Transcript Security Systems BU Communication Systems

Security Systems BU Communication Systems
Praesideo Cobranet Interface
LBB4404/00
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Security Systems BU Communication Systems
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
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Security Systems BU Communication Systems
What is Cobranet?
Cobranet technology
 Isochronous
No
data transmission
retransmissions (real-time audio)
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Security Systems BU Communication Systems
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
NCO 2
44+analog
4 digital
channels
channels
Audio Expander
Cobranet
Interface
Audio Expander
Cobranet
interface
4 analog channels
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Security Systems BU Communication Systems
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
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Security Systems BU Communication Systems
Praesideo Cobranet Interface
Cobranet specifications
48
kHz sample rate
16,20
5.33
and 24 bits resolution
latency mode
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Security Systems BU Communication Systems
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
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Security Systems BU Communication Systems
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)
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Security Systems BU Communication Systems
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
Switches



Switch
half-duplex
100Mbps network-wide
data exits all ports regardless
of address



full-duplex
100Mbps in each direction
intelligent forwarding
gives more freedom in network design
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Security Systems BU Communication Systems
Cobranet network
Spanning Tree Protocol
node
node
node
switch
node
switch
node
node
node
node
node
node
switch
node
node
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Security Systems BU Communication Systems
Cobranet network
node
Spanning Tree Protocol
switch
node
switch
switch
node
node
switch
switch
node
switch
node
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Security Systems BU Communication Systems
Cobranet network
node
Spanning Tree Protocol
switch
node
switch
switch
node
node
switch
switch
node
switch
X
STP disables a link to
prevent the ring condition
node
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Security Systems BU Communication Systems
Cobranet network
node
Spanning Tree Protocol
switch
node
switch
X
node
switch
node
switch
node
If a link is broken...
switch
switch
STP disabled link
node
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Security Systems BU Communication Systems
Cobranet network
node
Spanning Tree Protocol
switch
node
switch
X
node
switch
node
switch
node
Broken link...
switch
switch
STP re-enables the link to
route around the failure
node
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Security Systems BU Communication Systems
Cobranet network
node
Trunking
node
switch
node
node
node
node
switch
node
node
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Security Systems BU Communication Systems
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
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Security Systems BU Communication Systems
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
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Security Systems BU Communication Systems
Praesideo / Cobranet System Architecture
Ethernet
Ethernet
NCO
NCO
63 nodes
Cobranet
interface
NCO
63 nodes
Ethernet
Ethernet
Switch
Ethernet
63 nodes
Ethernet
Cobranet
interface
Ethernet
Cobranet
interface
Ethernet
Switch
Ethernet
Switch
Ethernet over glass fibre or CAT5
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Security Systems BU Communication Systems
Praesideo / Cobranet System Architecture
Max. 5 PC
CST per ring
Ethernet
Ethernet
NCO
NCO
63 nodes
Cobranet
interface
NCO
63 nodes
Ethernet
Ethernet
Switch
Ethernet
63 nodes
Ethernet
Cobranet
interface
Ethernet
Cobranet
interface
Ethernet
Switch
Ethernet
Switch
Ethernet over glass fibre or CAT5
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Security Systems BU Communication Systems
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
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Security Systems BU Communication Systems
Cobranet information
Bosch
Peak
Pro
Extranet soon updated with Cobranet information
Audio / Cirrus Logic Website
Sound web, Cobranet forum
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Security Systems BU Communication Systems
© Robert Bosch GmbH reserves all rights even in the event of industrial
property rights. We reserve all rights of disposal such as copying and passing
on to third parties.
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