Portable USB module measures sound and vibration
-- Test & Measurement World, 3/28/2008 7:31:00 AM
The DT9837 four-channel USB data-acquisition module from Data Translation uses a dedicated Delta-Sigma analog-to-digital converter (ADC) for each channel. Designed for sound and vibration measurements, the DT9837 also has a 1-MHz tachometer input that you can use to measure frequency and period and to synchronize the analog inputs. It also contains an analog-output channel that you can use to track any of the analog inputs. A read-back channel from the analog output lets you correlate all signals with the input stream, the output stream, and the tachometer.
Each analog input channel has Integrated Electronics Piezo Electric (IEPE) signal conditioning, which uses a 4-mA current source. Maximum sample rate is 52.7 ksamples/s. An external trigger lets you trigger a measurement on analog voltages from 0.2 V to 9.8 V. Analog input range is ±10 V.
Software support includes DT-Open Layers for Microsoft .NET, 32-bit Windows drivers, DT Measure Foundry, QuickDAQ, LabView, and Matlab. The DT9837 is available in a packaged version and in an OEM version for integrating to larger equipment.
Price: $1795. Data Translation, www.datatranslation.com.
