EAW DSA250i, DSA230i owner manual CobraNet Audio and Computer Control, Basic CobraNet Diagram

5.2 CobraNet™ Audio and Computer Control

See Appendix 8.6 for details about multiple module wiring configurations.

This section provides details about using the optional CobraNet technology for distribution of audio and computer control signals.

5.2.1 DESCRIPTION

CobraNet is a combination software, hardware, and network protocol that can replace the audio or both the audio and computer connections described in Section 5.1. Digitized audio and computer control is distributed by a CAT- 5 (or better) cable to each module. The network infrastructure must be designed using standard IEEE 802.3u 100BASE-T Fast Ethernet hardware. The network will not function properly using 10BASE-T technology.

DSAi requires that CobraNet be set to use multicast bundles. The DSAPilot Help file details how to set the DSAi bundle and channel number for each DSAi cluster.

NOTE: If using CobraNet audio with EIA-485 computer control, use DSAPilot to configure the CobraNet options to CobraNet for Audio only. This disables the connection from the CobraNet card to the EIA-485 bus, thus preventing a control loop through the CobraNet connections.

5.2.2 COBRANET IS USUALLY DESIRABLE TO USE WHEN

·A star cable configuration is easier to implement for multiple modules

·Audio is provided via CobraNet and computer control via EIA-485

·A high degree of noise immunity is needed for the audio

·Future system expansion is likely

·Long cable runs that permit fiber optic cabling

·Other CobraNet-capable products are used in the same installation

·The number of modules and clusters exceeds 32

·The audio source(s) have digital outputs

					DSA
					LOUDSPEAKERS 5.2.3 ADDITIONAL EQUIPMENT YOU MUST SUPPLY FOR COBRANET
					WITH
					OPTIONAL	·	Module interface:
LINE LEVEL		AUDIO/COMPUTER			CM-1 CARD
AUDIO		INTERFACE					EAW CM-1 CobraNet Interface Card (P/N 0005987)
SOURCE(S)
							for each DSAi Series module and each module within a
							DSAi cluster
						·	Audio/Computer interface:
	PC						Converts signals to CobraNet protocol
			100BASE-T
						·	Ethernet switch or hub:
			NETWORK
				SWITCH			For networking multiple modules over Ethernet

CAT-5

CABLES MAX 328 ft/100 m

Figure 5.2.3 Basic CobraNet Diagram

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