Attero Tech SquawkBox Manual do utilizador - Página 18

Procurar online ou descarregar pdf Manual do utilizador para Acessórios Attero Tech SquawkBox. Attero Tech SquawkBox 20 páginas.

SquawkBox

User Manual

APPENDIX A – Introduction to CobraNet

CobraNet is an audio networking technology for delivery and distribution of real-time, high quality, uncompressed digital

audio using a standard Ethernet network. It is implemented using a combination of hardware, firmware, and the CobraNet

protocol.

Unlike other audio networking or distribution technologies, CobraNet is a true network and exists on standard Ethernet

networks using standard Ethernet hardware. Since it is a true network, audio routing is highly flexible between network

nodes and can be used in a variety of audio distribution applications.

In addition to the high degree of routing flexibility that CobraNet provides, the technology also incorporates the ability to

monitor and control CobraNet devices remotely. This is a key feature that is highly important in fixed installation

applications where the audio distribution equipment may not be readily accessible. All CobraNet devices on the network can

be controlled and monitored from a central location by sending control commands and monitoring device specific

parameters.

CobraNet provides this capability by implementing Simple Network Management Protocol (SNMP). SNMP is a standard

protocol typically used for monitoring network devices such as Ethernet switches. In the case of CobraNet, it allows users to

communicate with any CobraNet device using standard SNMP tools or a customized user interface designed specifically for

CobraNet, such as Attero Tech's Control Center application.

The figure above represents the types of data that coexist on a CobraNet network.

Before a CobraNet system can be configured, it is important to first understand how CobraNet distributes audio between

devices.

Audio is sent in "bundles" on a CobraNet system. Each bundle is capable of holding up to 8 logical audio channels. Every

CobraNet device has a number of bundle transmitters and bundle receivers. These transmitters and receivers are the

mechanism used to send and receive bundles between devices.

For a transmitted bundle, audio may be sourced either directly from the local audio inputs of the device or from internal

audio via the on-board DSP

, but not both simultaneously. Internal audio from the onboard DSP could have originally been

sourced from the local device inputs, sent from another CobraNet device or even generated by the DSP itself. Combinations

of the local or internal audio may exist within a bundle in any order. Additionally, a single audio source in a device may be

used multiple times in a single transmitter bundle or across multiple transmitter bundles.

For a received bundle, the received network audio may be routed directly to the device's local outputs, the internal DSP

simply ignored.

Once the contents of a bundle have been decided, the next step is to pass the bundle to another CobraNet device. To do

this, every CobraNet device has up to 4 bundle transmitters. Each bundle transmitter has a transmit mode that must first be

selected. This affects how many devices may receive that particular bundle at a time.

Not available on all devices – CS496xxx devices only

Attero Tech LLC 2014

Page A-1

614-00007-04