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Radar furuno
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MARINE RADAR
FR-2115/2125
F I R S T E D I T I O N : D E C 1 9 9 8
Yo u r L o c a l A g e n t / D e a l e rFURUNO E L E C T R I C C O., LT D.c
9 - 5 2 , A s h i h a r a - c h o ,N i s h i n o m i y a , J a p a n 6 6 2
Te l e p h o n e : 0 7 9 8 - 6 5 - 2 1 1 1Te l e f a x : 0 7 9 8 - 6 5 - 4 2 0 0
A l l r i g h t s r e s e r v e d . Printed in Japan
P U B . N o . S M E - 3 4 6 4 0 - AF R - 2 1 1 5 / 2 1 2 5( K A O K )
CONTENTS
Chapter1. GENERAL1.1Outline...........................................................................1-1
1.2 Boards & Major Components.....................................1-2
1.3 Specifications................................................................1-3
Chapter 2. BLOCK DESCRIPTION2.1 Overview.......................................................................2-1
2.2 Block Diagram of Display Unit....................................2-2
Function of Each Board (Display Unit) ..........................2-3
Start-up Sequence ..........................................................2-5
ARPA start-up sequence.................................................2-6
Block Diagram of Display SPU Board ...........................2-7
Video Signal Flow .........................................................2-8
Block Diagram of SPU Board (Video Amplifier) ...........2-9
Auto Tuning Function ....................................................2-10
Tuning Indication...........................................................2-11
Manual Tuning...............................................................2-11
Tuning Circuit................................................................2-11
Echo averaging (EAV 1/2/3)...........................................2-12
Memories & Memory Frame Priority .............................2-13
Antenna on/off Control ..................................................2-14
Check of ARP and RP board Connection .......................2-15
ARP-23 vs. ARP-26.......................................................2-15
Simple ARPA block diagram .........................................2-16
ARPA block diagram .....................................................2-17
ARPA target acquisition and Tracking............................2-18
ARPA INITIAL SETTING MENU................................2-19
Block Diagram of RP Board...........................................2-22
INPUT/OUTPUT Data on INT Board (03P9252)...........2-23
Sentences Receivable at J450 on INT-9170....................2-24
Radar and ARPA output signal from INT-9170 ..............2-25
Monitor signal from J449...............................................2-26
Power Supply Circuit (DC) ............................................2-27
Power Supply Circuit (AC) ............................................2-29
CONTENTS
2.3 Scanner Unit................................................................ 2-31
General.......................................................................... 2-31
Block Diagram of Scanner Unit ..................................... 2-32
Chapter 3. ADJUSTMENT3.1 Adjustment (Display Unit).......................................... 3-2
Location of Major parts ................................................. 3-2
Adjustment of CRT........................................................ 3-5
3.2 Adjustment (Scanner Unit)......................................... 3-15
FR-2125 (RTR-063) ...................................................... 3-17
FR-2115 (RTR-062) ...................................................... 3-21
Chapter 4. MAINTENANCE4.1 Dip Switches................................................................. 4-2
4.2 Jumper Settings........................................................... 4-3
4.3 LED Status .................................................................. 4-4
4.5 Notice on Replacing Major Parts................................ 4-8
4.6 Program Numbers....................................................... 4-9
4.7 How to update system program.................................. 4-9
4.8 Alternation of Power Supply....................................... 4-11
Chapter 5. TROUBLESHOOTING5.1 Outline ......................................................................... 5-1
5.2 Error Message.............................................................. 5-1
5.3 Troubleshooting Flow Charts....................................... 5-1
Exploded View ................................................................ D-1
Mechanical Parts List ................................................... M-1
Schematic Diagrams ..................................................... S-1
Electrical Parts List ....................................................... E-1
1-1
1.1 Outline
This manual provides the information necessary for the servicing and adjustment of the radarsFR-2115 and FR-2125.
The antenna unit uses a Log IF amplifier.
The features are;
� 6 pulselengths enabling echo size on the screen to be similar in all ranges
�Flash ROM enabling program update to use a PC
�Non-interlace, high-resolution display (1024x1280 dots)
�New microprocessing technology with high-speed high-density gate array
�Radar mapping capability
(Lines and Marks can be entered without the RP board, Gyro and L/L data required)
�New cast aluminum scanner gearbox
�New series of streamlined radiators, fixing feeder waveguide not required at installation
�Display unit separable into Monitor, Control Unit, and Processor Units
�Stabilized antenna rotation
� Improved short-range performance using shorter pulselength and higher repetition rate thanbefore.
The table below shows the major specifications of each model.
Functions FR-2115 FR-2125
Maximum Range 72 NM(R-type) 96 NM(IMO type)
120 NM(R-type) 96 NM(IMO type)
Program Number 0359149-1XX�English� Japanese�
Tuning Voltage(displayed at manual tuning) 2.0 V to 32 V
RF Module RTR-062 RTR-063
Antenna Rotation 24 rpm or 42 rpm
Output Power 12 kW 25 kW
TX-HV Board HV-9017 A HV-9017 B
Input Voltage (Ship’s Mains)24/32 VDC : 21.6 to 41.6 V110 VAC : 90 to 126 V220 VAC : 198 to 253 V
The major parts and P.C. Boards used in the display and scanner units are tabulated on the nextpage.
Chapter 1. GENERAL
1-2
1.2 Boards & Major ComponentsDISPLAY UNIT
Board Name FR-2115 FR-2125
SPU Board 03P9253
PTU (PWR) Board DC : 03P9246, AC : 03P9245
FILTER Board DC : 03P9226, AC : LF-210
TX-HV Board HV-9017A HV-9017B
PANEL Board (in control head) 03P9255
PAL Board (in control head) 03P9254
PAR Board (in control head) 03P9256
INT Board 03P9252
Mother Board 03P9251
ARP Board (Optional ARP-26) 18P9002 B
RP Board (Optional RP-26) 14P0298
Card I/F Board (Optional RP-26) 14P0299
PDM Board PDM-9025
Gyro Board (Optional GC-8) 64P1106 A
PM Board (Optional PM-30/50) 03P9225
CRT Unit CDT2136B
SCANNER UNIT
Board Name FR-2115 FR-2125
MODULATOR Board 03P9244 A 03P9244 B
RFC Board 03P9243 A 03P9243 B
IF AMP Board 03P9232
INTERFACE Board 03P9242
Limitter RU-9099
MIC RU-9253/RU-9371
Magnetron MG5241 MG5436
Circulator RC-3686
Scanner Motor D8G-516 (24 rpm)/D8G-571 (42 rpm)
Signal Cable RW-4873
1-3
1.3 Specifications
SCANNER UNIT
ITEM FR-2115 FR-2125
Radiator Type Slotted Waveguide Array
Radiator Length 4 ft (XN12AF) 6.5 ft (XN20AF) 8 ft (XN24AF)
Horizontal Beamwidth 1.8 deg. 1.23 deg. 0.95 deg.
Vertical Beamwidth 20 deg.
Within +10 deg. to –10 deg. ofmainlobe –28dB or less
SidelobeAttenuation Outside +10 deg. to –10 deg. of
mainlobe –32dB or less
Polarization Horizontal
Antenna Rotation approx. 24 rpm/approx. 42 rpm
Scanner Housing Structure Open Radiator
Standard 1.65 m 2.15 mCompass Safe Distance
Steering 1.25 m 1.60 m
TRANSCEIVER
ITEM FR-2115 FR-2125
Magnetron MG5241 MG5436
Frequency & Modulation 9380 MHz to 9440 MHz, P0N (X band)
Peak Output Power 12 kW 25 kW
0.07 µs, approx. 3000 Hz (S1 : 0.125 nm to 1.5 nm)
0.15 µs, approx. 3000 Hz (S2 : 0. 5 nm to 3 nm)
0.3 µs, approx. 1500 Hz (M1 : 0.75 nm to 6 nm)
0.5 µs, approx. 1000 Hz (M2 : 3 nm to 24 nm)
0.7 µs, approx. 1000 Hz (M3 : 3 nm to 24 nm)Pulselength & PulseRepetition Rate
1.2 µs,approx. 600 Hz (L : 12 nm to 48 nm)approx. 500 Hz (L : 72 nm ,R-type/ 96 nm ,IMO-type)
1.2 µs,approx. 600 Hz (L : 12 nm to 48 nm)approx. 500 Hz (L : 120 nm R-type/ 96 nm ,IMO-type)
Modulator FET Switching
Duplexer Circulator with diode limiter
Tuning Automatic or Manual
Intermediate Frequency 60 MHz
Bandwidth 25 MHz (0.07 µs, 0.15 µs, 0.3 µs), 3 MHz (0.5 µ, 0.7 µ, 1.2 µ)
1-4
DISPLAY
ITEM FR-2115 FR-2125
Picture Tube PPI (Raster scan, Daylight display)
IMO type; FR-2115/2125: 96 nm
Non-IMO type; FR-2115 : 72 nm, FR-2125 : 120 nmRange Scale (nm)
0.125 0.25 0.5 0.75 1 1.5 2 3 4 6 8 12 16 24 32 48 72 96 120
Range Ring lnterval 0.025 0.05 0.1 0.25 0.2 0.25 0.5 0.5 1 1 2 2 4 4 8 8 12 16 20
Number of Rings 5 5 5 3 5 6 4 6 4 6 4 6 4 6 4 6 6 6 6
Bearing Resolution 1.8 deg. (XN12AF), 1.23 deg. (XN20AF), 0.95 deg. (XN24AF)
Range Discrimination Better than 20 m
Bearing Accuracy +1 deg to –1 deg.
Minimum Range Meets 35 m HSC requiments
Range Ring Accuracy
VRM Accuracy1 % of range or 15 m, whichever is the greater
I/O Ports
IEC-61162-1 port (two inputs, J450/J455)
IEC-61162-1 output port (J450) : $RAOSD, $RARSD
ARPA data output port (J454) : IEC-61162-1, $RATTM, ARP-26 required
RS-232C port (input/output, J456) : System program updating
Gyro port (input, J446) : AD100 format
Speed Log port (input, J448) : Contact-closure signal
Alarm output (J452) : +12 V buzzer drive signal
Remote Display port (two outputs, J442/J443) : TRU-HD, BP, TRU-TRIG,VIDEO
EXT. ARPA port (output, J444) : ARPA-HD, ARPA-BP, ARPA-TRIG, ARPA-VIDEO
Interswitch port (J457/J458) : For RJ-7
Monitor port (J449) : For PC monitor, Buffer PCB required
NAV Data Input
IEC-61162-1/NMEA 0183
Own ship’s position : GGA>RMC>RMA>GLL
Speed : RMC>RMA>VTG>VHW
Heading (True) : VHW
Heading (Magnetic) : VHW
Course (Trne) : RMC>RMA>VTG
Course (Magnetic) : VTG>RMC>RMA
Waypoint (Range/Bearing) : RMB>BWC>BWR
Time : ZDA
Loran time difference : RMA>GLC>GTD
Water depth : DPT>DBT>DBK>DBS
Water temperature : MTW>MDA
Standard 1.40 mCompass safetyDistance Steering 1.05 m
1-5
ENVIRONMENTAL CONDITIONS
ITEM FR-2115 FR-2125
Scanner Unit �25 deg. to +70 deg.Ambient Temperature
Display Unit �15 deg. to +55 deg.
Humidity Relative humidity 95% or less at +40 deg.
Vibration IEC 945, Edition 3
POWER SUPPLY & POWER CONSUMPTION
ITEM FR-2115 FR-2125
AC Power Supply110 VAC : 90 to 126 V
220 VAC : 198 to 253 V
DC Power Supply 24/32 VDC : 21.6 V to 41.6 V
DC Set 230 W (no wind)/300 W (100 knots) 260 W (no wind)/330 W (100 knots)PowerConsumption AC Set 360 VA (no wind)/465 VA (100 knots) 410 VA (no wind)/515 VA (100 knots)
2-1
2.1 Overview
Outline
Figure 2.1 Simplified block diagram
TX
The trigger pulse from the SPU (Processor) Board is delivered to the MODULATOR Boardwhich outputs the signal to oscillate the magnetron, and then radar wave is emitted from theradiator.
RX
The 9.4 GHz echo signal received by the antenna is converted to 60 MHz signal by the MIC,amplified by IF Amplifier, and fed to the SPU (Processor) Board as a video signal. It is digitallyprocessed and then displayed on the CRT. The SPU Board contains a video amplifier.
Auto Plotter (optional)
The following signals are applied from the SPU Board to the ARP-26 Board: Heading, Bearingpulse, Video, Trigger, Bearing in AD format, and Ship’s speed in IEC-61162. Target acquisionand tracking are performed on the ARP Board, and displayed on the CRT. Target data includestarget position, CPA, TCPA, Speed, and Course.
Plotter (optional)
Data such as latitude and longitude in IEC-61162 format is delivered from the SPU Board to theRP Board. Plotter data generated on the RP board is output to the SPU Board and processed todisplay them on the screen. The plotter menu is generated on the SPU Board.
Chapter 2. BLOCK DESCRIPTION
2-2
HD
BP
Buffer
VIDEO
EXT HD
EXT BP
EXT TRIG
EXT VIDEO
MOTHERBoard(03P9251)
Level Adj.
Selection SW(Menu-Selection)
Scanner Unit HD,BP, TRIG,VIDEO
RJ-7 orMain Radar EXT HD,EXT BP, EXT TRIG, EXT VIDEO
MOTHERBoard(03P9251)
Buffer
Buffer
Buffer
Buffer
Buffer
BufferLevel Adj.
INT Board(03P9252)
Video Amp.Level Adj.
SPU Board(03P9253)
GYRO Board(64P1106)
PhotoCoupler
NAV DATA
NoiseFilter
SPEED LOG
Photo Coupler
AD-100
A/D CONV.
POWER
A/D CONV.SignalProeessor Memory
RP Board(14P0298)Priority(layering)
Color paletteD/A CONV.
CRT
CPU
Buffer
HD,BP
VIDEO
Buffer
Gate Array(G/A)
A/D CONV. Front end
HD,BPVIDEO
D.P RAM
D.S.PMAIN CPU
D.P RAM
ARP Board(18P9002)
SPDCRS
D.P RAM
Scrolling
VRAM
AGDC
CPU
Multi-plexer
L/L,S/C
PWR Board
Regulator Protector
OvercurrentDetector
TX HV
Rectifier
Ships MainsDC 24/32 V,AC 100/110/115 V or AC 220/230 V
PM Board (03P9225)
Ships MainsAC 100/110/115 VorAC 220/230 V
PerformanceMonitor
+12 V
CPU
Switches(PM ON/OFF, Degauss)
PAL Board(03P9254)
Switches(Radar Picture, Menu)
PAR Board(03P9256)
DEGAUSS Board(PDM9025)
Power
MagnetismDetector
Degauss
PM ON
HALL 1/2
DEGAUSS
Trackball
TB301
Level CONV.(TTL RS232C)
To G/A on SPUPNL Board(03P9255)
SPDCRS
(Optional)
GYROCOMPASS
TO RF UNIT
To degauso coil
2.2 Block Diagram of Display Unit
FR2115-SME-22
Video
From ACRTC
H SYNC/V SYNC/DOT CLK
P.F. Signal from PWR Board
Buffer
CardI/F Board(14P0299)
Chart Card/ERC Card/RAM Card
H SYNC(64 kHz),V SYNC(60 Hz),DOT CLK(108.5 MHz)
(Optional)
(Optional)
(Optional)
(Optional)
AC:03P9245DC:03P9246
2-3
Function of Each Board (Display Unit)
Board Name Function
SPU Board03P9253
1) Contains a video amplitier circuit.(a) Applies GAIN, STC, FTC and IR to video signal and outputs to the A/D
converter.(b) Adjusts video signal input level (adjusted by pot. VR140).(c) Changes STC curve according to the antenna height set on the Radar menu.(d) Echo Stretching 1.
2) Performs A/D conversion of video signal.3) Echo averaging (EAV 1/2/3)4) Constructs radar picture from HD, BP, TRIG, and VIDEO signals.5) Controls keyboard.6) Mixes data being fed from ARP and RP boards to display them on the screen.7) Displays navigation data being fed from a navigator.8) Reads and displays trackball, EBL, and VRM data.9) Controls tuning circuit.10) Outputs “degauss” signal to the DEGAUSS Board.11) Outputs Tx trigger and pulselength signals to the antenna unit.12) Backs up menu settings, radar map, tune voltage, tune Ind. voltage, and
waypoint with the EEPROM (U10).13) Echo Stretching 2/3.
14) Generates menus and radar maps.
15) Echo trailling.
16) Checks for the presence of ARP and RP boards at power-up.
ARP Board18P9002
1) Compatible with latest ARP-23 hardware.2) Converts GAIN-, STC-, FTC-, and I/R-processed video signal to quantized video
(QV) and sends back to the SPU Board.3) Performs automatic and manual target acquisition and tracking.4) Detects HD, BP, TRIG, VIDEO, LOG and GYRO signal errors.5) Calculates CPA and TCPA.6) Detects land echo.7) Outputs ARPA data to the SPU Board : Target No., R/B, CPA, TCPA, etc.8) Processes trial maneuver.
RP Board14P0298
1) Generates data (grid, own ship mark, mark, and ship's tracks, etc.) for the plotterdisplay.
2) Backs up data such as ship's tracks and marks.
3) Reads and displays digitized charts.
4) Outputs plotter display data to the SPU Board.
5) Inputs/outputs data (track, marks etc.) from/to the RAM card.
CARD I/F Board14P0299
1) Receptacles of ROM and RAM cards.
2) Used to stores and retrieves data to/from ROM and RAM card.
INT Board03P9252
1) Outputs HD, BP, TRIG and VIDEO signals to a radar slave display.(J442/443, two output ports)
2) Receives HD, BP, TRIG and VIDEO signals from other radar. (J458)3) Inputs/outputs RJ-7 signal. (J458/457)4) Outputs ARPA data to the external equipment. (IEC-61162-2 , J454)5) Outputs external buzzer signal. (J452)6) Outputs V-SYNC, H-SYNC, R, G, B for a PC monitor or hard copier. A buffer
circuit required.7) Inputs speed log signal, contact-closure. (J448)8) Outputs alarm signals, Buffer board required.
2-4
Board Name Function
PNL Board03P9255
1) Outputs encoded data of EBL, VRM and trackball signals.2) Includes GAIN, STC, FTC, and BRIL volumes.3) Includes EBL ON/OFF, VRM ON/OFF, FUNC 1/2/3/4, and Range +/- keys.4) Reads PAL/PAR board status.
PAL Board03P9254
1) Includes ANT ON/OFF, Performance monitor ON/OFF, and degauss switches.2) Includes CPU Fail indicator (LED).
PAR Board03P9256 1) Keys: HL OFF, PANEL BRILL, ACQ, and menu keys
TX-HV BoardHV-9017
1) Supplies Tx high voltage to the antenna unit.2) Contains overcurrent protector.
DEGAUSSBoardPDM9025
1) Automatically degausses the screen at power-up.2) Detects magnetism and automatically degausses every 20s.3) Degausses the screen when DEGAUSS switch is pressed.
MOTHER Board03P9251
1) Connects each PCB.2) Includes a connector for the antenna unit.3) Includes a connector for the RJ-8.4) Includes a connector for the control head.
GYROCONVERTERBoard64P1106
1) Converts gyrocompass signal into AD format signal.2) Outputs Max. 6 AD format signal (25 ms or 200 ms jumper selection, select 25
ms for radar and ARPA.)
PTU Board (AC)03P9245
1) Outputs -12V, +12V, +140V (for CRT), +5V and +32V (for tuning cont.), andmotor drive voltage.
2) Outputs Power Fail (PF) signal to the RP Board.3) 110 VAC, 24 rpm : 03P9245A
110 VAC, 42 rpm : 03P9245C220 VAC, 24 rpm : 03P9245D220 VAC, 42 rpm : 03P9245F
4) Contains overcurrent protector for -12V,+12V, and +140V.5) Contains abnormal input voltage detector.
110 VAC : Low voltage, 73 to 78 VAC; high voltage, 146 to 170 VAC220 VAC : Low voltage, 130 to 144 VAC; high voltage, 260 to 288 VAC
PTU Board (DC)03P9246
1) Outputs -12V, +12V, +140V (for CRT), +5V and +32V (for tuning cont.), andmotor drive voltage.
2) Outputs Power Fail (PF) signal to the RP Board3) DC 24/32 V, 24 rpm : 03P9246 A
DC 24/32 V, 42 rpm : 03P9246 C4) Contains overcurrent protector for -12V,+12V, and +140V.5) Contains abnormal input voltage detector. Low voltage, 21.6 Vdc; high voltage, 41.6 Vdc
Color MonitorAssy.CDT-2136B
1) No HV is generated when H Sync. Signal is input to the monitor circuit.
PM Board03P9255optional
1) Power supply circuit for the performance monitor
2-5
Start-up SequenceRadar start-up sequence
Process
1. The soft start circuit activates to protect the power ON/OFFrelay contacts.
2. The input voltage monitor checks for abnormal voltage.When ship’s mains is abnormal the ON/OFF relay trips off.
3. The inverter comes on and outputs all line voltages. TheLED comes on and the inverter goes off when overcurrentis detected.
4. ROM, RAM, I/O port, custom IC, AGDC and VRAM areinitialized.
5. The system is initialized using EEPROM and DIP switchdata.
6. The timer starts counting down from 3 minutes (timeremaining for warm-up of magnetron).
7. Checks for the absence/presence of a gyro signal.
8. Checks for the absence/presence of the ARP and RPBoards.
9. The SPU Board starts operating.
Note) When H-sync signal is not applied to the CRT unit,no HV is generated, resulting in nothing on the screen.
10. The bearing scale, countdown indication, etc. appear.
11. The screen is degaussed automatically.
3-minute warm-up can be skipped by pressing [ENTER]several times while pressing and holding down [HL OFF]. (Do not release this information to user.)
12. Three-minute warm-up ends.
13. The radar goes into stand-by.
14. Checks for the presence of the BP (Bearing Pulse) signal.
15. The tuning circuit goes into “short search mode.”
16. When the range is changed, the tuning circuit goes into“short search mode.”
17. Panel settings are written onto the EEPROM.
18. Time data are written onto the EEPROM.
2-6
ARPA start-up sequence
Figure 2.2 ARPA Start-up sequence
Initializes DSP.
CR17 on pcb18P9002 blinks every two seconds.
Waits for initializationof DSP RAM (betweenDSP and MAIN CPU).
FE starts operating.
Monitors gyro andspeed log signals.
FR2115-SME-13
END
Yes
No
OK
Tx ON
Monitors radar inputsignals (HD, BP, TRIG, VIDEO).
No
Yes
Yes
OKNo
Yes
Display radar picture (radar signal processing)
ARPA(18P9002)
Initializes NAIN CPU.
Initializes DSP RAM(between MAIN CPU and SPU).
CR1 on pcb18P9002 blinks.
Tx ON
END
Yes
No
Initializes DSP RAM(between DSP andMAIN CPU).
YesNo
GYRO/LOGAlarm
Normal Operation
The LED on ARPA Boardlights
Power ON
Initializes SPU Board.
Communicate withDPRAM on ARPABoard to confirmpresence/absence ofARPA Board.
YES
Starts up withno ARPA.
Starts up with ARPA.
RADAR
No
Yes
* A reset pulse is generated when +5 V line drops to about 4.2 V.
(03P9253)
2-7
C19
C14
B23
B25
C25
C13
A13
A17
B4
C17
C11
C12
A21
P551
P551
P552
QV
VIDEO
AC SEA VR
GAIN VR
A/C RAIN VR
BEARING
HEADING.P
TUNE IND
KEY CONT.
NAV DATA INTPUT
GYRO DATA
GYRO CLOCK
TRACKBALL
4 Vpp
0.7 V
0 V8 V to 12 V
Video Amplifier
MAX : 5 V, MIN : 0 V
MAX : 5 V, MIN : 0 V
MAX : 5 V, MIN : 0 V
VideoSelector
U43A/D ConverterREF VoltageGenerator U35
(360 pulses,144Hz)
(Gate Array)
Filter
R2/C1
STBY : 0.7 V, TX : About 3 V
U45
TB XA
TB XB
TB YA
TB YB
CPU
#75
#82
#79
#97
#73#74
#75
#76
U17
µs
Max. brilliance : 0.7 Vpp
A30A31A32
P552
To CRT
C20
P552
To CRT
U72,73,74,75,76,77,78
Even Level
Odd Level
Trigger Gen.Odd EchoHandling
SamplingI/F RejectionNoise Rejection
U4503S9060
Signal Processing,Echo Trailing,Echo Processing,
Coordinate Conversion(r, ) (X,Y)
INTTRIG
U15
Echo VideoMemory U24,26,28, 29,30
Priority
U33
TP7 (H SYNC)
TP8 (V SYNC) 4 V
16.63ms
4 V
15.63us
FlashROM(8M) U11
RAM
U5,7
EEPROM
U10
ACRTC
U16
FR2115-SME-23
A22
A23
A24
R134
Trigger Gen.Even EchoHandling
SamplingI/F RejectionNoise Rejection
U4403S9060
U72:VlEVEL 0U73:VlEVEL 2U74:VlEVEL 4U75:VlEVEL 6U76:VlEVEL 8U77:VlEVEL 10U78:VlEVEL 12
U79,81,82,83,85,86,88
U79:VlEVEL 1U81:VlEVEL 3U82:VlEVEL 5U83:VlEVEL 7U85:VlEVEL 9U86:VlEVEL 11U88:VlEVEL 13
U40#6#5 #7
P552
P551
#25
#26
P551
U35
PLLU37
PLLU46
#98#14
#14
#4
#4#103
Timing Adjuster & Divider
INTTRIG
EchoProcessing
U27
EchoTrailingMemory U25
Color PaletleD/A ConverterP/S Converter U34
CRT VIDEO(R,G,B)
A20 To CRT
#97
#47
#48
Sampling Clock
8192 pulses
CharacterGenerator
U42
GraphicMemory
U1,3,4,6,8,9
From RP-26(Video)
CR6
Buffer U18,19
To Dualport RAM in ARP/RP
A17NAV DATA OUTTPUT
CR2#83
CR1
B5KEY DATA
CR5
#80
B4To INS
CR4
B5From INS
CR8
#84
#83
C7TO RJ-7
CR3
C8FROM RJ-7
CR7
#36
#37
TP4(VIDEO)
TP3
C16
P551
OPTION TRIGGER
C17 TX TRIGGER
A25 TUNING CONT.
From U35 #89
TP6
From U35 #83
TP5
From U94 #1
TP9
TP1,2
OSC32 MHz
Y140 MHz
OSC12.5 MHz
OSC
54.25 MHz
4(50 MHz)
* Socket type At board replacement remove EEPROM and put on to new board.
* + cursor generation
SPU Board (03P9253)
Figure 2.3 Block Diagram of SPU Board
2-8
Vid
eo S
igna
l Flo
wT
he f
igur
e b
elow
sho
ws
vide
o si
gnal
flo
w.
Th
e vi
deo
sign
al f
rom
the
sca
nner
uni
t an
d an
ext
erna
l rad
ar a
re a
djus
ted
in le
vel b
y R
21 a
nd R
134
onth
e IN
T b
oard
03P
9252
res
pect
ivel
y so
tha
t th
e m
ain
bang
lev
el a
t T
P6
on t
he I
NT
boa
rd i
s 3.
9 to
4.1
Vpp
. T
he
R14
0 on
the
SP
U
boar
d is
fact
ory-
adju
sted
so
that
the
mai
n ba
ng le
vel i
s 3.
9 to
4.1
Vpp
at T
P12
.
The
vid
eo s
igna
l fro
m th
e S
PU
boa
rd to
the
AR
P b
oard
is g
ain-
, ST
C-,
and
A/C
sea
-adj
uste
d.
Whe
n th
e ra
dar
is u
sed
as a
rem
ote
disp
lay,
no
sign
al is
out
put f
rom
Ext
erna
l AR
PA
and
RJ-
7 po
rts.
Fig
ure
2.4
Vid
eo S
igna
l
J417
MO
TH
ER
Boa
rd
IF IN
03P
9251
J414
1A
19A
20A
21
From
RF
U
nit
J444
INT
Boa
rd03
P92
52
P41
7T
P1
J458
8
TP
3
R21
R13
4
K2
C5
VID
EO
SE
LJ4
17
abou
t 4.
5 V
pp
abou
t 4
Vpp
+12
V
Q18
,19
Q40
,41
Q37
,38
Q27
,28
Q10
,11
Q22
,26
Q8,
9
Mai
n/re
mot
e di
spla
y an
dR
adar
1/2
sel
ectio
n
AR
PA V
IDE
O
RJ7
VID
EO
OP
VID
EO
A
OP
VID
EO
B
RF
VID
EO
8 15
J457
8
J442
8
J443
C21
C22
B21
P41
7
A19
A20
A21
Ext
erna
l rad
ar o
r R
J-7
J551
MO
TH
ER
Boa
rd
IF IN
03P
9251
J414
C14
Ext
erna
l AR
PA
RJ7
Sla
ve d
ispl
ay
Sla
ve d
ispl
ay
C21
C22
B21
R14
0
SP
U B
oard
P55
1
Vid
eo A
mp.
(GA
IN,A
/C S
EA
-an
d A
/C R
AIN
Adj
ustm
ent)
C14
abou
t4
Vpp03
P92
53T
P12
A18
P55
1A
RP
B
oard
TP
6
FR
-211
5-S
ME
10E
abou
t4
Vpp
2-9
Ant. Height(menu selection)
Buffer
Q9
Mix
Q17
Gate
U87
Filter Buffer
Q11, Q12
Gate
U56
One-shot
U35(Gate Array)
Inverter
Q28
Differential
Q27
Mix
Q46
Amp. &Buffer
Q44, 55, 56
Peaking
Q26
Gain &STCControlQ66, 67
STC Buffer
Q25, 52, 53
A/C RAIN
CR75
Buffer
Q65
Amp.
U93
D/A Conv.
U68 U35
STC VR Curve Generator
Q30, 32, 10, U92
STC inA/C AUTOmode
Q18
STC data memory
0 to 5 V
TP12 TP11
0 to 5 V
TP9
SMPL T
GAIN: -7 to 0 V
A/C SEA: 0 to 5V
A/C AUTO(From SPU Board)
R140
A/C AUTO : OFF
A/C AUTO : ON
*not used
A/C RAIN: -7 to 0 V
about4 Vpp
about 4 Vpp(Adjust by R140) about 4.2 Vpp
3.5V
01us
Block Diagram of SPU Board (Video Amplifier)
VIDEO IN
Conv.
U100Conv.
U100
TP13
STC Curve
Echo stretch(range direction)
Q60 ‘Q64
Gate
U54
Echo stretchon/off
U95
Amp.
Q35, Q37
Gain Cont.
Q34
VideoContrastSelector
U96
Log to LinearConverter
CR57, 59, 71, 72
Amp.
Q13, 14, 21
Buffer
Q22, 23, 15
Gain Cont.(short range)
Q19/20*Gain reduced when FTC is on. *Noise is controlled and
gain lowered on ranges up to 6 mile.
U43
RF VIDEO(To AD Conv.)
TP4
QV VIDEO(From ARPA Board:P551 C19)
FR2115-SME-10G
0 V
4.5 V
Range
High Antenna
Low Antenna
Antenna Height vs. STC Curve
0 V
4.5 V
Range
Sharp Curve (H)
Near STC Curve Selection
Gentle Curve (L)
Standard (M)
10 us
Video contrast(menu selection)
about 4.0 Vpp
1) Mixer (Q17): In A/C AUTO mode, the pulse, whose level is the same as the main bang, is mixed with the video signal. The falling edge of the pulse is coincident with the beginning of the video signal.
2) Mixer (Q46): The output of Q17 is amplified in reverse polarity by Q28, and at the same time, differentiated and then amplified by Q27. The output of Q27 and Q28 is mixed so that the positive video signal without ac component is obtained. Mixer eliminates the DC component of the video signal, or outputs the ac component of the video signal.
3) Peaking (Q26): not used. To improve range discrimination on short ranges, add capacitor C228, 56 to 100 pF on the SPU board.
4) STC Curve: The STC curve is menu-selectable; "ANT HGT", INITIAL SETTING 1 and "CTR STC CURVE", INITIAL SETTING 4. The latter is determined the STC curve near screen center, up to about 10 us.
5) STC in A/C AUTO mode (Q18): A/C AUTO works more effectively, compared with the FR-2100 series. Under heavy rain, use AC AUTO rather than AC SEA, and reduce the gain setting.
6) Video constant (U96) : The video constant is selected in the initial setting 3 menu. Factory-setting is 3 for long range detection, Under snow, rain, and heavy sea, select either 1 or 2. 1: Wide dynamic range. Similar echo to FR-2100. 2: Middle dynamic range. 3: Narrow dynamic range, but high visual intensity.
Figure 2.5 @STC Curves
Selector
VIDEO(To ARPA Board:P551 A18)
2-10
Auto Tuning Function
The system provides auto tuning mode which eliminates the adjustment of the receiver formaximum echoes. The “Tune Initialization” is required after not only the installation but also thereplacement of RF unit, magnetron, MIC, and SPU board, so that the tune control voltages foreach pulse are memorized onto the EEPROM. The figure below illustrates how the tuneinitialization takes place. First, full search is performed using a long pulse to find the tuningpoint (a). Next, short search is performed using all pulses to find tuning points (b). After theinitialization, the pulselength used before the tune initialization is selected.
Full search: Varying tune control voltage (TUNE CONT) from about 5 V to 30 V, the maximum tune indicator voltage is found and that tune control voltage (a) is memorized.
Short search:The tune control voltage changes between the tune voltage (a) plus and minus 2.5 V for fine tuning.
When the radar is set from ST-BY to TX, short search is made twice. When the pulselength ischanged, short search is made once.
Figure 2.6 Tune Initialization
about 32 V
Tuningcontrolvoltage
about 2 V
(a) (b)
Fullsearch
Shortsearch Tracking
Time
LP
Tuningindicatorvoltage
Max. about 3 V
Min. about 1 V
FR2115-SME-14
(b) (b) (b) (b) (b)
LP M3 M2 M1 S2 S1Pulselength
EEPROMbackup
Auto andMan. coarsetuning pt.
Max.Tuning Ind.voltage
Max.Tuning Ind.voltage
Pulse length in useAuto coarsetuning point
Max.Tuning Ind.voltage
Max.Tuning Ind.voltage
Max.Tuning Ind.voltage
Max.Tuning Ind.voltage
2-11
Tuning IndicationThe tuning indicator extends more than 80% of its full length on all ranges at best tuning. Theself-test result display reads the tune indicator voltage.
Manual TuningWhen tuning mode is changed from auto to manual mode, the tuning control voltage (a) found infull search is selected. In manual tuning mode, the graphical tuning control voltage indicatorappears under the tuning indicator. The minimum scale is 2 V and the maximum scale is 32 V.
Tuning CircuitFigure below shows the tuning circuit. Tune control voltage is output from P551, A25 on theSPU board.
Figure 2.7 Tuning Circuit
GA
U35
GA
U44
ENC-ODERU44
D/ACONV.
B21
A25
U62
x1F VT
0 to 5 V
#10 #8
#1#3
x6C VT #12 #14 U94
SUMTUNE CONT.(To MOTHER Board)
FR2115-SME-10B
P551P551
U94
U94
B22
TUNE ENC A.
(From MOTHER Board)
TUNE ENC B.
2-12
Echo averaging (EAV 1/2/3)Remarks on the echo-averaging feature
Echo averaging is a useful feature when used properly. If used improperly, however, theresult could be disastrous.
Objective and principle of echo averagingThe main objective of echo averaging is to discriminate targets (flocks of birds, other ships,fishing floats, etc.) hidden in sea clutter, and stably display long range targets (ship, buoy,island, etc.) which alternately appear and disappear on the screen.
Normally, unstable echoes such as those from sea clutter and noise appear at randompositions with every rotation of the antenna. To distinguish real target echoes from clutter, thepicture is stored and averaged over successive picture frames. If an echo is solid and stable itis shown in its actual intensity. Unstable echoes are reduced in intensity.
The following illustrates how echo averaging EAV 1/2/3 work.
Figure 2.8 Echo Averaging
2-13
Memories & Memory Frame PriorityMemory capacity is 2048x2048 dots, radar display area is 1280x1024 dots, and radius of echodisplay area is 360 dots.
FR-2115-SME-28
360 dots1024 dots
1280 dots
2048 dots
2048 dots
+
+Cursor
Characters Menu Data Mask
Cursor GyroU1 and U3 (4 frames)
no frame
ARPA
Each 1/4 of U4,U6,U8 and U9 (2 frames)RP
no frame (data from RP)Radar mark
Radar mapEach 3/4 of U4 and U6 (3 frames)
Each 3/4 of U8 and U9 (3 frames)Radar echoEcho trailEcho in alarm area
U24,U26,U28,U29,U30 (5 frames)
Highest priority
Figure 2.9 Memory Capacity and Display Area
Figure 2.10 Priority of Each Frame
2-14
Ant
enna
on/
off C
ontr
olT
he S
PU
boa
rd p
rodu
ces
the
ante
nna
on/o
ff si
gnal
. T
he
PW
R b
oard
mon
itors
the
num
ber
of
the
bea
ring
puls
e fr
om t
he s
cann
er
unit
and
chan
ges
mot
or c
ontr
ol v
olta
ge
to m
aint
ain
the
cons
tant
spe
ed o
f an
tenn
a ro
tatio
n. T
he v
olta
ge
betw
een
#1/
#2 a
nd #
3/#4
of
J103
is
abou
t30
VD
C w
ith th
e sc
anne
r un
it di
scon
nect
ed.
To
rota
te th
e an
tenn
a, th
e fo
llow
ings
mus
t be
satis
fied.
1) T
X k
ey p
ress
ed
2) #
A6
of P
551o
n th
e S
PU
boa
rd is
“hi
gh”
3) #
7 of
J10
3 on
the
PW
R b
oard
is “
high
”
4) 1
4 to
24
V d
eriv
ed f
rom
#1/
#2 a
nd #
3/#4
of J
103
on th
e P
WR
boa
rd
Fig
ure
2.11
Ant
enna
on/
off C
ontr
ol
A6
P55
1G
/A
U35
TX
Key
TX
FH
ST
BY
FL03
P92
53(S
PU
Boa
rd)
17
P31
3
AN
T S
W
PAL
Bor
d
17
AN
T O
N/O
FF
S 1
B18
J312
03P
9255
B19
2 3
J313
A6
J551
03P
9251
7
A18
A17
J412
C8
#16
#1#3
2
J415
J417
7
J103
TX
FH
ST
BY
FL
03P
9245
(PW
R B
oard
)
5
P41
703
P92
52(I
NT
Boa
rd)
5
J467
For
TX
/RX
dow
n A
NT
ON
/OF
FE
FR
-213
5SE
FR
-213
5SW
EF
R-2
165D
SE
FR
-212
5WE
FR
-215
5
03P
9254
PAN
EL
Boa
rdM
OT
ER
Boa
rd
5
AN
T.
S
PE
ED
5
6B
P(F
rom
RF
Uni
t)6
22
DJ1
J551
A5
P55
1G
/A
U35
03P
9253
#16
#4
#17
SP
U B
oard
A5
U20
U57
#18
#46
U51
FR
2115
-SM
E-1
0C
Sof
t sta
rtco
ntro
l
Com
para
tor
Cho
pper
Con
trol
Cho
pper
Q94
U92
CR
94,Q
97
F/V
Con
vert
er
U93
1,2
3,4
J103
MO
TOR
(+),
MO
TOR
(-)
EF
R-2
115
EF
R-2
125
*DC
14 to
24
V(W
ith A
NT
) D
C30
V(W
ith o
ut A
NT
)
2-15
Check of ARP and RP board ConnectionThe system checks the connection of the ARP and RP board every power on. If the CPU on theSPU board fails to communicate with the ARPA or RP board, the related display does not appearon the screen, but also the ARP and/or RP line is not displayed on the self-test result display.
ARP-23 vs. ARP-26
The ARP-26 uses the latest hardware of the ARP-23 for FR-2100 series radars, 18P9002-2having U44 of 18S9007. The boards level –1 and –2 having U44 of 18S9001 cannot be used forARP-26. The software has been changed to improve the performance.
The major functional differences are;
1) Operational with 42 rpm scanner unit (ARP-23: 36 rpm)
2) “Scenario” in compliance with HSC performance standards (no scenario)
3) A maximum of 3 reference targets (one target)
4) Variable width of automatic acquisition area from 0.5 to 1.0 nm (0.5 nm fixed )
5) Guard zone alarm for both inward and outward violations (inward only)
6) Vector display time selectable either after 1 min. or within 20 scans (after 1 min.)
7) VBW and VHW speed data in IEC-61162-1 acceptable (not acceptable)
8) TCPA having a minus sign when the ship already passed through the CPA. (always plus)
9) ARPA alarm if watchdog timer signal from the ARP is not received by the SPU boards. (no alarm)
10) Target number of a lost target not being used until all target number are used once.
(using target number of lost target)
2-16
Simple ARPA block diagram
2-17
ARPA block diagram
# #
Figure 2.12 Block Diagram of ARP Board
VideoSweepVelocityConverter
Memoryfor EchoSamplerU56 to 58
Land EchoDetectionTableROM U64
REF OSC U27
LatchU13
RAMU36 to 39
ROMU40
D.P.RAMU45,46
FEDSPU35
BUSI/F
BUSI/F
GYROI/F
GYROCheck
LOGI/F
LOGCheck
TRIGCheck
FIFOU60
HDcheck
Videosignalcheck
BPcheck
D.P.RAMU21,22
Latch U41
BP Counter
Comparator
A/D Converter
ROMU3
RAMU9,10
EEPROMU8
D.P.RAMU4,11
MAIN CPUU2
DIP SWS1
StatusSwitchforErrorDetection
U42,47
Echo Sampler
To SPU Board's DP BUS
CR1
(Blinks every2 sec.)
CR17
TP10
TP11
TP12
TP4
TP2
TP6 TP7
CR32
TP9(QV monitor)
QV output
TP1 TP3
TP5TRIG
VIDEO
BP
HD
TP8
R103(MAX)
R104(MAX)
+5 V
-12 V
+12 V
SpeedLog
Gyro
CR9 (HD Alarm)
CR10(BP Alarm)
CR11(VIDEO Alarm)
CR12(TRIG Alarm)
CR13(<1250 Hz)
CR14(Not Used)
CR15(GYRO Alarm)
CR16(LOG Alarm)
BP U52PLL VCO
FR2115-SME-16
OSCY1
Noise blanker
(Blinks randomly.)
U59
18S9007 U44
2-18
ARPA target acquisition and Tracking
1. Conditions for manual acquisition
The target can be acquired manually under the following conditions.
1) An echo from target must be received for three consecutive sweeps and scans within the acquisitionarea.
2) The target echo must be smaller than the and echo data (at the front end processor).3) A target must be within the acquisition area : 0.2 to 32 nm.4) The ARPA can acquire 30 targets. All 30 may be acquired manually, or 10 manually and 20 auto-
matically.5) No signal error (TRIG, HD, BP, VIDEO, gyro) shall be detected.
2. Conditions for automatic acquisition
The target can be acquired manually under the following conditions.
1) An echo from target must be received for three consecutive sweeps, and seven consecutive scanswithin the acquisition area.
2) The target echo must be smaller than land echo data (at the front end processor).3) The target must be within acquisition area: 0.1 to 32 nm (or 24 nm) depending on initial setting.
Target echoes behind a land echo within the acquisition area cannot be acquired automatically.4) 20 targets can be automatically acquired.5) No signal error (TRIG, HD, BP, VIDEO, gyro) shall be detected.
3. Automatic tracking
1) A tracked target is judged as a lost target when no return is received for nine consecutive scans.When the system detects a lost target, “LOST TARGET” appears on the display and the ARPAsymbol blinks.
2) A lost target will be reacquired and tracked when acquisition condition again becomes satisfactory.3) Automatic tracking is discontinued when the target moves out of the acquisition range (less than 0.1
nm or greater than 32 nm).4) An acquired and tracked target which moves behind a land echo will be declared as a lost target.
ARPA Land DiscriminationA target is recognized as a landmark and not acquired if it is bigger than the preset value in rangeor bearing direction. The preset value is entered though the ARPA Initial setting menu.
2-19
ARPA INITIAL SETTING MENU
Accessing Menu for ARPA Initialization. Press the [RADAR MENU] key five times while pressing and hold-ing down the [HL KEY] key.
ARPA INITIAL SETTING Menu(Keying sequence : [PLOT MENU] [0] [0])
TARGET SELECT
Selected is minimum size of target echoes which will be judged as land.
An echo judged as land cannot be acquired manually or automatically nor is lost targetstatus generated. This discrimination is especially necessary on the S-band radar where thehorizontal beamwidth is greater than that of the X-band radar.
The settings and their specifications are as follows :
0 : Greater than 600 meters
1 : Greater than 800 meters
2 : Greater than 1200 meters
3 : Greater than 1600 meters
4 : No limit
QV SELECT
Requires no local adjustment; however, it judges whether an echo is land or not by paintingechoes in varying intensity or color. To enable QV SELECT, remove jumper JP11 on the18P9002 board:
0 : All echoes painted brown (same as QV on previous radars)
1 : Brown color (non-land echoes) Yellow color (land echoes, azimuth direction)
2 : Brown color (non-land echoes) Yellow color (land echoes and target echoes behind land echoes)
3 : Brown color (all echoes) Yellow color (leading and trailing edges of all echoes)
2-20
TARGET OUTPUT DATA
Output setting of “RATTM” data, output by J454 on the INT Board.
OFF : “RATTM” data not output.
REL : “RATTM” data output. Target course shown in relative bearing.
TRUE : “RATTM” data output. Target course shown in true bearing.
DISP CPA,TCPA
Selects wether CPA and TCPA are displayed or not on the screen.
START TIME TARGET VECT
Selects time to allow the vector to appear on the screen after the acquition
1 MIN: The vector appears on the screen 1 minute after the acquisition.
20 SCANS: The vector appears on the screen 20 scans after the acquisition. (about 50 seconds: 24 rpm, about 30 seconds: 42 rpm)
TARGET DATA
Course in the target data can be displayed in relative or true mode when the relative vectoris selected.
INPUT SIGNAL CHECK
[INPUT SIG CHECK 1](Keying sequence : [PLOT MENU] [0] [8])
HD = OK ERR (No heading signal input to ARPA Board for 10 seconds)
BP = OK ERR (No bearing signal input to ARPABoard for 10 seconds)
T = OK ERR (No trigger signal input to ARPABoard for 10 seconds)
V = OK ERR (No video signal input to ARPA Board for 60 seconds)
TGT SEL = 1 Setting on AUTO PLOT INITIAL SETTING menu
LOG PULSE = 200P Log pulse setting on RADAR INITIAL SETTING 1 menu
LOG SPEED = 21.0kt Calculated speed using contact closure signal
MAN SPEED = . kt Manually entered speed on the radar [FUNCTION] menuGYRO = 239.9 AD100 format gyro data being received
SET = . “Set” setting on AUTO PLOT 2 menu.
DRIFT = . kt “Drift” setting on AUTO PLOT 2 menu.
HD ALIGN = 000.0 Heading alignment value entered on RADAR INITIAL SETTING 1menu.
CPU1 COUNTER = 1636 Counts up by five every five second if CPU1 is normal.
CPU1 STATUS = 0000 Shows CPU1 status. 0 if normal.
CPU2 COUNTER = 1433 Counts up by 5 every five seconds if CPU2 is normal.
2-21
CPU2 STATUS = 0000 Shows CPU2 status. 0 if normal.
LOG SENSOR Log sensor type.
EXT SPEED IEC-61162 serial speed data being received; VTG/VHW/VBW If no serial data, xxx.x appears.
EXT COURSE IEC-61162 serial bearing data being received; VTG/VHW/VBW
:KHQ#VSHHG#GDWD#LV#EHLQJ#IHG#IURP#D#VSHHG#ORJ#RU#HQWHUHG#PDQXDOO\/# # # # # # # # # # # # # # # # # # # # # # # # # # WKH#FRXUVH#GDWD#LQ#9+:#LV#XVHG1
[INPUT SIG CHECK2](Keying sequence : [PLOT MENU] [0] [8] [0])
No. 1 = 1234 Echo count at front end processor. If “0” or “2000 or higher” isdispalyed, adjust the video level with VR103 on the ARP Board.Replace ARP Board if the value does not change at the adjustment.
7R#FKHFN#WKH#IURQW#HQG/#URWDWH#WKH#JDLQ#FRQWURO#NQRE#IURP#IXOO\#FZ#WRIXOO\#FFZ#DQG#UHDG#WKH#HFKR#FRXQW1#,I#WKH#QXPEHU#GHFUHDVHV/#WKH#IURQWHQG#IXQFWLRQV#QRUPDO1
No. 2 = 0362 Number of echoes to be received by the DSP. If the number is not the same as that of No. 1, the gain setting must be decreased. The DSP overloads receiving many echoes.
No. 3 = 0000 “0” indicates normal. For other than of “0” replace the ARP Board.
MIN HIT = 3 “3” indicates normal.
SCAN = 240 Heading signal input interval in resolution of 0.01 sec. (240=2.4 sec)
FE STATUS = 0000 Front end processor status. Normal if “0”
AUTO = 07 Number of automatically acquired targets being tracked.
MAN = 03 Number of manually acquired targets being tracked.
LOST = 01 Number of lost targets.
2-22
Block Diagram of RP BoardThe RP System program is stored on the flash POM, U3 and the program update is performed byusing the program card. The card must be inserted into the upper slot.
The CR1 on the RP board lights when the program is replaced with new one.
RP marks are generated in the following VRAMs or frames on the RP board respectively, andsent to the SPU board.
1) Track, Mark, and Depth line, etc.;
Uses frames 1 (R:U51), 2 (G:U52) and 3 (B:U53)
2) Grid; uses frames 3 (U53) and 4 (U50)
3) Counter line, and coated land area; uses frame 5 (U49)
Note that waypoint and nav line data is memorized by the SPU board.
Figure 2.13 Block Diagram of RP Board
FR2115-SME-18
Power FailU15
DIP SW P.F(Activated by H)
CPU (FR-30)
U13
OSC12.5 MHz U17
Dual Port RAMRAM8 K bytes U4
BufferU22,23,27, 30,31,32
I/O PortU21
Memory Card(4 M bytes)
IF Board14P0299
To SPU Board(Communication Data)
SRAM256 K bytes U8,9
AGDC 2Controller U15
DRAM2 M bytes U2
Flash Memory1M bytes U3
Real TimeClock U1
Addres & DataMultiplexer U28,29
BatteryBack-up U5
AGDC 2 U14
Addres & DataMultiplexerU18,19,20,24,25,26,35
VRAM 4 M bits(5 frames) U49 ‘53
Horizontal Scroll ASIC U36
Character Gen. U33
INT 2(PF)
INT 0(VSYNC)
Address &Data Bus
INT 1(DPRAM)
To SPU Board(HSYNC, VSYNC,CLK)
To SPU Board(Video Data)
x4(50 MHz)
OSC U16
32 MHz
*Working area for running program
*Memory for Track & Mark
*(not used)
CR1
2-23
INPUT/OUTPUT Data on INT Board (03P9252)
Port Name
I; input,
O: output
Signal Name Signal FormatEquipment
ConnectableRemarks
J442 (O)
J443 (O)Slave display
TRUE-TRIG, VIDEO,TRU-HD, BP
Radars havingslave func-tion
Timing between TRU-TRIG andVIDEO adjusted, HD adjusted, BP:360 pulse/rotation.
J444 (O) External ARPAARPA-TRIG, VIDEO,ARPA-HD, BP
Other make’sARPA
Timing between ARPA-TRIG and VIDEO adjusted on ARPA,HD adjusted BP:360 pulse/rotation.
J446 (I) HDG AD10 format, 25 msec
GC-1/2/6/7/8AD-10/10S/100
Generating HM, NU/TM modes,True EBL, True vector(E-PLOT),signal processing 1/2/3, Trueecho trail, ARP-26.
J448 (I) SpeedContact closure(200 or 400 pulses)
DS-30/70CI-30/60/80GP-500GP-500MK2
Ship’s speed data, TM mode, True vector (E-PLOT), signal processing 1/2/3, True echo trail, ARP-26.
J449 (O) Remote display R, G, B, H-SYNC, V-SYNC
Monitor,Printer Buffer Board (03P9229) required
J450 (I/O) Nav dataNMEA0183 V2.0(Current Loop)
I:Navaid; GP-70MK2 GP-80 GP-500MK2
O:PC
I:L/L, Speed/Course, L/L of +cursor, Dated & Time, Current , Depth, etc.
O:RSD,OSD
IEC 61162
(RS-422 Level)J452 (O) External buzzer
+5 VBuzzer 150 mA max.
J453 (I) Analog Analog data Not used
J454 (O) ARPA dataNMEA0183, V2.0(RS-422 Level)
GD-551, PC $RATTM (ARPA Tracking TargetData)
J455 (I) INS data
NMEA0183, V2.0
(Current Loop or
RS-422 Level)
INS Receiving VHW/VBW from DS-30/50 etc., HDT, HDM and HDG.
J456 (I/O) RS-232C RS-232C level PC For program update
J457 (I/O) RJ-7 RJ-7 Input/Output RJ-7
J458 (I) RJ-7TRUE-TRIG, VIDEO,TRU-HD, BP
RJ-7 or Radar havingoutput forslave display
Timing between TRU-TRIG and VIDEO adjusted, HD adjusted, BP:360 pulse/rotation.
J463 (O) I/F Power Supply +5 V, -12 V, +12 VAdditional Circuit e.g. Buffer Board
+5 V: 100 mA max.
+12 V: 200 mA max.
-12 V: 200 mA max.
2-24
Sentences Receivable at J450 on INT-9170
Data to be displayed
Sentence O S & Cursor Position
RNG &BRG toWPT
SPD Water Temp.
Water Depth
Date &Time
ARP-26SPD
ARP-26ExternalWPT
BWCBWR
X X
DPTDBTDBKDBS
X
GGAGLL X
VBWVHW
X X
MTW X
RMA X X X
RMB X
RMC X X X
VTG X X
ZDA X
2-25
Radar and ARPA output signal from INT-9170 (J442, J443 and J444)
TRIG Signal (TRIG)Polarity/Voltage : Positive, +12 V
Pulselength : 4 µs (J444)5 to 10 µs (J442/J443)
VIDEO Signal (VIDEO)Polarity/Voltage : Negative, 4 Vpp
Characteristic : Input of amplifier
GAIN/STC : Not controlled
BEARING Signal (BP)Pulse : 360 pulses/one ant. rotation
Polarity/Voltage : Positive, +12 V
Duty Cycle : 50% 20%
HEADING Signal (HD)Polarity/Voltage : Negative, +12 to 0 V
Timing : Negative going edge
2-26
Monitor signal from J449 (requires buffer circuit)
1. CRT required (non-interlace)
2. Video signal
Video signal
63.974 kHz (15.63 us),1696 dots
0.59 us, 64 dots
11.80 us,1280 dots
1.18 us,128 dots
2.06 us, 224 dots
Video signal
FR2115-SME-11
60.013 Hz (16.66 ms),1066 dots
16 us, 1 dots
16.00 ms,1024 dots
47 us, 3 dots
593 us, 38 dots
H - sync signal
V-sync signal
370 mm(1280 dots)
295 mm(1024 dots)
275 mm(720 dots)
2-27
Power Supply Circuit (DC)
DC PWR Board (03P9246)
The PWR board contains a main-inverter, a sub-inverter, and protectors. The main-inverterproduces +24 V and +32 V (for scanner motor), while the sub-inverter produces –12 V, +12 V,+32 V, and +140 V from +24 V, output of the main-inverter. +5 V is generated by chopping +24V. Power fail (P.F.) signal generator outputs “High” signal normally and “Low” signal when themain-inverter fails. +24 V is adjusted by VR51.
Main-inverter:
With the POWER switch pressed, +12 V regulator, Q1 turns on, and over- and low-voltageprotectors and switching regulator controller are powered up. The protector U1 activates whenship’s main is lower than 19.5 VDC and higher than 42 to 46 VDC. The switching frequency isadjusted by VR1.
Sub-inverter:
The sub-inverter produces –12 V, +12 V, +32 V, and +140 V from +24 V, the output of themain-inverter. These lines are not stabilized, but the +24 V line is stabilized by the main-inverter.The switching frequency is adjusted by VR71.
Protector:
Over-current detector U91in the scanner motor power line (ANT MOTOR line) activates whenthe current is 6 A or more for 0.8 seconds. The short circuit protector U72 operates when +140 Vline is short-circuited. The output from the U72 is latched by Q33 and then send to the switchingregulator controller U11.
Power for Scanner Motor:
Rectified +32 VDC is applied to the scanner motor through the ANT MOTOR line, MOTOR(+)and MOTOR(-). The F/V (Frequency to Voltage) converter U93 receives bearing pulses (BP)from the scanner unit and outputs DC signal depending on the frequency received. Thecomparator Q94 compares the output of the F/V converter with the antenna speed data, 24 rpmor 42 rpm. If the antenna speed is lower or higher than the rating, the comparator outputs thesignal to control the scanner motor supply voltage. Thus, the motor rotates stably.
The VR91 adjusts the antenna rotation to 24 rpm (no adjuster for 42 rpm). The number of theantenna rotation can be read on the self-test menu.
The table below summarizes how to select the antenna speed data.
Rotation JP91 JP92 R98 Menu selection
24 rpm Removed Removed 4.7 k ohms Disregarding menu setting
42 rpm Removed Connected 1.2 k ohms Ant. revolution, Radar 3 menu; H
2-28
1,2,
3,4
5.6,
7,8 1 3
6B
.P24
rpm
(144
Hz)
48 r
pm(2
50 H
z)
+14
0 V
+32
V +
12 V
-12
V
J101
J103
T1
DC
PW
R B
oard
(03
P92
56)
FR
2115
-SM
E-2
7B
4,5
+5
V
J102
Inpu
t F
ilter
C1,
C2,
C3
Sm
ooth
ing
Circ
uit
Shi
p's
Mai
ns24
/32
Vdc
Pow
erS
witc
h
+12
VR
egul
etor
Q
1
Ove
r an
d lo
wV
olta
ge
Pro
tect
or
U
1
Sw
itchi
ngR
egul
ator
Con
trol
ler
U
11
Driv
er
Q11
~14
P.F.
Sig
.G
ener
ator
Q81
,U33
Vol
tage
Det
ecto
r
U51
Vol
tage
P
rote
ctor
Latc
h
Q33
Mai
n-in
vert
er
+32
V
CR
52
+24
V
CR
51
Cho
pper
Con
trol
U92
Cho
pper
CR
94,Q
97
Com
para
tor
Q94
F/V
Con
vert
er
U93
Sof
t Sta
rtC
ontr
ol
Ove
rcur
rent
Det
ecto
r
U91
Cho
pper
Cho
pper
Con
trol D
river
Q71
,72
Sho
rt-c
ircui
tP
rote
ctor
U72
Sw
itchi
ng R
egul
ator
Con
trol
ler
U
71
T71
Sub
-inve
rter
Low
/Hig
h V
olta
ge S
ig.
5A
NT.
SP
EE
D*M
enu-
Sel
ectio
n H
ight
Spe
ed :
H
J103
7A
NT.
ON
/OF
F*T
X :
H S
T-B
Y :
L
J103
1,2
3,4
MO
TOR
(+)
MO
TOR
(-)
J103
J105
10P.
FJ1
05
VR
1(M
ain-
inve
rter
fr
eq a
djus
tor)
VR
51(+
24 V
adj
usto
r) VR
71(S
ub-in
vert
er fr
eq a
djus
tor)
CR
81~
86
VR
91(2
4 rp
m a
djus
tor)
U61
,CR
61
Ove
rcur
rent
Det
ecto
r
U
81+
24 V
J107
1
H o
r L
2-29
Power Supply Circuit (AC)AC PWR Board (03P9245)
The PWR board contains a main-inverter, a sub-inverter, and protectors. The main-inverterproduces +24 V and +32 V (for scanner motor), while the sub-inverter produces –12 V, +12 V,+32 V, and +140 V from +24 V, output of the main-inverter. +5 V is generated by chopping+24V. Power fail (P.F.) signal generator outputs “High” signal normally and “Low” signalwhen the main-inverter fails. The RP data is backed-up when the P.F. signal is received. +24 V isadjusted by VR51.
Main-inverter:
With the POWER switch pressed, +12 V regulator, Q1 turns on, and over-voltage and low-voltage protector, relay drive circuit, and switching regulator controller are powered up. Theprotector U1 activates when ship’s main is lower than 85 VAC and higher than 135 to 150 VAC.If ship’s mains is higher than 135 to 150 VAC, the relay in the input line, K1 is turned off by thesignal from the protector U1, and no power is supplied to the main-inverter. The switchingfrequency is adjusted by VR1. A rush current protector Q1 and R2 prevents rush current frombeing flow into smoothing capacitors C11 and C12. When the smoothing capacitors are chargedto the rated voltage, the main inverter starts oscillating. The output of the T1 turns on triac Q1and the R2 10 ohms, 5 W is short-circuited. Ship’s mains 110 VAC or 220 VAC is jumperselectable as show in the table below. Smoothing capacitors C11 and C12 are charged by 100 to170 VDC respectively. +5 V is generated from 24 V by a chopper IC.
Ship’s Mains JP1 JP2 JP3 JP4 Fuse
110 VAC Connected Connected Connected Removed 10 A
220 VAC Removed Removed Removed Connected 5 A
Sub-inverter:
The sub-inverter produces –12 V, +12 V, +32 V, and +140 V from +24 V, output of the main-inverter. These lines are not stabilized, but the +24 V line is stabilized by the main-inverter. Theswitching frequency is adjusted by VR71.
Protector:
Over-current detector U91in the scanner motor power line (ANT MOTOR line) activates whenthe current is 6 A or more for 0.8 seconds. The short circuit protector U72 operates when +140 Vline is short-circuited. The output from the U72 is latched by Q33 and then send to the switchingregulator controller U11.
Power for Scanner Motor:
Rectified +32 VDC is applied to the scanner motor through the ANT MOTOR line, MOTOR(+)and MOTOR(-). The F/V (Frequency to Voltage) converter U93 receives bearing pulses (BP)from the scanner unit and outputs DC signal depending on the frequency received. Thecomparator Q94 compares the output of the F/V converter with the antenna speed data, 24 rpmor 42 rpm. If the antenna speed is lower or higher than the rating, the comparator outputs thesignal to control the scanner motor supply voltage. Thus, the motor rotates stably. The VR91adjusts the antenna rotation to 24 rpm (no adjuster for 42 rpm). The number of the antennarotation can be read on the self-test menu. The table below summarizes how to select the antennaspeed data.
Rotation JP91 JP92 R98 Menu selection
24 rpm Removed Removed 4.7 k ohms Disregarding menu setting
42 rpm Removed Connected 1.2 k ohms Ant. revolution, Radar 3 menu; H
2-30
1,2
5.6 7 8
6B
.P24
rpm
(144
Hz)
48 r
pm(2
50 H
z)
+14
0 V
+32
V +
12 V
-12
V
J101
J103
T1
AC
PW
R B
oaed
(03
P92
45)
FR
2115
-SM
E-2
7
4,5
+5
V
J102
Rus
hC
urre
ntP
rote
ctor
Q1
Rel
ay
K
1
Inpu
t F
ilter
L1,C
3,C
4
Sm
ooth
ing
Circ
uit
Q
1C
R2
Inpu
tvo
ltage
Sel
ecto
r
Shi
p's
Mai
ns10
0/11
0/11
522
0/23
0 V
AC
Pow
erS
witc
h
+12
VR
egul
ator
Q
21
Ove
r -a
nd
low
- Vol
tage
P
rote
ctor
U1
Rel
ayD
river
Q
26 Vol
tage
P
rote
ctor
Latc
h
Q
24
Sw
itchi
ngR
egul
ator
Con
trol
ler
U
31
Driv
er
Q11
,12
P.F.
Sig
.G
ener
ator
Q81
,U33
Vol
tage
Det
ecto
r
U51
Vol
tage
P
rote
ctor
Latc
h
Q
36
Mai
n-in
vert
er
+32
V
CR
52
+24
V
CR
51
Cho
pper
Con
trol
U
92
Cho
pper
CR
94,Q
97
Com
para
tor
Q
94
F/V
Con
vert
er
U93
Sof
t Sta
rtC
ontr
ol O
verc
urre
ntD
etec
tor
U
91
Cho
pper
C
hopp
erC
ontr
ol Driv
er
Q71
,72
Sho
rt-c
ircui
tP
rote
ctor
U
72
Sw
itchi
ng R
egul
ator
Con
trol
ler
U
71
T71
Sub
-inve
rter
Hig
h V
olta
ge S
ig.
Low
Vol
tage
Sig
.
5A
NT.
SP
EE
DM
enu-
Sel
ectio
nH
ight
Spe
ed :
H
J103
7A
NT.
ON
/OF
FT
X :
HS
T-B
Y :
L
J103
1,2
3,4
MO
TOR
(+)
MO
TOR
(-)
J103
J105
10P.
FJ1
05
VR
1(M
ain-
inve
rter
fr
eq a
djus
tor)
VR
51(+
24 V
adj
usto
r) VR
71(S
ub-in
vert
er fr
eq a
djus
tor)
CR
81~
86
VR
91(2
4 rp
m a
djus
tor)
U61
,CR
61
ON
: +
12 V
ON
: +
12 V
110
or 2
20 V
AC
H o
r L
Ove
rcur
rent
Det
ecto
r
U81
+24
V1
J107
2-31
2.3 Scanner Unit
GeneralNew cast aluminum scanner gearbox and new series of streamlined antenna are employed on theFR-2115 and FR-2125 radars. These are not compatible with the traditional Furuno scannergearbox and radiator used for a long period. The mounting dimensions are remained unchanged.
Radiator
A feeder waveguide is built-in the radiator XN-12 AF, XN-20 AF and XN-24 AF for ease-installation. The XN-20 AF and XN-24 AF are the same electrical characteristic with XN-3 Aand XN-4 A respectively.
Gear Box
The mounting dimensions, the size of the gear box, and cabling layout have not been changedfrom the traditional Furuno radars. Changed is the radiator mounting bracket for a new radiator.The gear box can be equipped with a motor of either 24 rpm or 42 rpm type.
RF Unit
The 10 kW and 25 kW RF units are the same in size. The magnetron of 25 kW is a new type,smaller in size. The RF modulator generates short pulse 1 (S1) which has pulselength of 0.07 usand pulse repetition rate of 3000 Hz. Traditionally, the S1 is 0.08 us and 2200 Hz.
The magnetron current monitor circuit ensures a defective magnetron being found easily. Whenthe magnetron is short- or open-circuited, the magnetron current detector reads 1 to 1.5 V.
2-32
+5 V Regulator
U609
TP602
Comparator
U9
Trigger1-4
TX OFFTX PROTECT Relay
K1
Regulator
U1
Driver
Q5 Q20
on by S1for reducing MB.
on by S1for PWR up
Buffer
U10
FETQ1 Q4
VTRIG
B.W. Selector
U604TP604
Gate PulseGenerator
U611
TP605 (+7 V)TP606 (-9 V)TP607 (+9 V)
TP608
MBS
Q603, U612
MIC
Motor
B801
U801
Magnetron
V801
Driver
Q1 Q12
TX PulseGenerator
U4(PLD)
Regulator
U7, Q5
BW
Radiator
Circulator
RXTX
HY801
DiodeLimiterCR880 Waveform
Reshaper,Amp.
BEARINGSIG. GEN. BoardMP-3795
MagnetU902
Switching
Q901, Q902
Photo-InterrupterTimingDisk
U901
Reed SwS801
CascadeAmplifier
Q601-Q602
B.W. Adjustor(Long ranges)
T603, T604
Log Amp.U602, U610,U601
Buffer Amp.
Q627, Q628
Amp.Mixer
Q625, Q626
Log Amp.
U603
Tuning Circuit
Q614, Q615
Q609, Q610TP603
TP601 (output of U601)
HD FL
SYNC P
IF
TX-TRIG
(H)(12 Vdc)
Heater VoltageCheck
IFoutput
Tuning Indicator(TUNING IND.)
R. MONI.
Heading
Bearing
Magnetron
Trigger1-4
Variable
MODULATOR Board : 03P9244 A(10 kW) 03P9244 B(25 kW)
TRIGGER Board : 03P9243 A(10 kW)
03P9243 B(25 kW)
IF Amp. Board 03P9232
Buffer Amp.
Q619, Q620
+12 V
TUNING CONT.
MBS L
P/L A,B,C
+12 V
VR1( )
S1 pulse
14 19 V
M1/M2
VR1
Magnetron
*25 kW: 7.4 8.1 Vdc(L) 10 kW: 4.6 5.3 Vdc(L)
11% of accuracy
TX-HV330 V(10 kW), 530 V(25 kW)
T80110 kW : RT-902525 kW : RT-9023
(Short ranges)
MBS T
MBS SIG.
Block Diagram of Scanner Unit
FR2115-SME-27A
24 rpm(D8G-516)42 rpm(D8G-571)
RU-9253or
RU-9371
10 kW : MG524125 kW : MG5436
OSCU5
48 MHz
Signal is generated when 530 V is supplied to 10 kW RF unit.
P/L
25 kW: 8.2 8.4 Vdc(S1)10 kW: 7.4 7.6 Vdc(S1)(6.3 Vdc supplied to magnetron, voltage drop by pulse trans.)
4.5 5Vpp
A
HLLHH
LS1S2M1M2M3L
LLLHHH
LLHLLH
B C
CascadeAmplifier
C B A
3-1
Hazardous Voltage
This equipment uses high voltage electricity which can SHOCK, BURNor cause DEATH.
Always make sure the electrical power is turned off before attempting tochange a component or inspecting the inside of the equipment. Aresidual charge may exist in capacitors, even with the equipment turnedoff. Always short all supply lines to the chassis with an insulatedscrewdriver or a similar tool before touching the circuit.
Working on the Scanner Unit Mast
Work on the scanner unit mast is dangerous, and doubly so if the properprecautions are not taken.
1. Post an appropriate warning sign near the display unit to indicate thatwork on the scanner unit is being performed, to prevent accidentalapplication of the power to the scanner unit.
2. Wear a safety helmet and always be aware of where the scannerradiator is.
Chapter 3. ADJUSTMENT
3-2
3.1 Adjustment (Display Unit)
Location of Major parts
Figure 3.1 Display Unit, front view
Figure 3.2 Display Unit, inside view
Control panel
Handle
Stay
This cover is removedto gain access to SPU,ARP, and RP Boards.
Display pedestal
3-3
Figure 3.3 Display pedestal, cover removed
Figure 3.4 Display pedestal, W/O GYRO CON Board
SPU Board(03P9253)
ARP Board(18P9002B)
RP Board(14P0298)
TX-HV Board(HV-9017)
GC-8 Board(64P1106)
DTB-2 (T.B.)
Mother Board(03P9251)
INT Board(03P9252)
TX HV Fuse(F3 : 0.5 A)
SPU BoardVideo LevelAdjuster :R140
Fuse for P.M.(F402 : 0.5 A)
Fuse for P.M.(F401 : 0.5 A)
PM optionalBoard(03P9225)
RF VideoLeveladjustor :R21
ExternalVideo Leveladjustor :R134
3-4
Figure 3.5 Display Unit, top view, drawing forward
Figure 3.6 Display pedestal, for side, shield cover removed
PTU Board(AC : 03P9245, DC : 03P9246)Shield cover removed
Power Switch forMaintenance
Fuse (F1)
Fuse (F2)
3-5
Figure 3.7 Display Unit, top view, cover removed
Adjustment of CRTThe CRT is adjusted by pressing the buttons on the CRT ADJ Board. The buttons locate asshown in the figure below. The LED D701 lights normally.
Figure 3.8 Adjusters on the CRT ADJ Board
MENU button: turns on/off the menu.INPUT button: selects Input 1 or Input 2 (not used).SEL+/SEL- buttons: selects items (+: moves cursor right or downward, -: moves cursor left or upward)ADJ+/ADJ- buttons: expands (+) or shrinks (-) the screen.
1) Brightness and Contrast
SCREEN FOCUSIF3-A10 Board(UBH188)
VIDEO Board(PBH173)
SOCKET Board(UBH182)
DEGAUSS Board(PDM9025)
INT BoardPBH183-0
HPOSIUnder the cover
MAIN Board(PBH172-0)
CRT ADJ Board(PBH132-1)
HV ADJ
3-6
2) Display Size
Press the MENU button on the CRT ADJ Board, PBH132-1 and the following menu willappear on the screen.
1) Set the radar to TX.
2) Select the background color to blue : [RADAR MENU] [0] [2].
3) Check items 1) to 5) right for rating.
4) Adjust the CRT, if necessary.
How to change meun setting to default.
Keep pressing the MENU button until UTILITY MOD menu appears.
Press SEL+ once to select "INITIALIZE".
Press MENU.
Within 5 seconds after the message INITIALIZE MODE CAUTION REPLACE FACTORY SETTING appears, press ADJ+.
FR2115-SME-62
1) Radar display area must be 280 3 mm.
2) Display area must be centered.3) Heading Line must be 0 1 .
4) Pincushion must be within 3 mm.
5) D701 must be on.
1.0
3 mm
Steps Ratings
280 mm 3 mm
3-7
Location of parts on SPU ����03P9253����Board
Test points and Ratings
TP No. Signal Rating Condition
TP1 GND
TP2 GND
TP3 TUNE IND Approx. 1 to 3.2 VDC
TP4 RF VIDEO 3.9 to 4.1 Vpp
TP5 TX TRIG
TP6 SAMPL T
4 V to 12 V, positive, approx. 3.5 to 15 usS1: 3005 to 3976 Hz, S2: 2790 to 3505 HzM1: 1502 to 1602 Hz, M2: 976 to 1041 HzM3: 976 to 1041 Hz, L: 583 to 621 Hz
TX
(except for maximumrange)
TP7 H SYNC Approx. 64 kHz
TP8 V SYNC Approx. 60 Hz
TP9 TUNE V Approx. 2 V to 32 V TX
TP11 VIDEO Approx. 5 V TX
TP12 VIDEO LEVEL 3.9 to 4.1 Vpp, negative, main bang levelAdjusted by R140
Range: 12 nmIR: OFFSTC: fully ccwFTC: fully ccw
TP13 STC CURVE 4 us: 0.8 to 1.1 V, 10 us: 1.3 to 1.6 V20 us: 1.9 to 2.3 V, 40 us: 2.7 to 3.0 V60 us: 3.3 to 3.7 V, 90 us: 4.1 to 4.5 V120 us: 4.3 to 4.7 V
Ant. Height: 10 mRange: 12 nmGain: fully cwSTC: fully cw
TP1 CR8 CR7 CR6 CR5 CR4 CR3 CR2 CR1
TP11
TP13
TP12
TP5
TP6
TP9
TP8 TP7 R140 TP4 TP3 TP2
3-8
Location of Parts on ARP ����18P9002����Board
Test points and Ratings
TP Signal Rating Condition
TP1 GND
TP2 VIDEO Approx. 5 Vpp (main bang level)
TP3 GND
TP4 BP INPUT Approx. 10 to 12 V
TP5 VIDEO INPUT Approx. 4 Vpp
TP6 OFFSET (-)
TP7 OFFSET (+)
0.09 to 0.13 VDC, adjusted by R104
TX
TP8 GND
TP9 QV OUTPUT Approx. 4 V(main bang level)
TP10 +5 V 4.8 to 5.2 V
TP11 -12 V -11.0 to -13.0 V
TP12 +12 V 12.1 to 13.5 V
R103 CR14 CR13 CR16 CR15 CR12 CR11 CR10 CR9 CR17 CR1
TP1
S1
ROM (U3)
TP12 TP10 TP4 TP3 TP2 ROM (U40)
R104
TP7
TP6
TP8
ROM(U64)
JP11
TP9
TP11
3-9
Location of Parts on RP ����14P0298����Board
CR1 S1
Battery(BT1)
Flash ROM(U3)
3-10
Location of Parts INT Board ����03P9252����
Test points and Ratings
TP No. Signal Rating Condition
TP1 VIDEO(RF Input)
Approx. 4 Vpp, main bang level TX
TP2 GND
TP3 VIDEO(EXT Input)
Approx. 1 to 3.2 VDC
TP4 ANALOG (Input) Same as output of connected equipment
TP5 GND
TP6 VIDEO (Output) 3.9 to 4.1 Vpp, main bang level
RF video output adjusted by R21EXT video output adjusted by R134
Selected thru menu
TP6
R21
J450
J445
TP2J454
J448J469J455
J446
J468
J466
J467
J462
J445
J456
J465
TP1
J457
J442
J458
J443
TP3
J453
J444
J451
J463
J471
R151 R153 TP4 J452 TP5 R134
3-11
Location of Parts on GYRO Board ����64P1106����
Test points and Ratings
TP No. Signal Rating Condition
TP1 +5 V 5.19 to 5.21 VDC, adjusted by R42
JP1
F1
F2
F3
F4
CR21
JP7
JP3
JP5
JP2
JP4
R42
CR22
TP1
JP8
BT1
3-12
Location of Parts on PTU Board, for DC set ����03P9246����
Test points and Ratings
TP No. Signal Rating Condition
J104
# 1(+) & # 3(-)
+140 V 138 to 142 VDC, adjusted by VR51
J105
# 1(+) & # 7(-)
+32 V 27.0 to 35.0 VDC TX
J105
# 2(+) & # 7(-)
+12 V 12.1 to 13.5 VDC
J105
# 4(+) & # 7(-)
+5 V 4.8 to 5.2 VDC
J105
# 9(+) & # 7(-)
-12 V -11.0 to -13.0 VDC
TP3 or TP4
& Chassis
Inverterfreq., U31
42.75 to 47.25 kHz, adjusted by VR1
TP1 or TP2
& Chassis
Inverterfreq., U71
42.75 to 47.25 kHz, adjusted by VR71
J103
# 1(+) & # 3(-)
MOTOR (+)and (-)
Approx.24 rpm
If less than 24 rpm, turn VR91 cw.If more than 24 rpm, turn VR91 ccw.
No adjuster for 42 rpm
Test display showsantenna speed.
JP91
JP92
J105
VR1
VR51
J104
J103
VR91 VR71 CR12 CR11
TP2
TP1
TP4
TP3
3-13
Location of Parts on PTU Board, for AC set ����03P9245����
Test points and Ratings
TP No. Signal Rating Condition
J104
# 1(+) & # 3(-)
+140 V 138 to 142 VDC, adjusted by VR51
J105
# 1(+) & # 7(-)
+32 V 27.0 to 35.0 VDC TX
J105
# 2(+) & # 7(-)
+12 V 12.1 to 13.5 VDC
J105
# 4(+) & # 7(-)
+5 V 4.8 to 5.2 VDC
J105
# 9(+) & # 7(-)
-12 V -11.0 to -13.0 VDC
Q31 Collector& Chassis
Inverterfreq., U31
42.75 to 47.25 kHz, adjusted by VR1
FL71&Chassis
Inverterfreq., U71
42.75 to 47.25 kHz, adjusted by VR71
J103
# 1(+) & # 3(-)
MOTOR(+)
And (-)
Approx. 24 rpm
If less than 24 rpm, turn VR91 cw.If more than 24 rpm, turn VR91 ccw.
No adjuster for 42 rpm
Test display showsantenna speed.
JP91
VR91
JP92
J105
VR1
VR51
J104
VR71
J103
CR12 CR11 JP3 JP2
JP1
3-14
Location of Parts on HV-9017 Board
Test points and Ratings
TP No. Signal Rating Condition
TP1 34.7 to 35.3 VDC, adjusted by VR1 TP1 and TP2
TP2 0 V line
TP3 Sub inverterswitching freq.
42.75 to 47.25 kHz TP3 and TP2
TP4 Main inverterSwitching freq.
42.75 to 47.25 kHz TP4 and TP2
J482 #1 &Chassis
TX HV 10 kW: 310 to 350 V25 kW: 520 to 580 V
TX HV alsomeasurableat TB2 #1 in displaypedestal
JP1
J482
CR21,RED
CR23, GRN
VR1
TP1 TP2 TP3 TP4
J481 JP2
3-15
3.2 Adjustment (Scanner Unit)
Figure 3.9 Scanner Unit, side view (XN-20AF�
Figure 3.10 Antenna radiator, bottom view (XN-20AF)
Figure 3.11 Scanner Unit, top view. Antenna radiator removed
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3-16
Figure 3.12 Scanner Unit, stern side, cover removed
Figure 3.13 Scanner Unit, stern side, cover and RF module removed
Figure 3.14 Scanner Unit, fore side, cover removed
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3-17
FR-2125����RTR-063����
Figure 3.15 RF module, top view
Figure 3.16 RF module, bottom view
RFC Board(03P9243B)
VR1 on MODULATORBoard (03P9244B) formagnetron currentadjustment
Circulator(RC-3686)
MIC(RU-9253/9371)
IF Amp Board(03P9232)
Magnetron(MG5436)
MODULATORBoard(03P9244B)
PulseTransformer(RT-9023)
3-18
Location of Parts on IF AMP ����03P9232����Board
Test points and Ratings
TP No. Signal Rating Condition
TP601 Output of U601 Factory-use
TP602 Output of U603 Factory-use
TP603 TUNING IND. 1.5 to 3.5 VDC
TX
TP604 MBS 2.2 to 2.4 V, positive, 0.07 to 0.55 us TX (Varies accordingto MBS T and MBS Lsettings)
TP605 +7 V +5.7 to +6.7 VDC
TP606 -9 V -8.7 to -9.3 VDC
TP607 +9 V +8.7 to +9.3 VDC
ST-BY
TP608 Output of U611 Factory-use
J611 # 3& Chassis
TUNING IND. 1.5 to 3.5 VDC TX, long range,Maximum tuningindication
J611 # 2(+)
& # 10(-)
R.MONIT 1.5 to 3.5 VDC ST-BY, short range
VIDEO Output of U602 White noise level, factory-adjusted withVR601
TX
(Field-adjustmentprohibited!!)
VR601 TP606
TP607 TP605 TP603 TP608 TP602
TP604
3-19
Location of Parts RFC ����03P9243B����Board
Test points and Ratings
TP No. Signal Rating Condition
J801 # 12(+)& # 11(-)
MAG HEATER. 8.2 to 8.4 VDC(S1) , adjusted by VR16.5 to 7.5 VDC(L)
ST-BY
TX
VR1
3-20
Location of Parts on MODULATOR ����03P9244B����Board
Test points and Ratings
TP No. Signal Rating Condition
03P9243,J801 # 13(+)& Chassis
MAG CUR. Less than 0.15 V(ST-BY)7.4 to 8.1 VDC(Long range, TX),adjusted by VR1
CAUTION: If the magnetron current is not set to within the rating, the magnetron will be damaged.
Q4 Q3 Q2 Q1
VR1
3-21
FR-2115����RTR-062����
Figure 3.17 RF module, top view
Figure 3.18 RF module, bottom view
Circulator(RC-3686)
MIC(RU-9253/9371)
IF Amp Board(03P9232)
RFC Board(03P9243A)
VR1 on MODULATORBoard (03P9244A) formagnetron currentadjustment
Magnetron(MG5241)
MODULATORBoard(03P9244A)
PulseTransformer(RT-9025)
3-22
Location of Parts on IF AMP ����03P9232����Board
Test points and Ratings
TP No. Signal Rating Condition
TP601 Output of U601 Factory-use
TP602 Output of U603 Factory-use
TP603 TUNING IND. 1.5 to 3.5 VDC
TX
TP604 MBS 2.2 to 2.4 V, positive, 0.07 to 0.55 us TX
(Varies according toMBS T and MBS Lsettings)
TP605 +7 V +5.7 to +6.7 VDC
TP606 -9 V -8.7 to -9.3 VDC
TP607 +9 V +8.7 to +9.3 VDC
ST-BY
TP608 Output of U611 Factory-use
J611 # 3
& Chassis
TUNING IND. 1.5 to 3.5 VDC TX, long range,Maximum tuningindication
J611 # 2(+)
& # 10(-)
R.MONIT 1.5 to 3.5 VDC ST-BY, short range
VIDEO Output of U602 White noise level, factory-adjusted withVR601
TX
(Field-adjustmentprohibited!!)
VR601 TP606
TP604
TP607 TP605 TP603 TP608 TP602
3-23
Location of Parts on RFC ����03P9243A����Board
Test points and Ratings
TP No. Signal Rating Condition
J801 # 12(+)& # 11(-)
MAG HEATER. 7.4 to 7.6 VDC(S1), adjusted by VR1 ST-BY
VR1
3-24
Location of Parts on MODULATOR ����03P9244A����Board
Test points and Ratings
TP No. Signal Rating Condition
03P9243
J801 # 13
& Chassis
MAG CUR. Less than 0.15 V(ST-BY),
4.6 to 5.3 VDC(Long range, TX),
adjusted by VR1
CAUTION: If the magnetron current is not set to within the rating, the magnetron will be damaged.
Q4 Q3 Q2 Q1
VR1
4-1
Hazardous Voltage
This equipment uses high voltage electricity which can SHOCK, BURN orcause DEATH.
Always make sure the electrical power is turned off before attempting tochange a component or inspecting the inside of the equipment. Aresidual charge may exist in capacitors, even with the equipment turnedoff. Always short all supply lines to the chassis with an insulatedscrewdriver or a similar tool before touching the circuit.
Working on the Scanner Unit Mast
Work on the scanner unit mast is dangerous, and doubly so if the properprecautions are not taken.
1. Post an appropriate warning sign near the display unit to indicate thatwork on the scanner unit is being performed, to prevent accidentalapplication of the power to the scanner unit.
2. Wear a safety helmet and always be aware of where the scannerradiator is.
Chapter 4. MAINTENACE
4-2
4.1 DIP Switches DIP switch S1 on the ARP Board (18P9002) and RP Board (14P0298) changes the specifications of radars.
Figure 4.1 Display pedestal, inside view
S1 Description Default
#1 Memory clear OFF #2 Not used OFF #3 Not used OFF #4 Not used OFF
S1 Description Default
#1
Baud rate of ARPA output data OFF:4800 bps, ON:9600 bps
OFF
#2 Tracking model OFF:A TRK 88* ON:A TRK 94
OFF
#3 Not used OFF
#4 EEPROM memory clear at power-on
OFF
*1 A TRK94 has faster tracking speed than A TRK88, but result in unsteady vector and track.
14P0298 Board
18P9002 Board
S1
ON
OFF
#4 #1
14P0298(RP)
S1
ON
OFF
#4 #1
18P9002B(ARP)
4-3
4.2 Jumper Settings
Board Specification Jumper Settings Remarks
03P9245A
(PTU Board, AC)
100 VAC, 24 rpm JP1: Yes
JP2: Yes
JP3: Yes
JP4: No
JP91: No
JP92: No
R98:4.7 k ohms
03P9245C
(PTU Board, AC)
100 VAC, 42 rpm JP1: Yes
JP2: Yes
JP3: Yes
JP4: No
JP91: No
JP92: Yes
R98: 1.2 k ohms
03P9245D
(PTU Board, AC)
220 VAC, 24 rpm JP1: No
JP2: No
JP3: No
JP4: Yes
JP91: No
JP92: No
R98:4.7 k ohms
03P9245F
(PTU Board, AC)
220 VAC, 42 rpm JP1: No
JP2: No
JP3: No
JP4: Yes
JP91: No
JP92: Yes
R98: 1.2 k ohms
03P9246A
(PTU Board, DC)
24 VDC, 24 rpm JP91: No
JP92: No
R98: 4.7 k ohms
03P9246C
(PTU Board, DC)
24 VDC, 42 rpm JP91: No
JP92: Yes
R98: 1.2 k ohms
HV-9017A 10 kW (FR-2115) JP1: 300 V
JP2: 330 V
HV-9017B 25 kW (FR-2125) JP1: 500 V
JP2: 330 V
INS RX (C) fromat J468: J1-J2
INS RX (H) fromat J469: J1-J2
J1-J2: Current loop
J3-J4: RS-422
03P9252
(INT Board)
ANALOG input level J471: J1-J2 J1-J2:L, J3-J4:M, J5-J6:H
Battery connection JP1: Yes03P9253
(RP Board) not used JP2: No
4-4
4.3 LED Status
LED status symbols: �: OFF ; �: Blinking ; �: ON
Board LED No. NormalStatus
CheckItem Remarks Location of LEDs
CR1 (YLW) � KEY TXCR2 (YLW) � NAV TX Blinks every 3 seconds.CR3 (YLW) � RJ7 TX Blinks when RJ-7 is connected.CR4 (YLW) � INS TX Not usedCR5 (YLW) � KEY RX Lights momentary when key is
pressed.CR6 (YLW) � NAV RX Blinks when receiving nav
data.CR7 (YLW) � RJ7 RX Blinks when RJ-7 is connected.
SPUBoard(03P9253)
CR8 (YLW) � INS RX Blinks when receiving navdata.
CR5 CR1CR2CR3CR4
CR6CR7
FR2115-SME-25A
CR8
RPBoard(14P0298)
CR1 (YLW) � CPU CLK Blinks every second.CR1
FR2115-SME-25B
CR1 (YLW) � CPU CLK Blinks at irregular intervalCR9 (RED) � HDG
alarmLights if heading data is notreceived for more than 10 sec.
CR10 (RED) � BPalarm
Lights if bearing data is notreceived for more than 10 sec.
CR11 (RED) � Videoalarm
Lights if video data is notreceived for more than 60 sec.
CR12 (RED) � TRIGalarm
Lights if trigger is not receivedmore than 10 sec.
CR13 (YLW) � or � TRIGfreq.
Lights if trigger PRR is lessthan 1250 Hz (S2).
CR14 (YLW) � TRIGfreq.
Not used
CR15 (RED) � Gyroalarm
Lights if gyro data is notreceived for more than 10 sec.
CR16 (RED) � Log alarm Lights if log data is not receivedmore than 60 sec.
CR17 (YLW) � DSP CLK Blinks every 2 seconds
ARPBoard,AC(18P9002)
CR32 (YLW) � or � FE echodata
Lights when echo data isreceived.
CR15 CR9CR10CR11CR12
CR1
CR16CR32
CR17
CR13CR14
FR2115-SME-24A
CR11 (RED) � Over-volt. Lights when ship’s mainsexceeds the rating.
PTUBoard,AC(03P9245)
CR12 (RED) � Over-cur. Lights if over-current isdetected.
CR11
FR2115-SME-25C
CR12
CR11 (RED) � Over-volt.PTUBoard,DC(03P9246) CR12 (RED) � Over-cur.
Same as above
4-5
LED status symbols: �: OFF ; �: Blinking ; �: ON
Board LED No. NormalStatus
CheckItem Remarks Location of LEDs
CR21 (RED) � Over-cur.TX-HVBoard(HV-9017) CR23 (GRN) � -12 V
Lights when over-current isdetected.OFF when the line is abnormal.
CR21
FR2115-SME-25D
CR23
CR21 (GRN) � CPUMonitor
GYROBoard(64P1106)
CR22 (GRN) � +5 V
Goes off or on if output isabnormal.
OFF when the line is abnormal.
CR21
FR2115-SME-25E
CR22
4-6
4.4 Self-test
Test MenuPress [RADAR MENU], [0], [0], [0], [3], and [ENTER] in this order, and the self-test resultdisplay will appear after several seconds. Figure 4.2 shows the self-test result display. If anyerror has been found in circuitry, NG appears instead of OK. The self-test is carried out at everypower-up, not when the keys are pressed. If the self-test detects an error, the message SYSTEMFAIL appears at the lower right of the screen.
Figure 4.2 Self-test Result Display
FR-2105 TEST
PROGRAM NO ROM RAM CRAM DIPSWMAIN 0359149101 OK OK 1234
ARP 1859038104 OK OK OK 0000DSP 1859039101 OK OK OKRP 0359150101 OK OK OK 0000
DRAM OKRP BOARD BAT OKRP CARD 1 OK CARD 2 OK CARD 1 BAT OK CARD2 BAT OK
ANTENNA SPEED 0.0RPMTRIG FREQ 0HzMAG CURRENT 4.9VR. MONITOR 1.8VTUNE IND 2.5V
ROM Test RAM Test CRAM Test
Radar system program number (MAIN board)
ARP program number (ARP board)
RP program number (RP board)
EBL test
Test for PM and Degauss switches
Key and knob test(BRILLIANCE, A/C RAIN, A/C SEA, and GAIN knobs are not tested.)
Trackball test
251008
002123
VRM test
FR2115-SME-45
CH1 $GPGLL,3445.000, N, 13521.000,E <CR> <LF>
IEC61162 signal input to J450 is monitored.
DIP switch setting, S1 on ARP board (#1 to #4 from left)0 : on, 1 : off
DIP switch setting, S1 on RP board0 : on, 1 : off
4-7
The ICs checked in the diagnostic test are shown in the table below. For�NG,�suspect faulty IC.
Note that parts level replacement is not possible; replace at board level.
Check Item ROM RAM CRAM DRAM Board to be checked
MAIN U11 U5, U7� �
03P9253
ARP U3 U9, U10 U4, U11�
DSP U40 U33, U36,U38, U39
U21, U22�
18P9002
RP U3 U8, U9 U4 U2 14P0298
Check Item Parts to be checked Remarks
RP BOARD BT Battery BT1 on 14P0298 Replace 14P0298.
RP CARD 1 Card or pcb related to upper card slot
CARD 2 Card or pcb related to lower card slot
Replace 14P0299 (CARD I/F) or14P0298 (RP).
CARD 1 BAT Card or its battery in upper card slot
CARD 2 BAT Card or its battery in lower card slot
Replace memory card.
ANTENNASPEED
Refer to P2-14 Replace motor or related pcb.
TRIG FREQ Replace 03P9253.
Description of the self-test result display
1) When the ARP and RP boards are not installed, related lines are shown by Xs.
2) RAM card will be NG if the card is inserted after power-up.
3) RP BOARD BAT: Checks the voltage of the battery on the RP board. NG will appear when the battery drops to less than 2.65 V. The capacity of a new battery is about 3.6 V.
4) CARD1 BAT/CARD 2 BAT: The capacity of the battery inside the card is checked.
5) ANTENNA SPEED: Set the radar to TX. 0 (zero) is indicated in STBY mode.
6) TRIG FREQ: Set the radar to TX and stop the antenna rotation.
7) MAG CURRENT*: Reference only. The value is not actual magnetron current. If the radar is normal, the value increases when the radar is set from STBY to TX.
8) R. MONITOR* Reference only. This checks regulated +5 V for MIC. If 0 V, it is abnormal.
9) TUNE IND*: Reference only. If the radar is normal, the value increases when the radar is set from STBY to TX. The defective magnetron or MIC is expected if the value is low at TX.
10) *: Service call with these readings may help the technician to prepare necessary spare parts.
Keyboard TestPressing a key highlights the corresponding location on the display screen.The STBY TX key is pressed in the end.
4-8
EBL/VRM/Trackball TestPressing the key and rotating the trackball increases or decreases the number on the screen.
Test PatternPressing the STBY TX key calls up the test pattern composed of circles, squares, and diagonallines.
4.5 Notice on Replacing Major Parts
MAGNETRONNOTE) The magnetron emits a strong magnetic field. For this season, remove awrist watch before performing the replacement and use a non-magneticscrewdriver to dismount the magnetron.
The estimated life of the magnetron is 2000 hours, (including time in stand-by), however actuallife depends on usage.
1. Turn off the power.
2. Dismount the transceiver module.
3. Dismount and replace the magnetron.
4. When a new magnetron is fitted, turn on the power and measure magnetron current. SeeChapter 3 for heater voltage rating, and potentiometer to be adjusted.
5. Allow at least 30 minutes under ST-BY for pre-heating.
6. Transmit on a long range and measure magnetron current. Readjust magnetron current ifnecessary.
7. Allow at least 30 minutes under TX for frequency stabilization.
8. Tune the radar : Press [RADAR MENU] [0] [0] [2] [0] [0] [0] [0] and [ENT].
9. Reset�TX Hours�and�On Hours�on the INSTALLATION SETUP menu.
MICThe MIC can be replaced individually. However, the replacement should be made inside theroom where no radar signal is received. The Tune Initialization must be made after thereplacement.
SPU BoardSettings of the MAIN and INSTALLATION menus are stored onto EEPROM U10 on the SPUBoard.
Remove the U10 on a old board and replace it with one on the new board. The TuneInitialization must be made after the replacement.
4-9
4.6 Program Numbers1) The following summarizes the programs used in the system. The radar and RP programs are
stored on the flash ROM, and the ARP program on the PROM.
2) How to switch between English and Japanese Versions
The following key operation can change the English menu to the Japanese one, and viceversa.
(1) Turn on the unit.
(2) While pressing and holding down the HL OFF [1] key, press the PANEL BRILL [2] key,the MODE [3] key, and the OFF CENTER [4] key in this order.
(3) And then, turn off the unit.
Board Program Number Method of Updating Remarks
SPU Board (03P9253) 0359149101 Loading program with apersonal computer
RP Board (03P0298) 0359150101 Loading from programmaster card
ARP Board (18P9002) ARP : 18590381XX
DSP : 18590391XX
Changing PROM.
4.7 How to update system program
Radar System ProgramThe radar system program, stored onto the flash ROM U11 on the SPU board, is replaced byfollowing procedure.
ConnectionThe series port of a personal computer (PC) is connected to the J456 on the INT board inside theradar.
Procedure1. Open the program file, and click the up.bat file.
The message “TARGET POWER ON” appears.2. Turn on the radar.
“Now Erasing” and then, “xxx percent completed” appears on the PC screen. Nothing appearson the radar screen. The program update is terminated with the message “Finish Version up. ”
4-10
3. Disconnect the interconnection cable.4. Turn off the radar and turn on again. Confirm the program revision level.
RP ProgramThe program is stored onto the flash ROM, U3 on the RP board.
1. Insert the program card into the upper card slot.
2. Turn on the radar.
3. The radar is programmed with new version after about 15 seconds while the count-downscreen is displayed on the screen. The CR1 on the RP board lights.
4. Turn off the radar and turn on again. Confirm the program revision level.
ARP ProgramThe program is stored onto the PROMs, U3 and U40 on the ARP board. The ROM is replaced toupdate the program.
4-11
4.8 Alternation of Power SupplyThe following tabulates the necessary parts to be changed when the radar is modified from ACspecification to DC specification and vice versa.
From AC to DC
Parts Name Type Code No. Remarks
RPU-011-DC (24 rpm) 008-487-440 03P9246PTU Board (DC)
RPU-011-DC (42 rpm) 008-493-700 03P9246
Filter Assembly RDP-124*DC* 008-492-460 03P9226, fuse, etc.
From DC to AC
Parts Name Type Code No. Remarks
RPU-011-60R2 (24 rpm) 008-487-430 115 VAC, 03P9245
RPU-011-60R4 (42 rpm) 008-487-890 115 VAC, 03P9245
RPU-011-72R2 (24 rpm) 008-487-900 220 VAC, 03P9245
PTU Board (AC)
RPU-011-72R4 (42 rpm) 008-487-920 220 VAC, 03P9245
RPU-011-AC*100/115 V* 008-487-470 Fuse : 10 ANF Chassis Assy.
(Noise Filter) RPU-011-AC*220 V* 008-487-480 Fuse : 5 A
Figure 4.3 Display Unit, top view, drawn forward
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5-1
5.1 OutlineThis chapter provides troubleshooting flow charts and describes error messages.
5.2 Error MessageWhen no bearing pulse signal is input to the display unit, BP-SIG-MISS is indicated, and when noheading signal, HD-SIG-MISS. Check the antenna cable when those indications appear.
Visual AlarmsVisual alarms appear on the display to alert the operator that the system is abnormal. The name andmeaning of each visual alarm is tabulated below.
Alarm Type Visual Alarm Description
LOST No echo received from an acquired target for nineconsecutive sweeps. The target mark blinks.
TARGET FULL(AUTO+MANU)
Relevant target memory becomes full.
ARPA alarm
GUARD Target transits the operator-set guard ring.
HEAD LINE No heading pulse to the SPU board
AZIMUTH No bearing pulse to the SPU board.
TRIGGER No trigger pulse to the SPU board
VIDEO No video signal to the SPU board
LOG No log signal contact closure to SPU board for oneminute
GYRO No gyro signal AD format to SPU board for one minute
Input signal
(SIGNALMISSING)
EPFS No L/L data from Electronic Position Fixing System tothe SPU board
5.3 Troubleshooting Flow ChartsThe troubleshooting flow charts help the service technician to diagnose a problem. To use the flow charts,first find symptom and its flow chart number in the flow chart on the next page. Then, follow appropriateflow chart to troubleshoot.
Chapter 5. TROUBLESHOOTING
5-2
General Flow Charts
5-3
Symptom: Nothing appears on the display
Keys beep whenpressed.
No (No power)
Yes (Equipment is powered)
CRT heater lights?NG
FR2115-SME-75
Flow chart 1
Results ofmeasurement.
NG
OK
OK
Check horizontal sync,vertical sync and videooutput (MOTHER pcb,03P9251,J418 #1,2,3,13,14)
Faulty CRT assy.(Type : CDT2136B)
Defective 03P9253 (SPU)
Faulty CRT assy.(Type : CDT2163B) ADefective 140 Vcc line
*See block diagram of SPU board.
Confirm that maintenance SW is on.
OK?NG(set to front side)
Rating?
OK(set to rear side)
Check input voltage at DTB-1.
Turn on w/ mainte. sw on.
OK
NG
NG
OK
Disconnect DJ-1.NG
OK
Defective pcbinside RF unit
Defective PTU Board
Fauty power cable,power connector,ship's mains.
CR12 on PTUlights?
No
Defective SPU
Yes
Wrong switch settingCheck fuses.(F1 and F2)
OK? NG
OK
Replace fuse
OK
Blown fuse
NG
Defective pcb inside display unit
+5V,+12V fromPTU are normal?
Defective PTU Board
NG
OK
*Maintenance switch is provided only on AC sets.
*For DC sets F1 only.
5-4
Symptom: Abnormal display
FR2115-SME-74
Flow chart 2
OK ?
Check horizontal sync,vertical sync and videooutput (MOTHER Pcb,03P9251,J418 #1,2,3,13,14)
CRT brilliance ?NG
OK
OK
OK
Picture is in sync ?NG
Focus ?
Picture size?
End
*See block diagram of SPU board.
Defective 03P9255 (SPU)
Picture is synchronizedautomatically.(No adjuster)
NG
OK ?
NG Adjust CRT focus.
OK ?
OK ?
Adjust BRIL control.
Faulty CRT assy.(Type : CDT2136B)
OK
NG
NG
Adjust BRIL onCRT ADJ pcb.
NG
Adjust picture size.(CRT ADJ Board)
OK
OK
NG
NG
OKOK
5-5
Symptom: No heading data
FR2115-SME-73
Flow chart 3
Heading dataindication ?
Blank
***.*
OK(Normal)
Power OFF and ON.
OK?
Heading data from the sensor temporarily interrupted.
Check CLK data at INT board, J446 #3,#4 .
OK
OK?
Faulty heading sensoror its interconnectioncable.
NG
NG
Faulty pcb 03P9253
5-6
Symptom: No nav data.
FR2115-SME-72
Flow chart 4
Nav data indication ?All data shown by asterisks or blank.
Some data shown byasteriska or blank.
OK
OK?NG
Wrong data sentence format selection.
Select correct sentence.
Check nav equipment'soutput sentences.
OK
OK?NG
Faulty pcb 03P9253 or IEC61162 not selectedon nav equipment.
Faulty nav equipment orinterconnection cable.
Check LED(CR6) on 03P9253.
5-7
Symptom: Key(s) inoperative
FR2115-SME-71
Flow chart 5
OK
NGWarm upcountdown.
OK
NGOnly one key is faulty.
ALL keys.
Single vertical row only.Single vertical row of keys
is faulty.
Faulty pcb 03P9253.
Faulty S1 to S11 on pcb 03P9255, S1 to S19 on pcb 03P9256.
Defective signal lineFaulty pcb 03P9255(U1).
Press a key.
CR5 lights ?
Lighting
Not lighting
Faulty pcb 03P9253.
Faulty pcb 03P9255.
5-8
Symptom: Antenna does not rotate
FR2115-SME-70
OK
+24V (DJ-1#23, #25)several seconds after TXkey is pressed. TX key is pressed.
+5V when TX key is pressed.
J103 #7on PTU Pcb
End
Faulty PTU Board Faulty Ant. SW on 03P9254,Faulty 03P9253
Faulty antenna cable, Faulty motor.
Flow chart 6
NGAntenna doesnot rotate.
ON
ANT SW position ?
0V (DJ-1 #23, #25) whenTX key is pressed.
OFF
MOTOR +/-signal on DJ1.
Turn on the SW.
5-9
Symptom: No echoes nor white noise
FR2115-SME -69
Flow chart 7
GAIN VR at maximum.
NG
OK
0V ?
OK
Check GAIN controlvoltage with GAIN VR fully CW.(#15 of U100 on SPU)
Rating ?
OK
Faulty pcb 03P9253.
Set GAIN VR at maximum.
NGFaulty VR4 on 03P9255 Board.
NG
Open- orshort-circuit
OK
+12/-12V line onantenna unit.
OK
Check for short circuited ordisconnected video signalline between anntena unitand display unit.
NGFaulty video line
NGFaulty +12V/-12V line
0V
approx, -4V
White noise.Check video signal input to INT board (TP1&TP6).
Faulty pcb 03P9232.
5-10
Symptom: Poor sensitivity
FR2115-SME-68
Flow chart 8
Less than 2000 hrs ?
OK
No echo; poorsensitivity.
No echo (White noise appears)
Check TOTAL ON TIME/TOTAL TX TIME.
Rating ?
OK
Check if display unitoutputs TX trigger.(DJ-1 #4)
DJ-1#7 is normal ?
OK
Check TUNE voltage output from display unit.(Switch from ST-BY to TX)
Manual Tune Voltage :about 2 V to 32 V
TUNE IND value in manual mode ;about 1 to 3 V In manual mode, rotate
TUNE VR.
NG
Poor sensitivity
NG(No TX trigger)
Faulty pcb 03P9253.
NG Faulty pcb 03P9253.
0V
approx. 12V
Replacemagnetron.
To 1)(page 5-11)
OK
Faulty pcb 03P9253.
NG
0V
approx. -4V
TUNE IND in self-test result ?
OK
To 2)(page 5-12)
NG
OK
NGManual tuning ?
Check maximum gain is obtained with maximum tuning indication.
OK
NGOK ?
Defective IF amp.Defective MIC
OK
NGPerform Tuning Initialization.
Defective IF amp., MIC, or SPU board.
Defective EEPROM, Defective back-up ckt
Check input video signal to INT Board, TP1 & TP6.
OK? Defective IF AMP (03P9232)
5-11
PW A, PW B, PW C are normal ?
Measure magnetron current in TX mode.
In manual tune, measure tune volt, at DJ-1 #7, while rotating TUNE VR.
OK
MAX. voltage
about 3V
Rating
OK
Magnetron usagetime within about
20000 hrs.
OK
Check puselength select signals.
Manual tune voltage :about 2 to 32 V
Manual tune IND.voltage:about 1 to 3V
NG
NG
NGFaulty pcb 03P9253.
NG
about 1V
Faulty pcb 03P9253.
Replace magnetron.
From 1) on page 5-10.
FR2115-SME-66
Check TUNE IND voltage in self-test result display.
Signal S1PW A,DJ1 #18 LPW B,DJ1 #13 LPW C,DJ1 #1 L
S2LLH
M1HLL
M2LHL
M3LHH
LHHH
Faulty MIC,Defective 03P9232
Rating ? Defective magnetron
FR-2115 : 4.6 V ‘5.3 Vdc (L)FR-2125 : 7.4 V ‘8.1 Vdc (L)
NG
OK
Defective 03P9232,Defective 03P9230.
5-12
Rating
OK
Rating
OK
Measure TX-HV in ST-By mode.
NG
Defective Magnetron or MIC
From 2) on page 5-10
FR2115-SME-67
Faulty PCb HV-9017
FR-2115: 7.4 V to 7.6 Vdc (S1)FR-2125: 8.2 V to 8.4 Vdc (S1) 6.5 V to 7.5 Vdc (L)
Rating
OK
NGFaulty magnetron.
FR-2115: 4.6 V to 5.3 Vdc (L)FR-2125: 7.4 V to 8.1 Vdc (L)
NGFaulty pcb 03P9243
In ST-By mode;FR-2115: 310 to 350VdcFR-2125: 520 to 580Vdc
Check magnetron heater voltage inST-By mode.
Measure magnetroncurrent in TX mode.
5-13
Symptom: No GAIN, A/C SEA, A/C RAIN effect
FR2115-SME-65
Flow chart 9
GAIN can beadjusted.
OK
A/C SEA can beadjusted.
Check voltage at U100 #1 on 03P9253 .
NG
NG
OK
A/C RAIN can beadjusted.
OK
End
Faulty pcb 03P9253
Faulty VR4 on 03P9255 board.
MIN : approx. -7 VMAX : approx. 0 V
OK
Check voltage at U49 #14 on 03P9253 .
NG
Faulty pcb 03P9253
MIN : approx. 0 VMAX : approx. 5 V
OK
Check voltage at U100 #7 on 03P9253 .
NG
Faulty pcb 03P9253
MIN : approx. -7 VMAX : approx. 0 V
OK
NG
NG
Faulty VR3 on 03P9255 board.
Faulty VR2 on 03P9255 board.
5-14
Symptom: Target cannot be acquired
Flow chart 10
AD format HD datareceived
*Heading data in NMEA183 cannot be used for ARP.
Transfer rate?
25 msec
EPA or ARPA?
OK
OK(Max gain: Max value, min gain: min value)
Selftest result?
Input signal test 1result?
H, B, T and V are OK.
All targets acquired ?
Some targers not acquired
OK?
200 msecSelect 25 msec, AD format.
ARP/DSP is NG.
H, B, T, and/or V is NG.
0 or no change
All targer not acquired
Faulty pcb 18P9002
Faulty pcb 18P9002
Faulty pcb 18P9002
E PA When CR1 on ARP board is off : faulty 18P9002.When CR1 on ARP board is blinking : faulty 18P9002 or 03P9253 .
No defectived board presumedCheck acquisition conditions.
Incorrect input or Faultypcb 03P9253.
System fail?
No error indicationH, BP, T, V, Gyro
Faulty pcb 18P9002
FR2115-SME-64
ARPA
ARP/DSP is OK.
Error indicationRotating GAIN VR, observe FE-data in inputsignal test 2.
SCHEMATIC DIAGRAM
Drawing Type Drawing No. FR-2115/2125 Page
INTERCONNECTION DIAGRAMS - C3464-C01 ¡ S-1
DISPLAY UNIT GENERALSCHEMATIC
RDP-124(AC) C3464-K01 ¡ S-2
RDP-124(DC) C3464-K19 ¡ S-3
CENTER PANEL PRINT03P9255(1/2) C3464-K04 ¡ S-4
03P9255(2/2) C3464-K05 ¡ S-5
SUB PANEL PRINT 03P9254 C3464-K06 ¡ S-6
RIGHT PANEL PRINT 03P9256 C3464-K07 ¡ S-7
INT BOARD
03P9252(1/4) C3464-K08 ¡ S-8
03P9252(2/4) C3464-K09 ¡ S-9
03P9252(3/4) C3464-K10 ¡ S-10
03P9252(4/4) C3464-K11 ¡ S-11
MOTHER BOARD03P9251 C3464-K12 ¡ S-12
03P9251 C3464-K13 ¡ S-13
DEGAUSS BOARD PDM9025 C3352-K18 ¡ S-14
TX-HV BOARD HV-9017 C3352-K07 ¡ S-15
PTU BOARD03P9245(AC) C3464-K03 ¡ S-16
03P9246(DC) C3464-K18 ¡ S-17
MAIN BOARD(CRT) PBH172 C3464-K20 ¡ S-18
VIDEO BOARD(CRT) PBH173 C3464-K21 ¡ S-19
IF3-A10 BOARD(CRT) UBH188-A00010 C3464-K22 ¡ S-20
SOCKET BOARD(CRT) UBH182-A00010 C3464-K23 ¡ S-21
CONNECTION BOARD(CRT) UBH207-A00010 C3464-K24 ¡ S-22
PROCESSOR BOARD64P1106(1/2) C4340-K01 ¡ S-23
64P1106(2/2) C4340-K02 ¡ S-24
PERFORMANCE MONITOR I/F 03P9225 C3464-K17 ¡ S-25
RGB BUFFER BOARD 03P9229 C3464-K25 ¡ S-26
ALARM BOARD 03P9262 C3464-K26 ¡ S-27
SCANNER UNIT - J3464-K02 ¡ S-28
MODULATOR BOARD 03P9244 C3464-K14 ¡ S-29
RFC BOARD 03P9243 C3464-K15 ¡ S-30
IF AMP BOARD 03P9232 C3464-K16 ¡ S-31
BEARING SIG GEN BOARD MP3795 C3352-K10 ¡ S-32