JRC JLN-550 - Page 2

Operating
system
Operating
frequencies
Speedrange



Distancerunrange
Depthrange

Speedmeasuringaccuracy
Totaldistancerunaccuracy
Shipspeedindication

IEC６１１６２-１inputs
（NMEA０１８３）

Dataoutputs



Powersupply

Powerconsumption
Operatingtemperature

TheJLN-550DopplerSonarisdesignedtoprovideshipspeedinformationwithhigherstabilityin
thedualfrequencymodes;oneusingalowerultrasonicfrequencythatisadequatetomeasurethe
ships speed against the ground up to larger depths and the other using a higher ultrasonic
frequencythatallowstheshipsspeedagainstthewatertobemeasuredeveninwaterwithtiny
bubbles. The transduceris designed fordual-frequency transmission, butits size issmaller than
theconventionalmodels.
Shipspeedmeasurementisinsensible tobubblesgeneratedinhigh-speednavigation,ensuring
stablespeeddisplay.
Thetransducerissubstantiallydownsized,allowingittobeinstalledonthebowsidethatis
littleaffectedbybubbles.
Anunderwater-mateableconnectorisadoptedforthetransducer,sothatatransducercanbe
replacedataquayevenincaseofitsfailure.
The equipment is provided with an additional function of indicating the ships fore and aft
speedsandportandstarboardspeedsbyenteringGPSinformation.
Theshipsport andstarboardspeedsatitsarbitraryposition canbeindicatedbyentering
ROTinformation.
AnoptimalDopplersonarsystemcanbeconfiguredbycombiningavarietyofoptions.
On-linemaintenance(option)allowsanyfailuretobedetectedduringnavigation.
Thisequipmentisdesignedtocomplywiththefollowingstandards:
ＩＭＯＡ．８２４
（
１９
）

RevisedMSC.９６
(
７２
)
,IMOA.６９４（１７）,IEC６1０２３：１９９９,IEC６０９４５：２００２andIEC６１１６２-１：２０００
FEATURES
SPECIFICATIONS
２-axis４-beampulseDopplersonaror
ROT-combined３-axis４-beampulseDopplersonar(ROT:option)
２４０kHz(BT:forspeedagainsttheground)
２MHz(WT:forspeedagainstthewater)
BTFore/Aft:
− １０.００to+４０.００kts
Port/Stb.:
− ９．９９to+９．９９kts
SternP/S:
− ９．９９to+９．９９kts(withoptionalROT)
WTFore/Aft:
− １０．００to+４０．００kts
０to９９９９９．９９ｎｍ 
BT:２to２５０m(belowhullbottom)dependinguponseabottomconditions
WT:３mormore(belowhullbottom)
±１%or±０．１ktswhicheverisgreater
±１%or±０．１nmwhicheverisgreater
XX.XX４-digitindicator(inktsorm/s)(P/S:３-digit)
Analogindication(inkts)
ROT(SternP/Sspeed)**ROT(excl.GPROT)
GPS(GPSshipspeed)GGA,RMC,RMA,GLL,VTG
GYRO(GPSshipspeed)HDT,HDG
IEC６１１６２-１: ２０００outputs:５circuitsVBW,VLW,DPT,DBT
DCvoltageoutput:２circuits(foranalogindicator)
Optocouplersignal:８circuits(２００pulses/nm)
Relayclosuresignal:１circuit(２００pulses/nm)
Relayclosuresignal:１circuit(Powerfailalarm)
１００/１１０/１１５/２２０/２３０ＶＡＣ
±１０％ 、５０/６０Hz,single-phase
３００VAorless
− １５to+５５℃ 

