Furuno FR-2115 User manual

MARINE RADAR
FR-2115/2125
Back

FIRST EDITION : DEC 1998
Your Local Agent/Dealer
FURUNO ELECTRIC CO ., LTD .
c
9-52, Ashihara-cho,
Nishinomiya, Japan 662
Telephone: [phone]
Telefax: 0798-65-4200
All rights reserved.
Printed in Japan
PUB. No. SME-34640-A
FR-2115/2125
(KAOK)

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

1-1
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) 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 V 110 VAC : 90 to 126 V
220 VAC : 198 to 253 V
The major parts and P.C. Boards used in the display and scanner units are tabulated on the next
page.
Chapter 1. GENERAL

1-2
1.2 Boards & Major Components
DISPLAY 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. of
mainlobe –28dB or less
Sidelobe
Attenuation 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 m
Compass 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 & Pulse
Repetition Rate 1.2 µs,
approx. 600 Hz (L : 12 nm to 48 nm)
approx. 500 Hz (L : 72 nm ,R-type/
96nm,IMO-type)
1.2 µs,
approx. 600 Hz (L : 12 nm to 48 nm)
approx. 500 Hz (L : 120 nm R-type/
96nm,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 nm
Range 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 64646464666 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 Accuracy 1 % 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 m
Compass safety
Distance Steering 1.05 m