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The WSR-120A is a high-speed overhead card for use in the WDAU-20XX product family. The card enables the WDAU to operate as a wideband, stand-alone data acquisition unit with maximum bit rates up to 20 Mbps. The system works with I/O cards that are compatible with high-speed operation. The unit can also simultaneously operate as a CAIS remote slave unit.

The WSR-120A can be used along with the optional WSR-120D card in the same WDAU chassis to provide operation as a CAIS remote slave unit for programming, data selection and synchronization, in addition to stand-alone operation. The WSR-120A also provides IRIG-B time code capability to the WDAU.

Key Features

  • Operates as the PCM unit controller for a wideband acquisition unit operating at up to 20 Mbps
  • Contains non-volatile format memory with programmable simultaneous sample, frame, bits per word, PCM code, and bit rate
  • Provides the fundamental system sampling rate up to 1.25 MSPS
  • Supports calibration, and system audit
  • RS232/422/485 interface port for format loading, programming, and data monitoring
  • Allows for the optional WSR-120D daughter card for CAIS programming, system audit, calibration signals, simultaneous sample, and data selection from the WSR-120A PCM output
  • Converted data formatted into multiple identical RS-422 serial outputs


  • Stand-alone data acquisition
  • Distributed systems
  • CAIS applications
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