Kongsberg Simrad ST90 - Page 25

442728/B
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aAtthebottomofthedisplaypresentation,selectBowUppresentationmode,and
activatetheHorizontalview.
bOntheMainmenu:
1SetRangeto1500m.
2SetGainto20.(TheGainsettinghasnoeffectonthenoisemeasurement.)
cOntheOperationmenu:
1SetOperationtoNormal.
2SetTxPowertoOff.
dOntheActivemenu:
1SetTVG(TimeV ariableGain)to0logR.
2SetPing-PingFiltertoOff.
3SetPulseTypetoCWMedium.
4SetFrequencytothestartfrequency:
5SetHorizontalTXSectortoOmni.
6SetVerticalTXSectortoNormal.
7SetAGC(AutomaticGainControl)toOff.
8SetRCG(ReverberationControlledGain)to0(zero).
9SetNoiseFiltertoOff.
eOntheSetupmenu:SelectDiagnosticstoopenthedialogbox.
fSelectNoisetoopenthepage.
5SelectStartNoiseMeasurements.
aReadthenoisevaluefromthenoisecircle.
Usethemeanvalueofthereadoutsat0
degrees(straightup).
bReadtheaveragenoisevalue.
cReadthemaximumnoisevalue.
dRecordthevaluesintheresulttable.
eRepeatforselectedfrequencies.
fRecordthefrequenciesandthemeasured
valuesintheresulttable.
6Ifrelevant:Connectthedummyloadtothe
transceiveroutput.
Testprocedures