User manual BIAMP MAXXAM 8 8

[. . . ] AudiaEXPI/O-2 is an input/output expander that accepts two mic/line analog audio inputs, provides two channels of digital audio output via CobraNet, accepts two channels of digital audio input via CobraNet, and provides two mic/line-level analog audio outputs. They can simply add inputs and outputs to a centralized Audia system or extend system boundaries by providing inputs and outputs in remote locations. AudiaEXPI-4, AudiaEXPO-4, and AudiaEXPI/O-2 are represented as explicit CobraNet Input or Output blocks in Audia software for easy inclusion into any system design. All three expanders may also be used to provide additional inputs and outputs to other CobraNet-compliant systems or devices and are Power-over Ethernet (PoE) capable. [. . . ] Bundle numbers are used to determine where digital audio is transmitted and received. Typically, "unicast" bundle numbers (256­65, 279) are used to exchange digital audio between two specific devices. With unicast bundles, each CobraNet device can transmit to as many as 16 other devices within a network (2 bundles per channel x 16 bundles max = 32 channels). With "multicast" bundle numbers (1­255), digital audio can be exchanged with multiple devices. Due to network delay, CobraNet has a limitation of seven (7) "hops" (one-way transmissions) within a network. In order to integrate AudiaEXPO-4 into an Audia system, a CobraNet output block must first be placed into the design layout. Audia units intended to transmit digital audio to the AudiaEXPO-4 must have their CobraNet jacks connected to the same network. Both the AudiaEXPO-4 unit (hardware) and the CobraNet output block (software) must be assigned matching bundle numbers, before digital audio can be successfully exchanged. CobraNet Latency settings must be identical in all devices, system-wide. Also, unicast and multicast bundle numbers can be used to access digital audio from individual or multiple CobraNet output blocks. Similar considerations may apply when using AudiaEXPO-4 with other CobraNet compliant systems or devices. With "multicast" bundle numbers (1­255), digital audio can be exchanged with multiple devices. Due to network delay, CobraNet has a limitation of seven (7) "hops" (one-way transmissions) within a network. In order to integrate AudiaEXPI/O-2 into an Audia system, a CobraNet input/output block must first be placed into the design layout. Audia units intended to transmit digital audio to the AudiaEXPI/O-2 must have their CobraNet jacks connected to the same network. Both the AudiaEXPI/O-2 unit (hardware) and the CobraNet input/output block (software) must be assigned matching bundle numbers, before digital audio can be successfully exchanged. CobraNet Latency settings must be identical in all devices, system-wide. Also, unicast and multicast bundle numbers can be used to access digital audio from individual or multiple CobraNet input/output blocks. Similar considerations may apply when using AudiaEXPI/O-2 with other CobraNet compliant systems or devices. AudiaEXPI-4, AudiaEXPO-4, and AudiaEXPI/O-2 can exchange digital audio directly (outside of a system network) using either a simple "cross-over" CAT5 cable or an Ethernet switch. 6 APPLICATIONS Airport with Central and Local Announcements, plus Background Music This application demonstrates the use of Audia® in a moderately large airport with a central control room and six concourses, each with eight boarding gates. Output of this ducker is in turn fed with equalization to the two distributed speaker systems in the central control room. In each concourse, eight announcement microphones are brought in through individual duckers. [. . . ] These four AudiaEXPO-4 units are physically located in a central computer/recording office. The maximum distance between any Audia unit and an Ethernet switch is 100 meters. Therefore, this system can span up to 300 meters between the equipment closet and the computer/recording office. Additional Ethernet switches, or even fiber-optics, can further extend distances between units on the network. [. . . ]