JMA-9900 ARPA Series Radar System Composition ...................... A-1
JMA-9900 ARPA Series Radar System Circuit Block ....................... A-2
Fig.101 Block Diagram of Radar, Type JMA-9933-SA and JMA-9923-7XA/9XA
Fig.102 Block Diagram of Radar, Type JMA-9932-SA and JMA-9922-6XA/9XA
Fig.103 Terminal Board Connection Diagram of Radar, Type JMA-9933-SA
(SELF STANDING TYPE)
Fig.104 Terminal Board Connection Diagram of Radar, Type JMA-9933-SA
(DESK TOP TYPE)
Fig.105 Terminal Board Connection Diagram of Radar, Type JMA-9932-SA
(SELF STANDING TYPE )
Fig.106 Terminal Board Connection Diagram of Radar, Type JMA-9932-SA
(DESK TOP TYPE )
Fig.107 Terminal Board Connection Diagram of Radar, Type JMA-9923-7XA/9XA
(SELF STANDING TYPE AC220V 3φ) Fig.108 Terminal Board Connection Diagram of Radar, Type JMA-9923-7XA/9XA
(SELF STANDING TYPE AC220V 1φ AC100V 1φ) Fig.109 Terminal Board Connection Diagram of Radar, Type JMA-9923-7XA/9XA
(DESK TOP TYPE AC220V 3φ) Fig.110 Terminal Board Connection Diagram of Radar, Type JMA-9923-7XA/9XA
(DESK TOP TYPE AC220V 1φ AC100V 1φ)
- xx -
Fig.111 Terminal Board Connection Diagram of Radar, Type JMA-9922-6XA/9XA
(SELF STANDING TYPE AC220V 3φ) Fig.112 Terminal Board Connection Diagram of Radar, Type JMA-9922-6XA/9XA
(SELF STANDING TYPE AC220V 1φ AC100V 1φ) Fig.113 Terminal Board Connection Diagram of Radar, Type JMA-9922-6XA/9XA
(DESK TOP TYPE AC220V 3φ) Fig.114 Terminal Board Connection Diagram of Radar, Type JMA-9922-6XA/9XA
(DESK TOP TYPE AC220V 1φ AC100V 1φ) Fig.115 Primary Power Supply lock Diagram of Radar, Type JMA-9933-SA
Fig.116 Primary Power Supply lock Diagram of Radar, Type JMA-9932-SA
Fig.117 Primary Power Supply lock Diagram of Radar, Type JMA-9923-7XA/9XA
Fig.118 Primary Power Supply lock Diagram of Radar, Type JMA-9922-6XA/9XA
Fig.119 Internal Connection Diagram of Scanner Unit, Type NKE-1079
Fig.120 Internal Connection Diagram of Scanner Unit, Type NKE-1079-D
Fig.121 Internal Connection Diagram of Scanner Unit,
Type NKE-1075/1075A (100V AC,1-phase)
Fig.122 Internal Connection Diagram of Scanner Unit,
Type NKE-1075/1075A (230V AC,3-phase)
Fig.123 Internal Connection Diagram of Scanner Unit,
Type NKE-1075/1075A (230V AC,1-phase)
Fig.124 Internal Connection Diagram of Scanner Unit, Type NKE-1089-7/9 (1-phase)
Fig.125 Internal Connection Diagram of Scanner Unit, Type NKE-1089-7/9 (3-phase)
Fig.126 Internal Connection Diagram of Scanner Unit, Type NKE-1087-6/9 (1-phase)
Fig.127 Internal Connection Diagram of Scanner Unit, Type NKE-1087-6/9 (3-phase)
Fig.128 Internal Connection Diagram of Transmitter-receiver Unit, Type NTG-3037/3037A
Fig.129 Internal Connection Diagram of Transmitter-receiver Unit, Type NTG-3028
Fig.130 Internal Connection Diagram of Display Unit, Type NCD-4263
Fig.131 Internal Connection Diagram of CRT Monitor of Display Unit, Type NCD-4263
Fig.132 Internal Connection Diagram of Power Supply of Display Unit, Type NCD-4263
Fig.133 List of NSK and LOG Select Switches of Display Unit, Type NCD-4263
Fig.134 Setting Table of Speed LOG Select Switches of Display Unit, Type NCD-4263
Fig.135 Setting Table of Gyro Compass and Gyro Select Switches of
Display Unit, Type NCD-4263
Fig.136 Terminal Board Connection Diagram of 2-unit Interswitchesystem, Type NQE-3141N
Fig.137 Terminal Board Connection Diagram of 3-unit Interswitches
System, Type NQE-3141N
Fig.138 Internal Connection Diagram of Interswitch, Type NQE-3141N
- xxi -
Rejection
Use as a temporary marker
9900
9900
In addition, a radar switching function ( interswitch ) can be added to switch between two, four or eight
eight radar units. However, in order to this function for four or eight units, an external switching box is
necessary.
23.1 inch color raster-scan LCD display unit
LCD
the soft button on a screen and screen menu.
9900
9933
9923
9932
9923
9923
9922
9933
9922
9922
9922
9923
9932
9933
1087-9
1087-6
1089-9
1089-7
1079
NTG-3037A
3028
4263
230
100/230V
230
NTG-3037
-1075 (*)
-1075A (*)
NKE
NKE
230
230
1075/1075A
1079
1089-7
1089-9
1087-6
1087-9
3037/3037A
3028
4263
158T
1279T
7721T
Fig.1.1 EXTERIOR DRAWING OF
SCANNER UNIT,TYPE NKE-1079
1―8
Fig.1.2 EXTERIOR DRAWING OF
SCANNER UNIT,TYPE NKE-1075
1―9
Fig.1.3 EXTERIOR DRAWING OF
SCANNER UNIT,TYPE NKE-1089-7
1―10
Fig.1.4 EXTERIOR DRAWING OF
SCANNER UNIT,TYPE NKE-1089-9
1―11
Fig.1.5 EXTERIOR DRAWING OF
SCANNER UNIT,TYPE NKE-1087-6
1―12
1―13
Fig.1.6 EXTERIOR DRAWING OF
SCANNER UNIT,TYPE NKE-1087-9
This switch is used to turn the power on and off. The lamp lights when this switch is on.
When the power is on and it cannot be turned off for some reason, depressing this switch for five
seconds will force the power off.
② [PWR ACK] (Power Alarm Acknowledgment) Switch
When this switch is set to ON, the lamp lights to start the system.
In order for this key to work, an external battery is required (normally a power supply separate
from the AC unit).
③ [TX/STBY] (Operation) Switch
The「STANDBY」 will appear at the upper left of the radar display about 3 minutes after
the [PWR] switch is set to ON. Then, press this switch, and transmission will be started.
Pressing the switch during transmission sets the equipment to the standby state.
④ [ALARM ACK] (Alarm Acknowledgment) Switch
Press this switch to acknowledge a failure, approach of a target, or collision alarm.
⑤ [TUNE] (Turning) Control
Tunes the target signals to display the targets most clearly on the radar display.
Switching between AUTO and MANUAL can be done by pressing the knob.
⑥ [RAIN] (Rain/Snow Clutter Suppression) Control
Reduces the clutter echo caused by rain and snow.
Be careful not to set this adjustment too high. Setting this adjustment too high may cause the
target to be erased. Switching between AUTO and MANUAL can be done by pressing the knob.
⑦ [SEA] (Sea Clutter Suppression) Control
Reduces the clutter echo caused by the surface of the sea.
Be careful not to set this adjustment too high. Setting this adjustment too high may cause the
target to be erased. Switching between AUTO and MANUAL can be done by pressing the knob.
⑧ [GAIN] (Receiving Sensitivity) Control
Controls the radar receiving sensitivity.
Adjust the GAIN to a point where the background static does not interfere with operation.
⑨ [RANGE +/-] (Range Scale Select) Switch
Selects a range scale from 0.125 to 96 (or 120) nautical miles.
⑩ [EBL1] (Electric Bearing Line 1) Switch
Selects and displays EBL1. Switches between ON and OFF, and the function for which this
switch if valid. When depressed for two seconds or longer, this switch selects ON/OFF for the
floating setting.
⑪ [EBL2] (Electric Bearing Line 2) Switch
Selects and displays EBL2. Switches between ON and OFF, and the function for which this
switch if valid. When depressed for two seconds or longer, this switch selects ON/OFF for the
floating setting.
⑫ [EBL] (Electric Bearing Line) Control
Rotates the bearing of the EBL that is selected by EBL1 and 2.
Switches between ON and OFF, and the function for which this switch if valid.
⑭ [VRM2] (Variable Range Marker 2) Switch
Selects and displays VRM2.
Switches between ON and OFF, and the function for which this switch if valid.
⑮[VRM] (Variable Range Marker) Control
Changes the range of the VRM that is selected by VRM1 and 2.
⑯ [T/R VECT] (TM/RM Mode Select) Switch
Selects the ARPA vector display in the TM or RM mode.
⑰ [TGT DATA] (Target Data Setup) Switch
This switch is used to display numeric data of ARPA being tracked and AIS being displayed.
When this switch is depressed for two seconds, the numeric display next to symbols will be
turned on and off.
⑱ [ACQ MANUAL] (Manual Acquisition) Switch
This switch turns on and off manual acquisition of ARPA targets.
When this key is pressed, the cursor mode is changed to the manual acquisition setting mode.
⑲ [ACQ CANCEL] (Acquisition Cancel) Switch
This switch cancels the symbol and vector of an ARPA target being tracked, and stops tracking
the target.
If depressed for two seconds or longer, that tracking of all targets will be cancelled. (ARPA
display)
When using with AIS, pressing this for two seconds, all targets will be paused and displayed.
2
⑳ [DAY/NIGHT] (Day/Night Mode Select) Switch
Switches the screen color and brilliance according to the DAY, DAY2, NIGHT1 and NIGHT2
setting.
[AIS/ARPA]
21
Selects whether to use the ACQ MANUAL and ACQ CANCEL keys with ARPA or AIS.
[HL OFF] (Heading Line Off) Switch
22
The ship’s heading line (HL) can be cancelled as long as this switch is depressed.
[DATA OFF]
23
While this switch is depressed, graphics other HL, the range ring, EBL and VRM will be deleted
temporarily.
[PANEL] (Operation Panel Brightness) Switch
24
Controls the brightness of the controls and switches on the operation panel.
[USER]
25
The registered function is called. Also, if an option is connected, then this is used to operate that
option.
At the time of factory shipments, it is set as ON of the function which switches the vector length
of "ARPA" in 60 minutes, and OFF.
The registered function is called. Also, if an option is connected, then this is used to operate that
option.
The call of a MENU is assigned at the time of factory shipments.
[OPTION2]
27
The registered function is called. Also, if an option is connected, then this is used to operate that
option.
The call of a TEST is assigned at the time of factory shipments.
[Trackball]
28
The trackball is used to move the cursor to arbitrary locations on the screen. It is used to make
settings in the various modes.
It is used to specify the center position of floating EBLs and specify the off center position.
[Left Trackball Button]
29
This button Is used to select various modes and confirm numeric input.
In the MARK mode, it is used to confirm the screen mark. During manual acquisition of ARPA,
it is used to confirm acquisition.
[Right Trackball Button]
30
In the MARK mode, this button is used to delete screen marks.
During manual acquisition of ARPA, it is used to release acquisition.
[BRILL] Control
31
Controls the brilliance of the entire display panel.
Brilliance knob is located right-hard if a screen.
Changes the radar range.
“+”: Increases the range by one step. (The maximum range is 96 or 120 nautical miles.)
“-”: Decreases the range by one step. (The minimum range is 0.125 nautical mile.)
② RINGS indicator selection
Turns on and off the fixed distance scale display. When this is turned on, the intervals of the
range rings will be displayed. When this is turned off, then “OFF” will be displayed.
③ Pulse width selection
Select the pulse width. There are three pulse widths: Short pulse (SP), middle pulse (MP)
and long pulse (LP). The pulse widths that can be used depend on the range being used. If a
change cannot be made, then nothing will be displayed. This setting is stored for each range.
This has the same function as the [AZI MODE] switch. It switches between North-up (true
bearing), Head-up (relative bearing) and Course-up. Each time this button is clicked it will step
through the settings in the following order: “N UP” ⇒ “C UP” ⇒ “H UP”
⑥ Motion mode selection
The screen display is changed between the True Motion (TM) and Relative Motion (RM)
displays. Clicking this button will switch between “TM” and “RM.” (R) indicates a relative trail.
(T) indicates a true trail.
⑦ Transmission/Standby selection
About three minutes after the [PWR] switch is turned on, the “PREHEAT” indication on the upper
left of the screen will change to “STANDBY.”
STANDBY: Indicates that the unit is in the standby state. Clicking the switch at this time will
change the unit to the transmission state.
TRANSMIT: Indicates that the unit is in the transmission state. Clicking the switch at this time
will change the unit to the standby state.
⑧ Change Interswitch connection
This is displayed if Interswitch is connected. The indicator shows the connected scanner and
the connection status of the indicator. When this switch is pressed, a menu to change the
connection states of the scanner and indicator will be displayed. The scanner and indicator
connection states cannot be changed, unless the master indicator is in the standby state.
⑨ AIS target refreshed (ACT)
When this switch is pressed, the AIS target will be activated.
⑩ AIS target deactivated (DACT)
When this switch is pressed, the activated AIS target is paused.
⑪ ARPA symbol indicator selection
Turns the ARPA symbol indicator on or off. The setting is changed each time this button is
clicked.
⑫ AIS symbol indicator selection
Turns the AIS symbol indicator on or off. The setting is changed each time this button is
clicked.
Turns on and off the radar interference reflector (IR). The IR is turned on or off each time this
switch is clicked.
⑭ Radar reception scale (GAIN)
This indicates the degree the knob has been turned.
⑮ Sea clutter suppression function (SEA) selection
Selects either manual or automatic sea clutter suppression. The bar on the right indicates the
position in the manual mode.
⑯ Sea scale
This indicates the amount the knob has been turned in manual mode. When in auto
mode,“AUTO”will be displayed.
⑰ Rain/snow clutter suppression function (RAIN) selection
Selects either manual or automatic rain/snow clutter suppression. The bar on the right
indicates the position in the manual mode.
⑱ Rain scale
This indicates the amount the knob has been turned in manual mode. When in auto mode,
“AUTO”will be displayed.
⑲ Own ship’s trail indication interval function (TRACK) selection
Turns on and off the own ship’s trail indication interval.
⑳ Radar trail indicator function (TRAILS) selection
Sets the time intervals for radar trails. OFF, 0.5MIN, 1MIN, 3MIN, or 6MIN can be selected.
Image processing function (PROC) selection
21
Sets the image processing mode. OFF, PROC1, PROC2 or PROC3 can be selected.
Radar trail mode selection
22
Sets true trail or relative trail when operating the radar trail function.
“T” is displayed when true trails are used and “R” is displayed for relative trails.
This setting is also limited by the radar bearing mode.
When the North-up (N UP) mode is used, switching between “T” and “R” is possible.
When the Course-up (C UP) mode is used, only “T” is set.
When the Head-up (H UP) mode is used, only “R” is set.
Radar image enhance (ENH) function selection
23
Turns on and off the radar image enhance function. It is turned on or off each time this switch is
clicked.
Cursor mode selection
24
Sets the cursor mode. Clicking this button will display a pull-down menu. After setting the
mode, the cursor can be moved and the left trackball button used to make various settings.
Because all the modes are to be used during radar transmission, a mode may not operate
properly if it is selected in the standby state.
Off center mode selection
25
This has the same function as the [OFF CENT] switch. Shifts the own ship position within the
screen (within 60% of the scope’s radius) to display a wider range in an arbitrary direction.
When this button is pressed when the system is already in the off center mode, then the off
center function will be turned off.
Has the same function as the [HL OFF] key. While this switch is clicked, the heading lines (HL)
display will be turned off.
CPA RING indicator selection
27
Turn on and off the CPA RING display.
When the vector mode is TRUE, the CPA RING cannot be turned on.
MAP SHIFT
28
This is used to mode maps made by users.
DEPTH
29
This displays the depth received from external devices.
The □ button can be used to turn on and off the depth graph display.
DAY/NIGHTsetting
30
This button selects the day or night mode. The mode changes each time this button is clicked.
There are four settings: DAY1→ DAY2 → NIGHT1 → NIGHT2.
PANEL/BRILL VIDEO/BRILL ARPA setting
31
The modes PANEL, VIDEO, and ARPA which adjust luminosity are switched.
The mode changes each time this button is clicked.
There are three settings: PANEL→VIDEO→ARPA.
32
Brilliance adjustment Each time this switch is clicked, it will go to the next of four (BRILL VIDEO) or five (PANEL,
BRILL ARPA) brilliance settings.
33
Process setting function (FUNC) selection
Sets the process setting mode. OFF, FUNC1, FUNC2, FUNC3, FUNC4, or FUNC5 can be
selected.
35343637
, , , : EBL and VRM settings
The EBL1, EBL2, VRM1, and VRM2 switches are used to acquire operation rights.
They function in the same way as the EBL1 and 2 and VRM1 and 2 switches on the control
panel.
The numeric indicator switches are used to turn on and off the various EBLs and VRMs.
When a numeric indicator displays “OFF,” that means the corresponding indicator in the PPI is
off.
The switches on the control panel are used to move the EBLs and VRMs.
EBL1 T051.0 °
EBL2 T135.0 °
● VRM1 0.30 nm
○ VRM2 0.60 nm
EBL and VRM intersection identification marks
38
EBL1 starting point mode
Sets whether the EBL1 starting point is placed at the center of the own ship or at an arbitrary
position on the radar screen. This has the same function as depressing the EBL1 switch on the
control panel for a long period.
This is used to turn ON and OFF either EBL or VRM operation, and turn ON and OFF the display.
The function that is valid is indicated by the inverted display.
When ON: The numeric display is off.
When OFF: The numeric display is on.
C: CENTER Indicates that the EBL1 starting point is at the own ship position.
O: OFFSET Indicates that the EBL1 starting point is not at the own ship position.
In this state, the starting point may be at the cursor position or it may be fixed at an arbitrary
position on the screen. When the button is clicked, the starting point will move with the
cursor position, then when the left button is clicked the starting point will be fixed at the
cursor location.
L: After moving the L/L FIX EBL1 starting point, the starting point is fixed by the latitude and
longitude values.
If the starting point moves out of the screen, then it will be reset automatically so that the
starting point is at the own ship position.
Note: When the EBL1 starting point moves, the mode O or L is indicated by the position
selected among the EBL OFFSET ORIGIN menu.
39
EBL2 starting point mode
Sets whether the EBL2 starting point is placed at the center of the own ship or at an arbitrary
position on the radar screen.
Everything else is the same as that for the EBL2 starting point mode.
Speed unit setting
40
Sets the speed unit.
Clicking this button will open a pull-down menu. A unit can be selected from one of the
following. An alarm is activated if the selected speed unit is not connected to the radar.
Options: MANUAL, LOG (1-axis log), 2AXW (2-axis over water), 2AXG (2-axis over ground),
GPS
If the speed unit setting is “MANUAL,” then placing the cursor over the numeric section and left
clicking will allow numeric input.
SET/DRIFT
41
Turns on and off SET/DRIFT correction.
If CORRECTION is on for this setting, then “CORR” will be displayed next to the button. The
number displayed next to “CORR” at this time will be valid. Also, correction can only be set
when the speed unit is in the MANUAL or LOG (1-axis log) modes.
SET setting
Placing the cursor over the numeric section and left clicking will allow numeric input. This
setting is only valid if CORRECTION is ON.
DRIFT setting
Placing the cursor over the numeric section and left clicking will allow numeric input. This
setting is only valid if CORRECTION is ON.
42
Date display mode
Sets the date mode to be displayed on the screen.
: Turns off the time display.
: Global time display (UCT).
U
: Local time display (LOCAL).
ARPA, PAST POSN vector mode setting
43
L
These set the vector display mode.
T: True vector
R: Relative vector
These settings work concurrently.
Power ON and Start the System・・・・・・・・・・・・・・・・・・・・・・・・・・・
Wait approximately 10 seconds before turning on the power again.
A malfunction may occur if the power in the ship is suddenly interrupted during
Immediately after the radar is installed, if the system is not used for a long time,
If the warm-up time is short, the magnetron may cause sparks, resulting in an
Attention
operation of the radar. In this case, the power should be turned on again.
or after the magnetron is replaced, warm-up the equipment in the standby mode
for 20 to 30 minutes before setting it to the transmit mode.
unstable oscillation.
Start transmission on a short-pulse range and then send long pulses
sequentially. If the transmission is unstable in the meantime, reset the system
to the standby mode immediately and maintain it in the standby mode for 5 to 10
minutes before restarting the operation. Repeat these steps until the operation
is stabilized.
When the warm-up time expires, the warm-up time screen disappears and
the PREHEAT display on the upper-left corner of the radar display is
changed to STANDBY .
4 Press .
The radar transmission and the scanner start rotating.
The STANDBY on the upper-left corner on the radar display is changed
to TRANSMIT .
Attention: Even if is pressed before STANDBY is displayed, radar
STBY
TX
STBY
TX
transmission is not performed.
The method of transmission in case of emergency.
Procedures
1 Check that the ship’s mains are turned on.
POWER
2 Press .
Orange lamp on →
The warm-up time will appear.
3
warm-up time.
The radar transmission and the scanner start rotating.
The STANDBY on the upper-left corner on the radar display is changed
Note:
In the moment sag of a power supply, and the case of an unusual
operation outbreak, it can transmit, immediately after rebooting the power
supply.
Please do not use emergent transmitting operation except the above.
The life of a magnetron will be shortened if the warm-up is not completed.
When the receiver is detuned, the best video may not be obtained even if the
maximum bar graph is displayed on the AUTO TUNE tuning indicator. In this
case, adjust the [TUNE] control manually so that the best video is presented.
1 Press and select any range scale from 0.125 to 96
RANGE
(or 120) NM. (The current range scale is
displayed at the upper left of the radar
display.)
The range scale becomes shorter by pressing and longer by
pressing
.
2 ROTATE .
Procedures
Cancellation
Adjust the video to present the clearest targets.
If there is no adequate target, adjust [TUNE] control to indicate the maximum
bar graph on the turning indicator at the upper left of the radar display.
TUNE
In case of Using AUTO TUNE:
1 Press . Or, press MANUAL
button.
TUNE
“AUTO” in “2.TUNE” will be set and “AUTO” will
appear at the upper left of the radar display.
1 Repeat the procedures up to step 2
in case of using AUTO TUNE.
“MANUAL”in“2.TUNE”will be set and“AUTO”at
the upper left of the radar display will change
to“MANUAL”and AUTO TUNE mode will be
cancelled.
Acquire and Measurement Data・・・・・・・・・・・・・・・・・・・・・・・・・・・
For detailed operations for data acquisition and measurement, refer to Section 3.4 “BASIC
OPERATIONS” and Section 4 “MEASUREMENT OF RANGE AND BEARING”.
End the Operation and Stop the System・・・・・・・・・・・・・・・・・・・・
Exit
1 Press .
The radar transmission will end and the scanner will stop rotating.
The indication TRANSMIT will be changed to STANDBY .
Maintain the “STANDBY” mode if radar observation is restarted in a
relatively short time. Observation can be restarted simply by pressing
the [TX/STBY] switch..
2 Press .
The power will be turned off. Orange lamp Off →
Note: When "PWR" is lit, data is being written to internal memory, so do not
open the shipboard breaker.
Also, when turning on the power supply again, be sure that the green
The Menu system of this radar equipment consists of the Main menu, Sub1 menu, Sub2 menu and
Test menu.
MAIN MENU
1.IR
OFF
2.TGT ENH
2.TUNE
OFF
3.PROCESS
2.PROC1
4.FUNCTION
1.FUNC OFF
5.EBL1
CENTER
6.EBL2
CENTER
7.
8.
9.
DATA OFF
SUB1 MENU
CODE INPUT
ON
ON
OFFSET
OFFSET
1.
2.
3.
SUB1 MENU
NAV/MAP INFO
4.
5.
6.
7.
EBL MANEUVER
8.
9.
SUB2 MENU
SETTING1
LEVEL
TRACK
ARPA
PIN
ISW
0.
EXIT
0.
EXIT
TEST MENU
1.
2.
3.
4.MAG CURRENT
5.PM
6.
7.
SELF CHECK
PANEL TEST
ARPATEST
OFFON
OFFON
ERROR LOGGING
SYSTEM INFO
1.
SUB2 MENU
COLOR
0.
EXIT
0.
EXIT
The Main menu consists of the items of signal processing functions and EBL control, and
other functions are included in the Sub1 menu. The video color setting is included in the Sub2
menu.The Test menu consists of the items of input monitoring and Self-diagnostic functions.
Note: When the unit is shipped from the factory, this is set in "OPTION2" or the "MENU" key.
This control is used to tune the receiver.
If the receiver is detuned from the best level, the receiving sensitivity falls, and the targets on a long
range or the small targets on a short range may be overlooked.
In manual tuning, rotate the [TUNE] control clockwise or anticlockwise and adjust so that the target
echoes are the clearest. If no suitable target is present, adjust the control so that the tuning
indicator bar graph at the upper left of the radar display is maximized.
After setting the radar to the TRANSMIT mode, it take about 10 minutes until the oscillation
frequency of the magnetron is stabilized. Therefore, tune the receiver once again after about 10
minutes.
For automatic tuning, set “TUNE” to “ON” in the AUTO Menu. (Refer to page 3-8).
TUNE
3
Sensitivity Control [GAIN]・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
This control is used to control the radar receiving sensitivity.
Clockwise rotation of the [GAIN] control increases receiving sensitivity and extends the radar
observation range. If the sensitivity is too high, the receiver noise will increase to reduce the
contrast of the targets with the background video and make the targets obscure on the display. To
observe densely crowded targets or the targets on a short range, rotate the [GAIN] control
anticlockwise to reduce the sensitivity so that the targets are easy to observe. Be careful not to
overlook small and important targets.
GAIN
Display Brilliance Control ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
This control is used to adjust the brilliance of the entire display.
Clockwise rotation of the [BRILL] control increases the brilliance of the entire display. Adjust the
[BRILL] control to obtain the best-to-see display with optimum brilliance.
Contrast Control [BRILL VIDEO]・・・・・・・・・・・・・・・・・・・・・・・・・・・
The contrast of the radar video display can be adjusted in four levels. Press the PANEL button on
the screen, then select [BRILL VIDEO]. Each time the brilliance button is clicked, the screen
will switch to VIDEO . The current mode is displayed on the lower right of
the radar screen. (The VIDEO indication will change to the PANEL indicated in several second.)
Adjust the [BRILL VIDEO] switch to obtain the best-to-see video with optimum contrast.
Attention
In the AUTO SEA mode, there are cases in which the targets are not displayed
because the sea clutter returns are suppressed in a simple way.
Use the manual [SEA] control during sailing under normal conditions.
In the AUTO RAIN mode, there are cases in which the targets are not displayed
because the rain/snow clutter returns are suppressed in a simple way.
Use the manual [SEA] control during sailing under normal conditions.
This control is used to reduce the receiving sensitivity on a short range to suppress the sea clutter
returns.
Clockwise rotation of the [SEA] control can suppress sea clutter returns more effectively. Be
careful not to suppress sea clutter excessively. Otherwise, small buoys and boats may disappear
from the radar display.
When setting “SEA” to “SEA AUTO” , sea clutter returns can be suppressed depending on their
intensity levels. This setting is used for the case in which the sea clutter returns are different in
their directions.
Switching between manual and auto is done by clicking the“SEA AUTO” / “SEMI AUTO”button on
the lower left of the screen, or pressing the“SEA”knob.
Note: It is not allowed to use both the AUTO / SEMI AUTO SEA mode and the AUTO
This control is used to suppress rain or snow clutter returns. Clockwise rotation of the [RAIN]
control makes clearer those targets that may be hidden among rain/snow clutter returns. Be
careful not to overlook small targets in the clutter. This control also has the effect of reducing sea
clutter, so that it is more effective to use this control together with the [SEA] control.
Rotate the control anticlockwise to the maximum in the normal condition.
When setting SEA/RAIN to AUTO RAIN in the AUTO Menu, rain/snow clutter can be suppressed
depending upon the intensity level. When setting SEA/RAIN to MANUAL in the AUTO Menu, the
mode is changed into the MANUAL mode.
Switching between manual and auto is done by clicking the "RAIN AUTO" button on the lower left of
the screen, or pressing the "RAIN" knob.
Note: It is not allowed to use both the AUTO RAIN mode and AUTO SEA mode at the
Press . Or press the right side of "PANEL" on the screen.
The BRILLIANCE switches [PANEL], [BRILL VIDEO], and [BRILL ARPA] are used to adjust the
brilliance of the panel, video and ARPA markers. Each time a switch is pressed, the brilliance is
increased by one level up to 4 or 5 levels. When the maximum level is reached, the brilliance is
reset to the original panel.
[PANEL] Adjusts the lighting for the characters on the controls and switches on the
When PANEL on the screen is pressed, the adjustment status of "BRILL
Then, each of the levels can be set if the brilliance level button on the right is
[BRILL VIDEO] Adjusts the brilliance of radar display.
[BRILL ARPA] Adjusts the brilliance of ARPA information
Brilliance Control by Menu Operation
[RANGE RINGA] Adjusts the brilliance of the fixed range scale.
[VRM] Adjusts the brilliance of the variable range scale (VRM1 and VRM2).
[EBL] Adjusts the brilliance of electronic bearing cursor (EBL1 and EBL2).
[CHARACTER] Adjusts the brilliance of characters.
Whenever the [DAY/NIGHT] switch is pressed, the mode is changed over from DAY1 → DAY2
→ NIGHT1 → NIGHT2 and the current mode is indicated at the lower right of the radar
display. The brilliance levels selected for each mode are saved. For brilliance adjustment, refer to
page 3 -12. For selection of DAY/NIGHT mode by menu operation, refer to “Color Setting” on the
next page.
Color Setting [COLOR]・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
he colors of the Day/Night mode [Day1, 2/NIGHT1, 2], system, background color outside the
T
bearing scale, background color inside the bearing scale, echoes, characters, dials, own ship’s track,
and radar trails are set up.
Color Adjustment by Menu Operation
[DAY/NIGHT] Register of DAY/NIGHT mode
[SYSTEM] System color adjustment
[OUTER PPI] Adjustment of the background color outside the bearing scale
[INNER PPI] Adjustment of the background color inside the bearing scale
[CHARACTER] Adjustment of character colors
[DIAL] Adjustment of dial color
[ECHO] Adjustment of echo colors
[TRAILS] Adjustment of the color of radar trails
[OWN TRACK] Adjustment of the color of own ship’s track