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The CAS-108D is an 8-channel plug-in signal conditioning board for use in Curtiss-Wright’s EDAU-20XX and CDAU-20XX products. The board is intended for applications that require significant signal conditioning flexibility and simultaneous sampling capability. The board provides programmable digital presample filtering and user-programmable gain. The conditioned analog signal is digitized at up to 16-bit resolution for transmission in the system PCM output format.

Key Features

  • 8 channels per card
  • Simultaneous sampling capability
  • Programmable presample filtering
    • 32 Tap Finite-Impulse Response (FIR) filters
    • Approximates 12-pole Butterworth filter
    • Stopband attenuation of 85db
    • Analog anti-aliasing filter
    • Automatic adaptive filter
  • Programmable input range
    • >10,000 settings from ±11,000 to ±137pC full scale
  • Programmable offset
  • >1,000 Megohms input impedance (power on)
  • ±0.5% system accuracy
  • ±35 VDC overvoltage protection
  • Compatible with WDAU-20XX operating to 20Mbps
  • Microsoft Windows application software included


  • Flight test instrumentation
  • Factory automation and process control
  • Piezoelectric transducers, accelerometers, microphones
  • Research measurements, experiments, and constant current
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