Terminology CobraNet Interface CM1 Terminology CobraNet Interface HW and SW supplied by Peak Audio (CM1) Bosch CobraNet Interface (CobraNet device) Device that contains a CobraNet interfaces Conductor CobraNet interface provides Master clock and transmission arbitration for the network. There can only be one conductor!!

Terminology Audio Channel Bundle Single audio channel, CM1 Terminology Audio Channel Single audio channel, 48kHz sample rate, 16-20-24 bit resolution Bundle Can carry 0-8 audio channels Bundles are numbered from 1 – 65279 A bundle has a single transmitter

Terminology Multicast Bundle Unicast Bundle CM1 Terminology Multicast Bundle Point to multi point connection Bundle 1 – 255 are multicast bundles Audio is always transmitted, even when no one is receiving Unicast Bundle Point to point connection Bundle 256 – 65279 are unicast bundles Audio is only transmitted if a receiver is connected to the same bundle

LBB 4404/00 CobraNet interface Block diagram Ethernet CobraNet transmitters CM1 CobraNet channels CobraNet bundles Audio channels 1 32 1 8 1 28 AO 1 AO 4 AI 4 AI 1 4 # nn Fixed routing Praesideo node Praesideo system bus CobraNet receivers LBB 4404/00 CobraNet interface

LBB 4404/00 CobraNet interface Block diagram Ethernet CobraNet transmitters LBB 4404/00 CobraNet interface CM1 CobraNet channels CobraNet bundles CobraNet receivers Audio channels 1 32 1 8 1 28 CobraNet channels CobraNet bundles 1 28 Audio channels AO 1 AO 4 AI 4 AI 1 4 1 8 1 32 # nn # nn 4 AI 1 AI 4 AO 4 AO 1 Fixed routing Fixed routing Praesideo node Praesideo system bus Praesideo node CM1 Praesideo system bus CobraNet transmitters LBB 4404/00 CobraNet interface CobraNet receivers

Basics D/A A/D Network D/A A/D Network Audio Expander Audio Expander Screened microphone cables

Basics Unicast Bundles Network Network CobraNet interface SRC Network CobraNet interface 44.1 kHz 48 kHz SRC Network CobraNet interface 44.1 kHz 48 kHz CobraNet interface CobraNet interface Unicast Bundles Ethernet

Basics Network Network CobraNet interface CobraNet interface SRC Network CobraNet interface 44.1 kHz 48 kHz SRC Network CobraNet interface 44.1 kHz 48 kHz CobraNet interface CobraNet interface CAT5 (Cross cable)

Basics D/A A/D Network D/A A/D Network D/A A/D Network Audio Expander Screened microphone cables

Unicast & Multicast Bundles Basics SRC Network CobraNet interface 44.1 kHz 48 kHz SRC Network CobraNet interface 44.1 kHz 48 kHz SRC Network CobraNet interface 44.1 kHz 48 kHz CobraNet interface CobraNet interface Ethernet Unicast & Multicast Bundles

Basics Switch Network Network Network CobraNet interface SRC Network CobraNet interface 44.1 kHz 48 kHz SRC Network CobraNet interface 44.1 kHz 48 kHz SRC Network CobraNet interface 44.1 kHz 48 kHz CobraNet interface CobraNet interface CAT5 Switch

OK Network Set-up Direct connection Cross Cable Full duplex Transmit and receive at the same time No Collisions CIN CIN Cross cable OK

Network Set-up Hub Transmits data to all ports CIN CIN Hub CIN CIN

NO !! Network Set-up Hub Transmits data to all ports CIN CIN Half duplex Cannot transmit and receive at the same time Collision transmission stops Hub CIN CIN NO !!

OK Network Set-up Switch Can route data from one port to an other port Multiple paths possible Remembers the communication path CIN CIN Switch CIN CIN OK

OK Network Set-up Switch Full duplex Transmit and receive at the same time No Collision CIN CIN Switch CIN CIN CIN Switch OK

Unicast Unicast Point to point connection Transmitter and receiver must be available No receiver, no transmission CIN CIN Switch CIN CIN CIN CIN Switch CIN CIN

Multicast Multicast Point to multipoint connection Transmitter will always transmit CIN CIN Switch CIN CIN CIN CIN Switch CIN CIN

Network redundancy: Link aggregation (trunking) Redundant, parallel, Ethernet link between switches Increase bandwidth 100Mb + 100Mb No switch over delay if one link fails Switch Switch Loop No Link Aggregation Switch 100Mbit With Link Aggregation

Network redundancy: Spanning Tree Protocol STP Redundancy for the Ethernet ring Restoring the link takes time (1 – 30 Sec) CIN Switch Loop Switch CIN Switch CIN Switch CIN

Network redundancy: Meshing (HP only) Combination of Link aggregation and STP Redundancy for the Ethernet links Fast restoring Increased bandwidth Switch Switch Switch Switch Switch Switch

CobraNet redundancy Dual link Activates the second Ethernet connection on the CobraNet interface if the first Ethernet connection is not working properly. This way a failing switch can have a back-up

CobraNet redundancy Dual link CIN Link activity Redundant connection Off Switch In use Conductor Redundant Ethernet ring

CobraNet redundancy Dual link CIN Redundant connection Link activity In use Conductor Off Redundant switch Switch Switch Redundant Ethernet ring

CobraNet redundancy Dual link Activates the second Ethernet connection on the CobraNet interface if the first Ethernet connection is not working properly. This way a failing switch can have a back-up Pairing Interface Devices Multiple CobraNet interfaces transmitting the same audio signal to the same channel. The conductor will allow only one. If this one fails an other is allowed to transmit. Multiple CobraNet interfaces can receiving the same audio channel Unicast : only one can receive, others are back-up Multicast : all can receive

CobraNet redundancy Pairing Same audio signal in CIN Link activity Off In use Conductor Off Switch CIN Redundant Ethernet ring Same audio signal out

CobraNet redundancy Pairing Same audio signal in CIN CIN Link activity In use Conductor Off Switch CIN Redundant Ethernet ring Switch Same audio signal out CIN

CobraNet redundancy Pairing Same audio signal in CIN CIN Link activity In use Conductor Off Switch Switch CIN Redundant Ethernet ring Switch Same audio signal out CIN Switch

CobraNet redundancy Dual link Activates the second Ethernet connection on the CobraNet interface if the first Ethernet connection is not working properly. This way a failing switch can have a back-up Pairing Interface Devices Multiple CobraNet interfaces transmitting the same audio signal to the same channel. The conductor will allow only one. If this one fails an other is allowed to transmit. Multiple CobraNet interfaces can receiving the same audio channel Unicast : only one can receive, others are back-up Multicast : all can receive Buddy link Two CobraNet Interfaces (CM1) in one unit. Not possible with Praesideo