Bosch PRAESIDEO LBB4404/00 CobraNet Interface

• Four CobraNetTM audio inputs
• Four CobraNetTM audio outputs
• Eight supervised control inputs and five control outputs
• Redundant Praesideo network connection
• Redundant CobraNetTM network connection

CobraNetTM, developed by Peak Audio, is a network protocol for real-time uncompressed digital audio distribution over industry standard 100Base-T Ethernet networks. Typical applications are room coupling and audio distribution over long distances. CobraNetTM audio channels can be configured as inputs to a Praesideo system, where they can be routed permanently or conditionally to any of the zones or audio outputs. The routing conditions are configured using the configuration software. Calls and background music (BGM) sources can be routed to CobraNetTM channels. Digital audio data is directly converted between an audio system and CobraNetTM, with no other audio processing than sample rate conversion. Control inputs and outputs are provided for external interfacing. The equipment can be used free-standing (tabletop) or in a 19” rack. CobraNetTM is a registered trademark of Peak Audio, a Division of Cirrus Logic, Inc.

Functions
The Praesideo CobraNetTM Interface can simultaneously interface up to four digital audio channels from CobraNetTM into an audio system and up to four audio channels from an audio system into a CobraNetTM network. This includes converting between the 44.1 kHz sample rate used by Praesideo, and the 48 kHz sample rate that CobraNetTM uses, as well as conserving volume levels. It can also route audio channels between itself and other CobraNetTM Interfaces, in the same or in other audio system networks, or to third party CobraNetTM units. Only
audio channels are routed via the interface, not control data. This means that if units are used to link multiple systems, a PC master must always access the network controllers through their open interfaces for control purposes.
The eight control inputs are freely programmable for system actions, and priorities can be assigned to these
inputs. Five control outputs are freely programmable for faults and call-related actions. Control inputs can also be programmed for momentary or toggle operation using the configuration software. Each control input has the ability to monitor the attached line for open and short-circuits. The 2 x 16-character display and the rotary control enable local status enquiries. The display shows the VU-meter reading when the audio monitoring mode is active. Audio can be monitored by headphone. The interface supports redundant network cabling of both an audio system and CobraNetTM networks. It gets its power from the network controller via the network cable. The unit is self monitoring and continually reports its status to the network controller.

Controls and indicators

• 2 x 16 character LCD status display
• Rotary/push control for menu control and headphone volume

Interconnections

• Two optical network connections
• Two RJ45 Ethernet connectors for the CobraNet™
• Eight control inputs to enable audio inputs and audio outputs
• Five control outputs to indicate channel engaged state
• One headphone output 3.5 mm (0.14 in) stereo