BERKELEY, Calif., Nov. 8, 2012 — Ultraview Corp. has announced a 16-bit four-channel PCIe 250-megasample per second analog-to-digital (A/D) board for applications where repetitive signals on multiple time-aligned channels must be observed with a high signal-to-noise ratio, such as nuclear magnetic resonance, radar, ultrasound, time-of-flight imaging, spectroscopy, communications systems and antenna testing.
Features include a >160-dB dynamic range and onboard hardware averaging. The heterodyne trigger simplifies scientific, military and medical applications. The board displays repetitive signals as low as 10 nV, from DC to 400 MHz. Selective recording with fiducial marks and adjustable pre-/posttrigger allow efficient and flexible capture of single-shot and repeating waveforms with near-100% collection efficiency.
Based on a hardware averaging engine with near-zero dead time, implemented in the board’s Xilinx field-programmable gate array, the UltraDyne 16-250Mx2AVE-8GB-50T/155T and UltraDyne 16-250x4AVE-8GB-50T/155T can average repetitive signal strings up to 1 million times with record lengths to 16,384 samples (50T model) and 262,144 samples (155T model) uninterruptedly. The precise repetitive summing of each new string of samples onto a running 32-bit average can be triggered by any one of three software-selectable triggering mechanisms.
A transistor-transistor-logic input, with selectable ± slope, causes waveforms to be acquired or added to a running average; a software slider-adjustable level on the incoming signal waveform on any of the four channels, with + or – slope, enables scopelike triggering, with pretrigger, on a given place on a repeating waveform; and heterodyning trigger input means that triggering will occur on the difference frequency between this input and the sampling clock frequency. This is useful for time-of-flight imaging systems, radar and pulsed spectroscopy systems, in which transmit or stimulus waveforms are repeated 1000 times per second.
All Ultradyne16-250 models are high-dynamic-range general-purpose high-speed data acquisition boards, each with 8 GB of memory, large channel counts and continuous transfers to the host system at up to 1.4 GB/s.
All models include Windows 7 and 8 driver packages, as well as a LabView control panel for Windows. Also included are 64-bit Linux 6.2 drivers and command line user programs. A real-time adjustable triggering menu and customizable display interface enable easy panning and zooming to examine fine details on sharp, low-noise-averaged waveforms in the time and/or frequency domain on a single graph.
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