Simrad ST90 Installation Manual

352
442703/B
7Hoistthetransducerbackuptoitsupperposition.
Result
Foreachtransmitfrequency(inkHz),writedownthemeasurednoiselevels(indB).
Frequency
MaximumAverage
14kHz
19kHz
24kHz
Relatedtopics
Settingtoworksummary,page242
TestingtheST90operationalfunctionality,page345
VerifyingST90operationbymeansoftheBITEfunctionality
ThepurposeoftheBITE(Built-InTestEquipment)dialogboxistoallowon-linetesting
andvericationoftheST90hardwarecomponents.
Prerequisites
TheST90isinstalledasspeciedinthismanual.
•TheST90isturnedon,anditisworkingnormally.
•TheST90isinNormalmode,butTXPowerissettoOfftopreventtransmission.
•Thetransducerisretractedtoitsupperposition.
•Thevesselisberthedoratsea.
Neithertoolsnorinstrumentsarerequired.
Caution
YoumustneversettheST90to"ping"unlessthetransducerissubmergedinwater.
Thetransducermaybedamagedifittransmitsinopenair.
Forthebestpossibleconditionstocompletethetest,theshipmustbe"silent".
•Thewatermustbeasdeepaspossible.Recommendedminimumdepthis100metres.
•Theremustbenoothervesselsinthevicinity.
•Thevesselmustliestillinthewater.
SimradST90InstallationManual

Simrad ST90 Specifications

General

Brand	Simrad
Model	ST90
Category	Sonar
Language	English