Simrad SX90 - INSTALLATION REV C - Test Procedures; Speed Log Interface Test

SimradSX90
• LR40DigitalGyroRepeater
TheLR40DigitalGyroRepeatercanbeprovidedbySimrad
onpartnumber298-078535.Connecttheseriallineto
anyvacantport(TB1-7)intheInterfaceUnitasdescribed
insectionRS-232totheInterfaceUnitonpage200.For
connectionstotheLR40DigitalGyroRepeater,refertothe
LR40InstructionManual.
Relatedtopics
•Coursegyrointerfacesetupandtestonpage136
•RS-232totheInterfaceUnitonpage200
Testprocedures
Observetheindividualtestproceduresforthevariousinterfaces.
Speedloginterfacetest
Thespeedloginformationcanbeprovidedbythefollowing
sensortypes.Tickoffforthetypewhichisconnected.
•
Pulselog(200pulses/nauticalmile)
•
SpeedlogwithRS-232seriallineoutput
•
(D)GPSserialline(RS-232)
Refertotheselectedspeedlogsourceinthefollowingtext.
Relatedtopics
•InterfaceUnitseriallinesonpage197
•Pulsespeedloginterfaceonpage198
Pulselog(200pulsespernauticalmile)
ThepulseloginputshallbeconnectedtoterminalTB8insidethe
InterfaceUnit.Observethefollowingproceduretosetupand
testthepulseloginput.
Thepulselogconnectionandinterfacecircuitislocatedinthe
InterfaceUnit.Anoscilloscopecanbeconnectedtothetest
pointTP33tocheckifthepulselogsignalispresentthrough
thecomparatorIC30(TP34isGND).Ifnot,trytoadjustthe
potentiometerR64.Incaseofnoiseproblems,R64canbe
adjustedfornoiselimitation.
Acircuitdiagramdescribingthisinterfacecanbefoundin
sectionConnectingthespeedlogonpage131.
1AccesstheI/OSetupmenu.
•Toaccessthismenu,seeHowtochangetheinterface
settingsonpage129.
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