EAW DSA230i, DSA250i owner manual 5c Example

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EXAMPLE 3:

Should you be working with a CobraNet Audio source that does not support the serial bridge feature, you can follow this next connection

COBRANET

AUDIO

SOURCE

ETHERNET

SWITCH

scheme. The DSAPilot PC is connected to DSAi module "A" using an EIA-485 link. "A" communicates the data to the other modules over the CobraNet serial bridge through DSAi module "A".

PC

DSA

PILOT

485

CM1

SLink

 

DSA "A"

 

 

PLink

 

485

CM1

SLink

 

DSA "B"

 

 

PLink

 

485

CM1

SLink

 

DSA "C"

 

 

PLink

 

485

CM1

SLink

 

DSA "D"

 

 

PLink

 

Figure 8.6.5c Example 3

EXAMPLE 4:

This is a more complex configuration where both analog and CobraNet digital audio are required to be connected to the modules. It is important that you do not use the link connectors. Doing this would cause a communication loop through the link connector and the CobraNet interface.

Cobranet

 

 

ETHERNET

Audio

 

 

Source

 

 

SWITCH

PC

485

CM1

SLink

DSA

 

 

 

PILOT

 

 

 

DSA "A"

Phoenix

 

Connector

PLink

485

CM1

SLink

DSA "B"

 

Phoenix

 

 

Connector

PLink

 

485

 

CM1

 

SLink

 

 

 

 

 

DSA "C"

Phoenix

 

Connector

PLink

485

 

CM1

 

SLink

 

 

 

 

 

DSA "D"

Phoenix

Connector PLink

Analog

Audio

Souce

Figure 8.6.5d Example 4

8.6.6 AVOIDING COMMUNICATION LOOPS

Communication loops will occur if a computer control message can find more then one path to a DSAi module. The consequence of this is that the network can quickly become overloaded with likely intermittent and/or faulty communication. When determining your system connections, draw it out and see if a loop will be created. Just follow the arrows. Here are some examples to NEVER repeat.

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Contents Page Safety Precautions Read this First Precauciones DE Seguridad LEA Esto Primero EC Declaration of Conformity Contents Page Introduction ContentsUnpacking Shipping DamageChapter Audio Signal ConnectionReturning Products to EAW Quick StartDaisy Chaining Audio and Computer Signal Between Modules AC Mains InstallationComputer Control Connection Signal End / Power End Physical InstallationSignal Processing DescriptionSystem Overview 4 DSAi Block Diagrams FeaturesElectronic Engineering Design Applications4a Angled Radiation Pattern Low Frequency Performance DSAPilotComparison to Traditional Products Designing DSAi SystemsAnalog Audio and EIA-485 Computer Control Installation2 Audio a & Audio B Recommended Conductor Gauge AWG to 18 AWG / 0.2 mm to 1 mm CobraNet Audio and Computer Control 3 Basic CobraNet DiagramCabling Fault Detect Supervisory Monitoring 3a Single DSAi Fault on 2 PowerCon Plug AC Mains Power Connection4 Fuse Grounding2 Signal End / Power End 3 DSAi Cluster Configurations 4a Wall Mounted 6 Mounting Height Lift the enclosure onto the structure-mounted Wall Brackets Initial Set-Up Acoustical InstallationOperational Functions OperationSignal Monitoring Normal Operation Operational Check ListOperational ‘DOS’ and ‘DONTS’ Warranty Maintenance and ServiceService Items How to Contact EAWAppendices Inspections and MaintenanceDSA250i Only TroubleshootingEIA-485 CobraNet EIA-485 Network NotesSupport For CobraNet Support For EthernetDSAi Connections 3a EIA-485 Example 5c Example One path was to the EIA-485 port. So when B responds 6c Example Right Side Back Mechanical DrawingsRight Side Wall Bracket Full Scale