Motorola GTR 8000 - Figure 5-19 Verifying UHF Duplexer Isolation - Connecting Test Equipment; How to Verify UHF Duplexer Insertion Loss; Verifying UHF Duplexer Isolation

5.9.5.6.1HowToVerifyUHFDuplexerInsertionLoss
5.9.5.6.1HowToVerifyUHFDuplexerInsertionLoss
ProcedureSteps
1ConnecttestequipmentasshowninFigure5-17.
2ObserveandnotethelevelindBmasshownonthemillivoltmeter.
3ConnecttheduplexercableassemblyandtestequipmenttotheduplexerasshowninFigure5-18.
4ObserveandnotethelevelindBmasshownonthemillivoltmeter.
5Subtracttheabsolutenumbernotedinstep2fromthenumbernotedinstep4.Thedifferenceshouldbeless
than1.3dBtomeetspecicationforInsertionLoss.
6Repeatsteps1through5forLow-Pass/High-Notchcavitieswiththefollowingexceptions:
a.SetservicemonitortoRxorTxfrequency,whicheverisLOWER
b.ConnectmillivoltmetertoLowPassduplexerinput(cavity#1)
c.Connectterminatortocavity#6.
5.9.5.7VerifyingUHFDuplexerIsolation
Figure5-19VerifyingUHFDuplexerIsolation—ConnectingTestEquipment
6871022P86-A-November20125-31