FR-2115_2125_SME_34640A
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radar manula...
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MARINE RADAR FR-2115/2125
c
FURUNO E L E C T R I C C O., LT D.
Yo u r L o c a l A g e n t / D e a l e r
9-52, Ashihara-cho, Nishinomiya, Japan 662 Te l e p h o n e : Te l e f a x :
0798-65-2111 0798-65-4200
FIRST EDITION : DEC 1998 All rights reserved.
Printed in Japan
PUB. No. SME-34640-A (KAOK)
FR-2115/2125
CONTENTS Chapter1. GENERAL 1.1Outline...........................................................................1-1 1.2 Boards & Major Components .....................................1-2 1.3 Specifications................................................................1-3
Chapter 2. BLOCK DESCRIPTION 2.1 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. ADJUSTMENT 3.1 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. MAINTENANCE 4.1 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. TROUBLESHOOTING 5.1 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
Chapter 1. GENERAL 1.1 Outline This manual provides the information necessary for the servicing and adjustment of the radars FR-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 than before.
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)
Program Number
0359149-1XX English
Tuning Voltage (displayed at manual tuning) RF Module
120 NM(R-type) 96 NM(IMO type)
Japanese
2.0 V to 32 V RTR-062
Antenna Rotation
RTR-063
24 rpm or 42 rpm
Output Power
12 kW
25 kW
TX-HV Board
HV-9017 A
HV-9017 B
24/32 VDC : 21.6 to 41.6 V 110 VAC : 90 to 126 V 220 VAC : 198 to 253 V
Input Voltage (Ship’s Mains)
The major parts and P.C. Boards used in the display and scanner units are tabulated on the next page.
1-1
1.2 Boards & Major Components DISPLAY UNIT Board Name
FR-2115
SPU Board
FR-2125 03P9253
PTU (PWR) Board
DC : 03P9246, AC : 03P9245
FILTER Board TX-HV Board
DC : 03P9226, AC : LF-210 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 Magnetron
RU-9253/RU-9371 MG5241
Circulator Scanner Motor
MG5436 RC-3686
D8G-516 (24 rpm)/D8G-571 (42 rpm)
Signal Cable
RW-4873
1-2
1.3 Specifications SCANNER UNIT ITEM
FR-2115
Radiator Type
FR-2125
Slotted Waveguide Array
Radiator Length Horizontal Beamwidth
4 ft (XN12AF)
6.5 ft (XN20AF)
8 ft (XN24AF)
1.8 deg.
1.23 deg.
0.95 deg.
Vertical Beamwidth Sidelobe Attenuation
20 deg. Within +10 deg. to –10 deg. of mainlobe
–28dB or less
Outside +10 deg. to –10 deg. of mainlobe
–32dB or less
Polarization
Horizontal
Antenna Rotation
approx. 24 rpm/approx. 42 rpm
Scanner Housing Structure Compass Safe Distance
Open Radiator
Standard
1.65 m
2.15 m
Steering
1.25 m
1.60 m
TRANSCEIVER ITEM Magnetron Frequency & Modulation Peak Output Power
FR-2115
FR-2125
MG5241
MG5436
9380 MHz to 9440 MHz, P0N (X band) 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) Pulselength & Pulse Repetition Rate
0.5 µs, approx. 1000 Hz (M2 : 3 nm to 24 nm) 0.7 µs, approx. 1000 Hz (M3 : 3 nm to 24 nm) 1.2 µs, 1.2 µs, approx. 600 Hz (L : 12 nm to 48 nm) approx. 600 Hz (L : 12 nm to 48 nm) approx. 500 Hz (L : 72 nm ,R-type/ approx. 500 Hz (L : 120 nm R-type/ 96 nm ,IMO-type) 96 nm ,IMO-type)
Modulator
FET Switching
Duplexer
Circulator with diode limiter
Tuning
Automatic or Manual
Intermediate Frequency Bandwidth
60 MHz 25 MHz (0.07 µs, 0.15 µs, 0.3 µs), 3 MHz (0.5 µ, 0.7 µ, 1.2 µ)
1-3
DISPLAY ITEM
FR-2115
Picture Tube
FR-2125
PPI (Raster scan, Daylight display) IMO type; FR-2115/2125: 96 nm
Range Scale (nm) Range Ring lnterval Number of Rings Bearing Resolution
Non-IMO type; FR-2115 : 72 nm, FR-2125 : 120 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
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
5
5
5
3
5
6
4
6
4
6
4
6
4
6
4
6
6
6
6
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
1 % of range or 15 m, whichever is the greater
VRM Accuracy
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 I/O Ports
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, ARPAVIDEO Interswitch port (J457/J458) : For RJ-7 Monitor port (J449) : For PC monitor, Buffer PCB required IEC-61162-1/NMEA 0183 Own ship’s position : GGA>RMC>RMA>GLL Speed : RMC>RMA>VTG>VHW Heading (True) : VHW Heading (Magnetic) : VHW
NAV Data Input
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
Compass safety Distance
Standard
1.40 m
Steering
1.05 m
1-4
ENVIRONMENTAL CONDITIONS ITEM Ambient Temperature
FR-2115 Scanner Unit Display Unit
25 deg. to +70 deg. 15 deg. to +55 deg.
FR-2125
Humidity
Relative humidity 95% or less at +40 deg.
Vibration
IEC 945, Edition 3
POWER SUPPLY & POWER CONSUMPTION ITEM
FR-2115
AC Power Supply DC Power Supply Power Consumption
FR-2125 110 VAC : 90 to 126 V 220 VAC : 198 to 253 V
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)
AC Set
360 VA (no wind)/465 VA (100 knots)
410 VA (no wind)/515 VA (100 knots)
1-5
Chapter 2. BLOCK DESCRIPTION 2.1 Overview Outline
Figure 2.1
Simplified block diagram
TX The trigger pulse from the SPU (Processor) Board is delivered to the MODULATOR Board which outputs the signal to oscillate the magnetron, and then radar wave is emitted from the radiator. 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 digitally processed 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, Bearing pulse, Video, Trigger, Bearing in AD format, and Ship’s speed in IEC-61162. Target acquision and tracking are performed on the ARP Board, and displayed on the CRT. Target data includes target 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 the RP Board. Plotter data generated on the RP board is output to the SPU Board and processed to display them on the screen. The plotter menu is generated on the SPU Board.
2-1
2.2 Block Diagram of Display Unit To degauso coil
HD
MOTHER Board (03P9251)
INT Board(03P9252)
BP VIDEO
Buffer
Selection SW (Menu-Selection)
Buffer
Scanner Unit HD,BP, TRIG,VIDEO
MOTHER Board (03P9251)
SPU Board(03P9253) Color palette D/A CONV.
EXT HD
Buffer
EXT BP
Buffer
EXT TRIG
Buffer
Priority (layering)
RJ-7 or Main Radar EXT HD,EXT BP, EXT TRIG, EXT VIDEO
Video Amp. Level Adj.
Scrolling
Memory
Proeessor
H SYNC/ V SYNC/ DOT CLK
CPU
VRAM
CPU
Buffer
AGDC L/L, S/C
Buffer
Multiplexer
Buffer
D.P RAM
(Optional)
Buffer
Level Adj.
HD,BP
PNL Board(03P9255)To G/A on SPU
Photo Coupler
A/D CONV.
Front end
Card I/F Board (14P0299)
SPD CRS
SPD CRS
Noise Filter
CPU
D.P RAM
D.P RAM
D.S.P
MAIN CPU
Level CONV. (TTL RS232C)
Chart Card/ ERC Card/ RAM Card
Photo Coupler
AD-100
(Optional)
GYRO Board (64P1106)
(Optional) ARP Board(18P9002)
A/D CONV.
PWR Board
PM Board (03P9225)
HALL 1/2
+12 V
Magnetism Detector
Overcurrent Detector
POWER
(Optional) TO RF UNIT
Video
From ACRTC
HD,BP
VIDEO
GYROCOMPASS
Signal
A/D CONV.
Gate Array (G/A)
SPEED LOG
P.F. Signal from PWR Board
RP Board(14P0298)
VIDEO
NAV DATA
CRT
Buffer
Level Adj.
EXT VIDEO
H SYNC(64 kHz), V SYNC(60 Hz), DOT CLK(108.5 MHz)
TX HV
PM ON Regulator
Rectifier
Protector
AC:03P9245 DC:03P9246
Power
Degauss
PAL Board (03P9254) Switches (PM ON/OFF, Degauss)
PAR Board (03P9256) Switches (Radar Picture, Menu)
TB301
Trackball
DEGAUSS
(Optional)
DEGAUSS Board(PDM9025)
FR2115-SME-22
Ships Mains DC 24/32 V, AC 100/110/115 V or AC 220/230 V
Ships Mains AC 100/110/115 V or AC 220/230 V
2-2
Performance Monitor
Function of Each Board (Display Unit) Board Name
Function
SPU Board 03P9253
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 Board 18P9002
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 Board 14P0298
1) Generates data (grid, own ship mark, mark, and ship's tracks, etc.) for the plotter display. 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 Board 14P0299
INT Board 03P9252
1) Receptacles of ROM and RAM cards. 2) Used to stores and retrieves data to/from ROM and RAM card. 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.
2-3
Board Name
Function
PNL Board 03P9255
1) 2) 3) 4)
PAL Board 03P9254
1) Includes ANT ON/OFF, Performance monitor ON/OFF, and degauss switches. 2) Includes CPU Fail indicator (LED).
PAR Board 03P9256
1)
TX-HV Board HV-9017
1) Supplies Tx high voltage to the antenna unit. 2) Contains overcurrent protector.
DEGAUSS Board PDM9025
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 Board 03P9251
1) 2) 3) 4)
GYRO CONVERTER Board 64P1106
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.), and motor drive voltage. 2) Outputs Power Fail (PF) signal to the RP Board. 3) 110 VAC, 24 rpm : 03P9245A 110 VAC, 42 rpm : 03P9245C 220 VAC, 24 rpm : 03P9245D 220 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 VAC 220 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.), and motor drive voltage. 2) Outputs Power Fail (PF) signal to the RP Board 3) DC 24/32 V, 24 rpm : 03P9246 A DC 24/32 V, 42 rpm : 03P9246 C 4) 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 Monitor Assy. CDT-2136B PM Board 03P9255 optional
Outputs encoded data of EBL, VRM and trackball signals. Includes GAIN, STC, FTC, and BRIL volumes. Includes EBL ON/OFF, VRM ON/OFF, FUNC 1/2/3/4, and Range +/- keys. Reads PAL/PAR board status.
Keys: HL OFF, PANEL BRILL, ACQ, and menu keys
Connects each PCB. Includes a connector for the antenna unit. Includes a connector for the RJ-8. Includes a connector for the control head.
1)
No HV is generated when H Sync. Signal is input to the monitor circuit.
1)
Power supply circuit for the performance monitor
2-4
Start-up Sequence Radar start-up sequence
Process 1. The soft start circuit activates to protect the power ON/OFF relay 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. The LED comes on and the inverter goes off when overcurrent is detected. 4. ROM, RAM, I/O port, custom IC, AGDC and VRAM are initialized. 5. The system is initialized using EEPROM and DIP switch data. 6. The timer starts counting down from 3 minutes (time remaining 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 RP Boards. 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.
2-5
ARPA start-up sequence
Power ON * A reset pulse is generated when +5 V line drops to about 4.2 V.
ARPA(18P9002)
(03P9253)
RADAR
Initializes DSP.
Initializes NAIN CPU.
Initializes SPU Board.
CR17 on pcb 18P9002 blinks every two seconds.
Initializes DSP RAM (between DSP and MAIN CPU).
Communicate with DPRAM on ARPA Board to confirm presence/absence of ARPA Board.
Waits for initialization of DSP RAM (between DSP and MAIN CPU). END
Initializes DSP RAM (between MAIN CPU and SPU).
No
END
No
Yes Starts up with no ARPA.
Yes
Yes
No
YES
CR1 on pcb 18P9002 blinks. Yes
FE starts operating. Monitors gyro and speed log signals.
Tx ON
No
Starts up with ARPA.
GYRO/LOG Alarm
OK Yes Tx ON
No
Normal Operation
Yes Monitors radar input signals (HD, BP, TRIG, VIDEO). Yes OK
No
The LED on ARPA Board lights
Display radar picture (radar signal processing) FR2115-SME-13
Figure 2.2
ARPA Start-up sequence
2-6
Max. brilliance : 0.7 Vpp 4 Vpp
P551 QV
C19
VIDEO
C14
TP4(VIDEO)
Video Selector R134
Video Amplifier
U43
A/D Converter REF Voltage Generator U35
MAX : 5 V, MIN : 0 V AC SEA VR GAIN VR A/C RAIN VR
B25 C25
Sampling I/F Rejection Noise Rejection INT TRIG
MAX : 5 V, MIN : 0 V
U44 03S9060
MAX : 5 V, MIN : 0 V
Echo Video Memory U24,26,28, 29,30
Priority
U33
A21 A22
TB XA TB XB
#73 #74
A23
TB YA
#75
A24
TB YB
#76
0.7 V (360 pulses,144Hz) C13
#14
PLL U37
#4
#14
PLL U46
#4
0V
A13
C8
TO RJ-7
C7
Color Paletle D/A Converter P/S Converter U34
P552 CRT VIDEO(R,G,B) 54.25 MHz
* + cursor generation
Coordinate Conversion (r, ) (X,Y)
TP7 (H SYNC)
U79:VlEVEL 1 U81:VlEVEL 3 U82:VlEVEL 5 U83:VlEVEL 7 U85:VlEVEL 9 U86:VlEVEL 11 U88:VlEVEL 13 Odd Level U79,81, 82,83,85, 86,88
Timing Adjuster & Divider #98
A30 A31 A32
To CRT
OSC
4V P552
TP8 (V SYNC)
Trigger Gen. Odd Echo Handling
C20
To CRT
A20
To CRT
C16
OPTION TRIGGER
C17
TX TRIGGER
A25
TUNING CONT.
4V 16.63ms
Echo Processing
Sampling I/F Rejection Noise Rejection
U27 #103
INT TRIG
#97
U45 03S9060
Sampling Clock
Echo Trailing Memory U25
CR7 FROM RJ-7
µs
15.63us
8 V to 12 V HEADING.P
Signal Processing, Echo Trailing, Echo Processing,
(Gate Array)
P551 BEARING
From RP-26 (Video)
Trigger Gen. Even Echo Handling
B23
P552
TRACKBALL
U72:VlEVEL 0 U73:VlEVEL 2 U74:VlEVEL 4 U75:VlEVEL 6 U76:VlEVEL 8 U77:VlEVEL 10 U78:VlEVEL 12 Even Level U72,73, 74,75,76, 77,78
40 MHz
#36
Y1
CR3 8192 pulses
#37 #47 #48
U15
U35
32 MHz
OSC
P551 GYRO DATA
C11
#26
GYRO CLOCK
C12
#25
Graphic Memory
#97
U45 CPU
From U35 #83
U16
CR4 To INS
TP5
ACRTC
#84
B5
B4
P551 From U35 #89
CR8 From INS
TP6
TP9
#83 From U94 #1
Flash ROM(8M) U11
CR5 KEY DATA
#79
B5 CR1
KEY CONT.
B4
#80
P552
CR6
NAV DATA INTPUT
C17
NAV DATA OUTTPUT
A17
#82 CR2
P551 TUNE IND
4 (50 MHz)
12.5 MHz
RAM
EEPROM
U5,7
U10 * Socket type At board replacement remove EEPROM and put on to new board.
Buffer U18,19
Character Generator U42
U1,3,4,6, 8,9
TP1,2
To Dual port RAM in ARP/RP
OSC
#83
TP3
Filter A17
#6 #7 #5 U40
STBY : 0.7 V, TX : About 3 V
U17 #75
SPU Board (03P9253)
R2/C1 FR2115-SME-23
Figure 2.3
Block Diagram of SPU Board
2-7
2-8
From RF Unit
IF IN
J417
A19 A20 A21
External radar or RJ-7
Main/remote display and Radar 1/2 selection
1
J414
MOTHER Board 03P9251
8
C5
A19 A20 A21
J458
J417
P417
about 4.5 Vpp
R134
TP3
about 4 Vpp
VIDEO SEL
R21
TP1
Q40,41
Q18,19
Figure 2.4
K2
+12 V
INT Board 03P9252
J457
P417 RF VIDEO
TP6
Video Signal
Q8,9
about 4 Vpp
Q22,26 OP VIDEO B
J443
J442 Q10,11 OP VIDEO A
RJ7 VIDEO
Q27,28
J444 Q37,38 ARPA VIDEO
C21 C22 B21
8
8
15
8
C21 C22 B21
J414 IF IN
C14
J551
MOTHER Board 03P9251
Slave display
Slave display
RJ7
External ARPA
When the radar is used as a remote display, no signal is output from External ARPA and RJ-7 ports.
The video signal from the SPU board to the ARP board is gain-, STC-, and A/C sea-adjusted.
R140
C14
P551
P551 A18
FR-2115-SME10E
Video Amp. (GAIN,A/C SEAand A/C RAIN Adjustment)
about 4 Vpp
TP12 03P9253
SPU Board
ARP Board
The figure below shows video signal flow. The video signal from the scanner unit and an external radar are adjusted in level by R21 and R134 on the INT board 03P9252 respectively so that the main bang level at TP6 on the INT board is 3.9 to 4.1 Vpp. The R140 on the SPU board is factory-adjusted so that the main bang level is 3.9 to 4.1 Vpp at TP12.
Video Signal Flow
Block Diagram of SPU Board (Video Amplifier) about 4 Vpp VIDEO IN
Buffer
Mix
A/C AUTO : OFF
R140 A/C AUTO : ON
Q9
Gate
Filter
about 4 Vpp (Adjust by R140) TP12
Q17
Buffer
Gate
Q11, Q12
U56
Inverter
Mix
Amp. & Buffer
Q28
Q46
Q44, 55, 56
VIDEO (To ARPA Board:P551 A18)
about 4.2 Vpp TP11
Gain & STC Control Q66, 67
A/C RAIN
Buffer
Echo stretch (range direction)
Amp.
CR75
Q65
Q60 ‘Q64
Q35, Q37
TP4
Video Contrast Selector U96
Log to Linear Converter
Amp.
Buffer
Selector
CR57, 59, 71, 72
Q13, 14, 21
Q22, 23, 15
U43
RF VIDEO (To AD Conv.)
TP13
U87 3.5V
TP9
Differential
Peaking
STC Buffer
Amp.
Gate
Q27
Q26
Q25, 52, 53
U93
U54
0 1us
One-shot
Echo stretch on/off U95
Gain Cont. Gain Cont. (short range) Q34 Q19/20
*not used
*Gain reduced when FTC is on.
U35(Gate Array)
SMPL T
QV VIDEO (From ARPA Board:P551 C19)
Video contrast (menu selection)
STC Curve
about 4.0 Vpp
STC in A/C AUTO mode
D/A Conv.
STC data memory
Q18
U68
U35
*Noise is controlled and gain lowered on ranges up to 6 mile.
A/C RAIN: -7 to 0 V
A/C AUTO (From SPU Board) GAIN: -7 to 0 V Conv.
STC VR Curve Generator
Conv. U100
U100 Q30, 32, 10, U92
A/C SEA: 0 to 5V
0 to 5 V 0 to 5 V
Ant. Height (menu selection)
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.
Antenna Height vs. STC Curve Low Antenna
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.
4.5 V High Antenna
0V Range
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.
Near STC Curve Selection Sharp Curve (H) Standard (M)
4.5 V
Gentle Curve (L)
0V 10 us
Range
Figure 2.5 @STC Curves FR2115-SME-10G
2-9
Auto Tuning Function The system provides auto tuning mode which eliminates the adjustment of the receiver for maximum echoes. The “Tune Initialization” is required after not only the installation but also the replacement of RF unit, magnetron, MIC, and SPU board, so that the tune control voltages for each pulse are memorized onto the EEPROM. The figure below illustrates how the tune initialization takes place. First, full search is performed using a long pulse to find the tuning point (a). Next, short search is performed using all pulses to find tuning points (b). After the initialization, 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 is changed, short search is made once.
Full search
about 32 V
Short search (b)
(a) Tuning control voltage
(b)
Tracking (b)
(b)
(b) Pulse length in use
(b)
Auto coarse tuning point
about 2 V
Time
Max. about 3 V Tuning indicator voltage Min. about 1 V Pulselength EEPROM backup
LP
LP
Auto and Man. coarse tuning pt.
M3
M2
M1
S2
S1
Max. Max. Max. Max. Max. Max. Tuning Ind. Tuning Ind. Tuning Ind. Tuning Ind. Tuning Ind. Tuning Ind. voltage voltage voltage voltage voltage voltage
Figure 2.6
Tune Initialization
2-10
FR2115-SME-14
Tuning Indication The tuning indicator extends more than 80% of its full length on all ranges at best tuning. The self-test result display reads the tune indicator voltage.
Manual Tuning When tuning mode is changed from auto to manual mode, the tuning control voltage (a) found in full search is selected. In manual tuning mode, the graphical tuning control voltage indicator appears under the tuning indicator. The minimum scale is 2 V and the maximum scale is 32 V.
Tuning Circuit Figure below shows the tuning circuit. Tune control voltage is output from P551, A25 on the SPU board. P551 TUNE ENC A.
B21
TUNE ENC B.
B22
U94
(From MOTHER Board)
ENCODER U44
GA U44
GA U35
D/A CONV. U62
F VT #10 #8 x1 0 to 5 V #3 C VT #12
x6
#14
U94
Figure 2.7
Tuning Circuit
2-11
SUM #1
P551 A25
TUNE CONT. (To MOTHER Board)
U94 FR2115-SME-10B
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, the result could be disastrous. Objective and principle of echo averaging The 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 random positions with every rotation of the antenna. To distinguish real target echoes from clutter, the picture is stored and averaged over successive picture frames. If an echo is solid and stable it is 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
2-12
Memories & Memory Frame Priority Memory capacity is 2048x2048 dots, radar display area is 1280x1024 dots, and radius of echo display area is 360 dots. 2048 dots
1280 dots
360 dots
1024 dots
2048 dots
FR-2115-SME-28
Figure 2.9 Memory Capacity and Display Area U24,U26,U28,U29,U30 (5 frames) Radar echo Echo trail Echo in alarm area
Each 3/4 of U8 and U9 (3 frames) Radar map
Each 3/4 of U4 and U6 (3 frames)
Radar mark no frame (data from RP) RP
Each 1/4 of U4,U6,U8 and U9 (2 frames) ARPA U1 and U3 (4 frames) Cursor Gyro Characters no frame Menu +Cursor Data Mask
+ Highest priority Figure 2.10 Priority of Each Frame
2-13
2-14
S1
ANT SW
ANT ON/OFF
17
17
G/A
U35
#46 #17
U20
#16 A5
P551
B19
B18
BP (From RF Unit)
#4
#18
U57
SPU Board 03P9253
3
2
J312
03P9255
J313
03P9254
P313
PANEL Board
PAL Bord
DJ1
J415
J417
J551
6
5
7
7
5
ANT. SPEED
6
5
J103
#1 #32
G/A U35
F/V Converter
U93
Comparator
Q94
Soft start control
CR94,Q97 Chopper
J103
J467
1,2 3,4
5
FR2115-SME-10C
*DC14 to 24 V(With ANT) DC30 V(With out ANT)
U92 Chopper Control
03P9245(PWR Board)
03P9252(INT Board)
U51
03P9253(SPU Board) #16
TX FH STBY FL
P417
A6
TX FH STBY FL
C8
A6
P551
Antenna on/off Control
03P9251
Figure 2.11
22
A5
J551
A17
A18
J412
MOTER Board
1) TX key pressed 2) #A6 of P551on the SPU board is “high” 3) #7 of J103 on the PWR board is “high” 4) 14 to 24 V derived from #1/#2 and #3/#4 of J103 on the PWR board
To rotate the antenna, the followings must be satisfied.
MOTOR(+), MOTOR(-) EFR-2115 EFR-2125
For TX/RX down ANT ON/OFF EFR-2135S EFR-2135SW EFR-2165DS EFR-2125W EFR-2155
TX Key
The SPU board produces the antenna on/off signal. The PWR board monitors the number of the bearing pulse from the scanner unit and changes motor control voltage to maintain the constant speed of antenna rotation. The voltage between #1/#2 and #3/#4 of J103 is about 30 VDC with the scanner unit disconnected.
Antenna on/off Control
Check of ARP and RP board Connection The system checks the connection of the ARP and RP board every power on. If the CPU on the SPU board fails to communicate with the ARPA or RP board, the related display does not appear on 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, 18P9002-2 having U44 of 18S9007. The boards level –1 and –2 having U44 of 18S9001 cannot be used for ARP-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)
2-15
Simple ARPA block diagram
2-16
ARPA block diagram TP12
HD TP4
+12 V TP11
BP
Noise blanker
-12 V TP10
TRIG
TP2
BP U52 PLL VCO
+5 V
FIFO U60
TP5 VIDEO
A/D Converter TP1
TP3 TP8
TP6 TP7 R103 R104 (MAX) (MAX) Video signal check
Comparator
Video Sweep Velocity Converter U59
TRIG Check BP check
HD check
LOG I/F
LOG Check
Gyro
GYRO I/F
GYRO Check
TP9(QV monitor) QV output
Memory for Echo Sampler U56 to 58
Echo Sampler
BP Counter Speed Log
CR32
Land Echo Detection Table ROM U64 CR9 (HD Alarm)
BUS I/F
Status Switch for Error Detection
BUS I/F
18S9007 U44 (Blinks every CR17 2 sec.)
CR12(TRIG Alarm) CR13(
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