Simrad ST90 - User Interface Overview

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EnvironmentalinspectionoftheTransceiver
Unit
Satisfactoryenvironmentalconditionsareimportanttoensurelongandtrouble-free
operationoftheTransceiverUnit.AnenvironmentalinspectionoftheTransceiverUnit
isrequiredtoverifythequalityofthesonarroom.
Prerequisites
TheST90isinstalledasspeciedintheST90Installationmanual.Youneedthe
followingequipment:
•Thermometer
•Hygrometer
Context
ThesonarroomisthecompartmentinwhichtheTransceiverUnitisinstalled.
Procedure
1Makesurethatthecompartment("sonarroom")iscleananddry.
2Makesurethattheambienttemperatureinthesonarroommeetstheenvironmental
specications.
aMakesurethatthetemperatureinthesonarroomiscontrolledusingasuitable
ventilationsystem.
bRecordthetypeofventilationsystemthatisinstalled.
cMakesurethatthetemperatureinthesonarroomismonitored.
dMeasuretheambienttemperatureinthesonarroomwhentheST90isswitched
off.
eRecordthevalueintheresulttable.
3Makesurethattherelativehumidityinthesonarroommeetstheenvironmental
specications.
aMeasuretherelativehumidityinthesonarroom.
bRecordthevalueintheresulttable.
430minutesaftertheST90hasbeenswitchedonandputtonormaloperation,
measuretheambienttemperatureonemoretime.
Recordthevalueintheresulttable.
530minutesaftertheST90hasbeenswitchedonandputtonormaloperation,
measuretherelativehumidityonemoretime.
Recordthevalueintheresulttable.
6Makesurethatthesonarroom,theST90TransceiverUnitandthemounting
bracketshavenotbeesubjectedtocorrosiveattacks.
SimradST90HarbourAcceptanceTest