3.3. AES15-1991 (ANSI S4.49-1991)

Communications interface (PA-422)

Description

This AES Standard specifies the electrical characteristics of a balanced-voltage circuit for the interchange of serial binary signals for the control of sound-reinforcement systems. It provides for interchange among data terminal equipment (DTE), that is, computers and microprocessors, and data circuit-terminating equipment (DCE). PA-422 is a mnemonic, signifying professional audio implementation of Electronics Industries Association EIA-422-A. Device control language is provided in an annex.

Contents

• Scope
  
• Applicability
  
• Electrical characteristics
  
• Configuration
  
• Driver
  
• Communications settings
  
• Interface connections
  
• Communication
  
• Intelligent devices
  
• Nonintelligent devices
  
• Interconnecting cable characteristics
  
• Cable type
  
• Cable length
  
• References

• 3.3.1 Device control language for controlling communication among professional sound products

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