Acquisition kit has flexible filter options
A
Kemo product story
Edited by the Engineeringtalk editorial team
Jan 28, 2008
Upgraded dual-channel benchtop filter/amplifier offers increased gain, lower noise, a higher dynamic range and a wider range of filter responses.
The flagship of the Kemo range is BenchMaster 8: a full redesign of the company's classic VBF 8 dual-channel benchtop filter/amplifier - originally launched in 1975 and now in its fifth generation, with thousands of the earlier units in use worldwide.
The new version of BenchMaster 8, which will be on show at mtec 2008, makes extensive use of surface-mount technology to speed manufacture and delivery as well as offering a number of performance enhancements including increased gain, lower noise, a higher dynamic range and a wider range of filter responses.
The new unit is available with a range of different filter types, including Butterworth, Bessel (four- and eight-pole), general-purpose linear phase, and anti-aliasing responses.
The filter frequency range is from 0.01Hz to 99.9kHz filter.
The two independent channels can each be switched between highpass and lowpass.
They can also be combined in series or parallel to give two channels of lowpass, two channels of highpass, one lowpass/one highpass, bandpass (series connection) and bandstop/notch filtering (parallel connection).
The basic filter response has three "modifier" settings: a minimum overshoot "pulse" mode for impulsive signals; a "flat" mode which provides a flattened response to cutoff; and a "Butterworth" type response with -3dB at cutoff frequency.
Using the "flat" modifier, true 16-pole Bessel and Butterworth filters can be set, maintaining -3dB at cutoff.
The BenchMaster 8 has easy-to-use clear front-panel controls, with BNC input and output.
The inputs can be AC or DC coupled, single-ended or differential.
Up to +54dB (x500) of gain can be applied in nine steps to the input before filtering, with four-stage LED signal-level indication.
A 4mA current source is also available for powering IEPE (integrated electronics piezoelectric) transducer powers, with indication of correct connection.
An optional 10-30V DC power input allows the instrument to be used for portable and in-vehicle applications.
The compact 1U metal case is designed for both benchtop use and rack mounting.
An optional transport/storage case is also available.
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