Simrad ST90 - Page 39

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Result
Requirements
Results
Themaximumnumberofunserviceableelementsis3.
Dateandsignature:
Furtherrequirements
Ifthenoiselevelishigherthanspecied,youmustcheckthereason(s)forthis.
•CheckthegroundingoftheTransceiverUnit.
•Verifythatotherelectricequipmentand/ormachineryonboard,suchascooling
systems,hydraulicpumps,electricmotorsetc,donotinuenceonthenoisereading.
Switchoffasmuchmachineryaspossible,especiallyelectricalmotors.
•Checkforinterferencefromotherhydroacousticsystems.
•Checkforenvironmentalnoise,suchasothervesselsinthevicinityoranimallife.
TestingtheST90operationalfunctionality