Motorola GTR 8000 - Verifying Receiver Performance (Analog Operation)

GTR8000BaseRadio
5.10.4VerifyingReceiverPerformance(AnalogOperation)
Whenandwheretouse:
Usethisproceduretoverifyreceiverperformancebymeasuringthereceiversensitivity(SINAD)forananalog
baseradio.
ThisprocedureusesaninternalSINADinthebaseradio.Ifaeldtechnicianchoosestouseaservice
monitorasanexternalSINADmeter,see“SINADMeasurementProcedure(measuredbyService
Monitor)”withinBaseRadioServiceHelp->ServiceScreens>AlignmentScreens>CarrierSquelch
AlignmentTabintheCSSOnlineHelp.
ProcedureSteps
1ConnecttothetransceivermoduleinCSSthroughanEthernetconnection.See4.4.4ConnectingThroughan
EthernetPortLink,page4-11.
2SelectService→AlignmentScreensfromthemenu.
3Placethebaseradiointoservicemode:
a.Ifthebaseradioisnotalreadyinservicemode,clickChangetoServiceMode.
Stepresult:Aconrmationdialogboxappears.
b.ClickOK.
Stepresult:Thebaseradiobeginsaresetsequencetochangemodes,whichtakesafewminutes.
c.Afterthebaseradioresets,re-opentheAlignmentScreenasdescribedinstep2.
4SelecttheCarrierSquelchAlignmenttab.
5Makethefollowingconnectionstothebaseradio:
a.DisconnecttheBNCantennacableorNconnectorifapreselectorispresentfromtheReceiveAntennaPort.
b.ConnecttheservicemonitorGENporttothebaseradiosAntennaPortwithaBNCconnector.
6Setuptheservicemonitor.
a.For25kHzchannels,setthemodulationto1kHztoneat3kHzdeviation.
b.For12.5kHzchannels,setthemodulationto1kHztoneat1.5kHzdeviation.
c.Settheservicemonitortogenerateatthereceivefrequency.
d.SettheRFlevelaninitialvalueof–80dBm.
7Tomeasure25kHzchannelSINAD,click25kHz.Tomeasure12.5kHzchannelSINAD,click12.5kHz.
8SelecttheSINADmeasurementbox.
5-386871022P86-A-November2012