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4 (High Voltage) D/A Outputs (+20 VDC to +80 VDC)

The DA4 module features 4 high-voltage D/A output channels with a maximum full-scale range of ±80 VDC at ±10 mA (max).

  • High-quality D/A conversion, 16-Bit/channel
  • Designed to meet the testing requirements of IEC 801-2 Level 2
  • Continuous background BIT
  • Automatic shutdown protection with the results displayed in a status word
  • Extended D/A FIFO buffering capabilities

  • Resolution: 16-bit/channel for voltage command mode.
  • Output Format: Single-ended
  • Output Range: ±20 to ±80 VDC (unipolar or bipolar); ranges are programmable in pairs (i.e. one register controls the range for channels 1 & 2 and another register controls the range for channels 3 & 4).
  • Output Impedance: < 1 Ω
  • System Protection: Output is set to 0 V at reset or Power-On.
  • Linearity Error: ±0.15% FS range over temperature
  • Offset Error: ±100 mV or ±100 µA
  • Gain Error: ±0.08% FS range
  • Settling Time: 350 µs (max.)
  • Data Buffer: See Operations Manual for details.
  • Load: Can drive a capacitive load of 0.1 µF, 10 mA/Ch max. (Source or Sink). Short circuit protected. When current exceeds 10 mA for any channel, for > 50 ms, that channel is set to 0 V and a flag is set.
  • Update Rate: 5 µs per channel
  • ESD Protection: Designed to meet the testing requirements of IEC 801-2 Level 2. (4 kV transient with a peak current of 7.5 A and a time constant of approximately 60 ns).
  • Power: 5 VDC @ 300 mA typical (est.); ±12 VDC @ 200 mA (est. quiescent) Add 2 mA per 1 mA load per channel
  • Ground: Channel pair returns (Ch-Lo (-)) are common, but are isolated (250 Vpeak) from system ground.
  • Weight: 1.5 oz. (42 g)
Block Diagram

(Click diagram to enlarge)

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NAI’s Configurable Open Systems Architecture™ (COSA®) offers a choice of over 70 smart I/O, communication, and Ethernet switch functions, providing the highest packaging density and greatest flexibility of any multifunction I/O board in the industry. Preexisting, fully-tested functions can be combined quickly and easily in an unlimited number of ways. Each I/O function has dedicated processing, unburdening the system Single Board Computer (SBC) from unnecessary data management overhead.

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