QSC Audio S series user manual Network Design Considerations Repeater Networks

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Network Design Considerations: Repeater Networks

REPEATER NETWORKS

•RAVE supports operation on network repeaters. These repeaters should be 100 Mbps class II devices. Collisions are prevented through CobraNet’s propri- etary “order persistent” media access scheme. RAVE invokes this access scheme by auto-sensing its link partner (network hardware). In order to reliably connect to a network repeater, the class II device should not support auto-negotiation or 10 Mbps operation.

All bundle distribution is multicast on network repeat- ers. Additionally, since repeaters provide a half-duplex connection to a shared media network, there is a limit of 8 bundles per LAN. This translates to a maximum of 64 audio channels per 100 Mbps LAN. A repeater network must also be dedicated to CobraNet communications only. Non-CobraNet data should not be directly connected to the same network repeater. However, RAVE does pro- vide a means to bridge serial data onto Ethernet via its RS-232 interface. As with CobraNet audio on repeater ports, serial data transmissions are available at all RS- 232 ports.

Sample repeater network using Ethernet hubs with media conversion

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Contents Rave Explication DES Symboles Graphiques Explanation of Graphical SymbolsErklärung DER Graphischen Symbole Table of Contents Introduction Overview Introduction Illustration of Rave units Introduction Glossary Introduction Glossary Introduction How It Works Introduction How It Works OutsIntroduction Channel Routing Channel RoutingRequired tools #2 Phillips screwdriver Input Level Sensitivity Rave 161s-24 and 188s-24 only Installation Rack Mounting Connections 100BASE-TX EthernetRack Mounting ALL Models Ethernet Connection ALL ModelsConnections Analog Audio Inputs/Outputs Rave 160/161/188 Analog Audio ConnectionsConnections Digital Audio Inputs/Outputs Rave 80/81/88 Digital Audio ConnectionsFuses AC PowerSLAVE/SYNC Input Redundant Configuration RS-232 PortSynchronizing to AES/EBU Synchronizing to AES/EBU Operation Network Activity Status Indicators Status IndicatorsTx Error Audio Signal Level Indicators Operation Audio Signal Level IndicatorsAudio Metering Bundle Assignment Error ReportingBundle Activity Program and Software Kill Operation Program/Software Kill, RoutingRouting Operation Routing Switched Networks Network Design Considerations Switched Networks Network Design Considerations Repeater Networks Repeater NetworksSpecifications GeneralRear Panel Connections Audio Buffering Ethernet Cabling AppendixRS-232 Port Information Appendix Resources Network Hardware Manufacturers CAT-5 UTP ManufacturersHow to Contact QSC Audio Products Product Warranty