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USB DAQ modules have dedicated 16bit A/D

Posted: 11 Apr 2012     Print Version  Bookmark and Share

Keywords:data acquisition  DAQ  A/D converter 

Data Translation offers a series of USB multi-function data acquisition modules that allow simultaneous measurement of different signals on multiple channels.

 data acquisition module

The instrument features a dedicated 16bit A/D converter for each analogue input.

The instruments feature a dedicated 16bit A/D converter for each analogue input. Even with the highest sampling rates—between 800kHz and 10MHz per channel, depending on the model—the multi-function modules effectively eliminate external influences that can affect measurement accuracy and are inherent, for example, in multiplexed systems or high-ohmic sensors.

At the entry level, the product range provides the DT9836-S with six analogue inputs and sampling rates of 800kHz/channel. The DT9862 module with two analogue inputs marks the top of the range and allows sampling two channels at up to 10MHz per channel in burst sampling mode, or one channel at 10MHz in streaming mode with direct data transfer to the PC.

Unlike traditional data acquisition modules, Data Translation's multi-function modules do not multiplex the input signals, but provide a separate A/D converter for each input channel, according to the company. This not only allows fast sampling rates, but also eliminates noise, crosstalk and common mode noise.

In addition to the analogue inputs, the high-speed instruments provide 32 digital I/O channels, two counter/timers and three quadrature decoders; some of the models also feature high-speed analogue outputs. All analogue and digital input and output channels can be run simultaneously and synchronously at the same clock frequency. 500V isolation from the USB 2.0 port comes as standard.

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