V285
VXI 16-Bit DAC Arbitrary Waveform Generator Module

The V285 is a single-width, C-size, register-based, VXIbus module that is a 16-bit, precision, arbitrary waveform generator. It includes a DAC per channel and is capable of update rates to 500 kHz per channel. Each analog channel includes a 4-pole, Bessel filter with programmable cutoff frequencies of 10 kHz and 100 kHz. A 16-bit ADC/multiplexer allows all channels to be automatically tested and calibrated.

The V285 arbitrary waveform generator optionally includes either a 1 MB or 4 MB RAM memory. This memory may be configured either for multibuffer operation, in which data is continuously updated via the VXIbus, or it may be preloaded with waveforms. These waveforms may be continuously output (in recirculate mode) or output once per trigger (in one-shot mode).

VXI 16-Bit DAC Arbitrary Waveform Generator Module: V285

V285 Data Sheet

Supporting Software

Supporting Chassis

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The V285 arbitrary waveform generator can also be loaded one sample at a time via a set of addressable VXIbus registers (one per DAC channel). The register contents are clocked into the DAC synchronously with the sample clock.

Alternatively, the V285 arbitrary waveform generator can accept the waveform data over the Digi-bus. Digi-bus data is selected from a "data frame" and stored in a set of holding registers, one for each DAC channel. At the next sample clock or start of Digi-bus frame, the data is strobed from the registers into the respective DACs. This allows the V285 data to be accepted directly from a DSP module.

The V285 arbitrary waveform generator employs a sample clock to simultaneously update all channels. This clock can be selected to be an internal, crystal-controlled clock; a VXI trigger line; a Digi-bus start-of-frame; or an external, front-panel, user-supplied clock.

The V285 supports both static and dynamic configuration. It may be accessed using A32/A16, D32/D16 data transfers.

VXI Module Features

  • 16-Bit DAC per Channel
  • 8 or 16 Channels
  • Built-In Calibration and Self-Test
  • 10 kHz or 100 kHz Programmable 4-Pole Bessel Filter per Channel
  • 1 or 4 MB Waveform Memory Option with Single Shot or
    Continuous Modes
  • Simultaneous Update of all Channels
  • Programmable Clock from 100 Hz to 500 kHz in
    1, 2, 5,.. Progression
  • Optional Digi-bus Interface
  • Arbitrary Waveform Generation Capability using LabVIEW

VXI Module Ordering Information

V285 Products and Part Numbers
8 Channels, 16-bit DAC, 500 kHz,
Arbitrary Waveform Generator
V285-ZA11
8 Channels, 16-bit DAC, 500 kHz, 4MB Buffer,
Arbitrary Waveform Generator
V285-ZD11
16 Channels, 16-bit DAC, 500 kHz,
Arbitrary Waveform Generator
V285-ZA21
16 Channels, 16-bit DAC, 500 kHz, 4MB Buffer,
Arbitrary Waveform Generator
V285-ZD21