Zte ZXSDR R8978 - EAM;RGPS Interface Cable; External Cable Connection; Figure 3-14 Connection of the CAL Interface Cable

ZXSDRR8978UserManual
Figure3-14ConnectionoftheCALInterfaceCable
3.4.7EAM/RGPSInterfaceCable
Function
Thedrycontact(EAM)interfaceislocatedattheexternallteratthebottomoftheZXSDR
R8978.Itusesaneight-coreroundconnector.ItsupportstheRGPSfunctionsandone
drycontractinputtotransparentlytransmittheexternaldevicestatus.
TheRGPSreceiverislocatedattheGPSreceivingantenna.Installedneartheantenna,
thesatellitecardtransmitstheoutputdigitalsignaltotheclockmaincontrolcardthrough
adifferentialline.BecausedigitalsignaltransmissionisnotaffectedbyRFsignal
attenuation,theremotedistanceislongandgoodreliabilityandmaintainabilityisensured.
Connection
EndAisconnectedtotheEAMinterfaceoftheZXSDRR8978.EndBisconnectedtothe
drycontactoutput/RGPSinterfaceoftheexternaldevice.
3.5ExternalCableConnection
Figure3-15illustratestheexternalcableconnection.
3-14
SJ-20140808143736-001|2014-10-30(R1.1)ZTEProprietaryandCondential