANSCENER MODULE
(1) Frequency 9410 MHz ﬁOMHz or band)
(2) Modulation PON
(3) Pmk Output Puwer 6 kW
(4) Modulator PET Switching Mnhod
60 MHZ
(5) hutmmdim Frequency
Deactivating the auto plotter
1. Press the [MENU] key.
2. Open the “ARPVIO MENU".
3. Operate the trackball to select the “1. Dis-
play“.
4. Operate the trackball to select “Off‘.
5. Press the [ACQ/ENTER] key.
6. Press the [MENU] key to close the menu.
6.4 Manual Acquisition
Follow the steps below to manually acquire a
target. Up to 10 targets can be manually ac»
quired.
1. Place the cursor (+) on a target of interest by
operating the trackball.
2. Press the [ACQ/ENTER] key.
The plot symbol changes its shape according to
the status as below. A vector appears in about
one minute after acquisition indicating the
target‘s motion trend. [f the target is consistently
detected for three minutes, the plot symbol
changes to a solid mark. If acquisition fails, the
target symbol blinks and disappears shortly.
\ : SQUARE (dotted)
Immediately after acquisition - Plot symbol
shown in broken lines.
' V/SQUARE (dotted with a vector)
One minute after acquisition - Vector still unre-
liable
O/ CIRCLE (Solid with a vector)
3 minutes after acquisition - Plot symbol
changes to a solid circle indicating the stable
tracking condition.
LARGE CIRCLE
The plot symbol of a target being tracked be,
comes twice as large as the normal symbol when
the target is selected for data reading.
Note 1: The target to be acquired should be
within 0.2 to 16 nm from own ship and not ob-
scured by sea or rain clutter.
Note 2: When you want to acquire 11th target,
cancel tracking one of less important targets.
Note 3: When auto acquisition mode (Auto
A00) is on, up to live targets can be acquired.
For details, see 6.5 Automatic Acquision.
& WARNING
When a tracked target nears another
tracked target, the targets may be
“swapped." When two targets come close
to each other, one of the two can become
a "lost target.“ Should this happen,
reacquisition of the “lost target“ is required
alter the two tar-ets have se-arated.
6.5 Automatic Acquisition
The ARP-lO can acquire up to ﬁve targets au-
tomatically by setting the Auto Acquisition area
predeﬁned in the system. If Auto ACQ is se-
lected after more than ﬁve targets have been
manually acquired. only the remaining capac-
ity of targets can be automatically are acquired.
For example; when seven targets acquired
manually, then the Auto ACQ is switched on,
only three targets can be acquire automatically.
When ﬁve targets have been automatically ac-
quired, “AUTO TARGET FULL" message ap-
pears at top left comer seven on the display.
Setting auto acquisition area
Auto acquisition area is predeﬁned between 2.0
and 2.5 nm in range and 45° on either side of
the heading maker in bearing. It" a target comes
into this area, it is acquired automatically.
Figure 6-4 Auto acquisition area
Follow the steps below to activate the auto ac-
quisition area.
1. Open the “ARPJO MENU".
2. Select “8. Auto ACQ" by operating the
trackball.
3. Operate the trackball to select “On”.
4, Press the [ACQ/ENTER] key.
5. Press the [MENU] key to close the menu.
Waypointmanse, Ems) RMB>BWC>BWR
Lem time difference: RMA>GL<>GTD
Watzr depth: DVPDBpDBK>DBS
Water Wm M‘NbMDA
Timz' ZDA
XTE RMB>XTF2APB
‘ l, calculate by magnetic driﬁ.
(7) Output Data NMEAOIBSNeLLSIlO), RS-422
TLL (target data) and RSD
5. EMBlRONMENTAL CONDlTION
(1) Ambient Temperature Scanner Unit: -25'C to +70°C
Display Unit: 45°C to +55°C
(2) Relative Humidity 95 % or less at +40°C
(3) Waterprooﬁng
IPX6
Seamler Unix
Display Unit Chassis: not Speciﬁed
Panel: IPXA
6. POWER SUPPLY 8. POWER CONSUMPTlON
(1) Power Supply 12/24/32 VDC (10.8 to 4 .
(2) Voltage and Current XNllA(24q1m)1 12 V'DC/
XN12A(48rpm): 12 VDCIS.8
imizAmrpm): 12
XNlZAOArpm): 70 w w 9
X'N 12A(48rpm)‘. as w to
XN13M24i-pm): so w m 1
(3) Power ConSumplion
See the Outline Drawmgs
81 COATlNG COLOR
(1) Display Unit Panel: N30
Chassis: 2.5GY5I1.5
N95
(2) Scanner Unit
7.5A, ZAWCB}
F-72
A, 32VDCI7..8A
A, 24VDC/4.4A, 32VDC/33A
VDCJIOA, ZAWC/SA, 32VDC/328A
0 W000 kt)
105 W(70 kt)
20 W000 kt)
6.8 Mode and Length of Vectors
True or relative vector
Target vectors are displayed in relative or true
mode. OWn ship does not have a vector in rela-
tive mode.
Vector length
From the ARP-IO MENU, Vector Length can
be set to 30 seconds 1, 3, 6, 15 or 30 minutes
and the selected vector time is indicated on the
screen.
The vector tip shows an estimated position of
the target after the selected vector time elapses.
It can be valuable to extend the vector length to
evaluate the risk of collision with any target.
Past position display
The ARP- 10 displays equally time-spaced dots
(maximum 5 dots) marking the past positions
of any targets being tracked.
If a target changes its speed, the spacing will be
uneven. If it changes course. its plotted course
will not be a straight line in TM mode.
Operational warnings
There are two main situations which cause the
ARP- to to trigger visual and audible alarms:
- CPA/T CPA alarm
- Lost target alarm
CPA/T CPA alarm
____._.__
Visual and audible alarms are generated when
the predicted CPA and TCPA of any target he
come less than their preset limits. The audible
alarm continues for 10 seconds.
The ARP-lO continuously monitors the pre»
dicted range at the Closest Point of Approach
(CPA) and predicted time to CPA (T CPA) of
each tracked target to own ship.
When the predicted CPA of any target becomes
smaller than a preset CPA alarm range and its
predicted TCPA less than a preset TCPA alarm
limit, the ARP-lO releases an audible alarm. In
addition. the target plot symbol changes to a
triangle and ﬂashes together with its vector.
Provided that this feature is used correctly, it
will help prevent the risk of collision by alert-
ing you to threatening targets. It is important
that GAIN, AIC SEA, AIC RAIN and other ra-
dar controls are properly adjusted and the AR?-
10 is set up so that it can track targets effectively.
CPA/T CPA alarm ranges must be set up prop—
erly taking into consideration the size, tonnage.
speed, turning performance and other charac-
teristics of own ship.
& WARNING
The CPA/TCPA alarm feature should
never be relied upon as a sole means for
detecting the risk of collision.
The navigator is not relieved of the
responsibility to keep visual lookout for
avoiding collisions, whether or not the
radar or other plotting aid is in use.
Follow the steps shown below to set the CPA/
TCPA alarm ranges:
1. Open the “ARP-IO MENU”.
2. On the “CPA Set" line, select a CPA limit
desired. (Off, 0.5. l, 2, 3, 5, 6 nm)
3. Press the [ACQ/ENTER] key.
4. On the “TCPASet” line,selectaTCPAlimit
desired. (305, l, 2, 3, 4, 5, 6, 12M)
5. Press the [ACQ/ENTER] key.
6. Press the [MENU] key to close the menu.
The ﬂashing of the triangle plot symbol and
vector remains on the screen until the danger-
ous situation is no longer present or you inten-
tionally terminate tracking of the target by using
the [SELECT [CANCEL] key.
Lost target alarm
When the system detects a loss of a cracked tar»
get, the target symbol becomes a ﬂashing dia-
mond.
FURUNQ FR—7112
SPECIFICATIONS OF MARINE RADAR
FR-7112
1. GENERAL
(I) Indication System PPI Day]
(2) R2" , ~ ‘tien Rate PRR
ight display, rasrzr scan, 8 tuna in monochrome
‘550 Hz on 48 nm range or more
(3) Range Resolution Better than 20 m
(4) Bearing Discrimination XNIZA: within 19", XNI3A1wiLhin 11°
(5) Minimum Range 25 m (015 NM range)
(6) Bearing Accuracy Within 1°
(7) Range Ring Accuracy 09 % of range or 8 m, whichever is the greater
2, SCANNER UNIT
(1) Radiator Slotted waveguide array
(2) Polarization Horizontal
(3) Antenna Rotation Speed 24 rpm nominal: XN 12A (IOU kt max), XNIBA (IOO Ia max)
48 rpm nominal: KN 12A (70 kt ntax.)
(4) Radiator Length XN 12A:I20 cm,X'N13A: ISO cm
(5) Honzonml Beamwidth XNIZA: Iessthan 1.9", XNIJA: less than 12°
(6) Vertical Beammdth 22°
(7) Sidclobc Anenuation
KN IZA: Within tZO" ofmain-Iobe: less than -24 dB
Outside t20° of main-lobe: less than -30 dB
XNI3A. Within tIO° aftrrain-Inbe11ess than -24 dB
Outside 1:10“ of main—Iobez less than -30 dB
~~ NSCEIVER MODULE
, 94 to MHz 1:30MHZ (x band)
‘ $3 5.1 PON
A; 415" a“ n! Power IOkW
w S 3 4 PET Switching Method
a':
Q C? tFrequcncy GOMHz
Fu 0
(6) Tuning
(7) Receiver Front End
(a) Bandwiddr
(9) Duplexer
4. DISPLAY UNIT
(1) Indication System
(2) Picture Tube
(3)
Number of Rin
(4) Markers
(5) Alphanumeric Indications
(6) Input Dam
Own ship’s position:
Speed:
Heading (True):
Heading (Magnetic):
Course (T me):
Course (Magnetic):
- _elnlenml Number of"
“in mm MEI HIM-ME
kin; )1merval(NM 006250125 0.025 ﬁMMn BE [5
Automatic m- manual
(for manual, select manual turning on menu and tune by trackball)
MIC (Microwave IC)
Tx pulselmgth 0.08 us and 03 ps: 25 MHz
Tx pulselength 0.8 us: 3 MHz
Circulator will: diode limiter
PPI Daylight dis-play, raster scan, 8 colors
12 inch rectangular (184mm x 245 mm) mnochrOInECRT
eﬂ‘eclive display area. mare than 180 mm
IE!
ﬂn-lzillllllllllllllllﬂll
Heading Line, Bearing Scale, Range Rings,
Variable Range Marker (VRMl, VRMZ),
Electronic Having Line (EBLI, EBLZ),
Tuning Bar, Cursor, Parallel Cursor,
Alarm Zone, Waypoint Mark (navigation input required),
Norrh Mark (heading sensor input required)
Range, Range Ring Interval, PulselengthGP, MP, LP),
Display Mode(HU,CU,NU,TM), inrerferenee RejecﬁanﬂRl,IR2,lR3),
Variable Range MarkeﬂVRMl, V'RMZ),
Electronic Bearing Line (EBLI, EBLZ),
Automatic A/C SEA (A/C AUTO), Stand-by (ST-Bio,
Radar Alarm (GUN), G(0UT), G(ACKN)),
Echo Suetch (ES 1. E52), Cursor Range, Bearing or UL Position,
Echo Tailing (TRAIL), Trailing Time, Trailing Elapsed Time,
Navigation Da£a(navign:ion input required),
Heading (an, heading sensor input required)
NMEA0l83 (Vials/10), current loop
GGA>RM®RMA>GLL (GLL is available Ver. 1.5 only)
RMC>RMA>VTG>VHW
HD1>r-11)G">1{DM">VHW>VHW“
Hr>rvi>r-11)G‘‘>Hr>r"‘>VHw>vmv‘l
RMORMA>VTG
VTG>RM(>RMA
FQRUNO FR-7112
SPECIFICATIONS OF MARINE RADAR
11 GENERAL
(1) Indication System
FR-7112
PPI Daylight display, raster scan, 8 term in monochrome
(2) Range, Pulselength (PL) & Pulse Repetition Rate (PRR)
‘550 Hz on 48 nm range or more
(3) Range Resolution
(4) Bearing Discrimination
(5) Minimum Range
(6) Bearing Accuracy
(7) Range Ring Accuracy
2‘ SCANNER UNIT
(1) Radiator
(2) Polanzznon
(3) Antenna Rotation Speed
(4) Radiator Length
(5) Honzontal Beamwidth
(6) Vertical Beamwidth
(7) Sidelobe Attenuation
XN 12A:
XN13A:
3, TRANSCEIVER MODULE
(1) Frequency
(2) Modulation
(3) Peak Outpm Power
(4) Modulator
(5) Intemtedjate Frequency
Better than 20 m
“12A: within 1.9",XN13A: within 1.2"
25 m (0.25 NM range)
Within 1°
0.9 % of range or 8 m, whichever is the greater
Slotted waveguide array
Horizontal
24 rpm nominalt XNIZA (100 kl max), XNISA (100 kt max.)
48 rpm nominal: XNIZA (70 kt max.)
XN12A1120 cm, XN13A2180 cm
XNIZA; less than 19°, X'N13A: Iessthan 12°
22°
Within ﬂ0° of main-lobe: less than -24 dB
Outside i20" of main-lobe: less than -30 dB
Within £10° ofrnain-lobet less than -24 dB
Outside 110" of main-lobe: less than -30 dB
9410 MHZ £30th (X band)
PON
10 kW
PET Switching Method
60 MHZ
9. COMPASS SAFE DISTANCE
(1) Display Unit Standard: LI in chring: 0.8 m
(2) Sumner Unit Standard: Ll) m Steering: 0.8 m
10. ARP MODULE (OPTION)
(1) Acquisition Range 0.2 w 16 NM
(2) TmckingRange Mayhem
(3) Maximum Number of Target 10
(4) Acquisition Tim: Within 5 sec (scanner rotation: 24 rpm)
(5) Alarm Timing Lost target (blink mark, collisiuu alert)
(6) Vector Luigi]: 30 sec; 1, 3,60r15min(sclncwdonmu)
(7) Plotting Interval 30 sec; 1, 2, 3, 4 or 5 min (selected on menu)
(3) Numeric Data Indication Distance, Bearing, Course, Spwd, CPA, TCPA
(9) Acquisition Available Speed 100 kt relative
F -7062
FQRHNO F5—7112
Waypoint(Range. Baring): RMB>BWC>BWR
[man time diﬁermee: RMA>GL(>GTD
Water depth: DFDDBDDBK>DBS
Water tempemtune: MTW>MDA
Time: ZDA
XTE: RMB>XTF2APB
‘ I: calculate by magnetic driﬁ.
(7) Output Data NMEA0183(Ver,1.5/210), 115-422
TLL (target data) and RSD
5. EMBIRONMENTAL CONDITION
(1) Ambimt Temperature Scanner Unit: -25°C to +70°C
Display Unit: 45°C to +55°C
(2) Relative Humidity 95 % or less at +40“C
(3) Waterprooﬁng
Scanner Unit IPXG
Display Unit Chassis: not speciﬁed
Panel: IPX4
6. POWER SUPPLY Bu POWER CONSUMPTION
(1) Power Supply 1224/32 V'DC (10.8 to 41,6 VDC)
(2) Voltage and Current XN12A(24rpm): 12 VDCISBA, 24VDC/4.2A, 32VDC/3.1A
XNlZAGRrpm): 12 VDC/lOA, 24VDCI5A1 32VDC/3.8A
XNl3A(24rpm): 12 VDC/10.8A, 24VDC/5.4A, 32VDCI4.1A
(3) Power Consumption XN12A(24rpm): 85 W m 100 W(100 kt)
XN12A(48rpm): 95 W to 120 W(70 kt)
XN13A(24rpm): 90 W to 130 W(100 kt)
7. DlMENSlONS AND MASS
See the Outline Drawings
3. COATING COLOR
(1) DisplayUnil Pancl:N3.0
Chassis: 2.5GY5/l ,5
(2) ScanmrUnit N95
F N FR- 2
(6) Tuning Automatic or manual
(for manual, select manual tuning on mum and turn: by trackball)
(7) Receiver Front End MC (Microwave IC)
(8) Bandwidth Tx pulselength 0.08 us and 0.3 ps: 25 MHz
Tx pnlselength 0.8 us: 3 mil
(9) Duplexar Circulator with diode limimr
4. DlSPLAY UNIT
(1) Indication System PPI Dath display, raster scan, 8 colors
(2) Picture Tube 12 inch rwmngular (184 mm x 245 mm) monochrome CRT
eﬁecﬁw display area more than 150 mm
(3) Kane, Ran_elnwrval Numberof"-_s
HEIHIIHBIIBIEMMI
Miran-m
_-Mo 125 MMIIEIIIHIEE rs
--ll-IIIIII!IIIII I!!! 4
(4) Markers Heading Line, Bur-mg Scale, Range Rings,
Variable Range Marker (VRMl, VRMZ),
Electronic Baring Line (EBLI, EBLZ),
Tuning Bar, Cursor, Parallel Cursor,
Alarm Zone, Waypoim Mark (navigation input required),
North Mark (heading sensor input required)
(5) Alphanumeric Indications Range, Range Ring Intcrval, Pulsclcngth(SP, MP, LP),
Display Mode(HU, CU, NU, TM), lmcrfermce erioctionﬂRI, IR2, IR3),
Variable Range MarkeKVRMl, VRMZ),
Electronic Baring Line (EBLI, EBLZ),
Automatic A/C SEA (AIC AUTO), Stand-by (ST-BY),
Radar Alarm (G(IN), G(DUT), G(ACKN)).
Echo Stretch (E81, E52), Cursor Range, Bearing or LIL Position,
Echo Talling (TRAIL), Trailing Time, Trailing Elapsed Time,
Navignrim Dara(navigation input required),
Hﬁdins (HDC, headins sensor in?“ required)
(6) Input Data NMEAO 183 (Var. 1,512.0), current loop
Own ship’s position: GGA>RMC>RMA>GLL (GLL is available Ver.1.5 only)
Speed: mommwuw
Heading (True): PDPPDG“>HDM">VHW>VHW'
Heading (Magma): PmM>l-ﬂ)G">HDT">VHW>VHW"
Course (r me): RMDRMA>VTG
Course (Magnetic): WG>RMDRMA
F RUN F .
SPECIFICATIONS OF MARINE RADAR
FR-7252
1. GENERAL
(l) Indication System PP] Dayﬁshf display, raster sun, 8 mm in mcmochmme
(2) Rana, Pulse! . - . . “on m RR
‘550 Hz on 48 nm In 72 nm range. or 500 Hz on 96 nm range
(3) Range Rcsolrm'on Better than 20 m
(4) Bearing Discrimination XN12A: within 19°, XN13A: widrin 11°
(5) Minimum Range 25 m (0.25 NM range)
(6) Bearing Accuracy Within I“
(7) Range Ring Accuracy 0.9 % of range or 8 m, whichever is the great“
2. SCANNER UNIT
(1) Radiator Slotted waveguide array
(2) Polarization Horizontal
(3) Antenna Rotation Speed 24 rpm nominal: XINIZA (100 kx max), XNBA (100 In max.)
48 rpm nominal: XN12A (70 ktmax.)
(4) Radiator Length “12141120 cm, XNISA: 180 cm
(5) Horizontal Beamwidrh XNIZA: less than 1.9“, XNI3A: less than 1.2“
(6) Vertical Beamwidth 22°
(7) Sidelobe Attenuation
m 12A: Within 120a ofrnain-Iobe: less than -24 dB
Outside i20° ofmain-Iobe: has than -30 dB
XN13A: Within 1:10“ ofmain—lobe: less than -24 dB
Omside i10° ofmain-Iobe: less than —30 dB
3. TRANSCEIVER MODULE
(1) Frequency 9410 m-rzﬂomrzabaud)
(2) Modulation PON
(3) Peak Output Power 25 kw
(4) Modulaxor PET Switching Method
(5) Intermediate Frequency 60 MHz
EURUNQ FR-zng
9. COMPASS SAFE DISTANCE
(1) Display Unit Standard: 1.1 m Swen-ins: 0.8 m
(2) Scanner Unit Standard: 140 m Steering: 0.8 m
10. ARP MODULE (OPTION)
(1) Acquisition Range 0.2 to 16 NM
(2) Trackingkany 0.1m16NM
(3) Maximum Number of Target 10
(4) Acquisition Time Within 5 sec (scanner rotarim: 24 rpm)
(5) Alann Timing Lost target (blink mark, collision alert)
(6) Vector Length 30 sec; 1, 3, 6 or 15 min (selected onmenu)
(7) Plotting Interval 30 sec; 1, 2, 3, 4 or 5 min (selected on menu)
(8) Numeric Data Indication Distance, Baring, Course, Speed, CPA TCPA
(9) Acquisition Available Speed 100 kt relative
Pg R9 NQ Eg~1g§g
Waypoimﬂlange, Bearing): RMB>BWC>BWR
Loran time difference: RMA>GLC>GTD
Water dcprh: DP'DDB'DDBK>DBS
Water temperature: MTW>MDA
Time: ZDA
XTE: RMB>XTF>APB
‘I: calculate by magi-Mic driﬁ.
(7) Output Data NMEAO]83(Ver.l.5/2.0), 115-422
TLL (targa data) and RSD
5. EMBIRONMENTAL CONDITION
(l) Ambient Temperature Scanner Unit: -25°C to +70°C
Display Unit: -15°C to +55°C
(2) Relative Humidity 95 % or less at +40°C
(3) Waterprooﬁng
Scanner Unit [PX6
Display Unit Chassis: not speciﬁed
Panel: IPX4
6 POWER SUPPLY & POWER CONSUMPTION
(1) Power Supply 24/32 VDC (21 ,6 w 4I.6 VDC)
(2) Voltage and Current XN12A(24rpm): 24VDC/5.2A, 32VDCI3.9A
XN12A(48rpm): 24VDC/5.3A, 32VDC/4AA
XN13A(24rpm): 24VDC/63A, 3ZVDC/4.7A
(3) Power Consumption XN12A(Z4rpm): 105 W to 125 W000 kt)
XN12A(48rpm): 120 W to 140 W(70 kt)
XN13A(24rpm): 115 W 1.0 150 W(100 k!)
7, DIMENSIONS AND MASS
See the Outline Drawings
8. CORTING COLOR
(I) Display Unit Panel: N3.0
Chassis: 2.SGY5/1.5
(2) Scanner Unit N95
F R FR-72
(6) Tuning Automatic or manual
(for-manual, seleetmanuzlmningonmmuandmnebymdcball)
(7) Receiver Front End MIC (Microwave 1C)
(8) Bandwidth Tx pulselength 0408 us and 0.3 ps: 25 MHz
Tx pulselangth 0.8 us: 3 MHz
(9) Duplexer Circulator wiﬂl diode limiter
4. DlSPLAY UNlT
(1) Indication Systnm PP] Daylight display, raster scan, 8 colors
(2) Picture Tube 12 inch rectangular (184 mm x 245 mm) monochrome CRT
eﬁ‘ecﬁve display ammoxethxn 180mm
0 125
00625 0-.1250 0.125 0-25 0.250-5.-1u2
4ﬂllﬂ ll?llﬂl|llllll
(4) Markers H-eading Line, Bearing Scale, Range Rings,
Variable Range Marker (VRMI, VRMZ),
Electronic Bearing Line (EBLl, 531.2),
Tuning Bar, Cursor, Parallel Cursor,
Alarm Zone, Waypoint Mark (navigniion input required),
North Mark (heading sensor input required)
(5) Alphanumeric lndicaﬁms Range, Range Ring Interval, Pulselengtli(SP, MP, LP),
Display Molina-TU, CU, NU, TM), lnurfemwe Rejealonakl, in, ms),
Variable Range MarkeﬁVle, VRMZ),
Electronic Bearing Line (EBLl, EBLZ),
Automatic A/C SEA (A/C AUTO), Stand-by (ST-BY),
Radar Alarm (CRIN). (“OUT"), WACm),
Echo Stretch (ESl, ESZ), Cursor Range, Bearing or L/L Position,
Echo Trailing (TRAIL), Trailing Time, Trailing Elapsed Time,
Navigation Dara(navigaﬁon input required),
Heading (HDC, lmadirlg sensor input required)
lzlmss 48515
nun
(6) Input Data NMEA0183 (Ver 1 5/10), current loop
Own ship’s position: GGA>RM(>RMA>GLL (GLL is available Ver, 1.5 only)
Speed: RM(>RMA>VTG>VHW
Heading (True): H]J‘l>i-iDG”>l-DM">VHW>VHW"
Heading magnetic): l-lDM>HDG">1-llJT">Vl-lw>v1-lw"
Course (T me): RMC>RMA>VTG
Course (Magnetic): VTG>RMC>RMA
INDEX
“
A N
A/C RAIN 2-5 . .
A/C SEA 24 naVigation data 3-3
. . . nonh marker 2—6
acqutsmon area 6-2
alarm 34 north-up 2—6
auto plotter 6-2 0
B off center 2-9
bearing 2-7 P
blind sector 4-2 pulselength 3-2
C R
course-up 2-6 range 2-4
cursor 2—7 radar interference 3-2
CPA 6-2 S '
E SART iii
EBL 2-7 second-trace echoes 3-8
EBL offset 2-8 self test 5-3
echo trail 3-4 sensitivity 2-4
echo stretch 2-6 shadow sectors 4-2
echonomy mode 2-3 side-lobe echoes 4»1
F stand-by 2-3
function keys 3-8 T
fuse 5-1 target data 6—5
G target position 3-8
guard alarm 3-4 TCPA _6__5
transmitting 2—3
guard zone 3-5 A
troubleshooting 52
H true motion 2-6
head«up 2-6 V
head'n 1: 2—6
I l g mar er vector 6—6
index lines 3—1 hm
indirect echoes 4-2 Wm an 36
M zoom 3-6
magnetron 5-3
multiple echoes 4—1
FU O
9. COMPASS SAFE DISTANCE
(1)
(2)
10. ARF’ MODULE (OPTION)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
Display Unit
Scanner Unit
Standard: 1.1m Steering: 0.8 in
Standard: 1.7 m Steering: 1.3 m
Acquisition Range 0.2 to 16 NM
Tracking Rang 0.1 to 16 NM
Maximum Number of Target 10
Acquisition Time Within 5 sec (scanner rotation. 24 rpm)
AlannTiming Losttargetwlinkmaﬂgcollision alert)
Vectnrlmgth 30 sec; 1,3,6or 15min(selectedonmenu)
Plotting Interval 30 sec; 1, 2, 3, 4 or 5 min (selected on man!)
Numeric Data Indication Distance, Bearing, Course, Speed, CPA, TCPA
Acquisition Available Speed 100 kt relative
-_ .n
FR-
FMIEMJNQD
OPERATBR'S MANUAL
MARINE RADAR
ﬂ FURUNO ELECTRIC co, LTD.
NlSHlNOMlYA.JAPAN

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Create Date                     : 2001:05:06 15:22:51
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Title                           : 77820.pdf
Modify Date                     : 2001:05:06 15:23:30-04:00
Page Count                      : 54

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Furuno USA 9ZW7252 User Manual 77820

Furuno USA Inc 77820

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