Simrad ST90 - Page 360

358
442703/B
5SelectProcessortoopenthepage.
6OpentheElementBITE(ElementBuilt-InTestEquipment)dialogbox.
aSelectElementBITEtoopenthedialogbox.
bSelecttheB-Scantabtoopenthepage.
cSelectElementamplitude.
7Testthereceiverperformance.
aSetStartsampleto5000.
bSetSamplerangeto10000.
cLookatthepatternintheB-Scanpresentation,andcomparethemwiththe
exampleprovided.
ThisscreencaptureshowstheB-Scanpatternwhiletestingthereceiverin
thenearrange.
Todetectunserviceabletransducerelementsand/ortransceiverboards,youmust
comparetherectangles.WhenoperatingtheST90inport,thecolourswillbeless
homogeneousduetotheenvironmentalnoiseandtheshallowdepth.Duringnormal
operationatseathecolourswillbehomogeneous.
•Ifasingleelementis"dead"(notransmit,noreceive),therectangleiseasily
spottedbecauseitscolourisblack.
•Ifasingleelementisreceiving,butnottransmitting,therectangleisnormally
presentedinlightershadesofblue.
•Ifatransceiverboardis"dead"(notransmit,noreceive),allthetransducer
elementsconnectedtotheboardareeasilyspottedbecausetheyareallblack.
8Testthetransmitterperformance.
aSetTxPowertoMaximum.
SimradST90InstallationManual