Real-Time DSP System Suits Vibration Applications

June 20th, 2006

The DT9841-VIB is a real-time DSP data acquisition system capable of measuring eight simultaneous IEPE sensor inputs for noise, vibration acoustics, sonar, and accelerometer measurements. It is the latest addition to the Fulcrum(R) II Series of DSP data acquisition products for USB 2.0. The DT9841-VIB provides excitation, signal conditioning, and anti-aliasing filtering for real-time high accuracy IEPE sensor values.

The DT9841-VIB board contains eight, simultaneous 24-bit sigma-delta analog input channels with a sampling rate of 100 kHz per channel. In addition, the board has two, 24-bit deglitched waveform analog output channels to control a shaker table for example, and stimulate systems under test, 16 digital I/O lines for control and monitoring, and three 32-bit counter/timers providing highly accurate timing functions. All subsystems can be run simultaneously and monitored in real-time with an on-board 32-bit floating point processor. With sampling rates up to 100 kHz per channel and uninterrupted data transfer, the DT9841-VIB board is designed for real-time applications.

The DT9841-VIB Sleek Box supports the following software programmable IEPE functions for each of its eight analog inputs;

• current source - Enable or disable the use of a 4 mA current source,
• AC/DC coupling - Select whether AC coupling or DC coupling is used, and
• filtering - Enable or disable the use of the 2-pole, 10 kHz, Butterworth filter.

Host and DSP communication libraries ship with the board and are compatible with TI Code Composer Studio and Microsoft Visual Studio providing complete access to all on-board real-time functions and communication to/from the PC. Ready-to-Measure(TM) example application programs exercise every board function and get users up and running quickly. Additionally, this system is supported by Vibrant Technology’s(R) ME’scope program for post-processing and analysis of acoustic and vibration test data.

The DT9841-VIB, available in a Sleek Box version is priced at $5,690 and is shipping immediately. For more information, visit the Data Translation website.

Entry Filed under: Data Acquisition, NVH