442729/A
39
Result
Requirements
Results
Themaximumnumberofunserviceableelementsis3.
Dateandsignature:
Furtherrequirements
Ifthenoiselevelishigherthanspecied,youmustcheckthereason(s)forthis.
•CheckthegroundingoftheTransceiverUnit.
•Verifythatotherelectricequipmentand/ormachineryonboard,suchascooling
systems,hydraulicpumps,electricmotorsetc,donotinuenceonthenoisereading.
Switchoffasmuchmachineryaspossible,especiallyelectricalmotors.
•Checkforinterferencefromotherhydroacousticsystems.
•Checkforenvironmentalnoise,suchasothervesselsinthevicinityoranimallife.
TestingtheST90operationalfunctionality