Modules

World Leader Presents High Performance Modules PDF Download Image 3

1200 Series Filter Modules Set Fixed | 1600 Series Prorammable

We keep a range of 'standard' filter modules in stock, covering a wide frequency and application range.
24 dB/Octave and 48 dB/Octave Butterworth
24 dB/Octave and 48 dB/Octave Bessel
Anti Aliasing  >-80 dB at 1.5 cut off frequency
Linear Phase, flat to cut off,  >-80 dB at 3 times cut off.


  • Lowpass   Highpass  Notch
  • 0.1 Hz to > 500 kHz
  • Butterworth, Bessel, Linear phase, and anti-aliasing
  • Stable DC characteristics
  • Typically > 80dB rejection (1:104)
  • Low distortion
  • Resistor set and Fixed Frequency
  • Many types held in stock
  • High quality continuous filters-no switching frequencies! 
 1200 series signal filter module
1200 Series fixed frequency filter module

 

Add your own external resistors to set the cut off frequency anywhere within a 1000:1 range. The filter modules require a noise free stable +/- 15 Volt supply. Signal levels are +/- 10 V, usually with some 'headroom'.
We can supply filter modules pre-set to a fixed frequency, contact us for details.

Circuit and Connection Details
For more detailed circuit information, and data to enable you to fit 1200 series filter modules to your products use the link here.

Stock
The following types are available from stock:

Filter Type Frequency Pass Size Kemo Type
Butterworth 24 dB/ Octave 1 - 1000 Hz Low 25x50x15mm 1204/2/05 LP
Butterworth 24 dB/ Octave 1 - 1000 Hz High 25x50x15mm 1204/2/05 HP
Butterworth 48 dB/ Octave 1 - 1000 Hz Low 50x50x15mm 1208/2/03 LP
Butterworth 48 dB/ Octave 1 - 1000 Hz High 50x50x15mm 1208/2/03 HP
Butterworth 24 dB/ Octave 100 -100 kHz Low 25x50x15mm 1204/200/05 LP
Butterworth 24 dB/ Octave 100 - 100 kHz High 25x50x15mm 1204/200/05 HP
Butterworth 48 dB/ Octave 100 - 100 kHz Low 50x50x15mm 1208/200/03 LP
Butterworth 48 dB/ Octave 100 - 100 kHz High 50x50x15mm 1208/200/05 HP
Bessel 24 dB/ Octave 1 - 1000 Hz Low 25x50x15mm 1204/2/09 LP
Bessel 48 dB/ Octave 1 - 1000 Hz Low 50x50x15mm 1204/2/07 LP
Bessel 24 dB/ Octave 100 - 100 kHz Low 25x50x15mm 1204/200/09 LP
Bessel 48 dB/ Octave 100 - 100 kHz Low 50x50x15mm 1204/200/07 LP
Bessel 48 dB/ Octave 1 - 1000 Hz High 50x50x15mm 1204/2/07 HP
Bessel 48 dB/ Octave 100 - 100 kHz High 50x50x15mm 1204/200/07 HP
Anti-aliasing 1 - 1000 Hz Low 50x50x15mm 1208/2/01 LP
Anti-aliasing 1 - 1000 Hz High 50x50x15mm 1208/2/01 HP
Anti-aliasing 100 - 100 kHz Low 50x50x15mm 1208/200/01 LP
Anti-aliasing 100 - 100 kHz High 50x50x15mm 1208/200/01 HP
General Purpose 1 - 1000 Hz Low 50x50x15mm 1208/2/41 LP
General Purpose 1 - 1000 Hz High 50x50x15mm 1208/2/41 HP
General Purpose 100 - 100 kHz Low 50x50x15mm 1208/200/41 LP
General Purpose 100 - 100 kHz High 50x50x15mm 1208/200/41 HP
Notch Q=10 10 - 10 kHz Notch 50x50x15 1208/20/NQ10

 

Filter Module Response Curves

  

Download the pdf version of the standard filter response curve sheet, OR click on the filter type number for the specific pdf filter response data sheet.
Full pdf 1200 Module data sheet with specification.

BandPass Filter Modules 
We do not hold a stock range of bandpass electronic filters, each requirement is different. In some cases the AC coupling on the Kemo carrier cards reduces the need for low frequency highpass filtering.
The usual solution for band pass is to use a combination of two filter modules, one highpass and one lowpass. This is a very flexible method; sharp bands can be made from high and lowpass Response 01 filters, or more gentle bands from response 41 or 03.
Not sure of the frequencies required? or think they may need to be changed. Then a pair of 1600 programmable modules fitted to a Kemo carrier card with easy to change dip switches are a good solution.
Click here to go to the CardMaster21.2 filter card which is ideal fo this, available in a compact 1 slot mini rack, usually quick delivery.
Contact us to discuss your requirements.

Notch Filter Modules
Notches are easier than bandpass electronic filter modules, in most cases a notch is required to eliminate one frequency, usually 50 or 60 Hz. 
We have several notch filters available, the sharpest with a Q of around 10. The response curve for this electronic filter module set to 50 Hz is shown below. 
Click here for the pdf Notch Filter Response curve.

  

Support for older Filter Modules
A note for long-standing users of our modules: we try to provide the highest level of support for all our customers and for service needs we can recreate many of the modular products we have produced in the last three decades. Also contact us for advice on replacing products from defunct suppliers.