Motorola GTR 8000 - How to Ground Base Radio;Receiver; Connections - Rear (Integrated Voice and Data); Figure 3-7 Rack Grounding

3.4.4.1HowtoGroundBaseRadio/Receiver
Whenrackinstallationshaveaprimaryrackandoneormoreexpansionracks,alltheseracksmustbeconnectedto
thesameSubSystemGroundBusBar(SSGB)(andnootherrackconnectedtotheSSGB).Thisistoensuresurge
eventsdonotproducegroundpotentialdifferencesthatwillaffectsignalsbetweentheracks.
Thebaseradio/receiverbackplanehasadoublelugwithtwolocknutsontherearpanelwherethegroundwire
connectstothebaseradiobackplaneononeend,andtotherackgroundingbarontheother.Therackgroundingbar
isconnectedtothemastergroundbusbar.
Tousethegroundinglugs,youneedalengthof#6AWGwirewithUL-listedringlugsonbothends.Thiswire
isshippedwiththebaseradio.
Figure3-7RackGrounding
3.4.4.1HowtoGroundBaseRadio/Receiver
ProcedureSteps
1Takethegroundwirealreadyattachedtothetwogroundinglugsattherearofthebaseradio/receiver,and
connecttheotherendtotherackgroundingbar.
2Tightenthegroundlocknutto60inch-pounds(6.94newton-meters).
3.4.5Connections–Rear(IntegratedVoiceandData)
Thebaseradio/receiverconnectstoasiteLANswitchportforthischannelandtothetransmitandreceivepaths.
6871022P86-A-November20123-23