Product category:
I/O devices
News Release from: Kemo | Subject: BenchMaster 8
Edited by the Laboratorytalk Editorial
Team on 29 January 2008
Filtering the noise to measure small
signals
At Mtec 2008, Kemo features its comprehensive range of electronic signal-processing systems designed to aid the measurement of small, noisy signals in sensor-based instrumentation
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 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
This article was originally published on Laboratorytalk on 11 Aug 2006 at 8.00am (UK)
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The new unit is available with a range of different filter types, including Butterworth, Bessel (4- and 8-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 high-pass and low-pass.
They can also be combined in series or parallel to give two channels of low-pass, two channels of high-pass, one low-pass/one high-pass, 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 cut-off; and a 'Butterworth' type response with -3dB at cut-off frequency.
Using the 'flat' modifier, true 16-pole Bessel and Butterworth filters can be set, maintaining -3dB at cut-off.
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 10-30 V 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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