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Two new anti-aliasing terminal drawers from Adept Scientific provide
guaranteed consistency of results from the popular Strawberry Tree
DATAshuttle Express family of high speed, portable data acquisition units.
In many applications, high frequency signals outside the frequency range of
interest can result in aliasing. Aliasing destroys the integrity of the
measured data. The only way to be sure that this does not happen is to place an
anti-alias filter in each analogue input channel. This places a limit on the
bandwidth of the accepted input signals, so eliminating extraneous signals
that may corrupt the data.
The new Strawberry Tree anti-alias filter drawers incorporate software
programmable filtering into the established DATAshuttle Express product.
The 5 pole Butterworth filters have software control of cut-off frequency from
12Hz to 40kHz, with precise phase matching.
Two models are available. The general purpose GP/AAF filter drawer provides
reliable measurement of voltage and signals from +/-25mV to +/-10V and the
piezoelectric PE/AAF anti-alias filter drawer adds support for ICP
accelerometers for dynamic measurement of vibration and acceleration.
Also available is a new DC power adaptor, which allows the DATAshuttle Express ,
with or without the anti-alias filter drawers, to operate from a mobile power
supply such as a car, truck or aeroplane battery. This will be especially useful
for mobile applications, including those involving standard notebook PCs
where no AC power supply is available.
The DATAshuttle Express is a high speed portable data acquisition unit that is
ideal for recording vibration and sound, together with temperature,
pressure, flow, displacement etc. It can handle data acquisition speeds of up
to 100kHz using the parallel port of a laptop or desktop PC.
DATAshuttle Express and the full range of Strawberry Tree data acquisition
products is supplied and supported in the UK by master distributor Adept
Scientific plc, 6 Business Centre West, Avenue One, Letchworth, Herts SG6 2HB;
telephone (01462) 480055, fax (01462) 480213,
email
data.acq@adeptscience.co.uk. |
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