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News Release from: Kemo | Subject: 1600 Series filter modules
Edited by the Engineeringtalk Editorial
Team on 31 January 2002
Programmable filter modules perform
better
A new range of filter modules has been developed for data-acquisition applications where extremely high performance has to be combined with high numbers of channels
The Kemo 1600 Series range of filter modules has been developed for data-acquisition applications where extremely high performance has to be combined with high numbers of channels The new range uses advanced continuous-time filter design techniques to offer significant benefits compared with integrated-circuit filter chips designed to address the same application sector
This article was originally published on Engineeringtalk on 6 Jun 2000 at 8.00am (UK)
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Real-time digital filter with new responses
The KDF-1 is a new real-time digital filter developed by UK manufacturer Kemo in conjunction with UMIST.
Multi-channel filter card with gain for VME/VXI
Kemo has developed a multi-channel filter card with gain which is physically compatible with data-acquisition and instrumentation systems based on the 6U VME and B-size VXI industry standards.
Unlike many IC filters, the Kemo devices exhibit low variation of DC offset with cutoff frequency and no high-frequency clock breakthrough or input aliasing.
Noise and linearity performance are also far superior, allowing the filters to be used with convertor systems of the very highest performance.
The 1600 Series modules can be supplied with a wide range of filter types and response shapes, including lowpass filters optimised for high-performance alias protecting, highpass for the elimination of low-frequency disturbances prior to A/D conversion, and special-purpose responses.
The basic module measures only 50 x 50 x 15 mm, and is digitally programmable for cutoff frequency over a 255:1 range.
Models offering cutoffs over the range 1 Hz to 255 kHz are available.
The 1600W modules provide an even greater cutoff span with 100 pseudo-logarithmic filter steps over a 1792:1 range.
This combination allows small steps at low frequency while still covering a wide frequency range.
A range of carrier cards allows the filters to be used in data-acquisition systems as part of a combined filter/amplifier unit for local amplification and the filtering of low-level noisy signals.
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