1.1

1 .2 GENERAL SPECI FICAfION

' . i

1 .2 .1

' 1.2.41.2.5

---/'iI

GeneralScanner UnitTransmitter-Receiver UnitDisplay UnitDimensions and WeightslNTER"Unit Distance

< ^ -l> cv4x'

1-11._-l\

.

,_

.

--,,.,4:, -

, .. .a' :

NCD ?53 NCD 754

r-s.!r

(60 Kw)

coMPostTtoNThis manual describes the JRC Large Type Marine Radar Series: Models JMA-650-

1 19 , JMA-85O-1 l9 , IMA-6 60 aod JMA-8 60.Each equipment consists of a slot antenna of 7 ft, 9 ft (X-band) or 12 ft (S-band)

nominal aperture, taansmitter-receiver unit providing an output of 50 kW (X-band) or60 kW (S-band) and display unit having a cathode-ray tube of 12 or 16 in. diameter, com-bined wiih full-solid-state circuitry (excluding special electron tubes).

Figwe 1-l illustrates the composition of this ladar series along with their componentdesignation names,

(50 KW)

f7 fr.

:

II

NI

Tabte 1-1 lists the power rcquirements for each equipment of the radar series, whichare fed wirh as\ociated ship's Do!rer supplies.

TABLE I.I JMA.RADAR SERIFS POWEB REAUIREMENTS

RADAR MODEL POWER REQUIREMENTS *

JMA-650-7 100/110/115 V AC, 50160Hz, 14130

tMA-650-9 1 0 0 / 1 1 0 / 1 1 s V A C , s 0 / 6 0 H 2 , 3 0

JMA-850-7 110/110/11sV AC, s0 l60 Hz, l , t l3 .b

JMA-850-9 100 /110 /115 v AC, 50 /60 Hz , 3d

JMA-660JMA-860

100/110/11sVAC, s0 l60Hz, t , !2201440V AC, 60H2, 30 (for scanner motor)

Note: * When usiry a ship's porrer suppl, af 220y AC ar 440y AC for the radar power mains10Al1l0/115YAC, the step4own trunsfomer must be additionally incoryotuted.

The following optional equipments are available.Optionsl1) C.F.A.R. Unit2) Logadthmic Reciver with AFC

3) True Motion Unit4) Performance Monitor

5) Inte.switchins Unit

6) Sub Display Unit7) De-icing Scanner Unit

NNB-52NAF-34 for X-bandNAF-35 for S-bandNCZ,6E9 1',71 0NJU-13 (X-band)NJU-15 (S-band)NQE-448, cross typeNQE-414, master-slave typeEX. JAS-8OONKE-189DNKE-I89DFNKE-I9ODFNKB-195D2NKE-I95D4

?ft.X-band,lO)7ft. X-band,3d)9ft. X-band)

12ft. S-band 220V AC)1 2 ft. S -band 440V AC)

1-3

-*}atF-

Frequency range

Power Supply

Power consumption 850 VA

50160 HzI Q

+ AC22ol440V60 Hz3tb

650 VA* 1400 vA

*: For sc ddve motor

JMA-650-9JMA-850-9

50160 Hz3O

JMA-660JMA.86O

1200 vA

.Variationinput voltagefrequency

System Environments

Ambient temperatuerange

Rlative humidity(at +40"C)Vibration

Operating ratedwind load

Suffival windload

Transmittr Receiver and Display

-15' to -f55"C

957.

: 3 mm in full amplitude: 0.?5 mm in full amplitude: 0.2 mm in full amplitude

1.2 GENERAL SPECIFICATION

1.2.1 GeneralRadar unit Type JMA-650-7

JMA-850-7

9345 - 9405 MHz(3 cm, X-band)ACl00/110/1rsvsol60Hzrol34

! t o%! 6 %

Scanner

- 2 5 ' t o + 5 5 " C

95%

0 to 500 cpm500 to 1500 cpm

1500 to 3000 cpm

100 knot

150 knot

3025 - 3015 MHz(10 cm, S-band)

AC1O0/110/ l1sv Ac l00 /110/ l1sv

-\

_--

1

1-4

IlrA-tI

Unh1.2.2 Scannei

Scanner NKE-189NKE.189F

End-fed slotted array

Horizontal

Approx. 22 rym(60 Hz)

NKEI9OF

Approx. 26 rPm(60 Hz)at High speedApprox. 17 rpm(60 Hz)at Low speed

9 f t

2810 mm

NKE-195-2/4

Approx. 22 rym(60 Hz)

12 ft

3900 mm

unit Type

Type

Polarizatiorl

Rotation

Size

Swing Circule

Beam width at -3 dBpolnt

HodzontalVertical

Side lobe levelWithinlr l0'Outside.10"

Gain

1.2.3 TE itter'Rcsilet Unit

T/R TYPe

.

Pulse genetator

Peak Power(nominal)Pulse width/P.R.F.(Range)

l f t

2260 nm

20"

t6 dB-32 dB

3l dB

0.8"20'

:26 dB-32 dB

32 dB

1.9"25"

-26 dB-32 dB

28 dB

NTG-250

Solid-state modulator

s0 kw

NTC-260

60 kw

0.08ps/3000 Hz (0.25' 0.5, 0 ?5, l 5 nm)0.2 ss/2000 Hz (3 nm)0.? ps/1000 Hz (6, 12nm)1.0 Fs/ ?50H2 (24, 4a lrm')1 .0 t , s / 500H2 ( l 20nm)

/= \ / i \No: with the "PuLSE w)DTH" switch set to \9 posidon from.

Receivercharactedstic

I. F. frequency

I. F. band width

Noise Figure(nominal)

1.2.4 Di3play Unir

Display unit Type

CRT diameter

CRT effectivediameter

Ingarithmic with balanced mixer

60 MHz

lTMHz 0-08!s and 0.2 ps pulse v/idth3 MHz 0.? ps and i ps pulse width

l0 dB

NCD-?53

12 in. (305 mm)

219 fin\

Better than 1'

Within 0.5'

NCD-754

16 in. (403 mm)

368 mm

Beadng accuracy

Heading marker

Range discrimination 20 m or less

Minimum lange X-band 25 m or lessS-band 30m or less

Range scale 0.25 , 0 .5 , 0 .75 , 1 .5 , 3 , 6 ,

o . l1 . o 1 , o .3 . o 2s- o_5.

t2,

Range ring accuracy l,ess than 1.5% o{

--!a'

1.2.5 Dimn3ions End Weights

Unit Type

NKr"189/NKE-189F(7 ft scanner)

NKE-190F(9 ft scanner)

NKE-19s-2/4(12 ft scanner)NTG-250(s0 kw T/R)NTG-260(60 kw r/R)NCD-753(12 in, display)NCD-754(16 in. display)

Height width Depth Weight

581 mm,

625 mm

845 mm

635 mm

694 mm

1028 mm

1032 mm

2260 mm

2810 mm

3900 mm

520 mm

650 mm

655 mm

770 mm

(swing circle)

(swing circle)

(swing circle)

305 mm

375 mm

Approx.! 46 kg

Approx. 7? kg

Approx. 172 kg

Approx. 47 kg

Approx. 65 kg

Approx. ?2 kg

Approx. 95 kg

517 mm

645 mm

1.2.6 INTEB-Unit Dbtance

Between units

Scanner and displdy unit

Scanne! and tmnsnitter receiver unit

Display and tmnsmitter rccivor unit

Waveguide and HF coaxial cable

Maximum distance

) u m3 0 m

l u m

2 0 m

1-7

FIGURE

202

201

LIST OF OUTLINE DRAWINGS

SCANNER UNIT TYPE NKE,189/189F' OUTLINE DRAWING

SCANNER UNII TYPE NKE.IgOFOl-tTLINE DRAWINC

SCANNER UNI I TYPE NKI . - I q5 -2 4OUTLINE DRAWING

TRANSMITTER.RECEIVER UNIT TYPE NTG25OOI'TLINE DRAWING

TRANSMITTER.RCEIVER UNIT TYPE NTG.26O. OUTL INF DRAWI \GDISPLAY,'UNIT TYPE NCD.753 OUTLINE DRAWINGDISPLAY UNIT TYPE NCD-754 OUTLINE DRAWIN(;

i-203

204

205

206207

. \

102103104105106i0?

1081091 1 0

l112

1 1 3

I l 4

LIST OF ILLUSTRATIONS

TITLERADAR TYPE JMA.65O-? GENERAL SYSTEM DIAGRAMRADAR TYPE JMA-650.9 GENERAL SYSTEM DIAGRAMRADAR TYPE JMA-850-7 GENERAL SYSTEM DIACRAMRADAR TYPE JMA,85O-9 GENERAL SYSTEM DIAGRAMRADAR TYPE JMA-660 GENBRAL SYSTEIVI DIAGRAMRADAR TYPE JMA-860 GENERAL SYSTEM DIAGRAMRADAR TYPE JMA-650/850-7, JMA-650/850,9

SYSTEM BLOCK DIAGRAMRADAR TYPE JMA-660/860 SYSTEM BLOCK DIAGRAMRADAR TYPE JMA-650/850-7 INTERCONNECTION DIAGRAMRADAR TYPE JMA.65O/850-9 INTERCONNECTION DIAGRAMRADAR TYPE JMA-660/860 INTERCONNECTION DIAGRAMRADAR TYPE JMA-650/850-7

POWER SUPPLY SCHEMATIC DIAGRAMRADAR TYPE JMA-650/850 9

POWER SUPPLY SCHEMATIC DIAGRAMRADAR TYPT J\ '{A 660/800

POWER SUPPLY SCHEMATIC DIAGRAMSCANNER UNIT TYPE NKE,I89/ 189F

SCHBMATIC DIACRAMSCANNER ut{lT TYPE NKE-l 89/ 1 89F/ 1 89D/1 89DF (WITH

RESOLVER BUFFER CIRCUIT) SCHEMATIC DIAGRAMscANNtR t ' l{ lT TYPE NKE-190F/190DF

SCHEMATIC DIAGRAMSCANNER UNIT TypE NKE-195-2/ I 95-4 I 19 5D2 I 19 5D4

SCHEMATIC DIAGRAMTRANSMITTER-RECEIVER UNIT TYPE NTG-250

SCHEMATIC DIAGRAMTRANSMITTER-RECEIVER UNIT TYPE NTG-260

SCHEMATIC I]IAGRAMDISPLAY UNIT TYPE NCD-753/754

I\I LRNAL CONNECITON DIACRAMDISPLAY UNIT TYPE NCD-?53/754 WIRING DIAGRAMDISPLAY UNIT TYPE NCD-753/754

NSK WIRING DIAGRAMDISPLAY UNIT TYPE NCD-753/754

TERMINAL BOARD SCHEMATIC DIAGRAMDISPT AY UNIT TYPE \CD-75J 754

POWER UNIT SCHEMATIC DIAGRAM

:*-\l

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1 1 6

11',7

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1 1 8

1 1 9

i 2 0

121

t22123

124

i 2 5

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FtG. ls tritansintien-necetvER INIT iype uie-zoo

T

FIG. 1'5 TBANSMITTER.BECEIVEB UNIT TYPE NTC'2&

t(J

,adl

FIG. 1"7 DISPLAY UNIT TYPE NCD'753

FtG. t-8 DTSPLAY IJNIT TYPE NCD'754

1-10

SECTION 2: TECHNTcAI DESentPrroN

2.1 GENERAL OPERATION

2.2 POWER SUPPLY SYSTEM

2-2.1 Primary Power SUPPIY2.2.2 T6nsmitter'Receiver Unit Power Supply22.3 DisPlaY Unit Power SUPPIY

2.3 SCANNER UNIT(Tvpe: N KE- 189/189 F l19OF 1195'21195'41

2'3.1 Radiator2-3.2 Rotary Driving Assemblies

2 .4 TRANSMITTER.RECEIVERUNITTYPENTG'250/260

2.4.1 Power Supply Circuit Section;

.--" 2.4,2 Microwave Circuit Section2.4.3 Modulator Soction2'4'4 Receiver Section

2.5 DISPLAY UNIT TYPE NCD-753/754

2-5-1 Rotary Svnchronizing and De{loction System {lncluded in PC401}2.5.2 Pulsewidth Switching Circuit {lncluded in PC401l25g T6nsmission Trigger Generator Circlit (lncluded in PC401)2.5.4 Video Unblanking System2.5.5 Timer Circuit (lncluded in PC405)2'5 6 Time Base {lncluded in Pc/1(}2)

' 25,7 VRM Circuit (lncluded in PC403)25.A Power SuPPIY Circuit2 .5 .9 CFAR Un i t TYPo NNB-52

2-1

2,1 GENERAL OPERATIONThis section descdbes the general operation in the Radar Series: JMA-650-7/9,

JMA-850-7/9, JMA-660 and JMA-860.Each of these models consisrs of a scanner, tmn$nitter-receiver and disptay unit,

as listed in Table 2-1-1, below.

TABLE 2.1.1

Type RadiatorI*ngthPeak Output

PowerCRT

Diaaeter

JMA-65G7 7 f t 50 KW

JMA-65G9 9 f t 50 KW 12 irr.

JMA.85G7 7 f t 50 KW l6 in.

JMA-850-9 9 f t 50 KW l6 in

JMA.66O t2 ft 60 KW lz ln .

JMA.86O 12 fr 60 KW 16 in,

a

The block diagrams for explanation of the cicuits are lhown irl Figures 2-l-l and \-i'

A &agnetron oscillates in response to the transmission tdgger to provide a microwave,which is radiated faom the scanner unit. When the microwave ndiated outside from itsradiator strikes on any target, a reflected wave retums to the scanner unit, which transfersit to a mixer in the rcceiver via a circulator, The received sinal is amplified in the rcceive!and sent to the display unit as a video signal. The display unit presents the signal a! a brightecho on the cathode ray tube by means of CCD.

2-2

NCD - y53,/ 74 DISFI-AY UNI'I-

PL+OI

DOtCOUN

E

c c I

t-*'ll**-S

PC407 PC40 l

I 6 R H I0 s c

c 402 PC4t2

REJECT

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NC D - 753 ,/ 7,5+ DI S FIAY UNI-T-

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EYRO SIqNAL

N]KE- lEq /n jF SCANNER UNIT

F/*ll . : .* l

lPc4o'lII*GqIEA! ourl

i P[!TTER-------------l

ff] t-';x;l L''qW YlPctoz_-_:l

I E Ui.-l aauN K E - I 9 O F

SCANNER UN.]-

TRANSMl-frER- RECEITE RNTG - 25'UNTT

SHIP'S \,AINSACIO0/110/ 1t5V

50/ 6ollz | 9/'3 f

System Block Diagrum

yroEo

F t G . 2 - 1 - 1 Radat Type JMA-650-7 /9, JMA-850-7 /9

NCD -'153 / 154 D I S P L A Y U N I T

REJICf

Ilr*/";L:y_l_I REAp our

G Y R O S I G N A L

N K E - l 9 s - 2 l / N K + - / 9 5 - 4 SUNNER UNIT

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Type JMA-660/860 System Block Diagnm2.4

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2.2 POlivER SUPPLY SYSTEM

2.2,1 Primary Power SupplyThis radar series employs pdmary power supply as listed below-

o Model JMA-650/850-? rudar:Voltage : 100/110/115V AC r 1070Frequency : 50/60 Hz, single/three phase

" Power consumption : 850VA

o Model JMA-650/850,9 radar:Input Power Supply,

Voltase : 100/110/115V AC r 10%Frequency : 50/60 Hz, three phasePower consumption : 1200VA

o Model JMA-660/860 radar:Input Power Supply for scanner motor;

Voltage : 2201440Y AC!10%Frequency . 60Hz !6%, three phasePower consumption : 1400VA

Input Power Supply for other than scanner motor;Voltage : 100/110i 115V AC 1 10%l requency | 5Ol60Hz, Single phasePowet consumption : 650VA

The input power supplies are controlled by the POWER switch on the control paneland connected to voltage regrilato. type power supplies in the transmitter-receiver unit anddisplay unit.

The power supply diag.am of the each radar type is shown in FIG. 2-2-1, FlG. 2-22and FIG. 2-2-3.

2.2.2 Transmitter-Receiver Unit Power Supply

The power transformer T20l in the tansmitter-receiver unit dist butes AC line inputinto two power voltages. The +90vac supply among them is supplied to the automaticvoltage rcgulator circuit (AVR), which provides a regulated supply voltage of 60V forthe transmitter-receive!.

In addition, converter type pov/er supplies are provided for producing requfued DCsupply voltages for the modulator and rcceivefs. T'he DC power supply block diagram isshown in FIC. 2-2'4.

2-5

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Beze l AsSyRetaj.!r ing PIate, CRTSelrs ScretCRT

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