Simrad SX90 - INSTALLATION REV C - Finalizing the Procedure; Test Results

SimradSX90
10RetrievetheHydrophonesensitivityastransmitterSfrom
theTesthydrophonedatatable.
11EnterthedataintotheReceivingvoltageresponse(VR)table.
12Retrievethe20logRvaluefromtheMeasurementsresults
table.
13EnterthedataintotheReceivingvoltageresponse(VR)table.
14Calculatethevoltageresponsewiththeformulagivenin
Receivingvoltageresponse(VR)table.
Expectedreceivingvoltageresponseisapproximately:VR=
-90±3dB//1V/µPa
Finalizingtheprocedure
Thevoltageresponsemeasurementshavenowbeencompleted.
Remembertorestoreallmenusettingstonormaloperational
standard.
Testresults
Thetwotablescreatedforthetestresultsareprovidedbelow.
Table9Measurementandcalculationresults
Measurements/calculations
ValueUnitExample
NoiseleveldB-25,2
U(p-p)
volt0,8
U(rms)=U(p-p)/2/√2
volt0,28
Hydrophone
voltage
UHydr=20logU(rms)dB//1V
-10,9
Table10Receivingvoltageresponse(VR)
DataValueUnitExample
S=SHydrophonedB//µPa/V
119,2
UHydrophone
dB//1V
–10,9
20logrdB17,5
VR(VoltageResponse)dB//1V/µPa
–90,8
VR=-(S+UHydr-20logR)
146
307531/C