Operating
system
Operating
frequencies
Speedrange
Distancerunrange
Depthrange
Speedmeasuringaccuracy
Totaldistancerunaccuracy
Shipspeedindication
IEC61162-1inputs
(NMEA0183)
Dataoutputs
Powersupply
Powerconsumption
Operatingtemperature
TheJLN-550DopplerSonarisdesignedtoprovideshipspeedinformationwithhigherstabilityin
thedualfrequencymodes;oneusingalowerultrasonicfrequencythatisadequatetomeasurethe
ships speed against the ground up to larger depths and the other using a higher ultrasonic
frequencythatallowstheshipsspeedagainstthewatertobemeasuredeveninwaterwithtiny
bubbles. The transduceris designed fordual-frequency transmission, butits size issmaller than
theconventionalmodels.
Shipspeedmeasurementisinsensible tobubblesgeneratedinhigh-speednavigation,ensuring
stablespeeddisplay.
Thetransducerissubstantiallydownsized,allowingittobeinstalledonthebowsidethatis
littleaffectedbybubbles.
Anunderwater-mateableconnectorisadoptedforthetransducer,sothatatransducercanbe
replacedataquayevenincaseofitsfailure.
The equipment is provided with an additional function of indicating the ships fore and aft
speedsandportandstarboardspeedsbyenteringGPSinformation.
Theshipsport andstarboardspeedsatitsarbitraryposition canbeindicatedbyentering
ROTinformation.
AnoptimalDopplersonarsystemcanbeconfiguredbycombiningavarietyofoptions.
On-linemaintenance(option)allowsanyfailuretobedetectedduringnavigation.
Thisequipmentisdesignedtocomplywiththefollowingstandards:
IMOA.824
(
19
)
RevisedMSC.96
(
72
),IMOA.694(17),IEC61023:1999,IEC60945:2002andIEC61162-1:2000
FEATURES
SPECIFICATIONS
2-axis4-beampulseDopplersonaror
ROT-combined3-axis4-beampulseDopplersonar(ROT:option)
240kHz(BT:forspeedagainsttheground)
2MHz(WT:forspeedagainstthewater)
BTFore/Aft:
−
10.00to+40.00kts
Port/Stb.:
−
9.99to+9.99kts
SternP/S:
−
9.99to+9.99kts(withoptionalROT)
WTFore/Aft:
−
10.00to+40.00kts
0to99999.99nm
BT:2to250m(belowhullbottom)dependinguponseabottomconditions
WT:3mormore(belowhullbottom)
±1%or±0.1ktswhicheverisgreater
±1%or±0.1nmwhicheverisgreater
XX.XX4-digitindicator(inktsorm/s)(P/S:3-digit)
Analogindication(inkts)
ROT(SternP/Sspeed)**ROT(excl.GPROT)
GPS(GPSshipspeed)GGA,RMC,RMA,GLL,VTG
GYRO(GPSshipspeed)HDT,HDG
IEC61162-1: 2000outputs:5circuitsVBW,VLW,DPT,DBT
DCvoltageoutput:2circuits(foranalogindicator)
Optocouplersignal:8circuits(200pulses/nm)
Relayclosuresignal:1circuit(200pulses/nm)
Relayclosuresignal:1circuit(Powerfailalarm)
100/110/115/220/230VAC
±10% 、50/60Hz,single-phase
300VAorless
−
15to+55℃