Simrad SU90 - Source Level (SL) Measurements; Preparations and Test Hydrophone Data

Finaltestsandmeasurements
Sourcelevel(SL)measurements
Thisprocedurecallsforatesthydrophone.Priortouse,llinthetechnicalspecications
andtheappropriateenvironmentalspecicationsforthehydrophonetobeused.Use
thetableprovided.Finally,youneedtohookupthetestequipmentaccordingtothe
schematicsprovided.
Topics
•Preparationsandtesthydrophonedataonpage199
•Testsetuponpage200
•Sonarparametersonpage200
•Testprocedureonpage201
•Finalizingtheprocedureonpage202
•Sourceleveltestresultsonpage202
Preparationsandtesthydrophonedata
1Obtainthetestequipmentrequired.
aTesthydrophone
bOscilloscope
cSignalgenerator
dScienticcalculator
2Fillinthetesthydrophonedata.
Table2Testhydrophonedata
HydrophonedataValue
Unit
Example
SerialnumberSerialno.
1823860
Dateofcalibrationmonth/year10/96
Calibratedattemperature
°C18°C
SensitivityastransmitterSdB//1µPa/V
117
SensitivityasreceiverMdB//1µPa/V
–209,5
Attenuationextensioncable(0,7/10m)dB
0
Mtotal=M+MextensiondB//1µPa/V
–209,5
3Lowerthetesthydrophoneintothewater,andadjustthedepthsothatitmatches
thetransducer.
4Connectthetestequipmentaccordingtotheschematicsprovided.
SeeTestsetuponpage200.
381293/A
199