Japan Radio NKE2102 Marine Radar User Manual Manual 2 of 4

Japan Radio Co Ltd. Marine Radar Manual 2 of 4

Manual 2 of 4

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Document Description	Manual 2 of 4
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Date Submitted	2003-09-29 00:00:00
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3.5 General Operation
3.5.1 Eliminating radar interference [MENU]
If radar interference occurs, take the following steps to set an interference elimination level:
(a) Press the [MENU] key to display MENU .
(b) Select | BASIC and then INTERFERENCE | pressing the [JOG DIAL] or [ACQJENH
key after each selection.
(0) The menu below is displayed. Select OFFL | IR1 |, IR2 [ or m3 and then press the
[JOG DIAL] or [ACUENT] key to determine the selection.
INTERFERENCE
OFF
IR1
IR2
IR3
Note
The interference elimination levels are IR1 | —» IR2 —» IRS starting with the lowest level.
However, if the set level is too high, a problem such as lhe decrease of sensﬂivily occurs The lowest
level IR1 should be selectedlorgenereluse,
3.5.2 When it is raining or snowing [AUTO-RAIN]
ACAUTION
Do not set the rain/snow duller function to too high a suppression level.
® Otherwise, not only echoes from rain/snow but also the targets of ships or
dangerous objects are suppressed, which may disturb the detection.
Set the best suppression level whenever you use the ran/snow cluner suppression
function.
When it rains or snows. echoes (rain clutters) ﬁrom rain or snow are displayed on the PPI screen
As a result, the images of echoes from ships or the likes are difﬁcult to observe.
Use of the manual or automatic rain/snow clutter function suppresses rain clutters and makes it
easy to observe targets.
While the automatic rain/snow clutter function is working, the manual rain/snow clutter function
(control) cannot be used.
To select the manual or automatic rain/snow clutter function of this radar, operate the
[AUTO-RAIN] control. When the automatic rain/snow clutter suppression function is ON, "A
RAIN" is displayed on the upper right of the screen.
(3) Switching the rainlsnow clutter suppression mode
If manual rain/snow clutter suppression is currently selected, pressing the [AUTO-RAIN]
control key changes to automatic rain/snow clutter suppression. If auto rain/snow clutter
suppression is currently selected, pressing the [AUTO-RAIN] control key changes to manual
rain/snow clutter suppression. The automatic rainlsnow clutter suppression mode and
manual rainlsnow clutter suppresslon mode are switched back and forth each time the key
is pressed.
(b) Turning the ralnlsnow clutter control
If manual rain/snow clutter suppression is currently selected, as the rain/snow clutter control
is turned clockwise, the rain/snow clutter suppression flirtation works more stroneg
3.5.3 When the sea ls rough [AUTO-SEA]
ACAUTION
Do not set the sea duller suppression funclion to a level at which it clears all sea
clutters in short range.
Olhemiss, not only echoes from waves but also lhe targels of ships or dangerous
objects are suppressed, which may disturb lhe delection.
Set lhe besl suppression level whenever you use the sea clutter suppression
function.
If the sea becomes rough, echoes (sea clutters) ﬁrom waves are displayed on the PPI screen. As a
result, the images of echoes from ships or the likes are difﬁcult to view. Sea clutters appear more
clearly in shorter ranges.
Use of the manual or automatic sea clutter function suppresses sea clutters and makes it easy to
observe targets.
While the automatic sea clutter function is working, the manual rain/snow clutter function
(control) cannot be used.
To select the manual or automatic rain/snow clutter function of this radar, operate the
[AUTO-SEA] control. When the automatic sea clutter suppression function is ON, "A SEA" is
displayed on the upper right of the screen.
(a) Switching the sea clutter suppression mode
If manual sea clutter suppression is currently selected, pressing the [AUTOSEA] control key
changes to automatic sea clutter suppression If auto sea clutter suppression is currently
selected, pressing the [AUTO-SEA] control key changes to manual sea clutter suppression.
The automatlc sea clutter suppression mode and manual sea clutter suppression mode
are switched back and forth each time the key is pressed.
(b) Turning the sea clutter oontrol
If manual sea clutter suppresm'on is currently selected. as the sea clutter control is turned
clockwise, the sea clutter suppression function works more strongly.
46
3.5.4 Using the trackball [TRACK BALL]
rl'RACK BALL] enables you to easily measure a distance to a target and the hearing at the same
time
Operate [TRACK BALL] to position the cursor to the target The distance to the target and the
bearing are displayed at the light bottom of the screen.
If a navigator such as a GPS is connected, the latitude and longitude at the target position can
also be displayed.
Cursov
270 9°
Trackbal I
180
wrsor 45.0' R
Position A000”
In thls case, the target Is at a position 4 NM lrom the own ship.
47
3.5.5 Using VRM [VRM1NRM2], [JOG DIAL]
VRM is a line for measuring a distance to the target that is displayed on the PPI screen,
Since the size of the circle of VRM can be changed freely through [JOG DIAL], a distance to an
arbitraly target can be measured
This radar can display 2 W5 (V'RM#1 and VRM#2) concurrently.
1h display, select, or erase VRM#]./VRM#2, use the [VRMINRMZ] key.
The VRM status is as followsZ
Neither VRM#1 nor VRM#2 is displayed.
VRM#1 is displayed, and VRM#2 is not displayed.
VRM#2 is displayed, and VBM#1 is not displayed
Both VRM#1 andVRM#2 are displayed.
Use the following methods to select each state above?
How to operate the [VRM1NRM2] key
Use the [VRM1NRM2'] key to switch between VRM#1 and VRM#2 and turn ON/OFF
VRM#1/VRl\/I#2.
1. Selecting VRM#1NRM#2 [VRM1NRMZ]
If neither V'RM#1 noi- VRM#2 is displayed, VRM#1 or VRM#2 can be selected/displayed by
pressing the [VRM1NRM2] key.
If both V'RM#1 and VRM#2 are displayed, VRM#1 and VRM#2 are selected back and forth by
holding down the [VRM1NRM2] key.
The currently operable VRM#1/VRM#2 is shown with the VRM value reversed enclosed in
broken lines at the upper right of the screen
2. Operating VRM#1NRM#2 [VRM1NRM2]
The VRM speciﬁed in 1 is operable,
Aﬂer specifying the VRM you want to operate in 1, press [JOG DIAL] several times until the
jog dial mode display at the right bottom of the screen changes to "JOG VRM."
[JOG DIAL] enters the VRM operation mode
In this status, the VRM can be zoomed in/out
“in-ling [JOG DIAL] clockwise "moms in” the VRM.
Turning [JOG DIAL] counterclockwise "moms out" the VRM.
3. Eraslng VRM#1NRM#1 [VRM1NRM2]
Ifboth VRM#1 and V'R.M#2 are displayed, press the [VRM1NRM2] key to reverse the value of
V'R.M#1/VRM#2 you want to retain on the screen. In this status, pressing the [VRM1NRM2]
key erases the non-reversed V'RM.
If only VRM#1 or VRM#2 is displayed, press the [VRM1NRM2] key to reverse the value of
V'RM#1/V'RM#2, It is enclosed in broken lines.
In this status, pressing the [VRM1NRM2] key erases the non'reversed V'RM.
48
4. Measuring the distanoefrom own ship using VRM#1 [VRM1NRM2]
(a) Press the [VRM1NRM2] key to reverse the value of VRM#1.
(b) In this status, turn [JOG DIAL] to adjust the Line of VRM#1 to the target, and read the
value of VRM#1 to measure the distance to the target.
Tm
In the ﬁgure above, the distance from the own shlp to the target Is 4 NM.
5. Measuring the distance from own ship using VRMM [VRM1NRM2]
(a) Press the [VRM1NRM2] key to reverse the value of V'RM#2.
(b) In this status, tum [JOG DIAL] to adjust the line of VRM#2 to the target, and read the
value ofVRM#2 to measure the distance to the target.
——Caution
0 If EBL2 is in ﬂoating EBL mode, the center of VRMZ Is the fulcrum of EBL2.
49
VRMZ display with EBL2 In ﬂoating EBL mode
6. Seming KM as range unlts
The range units oI‘VRMl or VRMZ can be switched to m or NM.
The range units can be set for VRMI and VRMZ separately
The units "KNP' or "NM'I is displayed following VRMl/VRMZ
hike the following steps to select the range units afVRM:
(a) Press the [MENU] key to display MENU
(b) Select DISP OPTIONS and then VRMl UNITS or VRMZ UNITS pressing the
[JOG DIAL] or [ACWENT] key after each selection.
(0) The menu below is displayed ’1\1rn [JOG DIAL] to select m or NML and then press
the [JOG DIAL] or [AGO/EMT] key to determine the selection.
DISP OPTI S
VRMZ UN l TS
NM
Surﬁng of the units of VRMZ
50
3.5.6 Using EBL (electronic bearing cursor) [EBL1IEBL2], [TRACK BALL]
EBL (electronic bearing cursor) is a line for measuring the bearing of the target that is displayed
on the PPI screen.
Since the angle of the line of EBL can be changed freely through [JOG DIAL], the bearing of an
arbitrary target can be measured
This radar can display 2 E1315 (EBL#1 and EBL#2) concurrently
To display, select, or erase EBMUEBMZ, use the [EBL1IEBL2] key.
EBL is displayed on the right side of the screen (horizontal display), or it is displayed in the
numeric value display area at the bottom of the screen (vertical display). Operable EBL] or
EBL2 is reversed
The EBL status is as follows:
Neither EBI#1 nor EBIItZ is displayed.
EBI#1 is displayed, and EM is not displayed.
EBIJfZ is displayed, and EBIIﬂ is not displayed.
Both M1 and EBLW are displayed.
Use the following methods to select each state above!
How to operate the [EBL1IEBL2] key
Use the [EBL1IEBL‘I] key to switch between EBI#1 and EBMZ and turn ON/OFF
EBlﬂl/EBIJI‘Z.
1. Selecting EBL#1IEBL#2 [EBL1IEBL2]
If neither EBMI nor EBI#2 is displayed, EBl.#1 or 131sz can be selected/displayed by
pressing the [EBL1IEBL2] key.
If both EBI#1 and EBI.#2 are displayed, EB1#1 and EBI.#2 are selected back and forth by
holding down the [EBL1IEBL2] key.
The currently operable EBI#1IEBL#2 is shown with the EBL value reversed enclosed in
broken lines at the upper right of the screen.
2. Operating EBL#1/EBL#2 [EBL1IEBL2]
The EBL speciﬁed in 1 is operable.
After specifying the EBL you want to operate in 1. press [JOG DIAL] several times until the jog
dial mode display at the right bottom of the screen changes to "JOG EBL."
[JOG DIAL] enters the EBL operation mode.
In this status, the EBL can be turned.
Ming [JOG DIAL] clockwise turns the EBL "clockwise."
Turning [JOG DIAL] counterclockwise turns the EBL "counterclockwise."
3. Erasing EBL#1IEBL#2 [EBL]
If both EBIﬁl and EBI#2 are displayed, press the [EBL] key to reverse the value of
EBMIEBM you want to retain on the screen. In this status, pressing the [EBL1IEBL2] key
erases the non-reversed EBL.
51
If only EBI#1 or EBLQZ is displayed, press the [EBL] key tn reverse the value of
EBDtl/EBHtZ
In this status, pressing the [EBL1IEBL2] key erases the non'reversed EBL.
4. Measuring the hearing from own shIp uslng EBL#1 [EBL1IEBL2]
(a) Press the [EBL1IEBL2] key to reverse the value of EBL#1.
(b) In this status, tum [JOG DIAL] to adjust the line of EBL#1 to the target, and read the
value of EB].#1 to measure the hearing to the target.
5. Measuring the bearing from own ship using EBL#2 [EBL1IEBL2]
(a) Press the [EBL1IEBL2] key M) reverse the value of EBL#2.
03) In this status, tum [JOG DIAL] to adjust the line of EBL#Z to the target, and read the
value of EBMZ to measure the hearing to the target.
In this case, the target Is at a position of the relative bearing 45 degrees from the own shlp.
6. Uslng EBLz as a floating EBL
EBL2 can be used as a ﬂoating EBL (eccentric EBL).
Take the following steps to plane EBL2 in ﬂoating EBL mode.
Operate [TACK BALL] to determine the fulcrum of EBLZ.
(a)
(b)
(c)
(d)
Press the [MENU] key to display
ml
Select | DISP OPTIONS
and then
“DATING EBL
pressing the [JOG DIAL] or
[ACQIENT] key alter each selection.
The menu below is displayed ’l\1m [JOG DIAL] to select
DIAL] or [ACQIENT] key to determine the selection.
52
ONI, and then press the [JOG
DISP DPHONS
FRDATWG EBL
As shown in the ﬁgure below, EBL2 moves to the cursor position. If VRMZ is displayed at the
same time, the center ofVRMZ also moves to the fulcrum of EBL2.
With EBL2 being placed In ﬂoating EBL mode
7. Settlng EBL display
EBL can select true hearing or relative bean‘ng.
True bearing means that the EBL bearing viewed from the own ship indicates the absolute
bearing on the earth
Relative bearing means that the EBL bean‘ng viewed ﬁrom the own ship indicates the relative
bearing between the own ship and EBL.
— Caution
0 True bearing and relative bearing are switched for both EBL1 and EBL2.
Thus, they cannot be set for EBL1 and EBL2 separately.
If true bearing presentation is selected, the value of EBL is displayed following by “T" If
relative bean'ng presentation is selected, the value of EBL is displayed following by "R."
53
“aka the following steps to switch between the relative bearing and true bearing ofEBLi
(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS and then EBL BEARING | pressing the [JOG DIAL] or
[ACWENT] key after each selection.
(0) The menu below is displayed 1mm [JOG DIAL] to select RELATIVE or and
then press the [JOG DIAL] or [ACWENT] key to determine the selection.
DISP OPTiONS
EBL BEARWG 7
RELATWE
3.5.7 Changing the bearing presentation method of the PPI screen [AZI MODE]
The following three bearing presentation methods are available for the radar PPI screen:
(a) Relat‘we bearing presentation (Head Up)
Relative bearing is presented with the heading just above (at 0‘ of bearing marker) the PPI
screen.
When the ship's heading changes, the bearing of the echo image on the PPI screen also
changes.
If bearing information cannot be received from a navigator such as a gyrooompass, this relative
bearing presentation is applied.
To place the screen in Head Up mode, press the [AZI MODE] key on the keyboard several times
until the display at the upper left of the screen changes to "HU'R"
(b) True bearing presentation (North Up)
hue bearing is presented with " 01th" as due north of the PPI screen
Even if the ship's heading changes, the bearing of the echo image on the PPI screen does not
change.
(A device such as a gyrocompass is necessary for getting bearing information.)
‘lb place the screen in North Up mode, press the [AZI MODE] key on the keyboard several
times until the display at the upper leﬂ of the screen changes to "MIR"
(0) Course Up [AZl MODE]
The ship's heading at time of setting Course Up mode is presented with right above (at 0' of
bearing marker) of the PPI screen.
When own ship's course changes alter setting as Course Up mode, the bearing of the echo
image on the PPI screen does not change and the ship's heading marker turns by only the
change of the ship's heading.
When the course greatly changes, hold down the [AZI MODE] key to set the course again.
(Course up reset)
54
To place the screen in Course Up mode, press the [AZI MODE] key on the keyboard several
times until the display at the upper lett of the screen changes to "CUR"
——Caution
0 Course up reset is only available In Course Up mode.
Hold down the [AZI MODE] key except course reset mode, the mode is shifted to
gyro setting mode.
mm M th
N North “l
Display in North Up mods Display In Head Up mode Display In Course Up mode
0 The input of bearing information from the navigator is necessary for changing
the bearing presentation method of the PPI screen.
3.5.8 Changing the center of the PPI screen [OFFCENT]
A display in an arbitrary direction can he lengthened by moving the center (oﬁ center) of the PPI
screen.
1. Setting a position to which the center is moved
(a) Move the cursor to the position where you want to move the center of the screen.
(In) Press the [OFFCENT] key. The center of the PPI screen moves to the new position
2. Canceling the position as the new center
(a) 1h return the center of the screen to the original, press the [OFFCENT] key again. The
center of the screen returns to the original.
H.
Press [OFFCENT] key
55
Note
Even if the center of the PPI screen is moved, this radar does not erase the images on the PPI screen
including the display of trails and the likes.
You can observe the heading of another ship at any time by freely moving the center of PPI screen,
— Caution
0 The center of the PPI screen can be moved by up to 9m otthe maxlmum screen
radius. if the center Is moved by the allowable maximum into the SHM
direction, the observable range of targets In the heading directlon becomes too
small, which is dangerous.
The center of the screen should be moved into the SHM direction for short
observation such as conﬁrmation of another shlp's position.
3. Continuously movlng the center
To continuously move the center of the PPI screen, operate [TRACK BALL] while pressing the
[OFFCENTJ key When deciding a position as the new center, release the [OFFCENT] key
Moving of the center stops,
4. Canceling the position as the new center
Tb return the center of the screen to the original, press the [OFFCENT] key again The center
of the screen returns to the original.
3.5.9 Using the trail display function [TRAILS]
Displaying radar trails
The heading of another ship can be conﬁrmed by the trail length and direction This feature
assists in avoiding ship collision.
Timing trail display, continuous trail display, or combination of timing trail display and
continuous trail display can be selected for the trail length of the radar.
- Timing trail display 5
Avalue 30 to 59 seconds or 1 to 99 minutes can be set for the trail length.
' Continuous trail display I
The trail length is unlimited
- Timing trail display + continuous trail display 2
The trail length is set in combination of the two modes above.
Even while the trail display function is set to OFF, the trail storage function is always working.
Thus, you can display trail data through one-touch operation whenever you want to.
1. Setting the trail display function to ONIOFF [TRAILS]
(a) Press the [TRAILS] key. The display changes in the following sequence:
Display OFF —> display ON (timing trail display) —> display ON (continuous trail display)
—-> display ON (timing trail display + continuous trail display) —> display OFF.
56
2. Setting a trail interval [TRAILS]
(a) Hold down the [TRAILS] key to display the TRAJIS menul
(b) Operate [JOG DIAL] to select TRAE INTERVAL and then press the [JOG DIAL] or
[ACCUENT] key.
(0) The menu below is displayed. Tum [JOG DIAL] to set a value 30 to 59 seconds or 1 to 99
minutes, and then press the [JOG DIAL] or [ACQIENT] key to determine the setting.
TRML‘ TRAlLS
TRA l L INTERVAL
Caution
0 Because wake time may err by the rotation speed of scanner unit or the setting
timing, surely use this as a standard.
3. Clearing stored trall data [TRAILS]
(a) Hold down the [TRAILS] key to display the TRAHS menu.
(b) Operate [JOG DIAL] to select and then press the [Joe DIAL] or
[ACQIENT] key
(c) Select ON and then press the [JOG DIAL] or [ACQIENTJ key to determine the selection
TRAlLS TRA l LS
EB '
(d) The ON selected above is automatically changed back to OFF when the stored trail
data has been cleared
4. Setting a trail reference level (trail threshold) [TRAILS]
A trail reference level is used to determine whether to store trail data depending on the
strength of targets.
Alevel 0 to 15 can be set as a threshold
When level 1 is set, the data of all the targets displayed on the PPI screen is stored/displayed
As a higher level is set, the trail data of only smuger targets is stored/displayed.
Level 8 is usually set.
If sea clutters are strong and they are also stored/displayed, set a level higher than &
Conversely, if the trail data of weak targets is difficult to store/display, set a level lower than 8.
Take the following steps to set a trail refereme level (trail threshold):
57
(a)
03)
(c)
Hold down the [TRAILS] key to display the TRAILS
Operate [JOG DIAL] to select
[ACWENT] key
menu.
TRAIL REF LVL
and then press the [JOG DIAL] or
The menu below is displayed Select die threshold (level) you want to set, and then press
the [JOG DIAL] or [ACQIENT] key to determine the selection.
TRAlLS
mules win
5. Setting a trall storage suppression distance [TRAILS]
The trail storage suppression distance is a function not to store the data of trails in a speciﬁed
distance from the own ships
Use the function not to store the data of unnecessary trails due to wave splash when the own ship sails
To tum OFF the storage suppression function, set "0" in the procedure below:
Take the following steps to set a trail storage suppression distance:
(a) Hold down the [TRAILS] key to display the
(b)
Operate [JOG DIAL] to select
[ACQIENT] key.
TRAIL SUPRESS
TRAILS menu.
and then press the [JOG DIAL] or
(c) The menu below is displayed. Tum [JOG DIAL] to set a distance from the own ship in
which you do not want to some trail data, and then press the [JOG DIAL] or [ACQIENT]
key to determine the settings
mus
TRAIL SUPRES
mm—
TRAlLS
6. Settlng a range trail storage [TRAILS]
The range trail storage is a function not to clear the trail storage in temporarily observing a
range other than the present range at the time of the trail storage or the trail display.
Normal setting value is " LEAR“, and the trail is automatically cleared by switched the range
The trail is not automatically cleared even if the range is switched, set "KEEP" in the
procedure below.
Take the following steps to set a range trail storage:
(a)
(b)
(0)
Hold down the [TRAILS] key to display the
Operate [JOG DIAL] to select
[ACWENT] key.
RANGE TRAIL
TRAILS menu.
and then press the [JOG DIAL] or
The menu below is displayed Thrn [JOG DIAL] to select KEEP and then press the
[JOG DIAL] or [ACQIENT] key to determine the selection.
58
3.5.10 Using the target expansion function [MENU]
The image expansion function extends the images of echoes on the PPI screen into the angle
direction and distance direction
Cauﬁon
0 When the image expansion function is used, the echoes of two targets that are
close to each other In the distance direction (ahead/behind) and angle direction
may turn Into a single image on the PPI sereen.
1. Setting the target expansion function
Take the following steps to set the target expansion function:
(a) Press the [MENU] key to display MENU .
(b) Select BASIC and then TGT EXPANSION i pressing the [JOG DIAL] or [ACWENTJ
key alter each selection.
(c) The menu below is displayed. mm [JOG DIAL] to select E and then press the [JOG
DIAL] or [ACQIENT] key to determine the selection.
2. Canceling the target expansion function
To cancel the target expansion function, take the above steps changing step (c) as follows.
In step (0) above, select OFF and then press the [JOG DIAL] or [ACWENT] key to determine
the selection.
3.5.11 Changing the transmitter pulse length [GAIN/PL]
The transmitter pulse length can be changed in the range of 1.5, 3, or 6 nautical miles.
If a long pulse is selected, the images of echoes on the PPI screen are lengthened in the distance
direction. Conversely, if a short pulse is selected, the images are displayed reduced in size
(length).
Unlike the image expansion function, the above function displays the echoes when a pulse
becomes longer that have not been displayed previoust
Cauﬁon
Q When a longer pulse is selected, the echoes ottwo targets that are close to each
other in the distance direction (ahead/behind) may turn into a single Image on
the PPI screen.
59
Changing the pulse length
(a) Press the [GAlN/PL] control during transmission The pulse length display at the right
bottom of the screen changes. At the same time, the pulse length changes, and the size of
the echoes on the scleen changes.
3.5.12 Using the zoom function [MENU]
The zoom function can double the size of the PPI screen on the basis of own ship position.
Caution
O This function does not work when the 0.125 nautical mile range Is used.
1. Setting the zoom function
Take the following steps to zoom the area:
(a) Press the [MENU] key to display MENU .
(b) Select BASIC and then pressing the [JOG DIAL] or [ACQIENT] key after
each selection.
(c) The menu below is displayed. ’l\m'| [JOG DIAL] to select ON and then press the [Joe
DIAL] or [ACWENT] key to determine the selection.
0 The center of the PPI can be moved to a posltlon of 90% of the observation
range.
(e) The area is doubled with own ship as the center.
2. Canceling the zoom function
In step (0) above, select OFFI, and then press the [JOG DIAL] or [ACCVENT] key. The zoom
function is canceled and the screen returns to the normal display.
60
3.5.13 Highlighting a target by decreasing unnecessary noise (image processing)
[MENU]
Caution
Q Do not use this function to view the radar beacon, the START signal, or a target
moving at a high speed on the radar screen.
0 This function is used most suitably in TM mode.
When you use the function in RM mode, select N-UP or GUP. Use of the
function with H-UP may cause Images to be blurred.
1. Setting Image processing [MENU]
There are three types of image processing, PROCl, PROCZ, and PROCa.
PROClI
PROCZI
PROC31
Select PROCI when there is a target moving at a low speed.
The image of a relatively unstable target is highlighted and displayed in stable
state.
PROCl is effective for suppressing irregular signals like sea clutters.
However, the image of a target moving at a high speed dims.
Use PROCI in a range of 1.5 nautical miles or less as a rule of thumb.
Select PROCZ to display images in more stable state than "PROCI" does.
PROCZ is eﬁ‘ective particularly when there are many sea clutters.
Use PRDCZ in a range of 3 nautical miles or more as a rule of thumb.
Select PROC3 when a target is not displayed at the very limit of remote noise.
Use PROC3 in a range of 6 nautical miles or more as a rule of thumb.
Disadvantage of PROCS is that the target may be more difﬁcult to observe because
noise or the like also appears clearly
PROCI+32 PROCl is performed in a preset processing range (the processing range from own
ship), and PROC3 is performed outside the processing range (the processing range
or more).
Use PROCl+3 as navigation when you want to display a target at the very limit of
remote noise while performing PROCI that makes it easy to observe other ships
inﬂuenced by sea clutters in short range.
PROCZ+3¢ PROCZ is performed in a preset processing range (the processing range from own
ship), and PROC3 is performed outside the processing range (the processing range
or more).
Use PROCZ+3 as navigation when you want to display a target at the very limit of
remote noise while performing PROC2 that makes it easier to observe other ships
inﬂuenced by sea clutters in short range than PROCl does.
Take the following steps to set image processing:
(a) Press the [MENU] key to display MENU .
(h) Select | BASIC | and then PROCESS pressing the [Joe DIAL] or [ACQIENT] key alter
each selection.
61
(c) The menu below is displayed. Tum [JOG DIAL] to select PROCI
determine the selection
| new
| PROC3|,
2. Canceling image processing [MENU]
In step (c) above, select OFF
to cancel the image processing function
3. Setting an image processing range [MENU]
Take the following steps to select the pmcessing range of PROCI+3 or PROCZ+3Z
(a) Press the [MENU] key to display -
(b) Select BASIC and then PROC sw RANGE
key after each selection.
PROCl+3 or PROCZ+3J, and then press the [JOG DIAL] or [ACQJENT] key to
pressing the [JOG DIAL] or [ACQIENT]
The menu below is displayed. ’1\i.m [JOG DIAL] to set the range you want, and then
press the [JOG DIAL] or [ACWENT] key to determine the setting.
62
3.5.14 Switching true/relative motion display [TM/RM]
The motion mode determines whether to display the moving of the own ship and another target in
relative motion or true motion.
1. Switching the motion mode
(a) Press the [TMIRM] key. The screen display and function changes in the following
sequence?
nRMu qnmlqiicm" —>"RM“
RMj Relative motion This mode displays other targets in relative motion ﬁxing the own
ship to the center
Radar trails are displayed in relative motion.
TM: ’h'ue motion. This mode displays the own ship and other targets in true motion on the
screen with the earth being ﬁxed.
Radar trails are displayed in true motion.
CTM: True motion with own ship ﬁxed. This mode displays other targets in relative motion
ﬁxing the own ship to the center.
Radar trails are displayed in relative motion.
"Ii'ue motion display TM"
The ﬁxed position of own ship on the screen moves according to the ship speed and course. A
ﬁxed target like a land target is ﬁxed onto the screen, and an actually moving target moves on
the screen. The position of own ship is set to a position about 66% of the radius in the opposite
direction of the course on the extension of the ship's heading marker (SI-1M) when the true
motion display is enabled. The ship starts moving from the position according to the speciﬁed
own ship's speed and course
After that, when the own ship reanhes a position 66% of the radius in the opposite direction,
the own ship's position is automatically reset to the position at switching to the true motion
display.
Fixed onto the screen
Movi ng according to
the own ship‘ 5 speed
True motion display
2. Resetting own ship‘s position in true motion display (TM)
Reset method 1
Hold down the {I'M/RM] key.
63
The own ship's position is reset to the position at switching to true motion display, and the own
ship starts moving from the position.
Allowable combinatlons of azimuth modes and motion modes
Available azimuth modes vary depending on the motion mode.
Difference between TM and CTM
The CTM mode always displays TM-mocle images with the own ship as the center.
TM CTM
Own ship display True motion Fixed to the center
Another ship display True motion display Relative motion display
Image processing True motion True motion
Radar trails True motion display True motion display
OﬂLcenter 90% 90%
G4
3.5.15 Suppresslng the power consumption of the radar [MENU]
Use the intermittent transmitting function to suppress the power consumption
The transmitting state and standby state are automatically switched while the intermittent
transmitting function is used.
The intermittent transmitting function can freely set the periods of the transmitting state and
standby state.
Period of the transmitting state —> Set the number of times the antenna rotated.
Period of the standby state —> Set the time while the standby state is plaoed.
1. Using the intermittent transmitting functlon [MENU]
Take the following steps to use the intermittent transmitting function:
(a) Press the [MENU] key to display MENU .
(b) Select TX PLAN and then [TX PLAN | pressing the [JOG DIAL] or (accusml key
after each selection,
(0) The menu below is displayed. mm [JOG DIAL] to select and then press the [JOG
DIAL] or [ACQIENT] key to determine the selection.
TX PLAN
TX PLAN
OFF
When the intermittent transmitting function is turned ON, the transmitting state is placed
only while the antenna rotates the preset number of times. Similarly, the standby state is
placed only during the set time.
2. Canceling the intennlttent transmitting function [MENU]
In step (c) above, select OFFl and then press the [JOG DIAL] or [ACCMENT] key to determine
the selection.
Caution
O Cancelling is possible only when it is under transmitting state. it Is not possible
under standby state.
3. Setting the period of the transmitting state (the number of antenna rotations) [MENU]
Take the following steps to set the number of antenna rotations!
(a) Press the [MENU] key to display MENU
(b) Select and then TX PERIOD pressing the [JOG DIAL] or [ACQIENT] key
after each selection.
(c) The menu below is displayed. ’I\irn [JOG DlAL] to set the number of antenna rotations
for placing the transmitting state, and then press the [JOG DIAL] or [ACCMENT] key to
determine the setting.
65
TXPERIOD
1~99 SCAN
When the period of the txansmitting state is set, the transmitting state is placed only while the
antenna rotates the set number of times and then automatically switched to the standby state.
After the standby state is placed for the set time, it is switched to the transmitting state again.
Likewise, the two states are switched back and forth repeatedly
. Sening the period of the standby state [MENU]
Take the following steps to set the period of the standby state:
(a) Press the [MENU] key to display MENU .
03) Select TX PLAN and then | STBY PERIOD pressing the [JDG DIAL] or [ACQIENT]
key after each selection
(c) The menu below is displayed. ”him [JOG DIAL] to set the time for placing the standby
state, and then press the [JOG DIAL] or [ACQIENT] key to detemiine the setting.
uﬂ-sv
STBY PERl
When the period of the standby state is set, the standby state is placed only for the set time
and then automatically switched to the transmitting state. After the transmitting state is
placed while the antenna rotates the set number times, it is switched to the standby state
again Likewise, the two states are switched back and forth repeatedly.
66
3.5.16 Monitoring the heading of other ships (targets) [ALARM ACK]
A guard zone can be set for warning the invasion of other ships or targets.
There are two guard zone modes - one mode issues an alarm when a ship or target gets into the
speciﬁed guard zone, and the other mode issues an alarm when a ship or target gets out of the
speciﬁed guard zone.
Caution
O The volume of the alarm is the same as the volume of the buzzer. Be careful
that if the volume of the buzzer ls set too low. you may not recognlze that an
alarm is issued.
0 The alarm does not always respond to all targets. Thus, the alarm should be
used simply as an auxiliary device, and the operator herself/himself should
monltor the heading of other ships and targets with her/his eyes and ears.
1. Using the radar alarm [ALARM ACK]
Take the following steps to use the alarm function:
(a) Hold down the [ALARM ACK] key to display the ALARM menu.
03) Select ALARM and then i ALARM ZONE pressing the [JOG DIAL] or [ACQIENT] key
after each selection.
(c) The menu below is displayed. ’l\im [JOG DIAL] to select GUARD ZONE and then
press the [Joe DIAL] or [ACWENT] key to determine the selection.
AL
ALARM ZONE
OFF
GUARD ZONE
ATA GUARD RING
Nole
Select ATA GUARD RING only when you use the optional MARPA function.
2. Cancellng the radar alarm function
In step (c) above, select OFF and then press the [JOG DIAL] or [ACQIENT] key to determine
the selection.
3. Creating a radar guard zone [ALARM ACK]
Take the following steps to create a radar guard zone for issuing a radar alarm?
(a) Hold down the [ALARM ACK] key to display the ALARM menu.
(b) Select ALARM I, GUARD ZONE and then SETTING pressing the [JOG DIAL] or
[ACWENTJ key after each selection.
(a) A line is displayed for setting a guard zone. Operate rl'RAcK BALL] to set the range and
the starting angle inside the guard zone, and then press the [JOG DIAL] or [ACWENT]
key
67
(d) Operate [TRACK BALL] to set the range outside the guard zone and the starting angle of
the guard zone, and then press the [JOG DIAL] or [ACWENT] key.
(e) Operate [TRACK BALL] to set the ending angle of the guard zone, and then press the
[JOG DIAL] m- [ACQIENT] key to determine the setting
Caution
VGUARD ZO
SETTING
0 Radar guard zone modes
There are two guard zone modes (invade and leave) - the Invade mode issues an
alarm when a shlp or target gets Into the speciﬁed guard zone, and the leave
mode Issues an alarm when a shlp or target gets out of the speciﬁed guard zone.
Note that the range speciﬁed as the radar guard zone is displayed only when the
radar is in transmitting state. It Is not displayed when the radar is in standby
state.
4. Setting a radar guard zone [ALARM ACK]
Take the following steps to set the mode that issues an alarm when a target gets into the
speciﬁed radar gimrd zone or when a target gets out of the speciﬁed radar guard zone:
(a) Hold down the [ALARM ACK] key to display the
ALARM menu.
(b) Select | ALARM
GUARD ZONE
and then
DIAL] or [ACQIENT] key alter each selection.
(c) The menu below is displayed. ’l\1.m [JOG DlAL] to select IN or OUT
the [JOG DIAL] or [ACQIENT] key to determine the selection.
GUARD ZONE
ALARM MODE
5. Setting a radar guard zone detection level [ALARM ACK]
Take the following steps to set the detection level of a guard zone:
(a) Hold down the [ALARM ACK] key to display the
ALARM menu,
ﬂu) Select ALARM
GUARD ZONE
and then
DIAL] or [ACCUENT] key alter each selection.
(0) The menu below is displayed. ’l\irn [JOG DIAL] to set an alarm level 0 to 15, and then
press the [JOG DIAL] or [ACQJENT] key to determine the setting.
GUARD 20
l W! "l | -
ALARM LEVEL
68
ALARM MODE pressing the [JOG
and then press
ALARM LEVEL pressing the [JOG
Caution
0 An alarm level 0 to 15 can be set as the volume ofthe alarm. As a lower value is
speciﬁed, the alarm responds to a weaker target.
Be careful that if a set alarm level is too high, the alarm may not work when it
should.
3.5.17 Resetting an alarm (stopping a warning) [ALARM ACK]
This section explains how to stop the alarm when an alarm is issued as a warning.
Stopping the alarm
Press [ALARM ACK] key.
The alarm stops.
3.5.18 Displaying parallel line cursors [MENU], [VRM], [EBL]
Parallel line cursors are displayed across the whole PPI display
When parallel line cursors are displayed, VRMZ and EBL2 are used to set the turning angle and
the spacing of parallel line cursors.
Displaying parallel line cursors
Take the following steps to display parallel line cursors:
(a) Press the [MENU] key to display MENU
(17) Select DISP OPTIONS and then PARALLEL LINE | pressing the [JOG DIAL] or
[ACQIENT] key alter each selection.
(0) The menu below is displayed. mm [JOG DIAL] to select @, and then press the [Joe
DIAL] or [ACQIENT] key to determine the selection.
DlSP OPHONS
PARALLEL L | NE
OFF
The parallel line cursors turn in the direction in which EBLZ turns.
The spacing of parallel line cursors can be changed in the direction in which VRMZ turns.
69
Parallel line cursor display
C.
Switchlng own ship display
Take the following steps to switch own ship's position information to the latitude/longitude
display or the time difference display:
(a) Press the [MENU] key to display MENU .
03) Select DISP OPTIONS and then POSITION pressing the [JOG DIAL] or [AWENT]
key alter each selection.
(0) The menu below is displayed Thm [JOG DIAL] to select for the latitude/longitude
display or El for the time diﬂ‘erence display of LORAN-C, and then press the [JOG
DIAL] or [ACWENT] key to determine the selection.
DISP OPTIONS
LL
3.5.22 Function to convert time difference display to latitude/longitude display
[MENU]
This function sets a value necessary when the own ship's position display is converted from the
conventional time difference display of DORAN-C to the latitude/longitude display
Setting LORAN-c values
Take the following steps to set LORAN-C information for switching to the latitude/longitude
display:
1. Settlng the LORAN chain (base station number)
(a) Press the [MENU] key to display MENU l
(b) Select l DISP OPTIONS | and then LL-TD CONV pressing the [JOG DIAL] or
[ACWENT] key after each selection.
(c) ’1\irn [JOG DIAL] to select LORAN-C GRI A
(d) The menu below is displayed. Mn [JOG DIAL] to select die chain you want, and then
press the [JOG DIAL] or [ACQIENT] key to determine the selection.
LLle CONV
LORANsC GR I
2. Selling time difference (T D1 or TDZ)
(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS and then LIrTD CONV pressing the [JOG DIAL] or
[ACQIENT] key after each Selection
(0) Turn [JOG mu to select DORAN-C TDl | or LORAN-C TDZ .
(d) Thrn [JOG DIAL] to set the value of ml or TDZ, and then press the [JOG DIAL] or
[ACQIENT] key to determine the setting
Setting TD1 (Select the item one case lower for TD2.)
3. Setting the correction value (of TD1 or TD2)
(a) Press the [MENU] key to display MENU .
(b) Select DISP OPTIONS | and then LL-TD CONV pressing the [JOG DIAL] or
[ACQIENT] key after each selection.
(c) ’1\im[JOGDIAL]toselect TDCOR.TD1 or TDCOR.TD2]
(d) 'lhrn [JOG DIAL] to set the correction value of TD1 or TDZ, and then press the [JOG
DIAL] or [ACQIENT] key to determine the setting
LLfTD CONV
TD COR lDl
Setting the correction value of TD1 (Select the item one case lower for TDZ.)
3.5.23 Cursor/own-ship position output function [CSR POS]
This function outputs the infomation of the bearing and distance from the current own ship's
position to cursor position.
The above information is output from the processing unit JSA
Outputting the bearing and distance from the current own ship's position to cursor position
(a) Press the [CSR P06] key
(b) The J8 outputs the cursor position datar (BSD)
Out-putting the bearing and distance when the am is the own ship's position.
(Outputs "bearing = U',"distanoe = 0")
(a) Hold down the [CSR POS] key.
(b) The J8 outputs the cursor position data. (BSD)
73
Caution
O The initial setting item determines whetherto oulpul the above data. For details,
see the initial selling item 9.8.29, "Setting a NMEA data output frequency
[MENU ."
74
3.6 Use of Function Keys
3.6.1 Overview
The purpose of function keys is to always get the best radar images by 3
- Storing and using complex radar signal processing settings in the optimum status by usage,
and
- Calling optimum signal processing settings for the sea conditions, weather, ship dimensions,
and the like
Four function key modes are available.
The four modes mean that four different signal processing and radar settings can be stored
separately.
In other words, as long as signal processing setting suitable for short-range observation, optimum
signal processing for trawling, and trail setting have been registered, each setting can be selected
instantaneously by simply pressing the [FUNC] key to switch to the model
As explained in the above, you can register any setting for functions 1 to 4. The following are 13
typical signal settings that can be selected:
OFF 5 Off
STAND 1 Setting for standard situation
COAST 1 Setting for coast navigation
DEEPSEA: Setting for deep-sea navigation
FISHNET 5 Setting for ﬁsh net detection
STORM 1 Setting for storm weather
CALM 2 Setting for calm weather
RAIN I Setting for rain/snow
BIRD I Setting for bird detection
LONG 1 Setting for long—range detection
BUOY 1 Setting for buoy detection
USERl 2 User setting 1 (Used for setting not included in the 11 settings above)
USERZ 5 User setting 2 (Used for setting not included in the 11 settings above)
The signal processing settings above are deﬁned in accordance with the titles Users can make
further detailed settings meeting their needs.
Emotions 1 to 4 are factory-set to the titles and signal processing settings as follows:
FUNCl 1 COAST
FUN02 i DEEPSEA
FUNC3 1 FISHNET
FUNC4 1 RAIN
75
3.6.2 Operation procedures
1. Calling a function
Each time the [FUNC] key is pressed, the cursor moves in the following sequence:
STANDARD —> FUNCI —> FUNCz —» FUNCS —> FUNC4 —> STANDARD
The title of the currently called mode is displayed at the upper right of the screen.
Suppose that signal processing settings are deﬁned for FUNCI with COAST as the title,
FUNCZ with DEEPSEA as the title, FUNC3 with FISHNET as the title, and FUNC4 with
RAIN as the title. Each time the [FUNC] key is pressed, the function titles are displayed at
the upper right of the screen in the order of COAST, DEEPSEA, FISHNET, and then RAINA
You can conﬁrm the currently selected function mode glancing at the screen,
2. changing the setting of a function key
You can change the settings of a function key just as when performing general operation.
After the title displayed at the upper right of the screen is switched by pressing the [FUNC] key,
settings made in that status are stored as they are.
For example, if FUNCI (COAST) is selected by pressing the [FUNC] key, the title COAST is
displayed at the upper right of the screen. This explains that the coast navigation function
mode is new active. Settings (e.g., signal processing settings and radar setting) made in the
mode are stored for FUNCl (coast navigation mode).
3. Changing a functlon key title
The title displayed at the upper right of the screen can be easily changed.
Perform the procedure below to change any of the factoryset titles previously mentioned
Take the following steps to change a function key title“
(8) Hold down the [FUNC] key to display the FUNCTION menu.
(b) The menu below is displayed Select the function key FUNCI to FUNC4 of which
title you want to change, and then press the [JOG DIAL] or [ACQIENT] key.
(c) The menu below is displayed Select MODE
[ACQ/ENT] key
MODE
FUNCTION
STANDARD
and then press the [JOG DIAL] or
(d) The menu below is displayed. Select the signal processing you want to set by turning
[JOG DIAL], and then press the [JOG DIAL] or [ACQIENTJ key to determine the setting.
You can select the settings of signal processing as shown below.
OFF 1 Off
STAND 1 Use for standard situation
COAST 2 Use for coast navigation
DEEPSEA! Use for deep-sea navigation.
FISHNET I Use for detecting ﬁsh nets.
STORM 1 Use for storm weather.
CAIM I Use for calm weathen
RAIN 2 Use for strong rain/snow.
BIRD 1 Use for detecting birds ﬂying on the sea.
LONG I Use for detecting weak targets in longrange.
BOUY I Use for detecting the radio bouy
USERl 1 Set it as free uses other than the above.
USERZ I Set it as free uses other than me above.
STANDARD
4. Initializing the setting of a function key (Retumlng to the factory settlng)
If you are confused making various settings or want to make a new setting, you can return the
current setting to the factory setting for each function mode.
Takethelioﬂowingstepstoinitialimthesetﬁngofafunctionksyﬁ
(a) Take steps (a) and (b) in 3 above, select INI’I‘IAIJZE I, and then press the [JOG DIAL] or
[ACWENT] key.
(b) The menu below is displayed. Select YES 1 and then press the [Joe DIAL] or
[ACWENTJ key to determine the selection.
Only the above items can be set in the FUNCTION menu. All the other menus are only for
conﬁrming the settings. The following shows FUNCTION menu lists:
77
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78
3.7 Other Procedures Required
3.7.1 Conﬂnning software verslons [MENU]
The versions of software installed in the processor, antenna, and operation unit can be displayed.
[fa failure occurs, inform our engineer of the software versions as well as details on the failure.
Take the following steps to conﬁrm the soﬁware versions:
(a) Press the [MENU] key to display MENU
(b) Select INFORMATION | and then SOFTWARE VER pressing the [JOG DIAL] or
[ACWENT] key alter each selection
The software versions are displayed as shown below.
SOFTWARE VER
3.7.2 Conﬁrming the operating status of connected units [MENU]
The status of the units (sign the processor, antenna, and operation unit) currently connected to
this radar can be displayed.
If a failure occurs, inform our engineer of the unit connection status as well as details on the
failure.
Take the following steps to conﬁrm the unit oomiection status:
(a) Press the [MENU] key to display MENU .
(b) Select INFORMATION | and then PORT CONNECT | pressing the [JOG DIAL] or
[ACWENT] key alter each selection.
The unit connection status is displayed as shown below.
79
3.7.3 Displaying magnetron current [MENU] [+RANGE-1
The current value of magnetron is displayed. The status of magnetron can be interpreted by the
value.
Take the following steps to display magnetron current.
(8) Operate the [+RANGE-1 key to set 48 mile.
When the range is already set to "48NM", this operation is not necessary.
Oi) Hold down the [MENU] key to display the INSTALLATION menu, select RADAR
RADAR ADJUST and MAG] and press the [JOG DIAL] or [ACQIENT] key.
(0) A value and bar "III" is displayed, you can interpret the magnetron status by the
value.
The bar shakes according to the following value.
From 12 to 24
From 26 to 37
From 38 to 50
From 51 to 63
From 64 to 76
From 77 to 89
From 90 to 102
From 130 to 115
From 116 to 127
Inthecaseof4kwi MmGOtDSO II II~I
I (Approximately)
Inthecasecd'kai Hom70to90 II
I (Approximately)
hithecaseoflokwi me70w90 II IINII
I (Approximately)
The shaking bar may be shiﬁed, even if it is a new magnetron.
Certainly use this display as a referenoe.
80
3.7.4 Conﬁrming error logs [ALARM ACK]
If any of the sensors malfunctions, the error log function lists faulty locations.
If a failure occurs, inform our engineer of the error log contens as well as details on the failure.
Take the following steps to conﬁrm error logs:
(a) Hold down the [ALARM ACK] key to display the ALARM menu.
03) Select ERRORLOG
and then press the [JOG DIAL] or [ACQIENT] key.
Error logs are displayed as shown below.
Error list
ERROR LOG
BACK
When a error occurs, the following error is displayed at the lower right of the screen, and is
saved in the error log
When you connect to our company or an agency, tell contents of the error log at the time of
failure.
TRX
TRX'DATA
PANEL
PANEL DATA
PANELZ
PANEL2 DAT
GPS
GPS DATA
GPS STATUS
COMPASS
COMP DATA
PC
PC DATA
NSK
NSK DATA
GYRO
IDG
GPS COMP
GCOMP DATA
TEX-HEATER
No communication error with transmitter or receiver
Data error with transmitter or receiver
No communication error with control unit
Data error with control unit
No communication error with suboontrol unit
Data error with suboontr-ol unit
No communication error with GPS equipment
Data error with GPS equipment
Status error with GPS equipment
No communication error with magnetic compass equipment
Data error with magnetic compass equipment
No communication error with personal computer
Data error with personal computer
No communication error with N SK unit
Data error with NSK unit
Status error with NSK unit
Status error with NSK unit
No communication error with GPS compass
Data error with GPS compass
Heater error of transmitter or retriever
81
TRX-MHV Moduration error of transmitter or reciever
SSW OFF Safety switch OFF of scanner unit
TRX-HL Standard rotation signal error of scanner unit
TRX-AZI Rotation signal error of scanner unit
TRX-RE'V Reverse rotation error of scanner unit
TRX-TRIGER hansmission trigger error of scanner unit
TRX’VIDEO Video error of scanner unit
PRC-HL Standard rotation signal em of display unit
PRC'AZI Rotation signal error of display unit
PRC-NIGER Trigger signal error of display unit
PRC-VIDEO Video signal error of display unit
3.7.5 Clearing the error log [ALARM ACK]
Thke the following steps to clear the error log.
(a) Hold down [ALARM ACK] key to display the ALARM menu.
(b) Select ERROR LOG CLRI, and then press [JOG DIAL] or [ACQIENT] .
(c) The menu below is displayed. Thrn [JOG DIAL] to select E and then press the [JOG
DIAL] or [ACQIENT] key to determine the selection.
3.7.6 Operating the self-diagnostlc function [MENU]
The self-diagnostic function is installed to activate the self-diagnostic mode aﬁel- the power is
tumed on.
This function gets the system to automatically diagnose itself for normal operation.
Take the following step to start the selfdiagnostic function!
(a) ’1\1rn on the power while pressing the [EBL] and [VRM] keys at the same time.
The self-diagnostic function starts.
3.7.7 Displaying the help menu
The HELP function is installed to explain keys for operating special functions when the power is
turned on.
Take the following steps to operate the HELP function:
(a) Hold down the [MENU] key to display MENU .
(b) Operate [JOG DIAL] to select
HELP
and then press the [JOG DIAL] or [AﬁQ/ENT] key.
As shown below, die keys for operating special functions are displayed in two lists when
the power is turned
82
3.7.8 Replacing lhe battery (BT1)
The battery (BT1) needs to be replaced regularly to hold the set information.
(a) Replacing the battery (BT1)
The battery is provided in the main control circuit (CMC’1190).
The battery model is CR2477-1VC.
Ask the nearest sales agent to replace the battery
(b) Initial settings alter battery replacement
- Even if the power is turned off, the settings of menus and soﬁware keys are held
through this lithium battery. Consequently, when the power is turned on next, the
radar is operable in the status in which it was most recently used.
- When the battery reaches the end of its useful life, all the settings including menus are
automatically reset.
Therefore, the initial settings need to be made again atter battery replacement.
Caution
0 When the battery nears the end of its useful life, the range and bearing may not
be measured correctly.
Replaee the battery immediately, and make the initial settings.
(c) If the battery cannot be replaced immediately as ﬁrst-aid measures, make the initial
settings each time you turn on the power. In this case, note that all the settings are reset
when the power is turned off.
O For the initial settings, see 9.7, “IniﬁalizaiionJ’
83
3.7.9 Procedure if an incomprehensible symptom occurs during use of the radar
If a symptom such as the distortion of screen display or the refusal of switch operation takes place
dining use of the radar, peifbrm the initialization procedure below.
Caution
. When INITIALIZE Is executed, ENGINEERS MENU is initialized. However, the
contem stored by BACKUP MEMORY are not Inltlallzed.
0 When the battery for backup wears down, the contents stored by
BACKUP MEMORY are initialized.
(a) ’l\1rn on the power while pressing the [MENU] key and [ACQIENT] key at the same time
(b) The NO | and YES menu is displayed aﬁer the menu below Thrn [JOG DIAL] to
select YES and then press the [JOG DIAL] or [ACQIENT] key to determine the
selection.
WHMUZE ALL
3.8 Options
3.8.1 Operating a second keyboard unit [GAIN/PL] [JOG DIAL)
By adding the optional keyboard (NOE-7640), either of the two keyboards can be used
independently to control one antenna.
When one keyboard is being used, it will not be possible to use the other keyboard, with the
exception of a few functions (ego, the keyboard switching operation and changing from
transmission to standby).
Takethefollowingstepstoswitchbetweenkeyboardl andkeyboard2.
(a) Hold down the [GAIN/PL] key to display the following menu
PANEL CGN
PANELZ
(b) ’I\1rn the [Joe DIAL] to select I PANEL 1 | or PANEL 2 then press the [JOG DlAL] or
[ACWENT] key
(c) The menu below is displayed, Select YESL and then press the [JDG DIAL] or [ACQIENT]
key
(d) When a keyboard other than the one being used is selected from this status, only the
[GAIN/PL] key and [STBY] key will work The other keys will not function. In Order to
be able to use the current keyboard, repeat the above process from (a), then select a
keyboard other than the one selected in step (b) to set the current keyboard for operation
Note
Even if the keyboard cunentiy being used does not have the operating rights, the [STBY] key on the
keyboard will still be eiiective as explained above.
This is to allow either keyboard to immediately switch the system from transmission to standby when
there is an emergency
Therefore, a keyboard that does not have operation rights can switch the system to standby, but it
cannot change it back to the transmission mode. In order to return the system to the transmission
mode, either the keyboani with the operating rights should be used, or the above procedure from (8)
should be followed to acquire the operating rights, then switch the system to the transmission mode
85
AWARNING
Immediately alter switching the keyboards, the mom of the [GAIN/PL],
[AUTO-TUNE], [AUTO-SEA] and [AUTO-RAIN] knobs may be different from what
they were before switching. Sensitivity might also be lowered, and this could
cause a collision
Each time the active keyboard is switched, be sure to readjust the bur knobs
above so that they are at their optimum seﬂings.
86
Chapter 4 How to Interpret the PPI Screen
4.1 Height of and the Distance to the Target
The maximum distance to a target that can be observed with a radar depends not only on the
power of the radars transmitter, beam width of the scanner unit, and the receiver's sensitivity but
also on height of a target, distance to a target and height of scanner unit line etc. This is because
the radio wave emitted by a radar runs straight, undergoing no inﬂuence by the curvature of the
earth surface.
Earth
Radar $2,230“
az=2.28fhr
a. + $2.23 (flu 4» Ha)
an, 21. : Unit Nautical min]
in, h, : Unit Meters]
[Dlstanee and Target]
For example, when the scanner unit lies 3 meters above the sea level, the radar can detect and
display an island with a height of 10 meters at a distance 10 NM away from the scanner unit
position but cannot detect and display an island with a height of 5 meters at the same distance.
This is theoretically hue but does not always hold, depending on weather conditions.
For a target located 10 NM away to be displayed on a radar, it theoretically needs to be 7.6
meters or higher. Any targets lower than 7.6 meters cannot be displayed on a radar.
O the target may be unable to be observed when the height of a scanner unit or an
target ls low.
Island not displayed on the screen
harem) awaANM) hz (meters)
scanner mm height Distance Target height
87
4.2 Returns from a Target
The intensity of returns from a target is related not only to the size of the target but also to the
materials and shape of the components making up the target Accordingly, larger objects do not
necessarily develop strong returns
On coastlines, in particular, the intensity of returns is dependent on their physiegraphic features.
For a coastline with a fairly gradual ascent, only inland mountains areas may be displayed as
echoes This fact needs to be kept in mind when measuring the distance to a coastline.
0 Since the echo which returns from a coastline with a fairly gradual ascent is
weak, observallon of such land may not be able to be performed.
Mounmlnslhat are displace on the screen
Shorellmﬂmarermdispleyedomhesoteen —.
4.3 Propagation Path of Radio Waves
0 Radlo waves may be shielded if there is a large Inieroepﬁng obstacle (e.g.,
mountains, rain, san, etc.) in their propagatlon path and any targets behind the
obstacle cannot be observed.
An Island lhal is not dlsplayed A ship mm Is not displayed because of all
because 0! heavy rail in between island in between the own ship and me
lhe own ship and lhe island larget ship
4.3.1 Sea returns
On a wavy sea surface, an echo appears on the PPI screen as a bright defused image at the center
of the screen. This echo is developed by returns from the sea surface. The features of the echo
depend on the size and range of the wave, and the wind direction.
4.3.2 False echoes
There are cases in which nonexistent targets appear as echoes or in which existing targets do not
appear as echoes on the PPI screen. These echoes are called false echoes.
False echoes are produced by the factors explained below
0 Please observe carefully in consideration of there being always false echoes. J
(a) Ghost
Depending on the location where the scanner unit is installed, radio waves are emitted from
nearby chimney stacks or masts, developing ghosts. Consequently, targets that are located
in those direction may not appear as echoes on the PPI screen.
The presence of these ghosts can be identiﬁed by observing sea returns and checking me
returns for dim areas or voids.
If a ghost is detected, remember the direction in which it appears and observe the target
carefully
03) Side echo
There are cases in which an arcshaped broken line appears over the same
range as the echo from the target This image is caused by the side lobes
of the beam emitted ﬁrom the scanner unit. This type of false echoes can
eam'ly be identiﬁed if the target stands alone.
(c) Indirect echo
The direction of the radio wave “mm
from the radar may be changed by '
a reﬂection (secondary reflection) \
at a chimney stack or mast of a \‘v
ship, developing a false echo in a h/
direction in which there should be
no target.
The indirect echo developed by the H,“ who wane“ b,
secondary reﬂection appears in the t Rum wave changer Ila dumnn as 51 WNW ”km"
A . . ls reﬂeaed an a chimmy sum,
direction of the chimney stack or ﬁenleninaahhoocm
mast that reﬂected the radio wave.
"b
(d) Multiple echo
Multiple echoes are developed by multiple reﬂections caused by a building or large vessels
that has large vertical surfaces. These echoes are spaced at an equal interval, with the one
that is closest to the own ship being the true echot
False echoes
|l|le
Tr» who closes! lo the
Wu shpisths raaleche
(e) Radar interference
If there is a radar that uses the same frequency as that of the own ship near the own ship,
interferences caused by that radar appear on the PPI sateen. These interferences appear as
clusters of spots of varying patterns. Since they do not occur at the same location with lime,
they can easily be distinguished from true echoes.
Radar interferences can be reduced or eliminated by choosing "ON" from "FUNCTION”HZ".
[Examples of radar interferences]
90
4.4 Display of Radar Transponder
SART (Search and Rescue Radar Transponder) is life preserving device approved by GMDSS
which is used for locating survivors in the event of a disaster or distress. SART operates in the
9GHz frequency band. When it receives a radar signal (interrogating radio Wave) of 9GHz
transmitted by a rescue ship or aircraﬁ radar, SART transmits a series of response signals to the
searchers to indicate the distress position
In order to see the SART or radar beacon mark on the radar screen,
(D RANGESCALE iSelectGor 12nm
® SEA CLU'I'I‘ER oontrol : Set to minimum
® AUTO SEA zorr
(D TUNE control 5 DETU'NED to reduce the clutter
(5) IR : Set rR OFF
© PROCESS : Set PROCESS OFF
1,5 i
[Example]
Caution
0 When above settings ® to G) are made to display SART signals, objects
around the own ship will not appear on the radar screen, so perform thorough
visual monnorlng of the sea area around the own ship to avoid any collision or
stranding.
Further, when more than one radar systems are mounted, while using a SGHz
band radar for searchan SART signals, be sure to use another radar as an
ordlnary radar to perform monltorlng of objects around the own shlp to avold
any collision, check of the position of the own ship to avoid any stranding, and
so on.
Need to return the set for normal operation on completion.
91
Chapter 5 Maintenance and Inspection
5.1 General Maintenance
ADANGER
The customer should refrain from inspecting or repairing the intemal parts of this
equipment.
Inspection or repair other than by specialized service personnel may cause death
or a serious injury of any person.
Please contact the sales department of Japan Radio Co., Ltd. or your local brand-t.
outlet or sales othoe with respect to maintenance and repair:
n'ain power oft
If maintenance work is performed without shutting the main power oti, there is a
0 When performing maintenance in increment when please be sure to shut the
risk of dying or getting a serious injury of any person by electric shock.
——Caution
0 When cleanan the surface, please refrain from uslng organic solvents such as
thinner or benzene.
Use of such organic solvents may damage the surface coating.
When cleaning the surface, remove dust and grime and wlpe with a clean dry
cloth.
The following maintenance steps are required to ensure that the radar always operates in the
optimal condition. Since breakdowns will be reduced through maintenance, periodic
maintenance is recommended.
General maintenance steps common to all equipment are as follows.
Cleaning
Remove dust, grime and sea water that has adhered to the unit. Use dxy cloth to clean the
unit. In particular, use a brush to clean the ventilating opening to ensure smooth ﬂow of air.
92
5.2 Scanner Unit
ADANGER
the main power source.
lithe scanner suddenly rotates and it hits the human body violently, there is a risk
® When performing maintenance or inspection of the scanner unit, be sure to shut off
oi dying or getting a serious injury of any person.
the purposes of maintenance of inspection.
If exposured to electric waves at proximate distances, there is a risk of dying or
getting a serious injury of any person.
0 Be sure to shut oif the main power source when approaching the scanner unit for
(1) Radiation unlt
It‘the front of the radiation unit is soiled with soot, salt, paint specks. bird excrement or other
alien matter, electric waves may become attenuated and reﬂection may occur thus causing
degradation in the performance of the radar.
The radiation unit should be inspected and always kept clean by wiping with cloth soaked in
alcohol or water in the event of soiling.
Solvents such as gasoline, benzene, trichlene or ketone should never be used for this purpose
(2) Pedestal
The pedestal and attachment bolts of the scanner unit should be inspected periodically for
erosion and maintained to ensure safety. Painting is the best measure for preventing
erosion and it is recommended that this be undertaken once in halfa year
5.3 Display Unit
Cleaning the LCD
When dust adheres to the LCD, transparency degrades and the imagw become darkr
Cleaning is performed using doth soaked in water (ﬂannel or cotton). Wiping vigorously
with dry cloth or the use of gasoline or thinner should be avoided.
Caution
O Vigorous wiping with dry cloth or the use of gasoline or thinner should be
avoided In cleaning the LCD.
Such action may cause scratches and deterioration.
93
5.4 Special Parts
JMA-5104
Magnetron MSF1421B
Location of use JRC Code
5VMAAOOO49
Circulator
H'GAJRDOOOOI
6AJRD00001
Diode limiter NJ $6930
5EZAA00024
JMA-5106
Front end
Magnetron
NJT1028
Manufaduner
5EZAA00039
MSF1422B
New JRC
Circulawr
H'GAJ'RDOOOOI
Toshiba
A102
Diode limiter NJ86930
| New J'RC
Scanner unit 5EZAA00024
E301
JMA-5110
Front end
MSF1425B
NJT1969 New J'RC
Scanner unit 5EZAA00037
H-GAJRDOOOOI
NJ86930
5EZAA00024
NJT1969
94
5EZAA00037
5.5 Circuit Blocks for Repair
NKE-ZMZ
Name
Modulator cinzuit
Unii/ type of circuit
CM'E-322
Receiver
GAE-475
Motor unit
NKE—2062
Name
Modulator circuit
H~7BDRD0023
Unii/ type of circuit
7 (ME-323
Receiver
CAE‘475- 1
Motor unit
NKE-2102
Modulator circuit
CBP' 153
Unit! type of circuit
CPA-248
Receiver
GAE-4751
Motor unit
CBP-167
Power supply circuit
NBC-1230
Main control circuit
CBD>1645
CMC'1190
Unit/ type of circuit Remarks
Power supply circuit
CBD>1638
MARPA circuit
NCE-7640
Keyboard circuit
CDC-1144
Uniil type of circuit
CCK'892
Option
NWZ-14B
LCDu t
H-7WZNA0701
Power supply unit
CBF'3O
95
5.6 Actions to Deal with Abnormalities and Breakdown
In the case of semiconductor circuits, except in cases of problems in die design or inspection of
such circuits or causes that are external or caused by humans, breakdown or deterioration of the
circuit does not often occur. In general, the causes of breakdown that are relatively frequently
found are wire cut in the high resistance device due to high humidity, defect in the variable
resistance and defect in the contact of switches and relays
Moreover, in many cases the cause for breakdown is not a defect in parts but rather poor
adjustment (particularly inadequate tuning adjustment) or poor maintenance (particularly defect
in cable contact) and inspecting or readjusting these aspects is often eﬁ'ective in the case of
perceived abnormality or breakdown The following table should be taken into consideration in
the case of abnormalities or breakdown.
There is always a cause for a blown fuse and after replacing the fuse, it is necessary to investigate
the related circuits even when no abnormality remains However, consideration should be given to
the fact that there is signiﬁcant variance in the characteristics of ﬁzses,
CODdI on of he Breakdown Conceivable Cause
. Breakdown in the power supply terminal (CED-1638);
N th' th Fuse F1 has blown
LEDW “We“ °“ 9 . Breakdown in the NWZ-146 display
. Breakdown ofthe main Control circuit (CIVIC-1190)
r The electric power of the ship is inadequate.
a. Fuse F2 and F3 have blownb.
The scanner unit does not . Breakdown in the motor unit
mm (MA-51041 CML-674 H-7BDRD0023 inside the scanner unit,
JMA’5106/51105 CBP'l53/167)
. Breakdown of the receiver
(JMA-5104 GAE-475, JMA-5106/51102 CAE»475-1)
. Breakdown of the main control cilcuit (CMC'1190).
. . . . . , 9
The scanner unit mates What is the condition oftheitmnsmisslon trigger (TI).
but no radar image appears . Breakdown In the motor umt
(characters and markets (J'MA-51041 GIVE-674 H-7BDRD0023 inside the scanner unit,
are, however, displayed),
JMA-5106/51101 CBP-153l167)
. Breakdown of the modulator circuit in the scanner unit
(JMA'51042 OMB-322, JMA-51062 CME'323,
JMA—suo: CPA-24)
. If the switches do not work even after turning the power
on again, breakdown is in the main control drcuit
The operation switches do (CMC’llBO).
“0° Wk r Breakdown is in the panel circuit (cox-892)
. Cut in the cable connecting the operation unit.
(H-7ZCNA0855)
96
Chapter 6 After-sales Service
* When asking for repair
When a system failure is suspended, read Chapter 4, 5 and 9 carefully and re-check the
abnormal part.
If it is still considered to be a failure, stop the operation at once and consult with the dealer you
purchased the product, our sales department or your nearest branch or business ofﬁce.
0 Repair within the warning period
If the failure occurred under proper operation in accordance with the instruction manual,
the dealer or JRC shall repair the product without charging. In case of any other failure
occurred due to mis'operation or natural disaster, the repair work will be charged.
0 Repair after the warranty period has expired
If the product is recoverable by repairing, we will repair it upon your request
0 Items to be identiﬁed
it Product name, model name, manufacturing date and serial number
it Failure condition (as detailed as possible: see the Radar Failure Checklist on next
page.)
it Your company/organization name, location and telephone number
* Recommendation of maintenance inspection
Although it depends on your operating condition, the performance of the product may be
lowered due to parts wear.
We recommend maintenance inspection, apart from the normal maintenance work.
For maintenance inspection, consult with the dealer you purchased the product, our sales
department, or your nearest branch or business oﬂice.
Note that this maintenance inspection will be charged.
For detail of aftersale service, contact the dealer you purchased the product, our sales
department, or your nearest branch or business ofﬁce.
If‘Contact 1 See the list at the end of the manual
97
RADAR FAILURE CHECKLIST
When ordering for repair, check the following items, ﬁll in the sheet and send it to us.
Ifthere is any uncertain items, Contact your ship and give us correct information on the product,
Ship name : Phone : Fax :
Radar general model name : J'MA— Serial No :
(Write the full model name correctly)
(1) Check the following items in the order of the number, and cimle the applixzable answer
between YES or NO.
Ifthe item cannot be determined as YES or NO, explain in detail in the item (15), Others.
(2) If any of the items (1) through (4) is marked as N0, check the fuse of the product (refer to
Section 56 and 9A)
(3) Check the items (4) through (14) while the transmission (TX) is ON.
* Functions mentioned in the items (13) through (14) may be optional. Ifthe function is optional,
answer is not necessary.
No. Check Item Result
(1) Power can be turned on. (The lamp on the keyboard is lit.) YES NO
(2) £323?) minutes after poweringon, it will become stand-by status (TX YES N 0
y .
(3) When powering-on (or TX ON), the LCD displays something (LCD is lit). YES NO
(4) The scanner unit rotates at the transmism'on (X-MIT) ON. (Check the YES N 0
following items while transmission is ON.)
(5) 'l\ining is enabled (Check with the range ofGNM or more.) YES NO
(6) Fixed marker is displayed YES NO
(7) VRM is displayed. YES NO
White noise is displayed while set at SEA, RAJN minimum, GAIN
(8) maximum, IR-OFF and maximum range YES NO
(9) Target reﬂection echo is displayed YES NO
(10) Sensitivity of reﬂection echo is normal. YES NO
(11) EBL is displayed. YES NO
(12) Cursor mark moves YES NO
*(13) GYRO course can he set and normally displayed YES NO
lilo LOG speed can be normally displayed. YES NO
(15) Others {Error message etc)
98
Chapter 7 Disposal
7.1 Equipment Disposal
Dispose of this equipment by following the ordinances or regulations of the local authorities in
charge of the disposal site
7.2 Disposal of Used Batteries
AWARNING
Before disposing of used Iiihium batteries, insulate by afﬁxing laps to the positive
and negaﬁve terminals or by olher means. Otherwise. short—circuiting may occur,
resulting in heat generalion, bursting or ignition.
On this equipment, lithium batteries are used for:
ET] in the CPU control circuit (CMC-1190) (Sanyo electric CR2477-1VC).
Q Do not keep used lithium batteries hut dispose of them immediately after as non-combustible
waste.
0 Before disposing of used lithium batteries, insulate by afﬁxing tape to the positive and
negative terminals or by other means. in the area where used batteries are separated from
other waste, dispose of them by following the local regulations
7.3 Disposal of Used Magnetron
The scanner unit in this radar use a magnetron.
0 Alter replacing it, return the used one to your local distributor or our sales ofﬁce.
For detaiL ask your local distributor or our sales ofﬁce.
99
Chapter 8 Speciﬁcations
8.1 General Speciﬁcations
1)Picture
2) Display screen
3) Range scale
4) Minimum range
5) Range discrimination
6) Bearing accuracy
7) Bearing representation
8) Environmental condition
9) Tolerance of input voltage
10) Power consumption
11) Preheat-Eng time
12) Dripproof
13) Vibrations
14) language
Color PPI by raster scan system
Resolution 1 640 x 480 pixels
10.4'inch TFT Color LCD

0.125nrn, 0.25nm, ll5nm1 0.75nm, 1l5nm, 3nm,
ﬁnm, 12nm, 24nm, 48nm
51061JMA'5110>
0.125nm, 0.25nm, Oiﬁnm, 0,75nm, 145mm1 3nm,
Snm, 12nm, 24nm, 48m, 7an
Better than 25m
Better than 25m
Better than 1'
Relative, or true with a compass

Scanner unit 1 93% maximum at +40 “C
Display unit 1 93% mam'mum at +40 "C

Dc 24V/32V (from DC 21.6 to 26.4V)
AC 100/110/115/200/220/230V i 10%
(by rectiﬁer unit)

70W

85W

130W
90 seconds
Scanner unit IPXS
Processing unit/Keyboard unit IPX2
Display unit I'PX5
ICE60945
English, French, Spanish, Norwegian, Italian,
Danish, Japanese
100
8.2 Scanner Unit Speciﬁcation
8.2.1 Scanner unit (NKE-2042 : Redome type)
1) Dimensions Height i 275mm, Diameter of radome I 620mm
2) Mass Approx. 1045kg
3) Polarization Horizontal
4) Beam width
Horizontal (ﬁll-B) 4“
Vertical (-3dB) 25‘
Side lobe level Less than ‘ZldB within 10‘ of main beam
5) Rotation speed Approx 27mm
6) Frequency 9410 1 30m
7) Peak power 4kW
8) Pulse length/repetition frequency 0.08ps/2250Hz Z 0.125nm, 0.25nm, 0.5nm, 0.75mi],
1.5nm(s)
0.25ps/1700Hz‘» 1.5nm(L), 3nm(S)
0.5ps/1200Hz: 3nm(L),6nm(S)
1.0ps/650Hz2 Gama), 12nm, 24mm, 48mm
(S: 511m, L: Long)
9) Modulator Solid'state modulator
10) Duplexer Circulator/diorle limiter
11) hont end module Built in
12) IF ampliﬁer Logarithmic ampliﬁer, Noise ﬁgure GdB maximum.
13) “using Manual/Auto
8.2.2 Scanner unit (NKE-2062 : 6kW rotatlon type)
1) Dimensions Height 2 432mm, Swing circle 1 1220mm
2) Mass Approx. Z4kg
3) Polarization Horizontal
4) Beam width
Horizontal (“36.13) 2’
Vertical (-3dB) 30"
Side lobe level Less than -23dB within 10‘ of main beam
Other than '26dB within 10' of main beam
5) Rotation speed Approx. 27mm
6) Frequency 9410 i 3OMHz
7) Peak power 6kW
8) Pulse length/repetition frequency 0.08ps/2250Hz 5 0.125nm, 0.25nm, 0.5m, 0.75nm,
145nm(S)
0.25ps/1700Hz : 1.5nm(L), 3nm(s)
05115112sz : 3nm(L), 6nm(S)
1.0ps/650Hz: 65an), 12nm, 24mm, 48nm, 72nm
(5: Short, L: Long)
9) Modulator Solid-state modulator
10) Duplexer Circulator/diode limiter
101
11) Front end module
12) IF ampliﬁer
13) ’I\ming
Built in
Logarithmic ampliﬁer, Noise ﬁgure GdB maximum.
Mammal/Auto
8.2.3 Scanner unit (NKE-2102 : 10kW rotation type)
1) Dimensions
2) Mass
3) Polarization
4) Beam width
Horizontal ('3d.B)
Vertical (-3dB>
Side lobe level
5) Rotation speed
6) Frequency
7) Peak power
8) Pulse length/repetition frequency
9) Modulator
10) Duplexer
11) Front end module
12) IF ampliﬁer
13) Tuning
Height 2 448mm, Swing circle 2 1910mm
Approx 33kg
Horizontal
1.2'
20‘
Less than '26d.B Within 10' of main beam
Other than -30dB within 10‘ of main beam
Approx 27mm
9410 i 30MHZ
lOkW
0.08115/22501'12 1 0.125nm, 0.25nm, 0.5nm, 0.75nm,
1.5nm(S)
02511511700sz Lama), 3nm(S)
0,5115/1200Hz i 3nm(L), 6nm(S)
1.0ps/650Hz: 6nm(L), 12nm, 24nm, 48nm, 72nm
(s: Short, 1; Long)
Solid-state modulator
Circulamr/diode limiter
Built in
Logarithmic ampliﬁer, Noise ﬁgure 6dB mam'mumr
Manual/Auto
102
8.3 Processing Unit Speciﬁcations
1) Dimensions
2) Mass
3) Installation
4) Range scale/rings
5) Range accuracy
6) Bearing scale
7) Ship's heading marker
8) EBL(EBL1/EBL2)
9) VRMWRMl/VRMZ)
10) Olf-centering
11) Trails
12) Indication on the screen
13) Color
Radar echo
Gradation
Color
Width 1 300mm
Height : 125mm
Depth 5 210mm
Approx. 2.4.kg
Floor setting type
0A125nm/0A065nm, 0A25nm/0.125nm, 0l5nm/O.l_nmv
0.75nm/0,26nm, 145nm/0.5nm, 3nrn/0.5nrn,
Gnm/lnm, 12nml2nm, 24nm/4nm, 48nm/8nm,
72nm/12nm(except JMA-5104)
Better than i1,5% of maximum range in use or
i70m whichever is greater
360" scale graduate at intervals of 1'
Electronic line suppressible by automatic resetting
key,
Digital read-out on the screen (3 characters)
Digital read-out on the screen (3 characters)
90% of the picture radius
OFF/30 to 595ec/1 to 59min/continuous
Mode 1 1 OFF
Mode 2 1 liming trail display
Mode 3 3 Continuous trail display
Mode 4 i Timing trail display and continuous trail
display
Selected range
Selected range ring distance
Motion mode/azimuth mode
Interference rejection indication
Echo stretch
Wakes time
Speed/Course indication
Guard zone mode
STU/ETC mode
Pulse
'l\ining indicator
Own position (lat/lonr)
EBLl/EBL2 read’out (3 characters)
V'RMl/VRMZ read-out (3 characters)
Cursor read-out (Bearing and range! or lat/lon.)
TX/ST>BY indication
16 level
4 colors (yellow, green, orange, color)
103
Radar trails
Gradation
Color
Fixed marker/ VRMl/Z / EBL1/2
Color
Character
Color
Heading line/cursor
Color
Background color inside PPI
Background oolor outside PPI
14) Heading
15) Motion
16) Guard zone alarm
17) Anti'clutter function
18) Scan correlation function
19) Floating EBL
20) Echo stretch funzrtion
21) Parallel index
22) Zoom function
23) Timed TX
24) Cable length
25) Interface
Power in
Inputs ﬁgnal
26) Output
1 level (time wakes, continuance, trails)
lime trails i 1 color (sky, white, green)
Continuance trails I 1 color (sky, white, green)
cyan
white
white
black, bule, gray
black, bule, gray
Head up/North upICourse up
Relative motion/True motion/Centerd true motion
Can be wsimhed between "OFF", "DJ" and "OUT"
Anti- Clutter sea 1 Manual/Auto
Anti‘Clutter rain 1 Manual/Auto
Built in
Built in
Built in
Built in
Built in
TX i 1 to 99 rotation
ST'BY 5 l to 99 minutes
20m (standard)
30m (option) 1 DC 24V in only
Ship's main
GPS or GPS receiver
GPS compass or electronic compass
GYRO (need NSK unit 2 option)
N'M'EA data (need GPS data)
Cursor position (RSD)
Own data (OSD)
MARPA target data (TIM) with optional MARPA pch
Ext buzz
104
8.4 Keyboard Unit Speciﬁcations
1) Dimensions
2) Mass
3) Controls and keys
4) Track ball
5) Cable length
Width 5 290mm
Height 3 45mm
Depth 3 123mm
LOkg
Gain control
'l\ming control
Anﬁ’clutter sea control
Anti-clutter rain control
Power on/STBY switch (ON/OFF)
X-MIT key
MOB key
EBL key (ON/OFF/SELECT)
VRM key (ON/OFF/SELECT)
Dimmer key
Alum ack key
Marion key
OE center key
TMIRM key
Walls key
Beaxing key
Range ring key
Cursor position key
Data key
Clear key
Range scale key (UP and DOWN)
Menu key
Acq/Enter key
Built in
5111
105
8.5 Display Unit Speciﬁcations
1) Dimensions
Landscape
Width 1 290mm
Height : 290mm
Depth 1 165mm
Portrait
Width 1 230mm
Height 2 325mm
Depth 1 166mm
2) Mass 248kg
3) Power DC 12V in
4) Resolution 640 x 480 pixels input signal
5) Signal impedance Video (R, G, B) 1 75 Q
Sync horizontal 1 1k Q
Sync vertical 3 1k Q
6) Cable length 5m
106
8.6 Option
8.6.1 Interunit cable
Intermitcalbe | 30111
8.6.2 Rectiﬁer unit
Rectiﬁer unit | N'BA'79fI
8.6.3 Flash mountlng kit
1) Flash mounting kit (For display unit) MP’I‘GSI339
2) Flash mounting kit (For keyboard unit.) MPTG31340
8.6.4 MARPA
MARPA NCA-SGS
1) Acquim'tion
Acquisition mode Manual (10 targets max)
Manual canceling ofunnecessaxy target By 1 target each or all targets
Tracking range 0.1 to ZON'M
2) Tracking
Tracking mode Automatic
3) Vectors
Mode Relative/hue
Length 1 to 99minutes
4) Dangemus target limits
CPA CPA 0,0 to 9.9N'M
TCPA TCPA 0 to 99minutes
5) Numbering target Automatic or manual applied
6) Numerical display
Target Data Simultaneous and continuous display for 1 target.
’Drue Bearing (3 digit), Range (3 digit), True course
(3 digit), True speed (3 digit), CPA, TCPA
7) Collision point Calculate predicted collision point for 1 target
collision course
Estimated time to collision
8.6.5 NSK unit
NSK UNIT NCT'4106
Gyro
SYNC/PULSE 360K, 180X, 90K and 36K
Log
SYNCHRO 360K, ISOX 90x and 36K
PULSE 800, 400, 200 and 100
107
3.6.6 Sub indicator unit signal out
Signs] | Wigger, video, bearing pulse and reference pulse
8.6.7 Sub keyboard unit
Sub keyboard unit | NOE-7640
108
8.7 Rectiﬁer
NBA-797
1) Dimentions Width 5 270mm
Height 1 430mm
Depth 3 175mm
2) Construction Waterproof construction of wall tapestry type
3) Mass Approx. 18kg
4) Tolerance of input voltage AC 100/110/115/200/220/230V i15%
50/60Hz, single phase
5) Power consumption 200VA
6) Output DC 26, 7A
8.8 Cable Length between Equipment Units
Maximum cable length Standard cable length
1) From scanner unit to indicator unit 30m 20m
* In case of JMA'5104 or JMA-5106, the input voltage
beyond 24V is rewired for 30m.
2) From indicator unit to rectiﬁer unit 2m 2m
3) From indicator unit to keyboard unit 5m 5m
4) From indicator unit to display unit 5m 5m
109
Chapter 9 Installation
This chapter has been written for the service technicians to read in case of installation.
AWARNING
® Only specialized personnel shall perform installation work
Installation work performed by personnel other than specialized personnel may
cause breakdown of the equipment, poor performance, ﬁre, severe elec—tric shock
and other property and human damages
9.1 General
Proper installation of a radar unit is essential for extracting full capability of the unit reliably and
for facilitating troubleshooting and maintenance Follow the guidelines given below when
installing the radar unit.
(3) Install the scanner unit as high as possible while taking its weight into consideration.
(b) Install the display unit in the wheel house for comfortable observation.
(c) The scanner unit and display unit are connected by 20m compound cable with an internal
shield. The maximum permissible cable length is 30 m (only when DC 24V or DC 32V is
input). Cables longer than 30m will deteriorate the radar performance of the radar unit.
110
9.2 Installing the Scanner Unit
9.2.1 Selecting the installation location
ACAUTION
©®®©
The scanner unit shall be installed where there are not large obstacles in the
direction of the ship's heading line in the same plane.
If there is a large impediment in the same plane as the scanner unit, this may
cause the generation of blse echoes. In particular, if such lolse echoes appear at
lhe ship's heading line, monitoring will be diMCull and this may cause inadequate
forecasting of dangen
Do not install the scanner unit near chimney's or the exhaust of chimneys.
Soot will cause the performance of the radar to decrease and heat may cause
breakdown.
Do not install direction antenna or VHF antenna in the vicinity of the scanner unit.
Doing so may cause noise in the antenna reception.
Consideration should be given to separating the radar cable from the cables for the
direction antenna and VHF antenna.
These cables should never be bundled into one. Doing so may cause noise in the
antenna reception
Ill
Take the following into consideration when selecting the installation location:
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
Consider the weight of the scanner unit and decide what height it can be raised for
installation in the ship.
Height at which the scanner unit is installed has to do with the maximum detectable range,
the higher its position is the better. On the other hand, however, if raised too high, at a point
beyond the beam width (-3 dB position) along the vertical direction radio wave energy will be
affected noticeably, making it difficult to spot targets lying very near
When installing the unit, consider its weight, longest permissible cable length, and the
requirements during future maintenance.
Refer to 441, "Height of and the Distance to the Target" for the relation between the height of
the scanner unit and maximum detectable range.
If the width of the radiated beam is 29 (most energy is concentrated within this width), then
the energy reduces considerably in directions outside the 29 range. Thus, if ﬁle scanner unit
is raised too high it will be diﬂicult to spot targes lying very close-by. If, on the other hand,
the scanner unit is installed low, it will be obvious to miss distance targets, and the ship's
mast derrick, funnel, etc. will intercept the radiated beams, making most of your targets
unobservable. In general, the lowest position of the scanner unit should be as shown by the
lineAB in the following ﬁgure. For example, angle 20 is 20“ for the radar ofJMA-5110.
Normally, when deciding the height of the scanner, it is necessary to make sure that the
ship's mast does not obstruct the beams.
2 8 : Vertical beam width
Lowest Position of Scanner Unit
When selecting the position of the scanner along the length of the ship, make sure that the
shading caused by the ship‘s mast on the radio waves does not coincide with the ship's center
line. If the ship has no large obstruction towards front, normally the scanner is placed on
top of the steering room along the ship's center line.
Avoid placing DF (direction ﬁnder) of VHF (communications) antenna near the scanner as
these will interfere with the radiated waves,
Sailing of the radiating surface of the scanner by the smoke from funnel affects radar
performance, clean the radiating surface form time to time. To tacilitate maintenance, place
the scanner in the right position and use mast and tower of the right structure.
Note that, if placed near ship's ﬂag or rope may cause by wind to wrap or coil around the
radiator and damage it
Do not select the derrick post as the location for scanner installation The derrick post is
subject to large vibrations.
112
(9) Note the swing circle of the scanner and allow a distance of at least (swing circle/2)+200 mm
between scanner swing center and other installations (say, mast or radio antenna).
Scanner swing circle in the radar of JMA-5106/5110 is shown in the following table.
W— wmm mmmm
810
9.2.2 Installation procedure
(a) If it is found that there is no height above the roof of the wheel house enough to directly
accommodate a scanner unit, install a pedestal or radar mast.
(b) In addition to a pedestal or radar mast, it is necessary to provide an appropriate staging for
convenience in installation, maintenance, adjustment, and repair of the scanner unit
1. Stand
Install the stand as instructed in drawing Fig.1.1, 1.2 and 1.3 in Chapter 1. Direct the cable
gland towards ship‘s stern, making sure that scanner installation base is parallel to surface of
the sea. If the stand is installed directly on the top of steering room and ﬁnd that the scanner
is not sufﬁciently high, use a pedestal or radar mast. Normally, if height of the scanner is not
more than 2 m above the roof of the steering room, place the scanner on a pedestal ﬁxed with
angle joints. If, on the other hand, the scanner is positioned below a height of 2 m, use a
cylindrical radar mast, and place the scanner on top of it. Whether a pedestal of radar mast is
used it is necessary to provide proper foothold to facilitate the installation, maintenance,
adjustment, and repairs. (Refer to the following ﬁgure)
—.- E
Helghl Height
Scanner Stand
113

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Japan Radio NKE2102 Marine Radar User Manual Manual 2 of 4

Japan Radio Co Ltd. Marine Radar Manual 2 of 4

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