Laser 2000

Digital Filter Box

Digital-Filter-Box

Available on Moku:Go, Moku:Lab, and Moku:Pro hardware

Liquid Instruments

Digital Filter Box

With the Digital Filter Box, you can interactively design and generate different types of infinite impulse response filters with a range of sampling rates.

Select between lowpass, highpass, bandpass, and bandstop filter shapes with up to seven fully configurable filter types including Butterworth, Chebyshev, and Elliptic. Below is the Digital Filter Box’s user interface showcasing some of the key features explained below:

 

Key Features of the Digital Filter Box:

Visualise and Configure with the Intuitive Block Diagram

The block diagram, shown above, provides a clear interactive overview of the Digital Filter Box’s setup allowing you to easily configure, monitor, and adjust every stage in the signal processing chain. The intuitive and interactive user interface allows you to:

  • Configure the setup
  • Monitor the signal throughout the signal process
  • Adjust components using interactive icons

 

Built-in Probe Points

The integrated Oscilloscope and Data Logger are accessible via probe points. You can be place the probe points on the block diagram to monitor signals and log data at various points in the Digital Filter Box’s setup. In the video above, probe points A and B are used, and the signals are clearly displayed on the Oscilloscope below the block diagram.

Integrated instruments accessible via probe points:

  • Oscilloscope
  • Data Logger
Control matrix

Change the values in the input control matrix to combine, rescale and redistribute the input signals to the two independent FIR filters.

Pre-set or Custom Filters

Select from lowpass, highpass, bandpass, and bandstop filter shapes with up to seven filter types including Butterworth, Chebyshev, and Elliptical, or build your own custom filters. Custom filter coefficients can be uploaded from the clipboard or a local file.

 

Applications:

  • Filter design prototyping
  • Closed-loop control
  • Noise filtering
  • Signal amplification
  • Custom filter evaluation
  • System design

The Digital Filter Box runs on Moku:Go, Moku:Lab and Moku:Pro. You can compare the platform specifications below:

Moku:Go’s
Digital Filter Box
Moku:Lab’s
Digital Filter Box
Moku:Pro’s
Digital Filter Box
Sampling Rate
31.5 kHz or 3.9 MHz 122.07 kHz or 15.625 MHz 305.18 kHz or 39.063 MHz
Filter Order
2, 4, 6, 8 2, 4, 6, 8 2, 4, 6, 8
Filter Shapes
Lowpass, highpass, bandpass, and bandstop Lowpass, highpass, bandpass, and bandstop Lowpass, highpass, bandpass, and bandstop
Filter Types
Butterworth, Cascaded, Chebyshev I, Chebyshev II, Elliptic, Bessel, Gaussian, and Legendre Butterworth, Cascaded, Chebyshev I, Chebyshev II, Elliptic, Bessel, Gaussian, and Legendre Butterworth, Chebyshev I, Chebyshev II, Elliptic, Bessel, Gaussian, and Legendre
Input-Output Latency
< 5 μs Sub-microsecond Sub-microsecond
Input Range
± 5 V or ± 25 V ± 0.5 V or ± 5 V ± 20 V
Output Voltage Range
± 5 V into 1 MΩ ± 1 V into 50 Ω ± 5 V into 50 Ω
Deployable in Multi-instrument Mode?
Yes N/A Yes
Software & APIs
macOS App
Windows App
API support for Python, MATLAB, and LabVIEW
iPadOS App
Windows App
API support for Python, MATLAB, and LabVIEW
iPad App
API support for Python and MATLAB
Digital Filter Box Datasheet - Moku:Go
Digital Filter Box Datasheet - Moku:Lab
Digital Filter Box Datasheet - Moku:Pro
Digital Filter Box User Manual - Moku:Lab
Digital Filter Box User Manual - Moku:Pro
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Digital-Filter-Box

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Alternatively, just call +44 (0) 1933 461 666 and ask to speak to the Photonics team.

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Alternatively, just call +44 (0) 1933 461 666 and ask to speak to Toby.

Toby Scrivener

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MPhys (Hons)

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Peter Collins

Peter Collins

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MPhys

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Shannon O’Connor

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