Digitizer
±10.24 mV to ±40.96 V with 16-bit resolution | V490 Highland Technology, Inc.

V490 MULTI-RANGE DIGITIZER

FEATURES
- 16 channels of independently programmable differential analog input acquisition
- Input ranges from ±10.24 mV to ±40.96 V with 16-bit resolution
- Sample rate up to 500 Ks/s per channel
- Programmable lowpass filter per channel from 1 Hz to 100 KHz
- Simultaneous sampling, extendable across modules
- Realtime and FIFO-buffered data simultaneously available
- Common-mode rejection 120 dB typical, ±10 V common-mode range
- Overload protected to ±250 volts on all ranges

The V490 includes 16 independent acquisition channels, each with a programmable-gain differential amplifier, analog anti-aliasing filter, 16-bit ADC, and digital post-processing. With a dedicated A/D converter per channel, the V490 provides true simultaneous sampling, which can be extended across multiple V490s or triggered from an external TTL signal.

Both realtime and FIFO buffered data are simultaneously available, with each path having its own programmable digital filter. FIFO load rates are internally programmable to up to 500 Ks/s, or may be externally triggered. Digital processing allows emulation/replacement of a classic Neff type architecture, namely a preamp and analog lowpass filter feeding a low-aperture-jitter triggerable ADC per channel, while adding the ability to watch the real-time data at any time without disturbing the FIFO acquisition.

The V490 also integrates with Highland's advanced test and cal architecture, allowing each channel to be relay switched to a dedicated cal bus. The cal bus allows one or many modules to be automatically connected to an external DVM, providing traceability with no need to disturb field wiring.