Furuno FR-2155 User manual

MARINE RADAR
MODEL FR-2155
PRINTED IN JAPAN

C
9-52, Ashihara-cho,
Nishinomiya, Japan
Telephone: [phone]
Telefax: 0798-65-4200
Your Local Agent/Dealer
All rights reserved.
PUB. No. SME-34670-A
FR-2155
(
KAOK
)
FIRST EDITION : JUL 2000
Printed in Japan

CONTENTS
Chapter1. GENERAL
1.1Outline .............................................................................................1-1
1.2 Boards & Major Components..........................................................1-2
1.3 Specifications..................................................................................1-4
Chapter 2. BLOCK DESCRIPTION
2.1 Overview.........................................................................................2-1
2.2 Block Diagram of Display Unit .......................................................2-2
2.3 Function of Each Board (Display Unit)............................................2-4
2.4 Start-up Sequence............................................................................2-6
2.5 Block Diagram of SPU Board..........................................................2-8
2.6 Video Signal Flow...........................................................................2-9
2.7 Block Diagram of SPU Board (Video Amplifier).............................2-10
2.8 Auto Tuning Function......................................................................2-11
2.9 Tuning Indication............................................................................2-12
2.10 Manual Tuning..............................................................................2-12
2.11 Tuning Circuit ...............................................................................2-12
2.12 Echo averaging (EAV 1/2/3)..........................................................2-13
2.13 Echo Stretch 1/2 and Enhanced video............................................2-14
2.14 Memories & Memory Frame Priority.............................................2-15
2.15 Antenna on/off Control..................................................................2-16
2.16 Check of ARP and RP board Connection.......................................2-17
2.17 ARP-23 vs. ARP-26 ......................................................................2-17
2.18 Simple ARPA block diagram.........................................................2-18
2.19 ARPA block diagram.....................................................................2-19
2.20 ARPA target acquisition and Tracking ...........................................2-20
2.21 ARPA Land Discrimination...........................................................2-20
2.22 ARPA INITIAL SETTING MENU................................................2-21
2.23 Block Diagram of RP Board..........................................................2-24
2.24 INPUT/OUTPUT Data on INT Board (03P9252)..........................2-25
2.25 Sentences Receivable at J450 on INT-9170...................................2-26
2.26 Radar and ARPA output signal from INT-9170..............................2-27
2.27 Monitor signal from J449...............................................................2-28
2.28 Power Supply Circuit (AC)............................................................2-29

CONTENTS
2.29 Scanner Unit .............................................................................2-31
2.30 Block Diagram of IF AMP Board (03P6734) ............................2-32
2.31 Block Diagram of IF MD Board (03P6666) ..............................2-33
2.32 Block Diagram of PF Board (03P6668/03P6669)......................2-35
2.33 BEARING SIG GEN Board (MP-3795)....................................2-38
2.34 Power Supply Unit (PSU-001) ..................................................2-39
2.35 TX-HV Power Supply (03P6680/03P6810)...............................2-40
2.36 Power Supply (03P6667)...........................................................2-41
2.34 Power Supply Unit (PSU-004) ..................................................2-42
Chapter 3. ADJUSTMENT
3.1 Adjustment (Display Unit).............................................................3-2
Location of Major parts ....................................................................3-2
Adjustment of CRT...........................................................................3-5
Location of parts on SPU Board (03P9253) ......................................3-7
Location of parts on ARP Board (18P9002)......................................3-8
Location of parts on RP Board (14P0298).........................................3-9
Location of parts on INT Board (03P9252).......................................3-10
Location of parts on GYRO Board (64P1106)...................................3-11
Location of parts on PTU Board (03P9245)......................................3-12
Location of parts on Power Supply Unit (PSU-001)..........................3-13
Location of parts on Power Supply Board (03P6667)........................3-14
Location of parts on INT Board (03P9003).......................................3-15
Location of parts on TX-HV Power Supply Board (1)(03P6810) ......3-16
Location of parts on TX-HV Power Supply Board (2)(03P6680) ......3-17
Location of parts on Power Supply Unit (PSU-004)..........................3-18
3.2 Adjustment (Scanner Unit)............................................................3-19
Location of parts on Scanner Unit (RSB-0049/0050) ........................3-19
Location of parts on RF Unit (RTR-030)...........................................3-20
Location of parts on Modulator Board (03P6666C)...........................3-21
Location of parts on IF AMP Board (03P6734C)..............................3-22
Location of parts on INT Board (03P9004).......................................3-23
Location of parts on PFN (1) board (03P6668)..................................3-24

CONTENTS
Location of parts on PFN (2) board (03P6669)......................................3-25
Chapter 4. MAINTENANCE
4.1 Dip Switches...................................................................................4-2
4.2 Jumper Settings...............................................................................4-3
4.3 LED Status ....................................................................................4-3
4.4 Self-test ....................................................................................4-7
4.5 Notice on Replacing Major Parts.....................................................4-9
4.6 Program Numbers............................................................................4-10
4.7 How to update system program........................................................4-10
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
Electrical Parts List ...........................................................................E-1
Schematic Diagrams.........................................................................S-1

1-1
1.1 Outline
This manual provides the information necessary for the servicing and adjustment of the radar
FR-2155.
The antenna unit uses a Log IF amplifier.
The features are;
•Flash ROM enabling program update to use a PC
•Non-interlace, high-resolution display (1024x1280 dots)
•Radar mapping capability
(Lines and Marks can be entered without the RP board, Gyro and L/L data required)
•Display unit separable into Monitor, Control and Processor Units
The figure shows the major configuration of FR-2155.
Display Unit
RDP-124
ARPA Board
ARP-26
NAV
IEC 61162-1(Input/Output)
IEC 61162-1(Input)
Speed Log
Option
Performance Monitor (option)
PM-30
Slave Display
SCANNER UNIT
Video Plotter
RP-26
DC24 V or
AC200/220 V, 3f,
50/60 Hz
RU-1758
AC 220/230 V
Gyro Converter
GC-8
Gyrocompass
XN-4A/XN-5A
AC100/110/115/
220/230 V
1φ, 50/60 Hz
Display Unit
AC100 V
1φ, 50/60 Hz
Power Supply unit
PSU-004
AC 110/115 V
Power Supply Unit
PSU-001
AC 110/115 V
AC100/110/115/
220/230 V
1φ, 50/60 Hz
PM-30
TX-HV, heater
±12V
De-icer
Scanner Unit
Chapter 1. GENERAL

1-2
1.2 Boards & Major Components
DISPLAY UNIT
Board Name Type
SPU Board 03P9253
PTU (PWR) Board AC : 03P9245
FILTER Board AC : LF-210
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
RGB Buffer Board (Optional) 03P9229
CRT Unit CDT2136B
Power Supply Unit (PSU-001)
Board Name Type
TX-HV POWER SUPPLY (1) 03P6810
TX-HV POWER SUPPLY (2) 03P6680
POWER SUPPLY PCB 03P6667
INT PCB 03P9003

1-3
Power Supply Unit (PSU-004)
Board Name Type
RELAY Board 03P9146
SCANNER UNIT
Board Name Type
IF AMP Board 03P6734 C
MODULATOR Board 03P6666 C
PFN (1) Board 03P6668
PFN (2) Board 03P6669 B
BEARING SIG GEN Board MP-3795
Magnetron M-4505 E
INT Board 03P9004
Magnetron Current DET Board 03P6827 B
Scanner Motor AC: G0B8222 / DC: RM-6585
MIC SRX-24
MIC INT Board MIC-6550

1-4
1.3 Specifications
SCANNER UNIT
ITEM FR-2155
Radiator Type Slotted Waveguide Array
Radiator Length 8 ft (XN-4A), 10 ft (XN5A)
Horizontal Beamwidth 0.95 deg. (XN4A), 0.75 deg.(XN5A)
Vertical Beamwidth 20 deg. (XN4A, XN5A)
Within +10 deg. to –10 deg.
of mainlobe –28dB or less (XN4A, XN5A)
Sidelobe
Attenuation Outside +10 deg. to –10
deg. of mainlobe –32dB or less (XN4A, XN5A)
Polarization Horizontal
Antenna Rotation approx. 20 rpm (3∅60 Hz / DC)
approx. 16 rpm (3∅50 Hz)
Scanner Housing Structure Open Radiator
Standard 1.65 m
Compass Safe
Distance Steering 1.25 m
TRANSCEIVER
ITEM FR-2155
Magnetron M-4505 E
Frequency &
Modulation 9385 MHz to 9445 MHz, P0N (X band)
Peak Output Power 50 kW
0.08 µs, approx. 2200 Hz (S1 : 0.125 nm to 3 nm)
0.2 µs, approx. 1100 Hz (M1 : 0.75 nm to 6 nm)
0.6 µs, approx. 600 Hz (M2 : 3 nm to 24 nm)
Pulselength & Pulse
Repetition Rate
1.2 µs, approx. 600 Hz (M3 : 6 nm to 120 nm)
Modulator SCR Switc
Duplexer Circulator with diode limiter
Tuning Automatic or Manual
Intermediate Frequency 60 MHz
Bandwidth 25 MHz (0.08 µs, 0.2 µs), 3 MHz (0.6 µ,, 1.2 µ)

1-5
DISPLAY UNIT
ITEM FR-2155
Picture Tube PPI (Raster scan, Daylight display)
Range Scale (nm) 0.125 0.25 0.5 0.75 1.5 3 6 12 16 24 32 48 120
Range Ring lnterval 0.0250.050.10.250.250.512448820
Number of Rings 5553666646466
Bearing Resolution 1.18 deg. (XN4A), 0.98 deg. (XN5A)
Range Discrimination Better than 31 m
Bearing Accuracy +1 deg to –1 deg.
Minimum Range Better than 23 m (0.25 nm range)
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, $RATLL
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

1-6
ENVIRONMENTAL CONDITIONS
ITEM FR-2155
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-2155
AC Power Supply 110 VAC : 90 to 126 V
220 VAC : 198 to 253 V
Power
Consumption Display Unit: 4.0 A (AC100 V)
Scannerb Unit: 2.1 A (DC24V Motor)

2-1
2.1 Overview
Outline
Scanner Unit
Antenna
Mag. MIC
RFC IF
Amp
Transceiver
Display Unit
ARP Board
(optinal)
Processor (SPU Board)
PanelPower
QV
HD, BP
Video
Trigger
HD, BP,
TRIGGER,
VIDEO
GYRO/SPEED
(NMEA or Log)
CRT
Ship's mains
(100/110/115,220/230VAC)
NAV/GYRO
Data
TTM(ARP-26)/
OSD,RSD,TLL
Mod.
TX-HV
TX-HV
RP Board
(Optional)
TTM Data
RELAY
+12V
PSU-004
PSU-001
Trans
24VAC
Power Supply Unit
+12V
-12V
Mag. Heater
RU-1758
220/230VAC
Function of Power Supply Unit
Ship’s mains is supplied to the display unit via the power supply unit PSU-001. Receiving +12 V
from the display unit, the relay in the PSU-001 is turned on and ship’s mains is supplied to the
power supply unit PSU-001 which generates TX HV, magnetron heater voltage, +12 V, and –12
V for the transceiver unit.
The input of the PSU-001 is 100, 110, or 115 VAC, so the transformer RU-1758 is required if
ship’s mains is 220 or 230 VAC.
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.
Chapter 2. BLOCK DESCRIPTION
Figure 2.1 Simplified block diagram

2-2
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.

2-3
HD
BP
Buffer
VIDEO
EXT HD
EXT BP
EXT TRIG
EXT VIDEO
MOTHER
Board
(03P9251)
Level Adj.
Selection SW
(Menu-Selection)
Scanner Unit
HD,BP,
TRIG,VIDEO
RJ-7 or
Main Radar
EXT HD,EXT BP,
EXT TRIG,
EXT VIDEO
MOTHER
Board
(03P9251)
Buffer
Buffer
Buffer
Buffer
Buffer
Buffer
Level Adj.
INT Board(03P9252)
Video Amp.
Level Adj.
SPU Board(03P9253)
GYRO
Board
(64P1106)
Photo
Coupler
NAV DATA
Noise
Filter
SPEED LOG
Photo
Coupler
AD-100
A/D CONV.
POWER
A/D CONV.
Signal
Proeessor Memory
RP Board(14P0298)
Priority
(layering)
Color palette
D/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.P
MAIN
CPU
D.P RAM
ARP Board(18P9002)
SPD
CRS
D.P RAM
Scrolling
VRAM
AGDC
CPU
Multi-
plexer
L/L,
S/C
PWR Board (03P9245)
Regulator Protector
Overcurrent
Detector
Rectifier
Ships Mains
AC 100/110/115V
PM Board (03P9225)
Ships Mains
AC 100/110/115 V
or
AC 220/230 V
Performance
Monitor
+12 V
CPU
Switches
(PM ON/OFF,
Degauss)
PAL Board
(03P9254)
Switches
(Radar Picture,
Menu)
PAR Board
(03P9256)
DEGAUSS Board(PDM9025)
Power
Magnetism
Detector
Degauss
PM ON
HALL 1/2
DEGAUSS
Trackball
TB301
Level CONV.
(TTL RS232C)
To G/A on SPU
PNL Board(03P9255)
SPD
CRS
(Optional)
GYROCOMPASS
To degauso coil
2.2 Block Diagram of Display Unit
FR2155-SME-22
Video
From ACRTC
H SYNC/
V SYNC/
DOT CLK
P.F. Signal from PWR Board
Buffer
Card
I/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)
+12V (PSU-004)

2-4
2.3 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 1) Receptacles of ROM and RAM cards.
2) Used to stores and retrieves data to/from ROM and RAM card.
INT Board
03P9252
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.

2-5
Board Name Function
PNL Board
03P9255
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 Board
03P9254 1) Includes ANT ON/OFF, Performance monitor ON/OFF, and degauss switches.
2) Includes CPU Fail indicator (LED).
PAR Board
03P9256 1) Keys: HL OFF, PANEL BRILL, ACQ, and menu keys
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) 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.
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
Color Monitor
Assy.
CDT-2136B 1) No HV is generated when H Sync. Signal is input to the monitor circuit.
PM Board
03P9255
optional 1) Power supply circuit for the performance monitor

2-6
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.
All power lines are
on.
Power ON
CRT display or internal
operation
Elapsed
time
CPU reset and gets
into start-up
sequence
Beep sounds.
isplay lights.
Automatic
degaussing
3-Minute timer
shows 0:00.
ST-BY indication
appears.
Radar transmits
pulses.
Range selected; panel
key setting changed.
TOTAL ON TIME
and TOTAL Tx TOME
are counted up every
six minutes.
1s
8s
25s
3:05
FR2115-SME-12