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The CVS-101, -102, and -104 are 1, 2, and 4 channel voice encoder boards for use in Curtiss-Wright’s EDAU-20XX or CDAU-20XX series products. The boards accept voltages from amplified microphones and encodes these levels, using the Continuously Variable Slope Delta (CVSD) modulation technique, into data words for transmission in the system PCM output format.

Key Features

  • Voice conditioner boards, 1, 2, or 4 channel versions
  • All-digital CVSD encoding
    • Programmable bits/word
    • Programmable sample rate
  • Compression/transmission over low bandwidth systems
  • Front-end flexibility and compatibility
    • 5, 10, 20, or 40 Volt microphone systems
  • Bandpass filtering
  • EDAU-2000 and CDAU-2000 compatible
  • Meets IRIG-106-96, Chapter 5
  • Microsoft Windows application software included


  • Flight test instrumentation
  • Cockpit voice, microphone systems
  • Voice I/O (storage) in data processing
  • Telecommunications
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