Praesideo Cobranet Interface LBB4404/00

What is Cobranet? Developed by Peak Audio, CobraNet™ is the industry's leading technology for distributing uncompressed real-time digital audio over a Fast Ethernet network. Advantages: Use of “standard” multi-vendor network (ethernet) and protocol (cobranet) Complies to structured cabling principles using Cat5 and GOF Long line transmission using GOF Provides open audio interface to mix with other Cobranet products and systems

What is Cobranet? Cobranet technology Isochronous data transmission No retransmissions (real-time audio)

Praesideo Cobranet Interface Links 4 Praesideo audio input channels and 4 Praesideo audio output channels to Cobranet Functionality is similar as a Praesideo Audio Expander NCO 1 Cobranet Interface NCO 2 Cobranet interface 4 + 4 digital channels NCO 1 Audio Expander NCO 2 Audio Expander 4 analog channels 4 analog channels

Praesideo Cobranet Interface 19”-Praesideo cabinet 2 Ethernet connections (Cobranet) Redundant ethernet connection 2 MOST system network connections (Praesideo) VU meter reading on display 8 control inputs 5 control outputs 1 headphone output

Praesideo Cobranet Interface Cobranet specifications 48 kHz sample rate 16,20 and 24 bits resolution 5.33 latency mode

Praesideo Cobranet Interface Cobranet is using a fixed peer to peer or multicast routing after configuration Audio routing is configured via dedicated PC configuration tools and the Cobranet routing is fixed afterwards Praesideo routing to a Cobranet Interface is still dynamic

Praesideo Cobranet Interface No control functions are transferred via Cobranet Praesideo Open Interface is needed for control functions via Ethernet (TCP/IP), using a separate Ethernet switch Control is only to a Praesideo NCO, not by the NCO The NCO is an Open Interface slave and a PC Call station can be the master (for multiple slaves)

Cobranet network A good Ethernet network is essential for Cobranet Todays Ethernet variations 10 Mbps Ethernet (not suitable for Cobranet) 100 Mbps Fast Ethernet 1000 Mbps Gigabit Ethernet Use (managed) switches no hubs Hubs half-duplex 100Mbps network-wide data exits all ports regardless of address Switches full-duplex 100Mbps in each direction intelligent forwarding Switch gives more freedom in network design

Cobranet network Spanning Tree Protocol

Cobranet network Spanning Tree Protocol

X Cobranet network Spanning Tree Protocol node Spanning Tree Protocol switch node switch switch node node switch switch node X switch STP disables a link to prevent the ring condition node

X Cobranet network Spanning Tree Protocol If a link is broken... node Spanning Tree Protocol switch node switch switch node X If a link is broken... node switch switch node STP disabled link switch node

X Cobranet network Spanning Tree Protocol Broken link... node Spanning Tree Protocol switch node switch switch node X Broken link... node switch switch node switch STP re-enables the link to route around the failure node

Cobranet network Trunking

Cobranet network Distances all depends on Ethernet limitations and good network design and used equipment like switches and cabling CAT5 cabling Unshielded twisted pair Fast Ethernet distance limitation is max 100 meter Multimode glass fiber Multiple paths through the fiber Fast Ethernet (100Base-FX) distance limitation is max 2000 meter 62.5μm Core 125μm Cladding

Cobranet network Distances all depends on good Ethernet network design and used equipment like switches and cabling Single mode glass fiber Single path through the fiber No Ethernet standard for Single mode fiber 8/125μm is typical Distance limitation depending on on used equipment like switches

Praesideo / Cobranet System Architecture Ethernet Ethernet Ethernet NCO NCO NCO 63 nodes 63 nodes 63 nodes Ethernet Ethernet Ethernet Cobranet interface Cobranet interface Cobranet interface Ethernet Switch Ethernet Switch Ethernet Switch Ethernet over glass fibre or CAT5

Praesideo / Cobranet System Architecture NCO Cobranet interface 63 nodes Ethernet Switch Ethernet over glass fibre or CAT5 Ethernet Max. 5 PC CST per ring

Praesideo / Cobranet System Architecture Design rules Don’t exceed ethernet available bandwidth Be conservative No more than 16 bundles over a 100Mbps link 64 channels total over a half-duplex link 64 channels each direction over a full-duplex link Don’t exceed distance limitations Max 7 switch hops No loops without Spanning Tree or Meshing capable switches Observe hop limitations

Cobranet information Bosch Extranet soon updated with Cobranet information Peak Audio / Cirrus Logic Website Pro Sound web, Cobranet forum

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