Moku Digital Filter Box
The Moku Digital Filter Box enables real-time design and deployment of infinite impulse response (IIR) filters. It supports various filter shapes including lowpass, highpass, bandpass, and bandstop, with selectable types such as Butterworth, Chebyshev I/II, Elliptic, Bessel, Gaussian, Cascaded, and Legendre. Key parameters like passband ripple and stopband attenuation are fully configurable, and users can visualize the frequency response using an interactive Bode plot. The instrument offers sub-microsecond latency, making it suitable for closed-loop control, signal conditioning, and advanced system integration.
Key Specifications
| Feature | Specification |
|---|---|
| Sampling Rate | 305.18 kHz, 4.8828 MHz, or 39.063 MHz (Moku:Delta); 305.28 kHz, 4.8828 MHz, or 39.063 MHz (Moku:Pro); 122.07 kHz, 1.9531 MHz, or 15.625 MHz (Moku:Lab); 61.035 kHz, 488.28 kHz, or 3.9063 MHz (Moku:Go) |
| Filter Order | 2 to 16 (Moku:Delta); 2, 4, 6, 8, 10, 12, 14, 16 (Moku:Pro); 2, 4, 6, 8, 10, 12 (Moku:Lab); 2, 4, 6, 8, 10, 12 (Moku:Go) |
| Input Range | Up to 40 Vpp (Moku:Delta, Moku:Pro); 1 Vpp or 10 Vpp (Moku:Lab); 10 Vpp or 50 Vpp (Moku:Go) |
| Output Voltage Range | 10 Vpp into 50 Ω (Moku:Delta, Moku:Pro); 2 Vpp into 50 Ω (Moku:Lab); 10 Vpp into Hi-Z (Moku:Go) |
| Filter Shapes | Lowpass, Highpass, Bandpass, Bandstop, Custom |
| Filter Types | Butterworth, Chebyshev I, Chebyshev II, Elliptic, Bessel, Gaussian, Cascaded, Legendre |
| Corner Frequencies | 58.63 mHz – 17.58 MHz (Moku:Delta, Moku:Pro); 23 mHz to 7 MHz (Moku:Lab); 11.73 mHz - 1.758 MHz (Moku:Go) |
| Input-Output Latency | Sub-microsecond (Moku:Delta, Moku:Pro, Moku:Lab); < 5 µs (Moku:Go) |
| Passband Ripple | Configurable 0.1 – 10 dB |
| Stopband Attenuation | Configurable 10 - 100 dB |
| Input/Output Gain | -40 dB to 40 dB |
Features
- Visualize signal and configuration in real-time, designing filter frequency response with an interactive Bode plot.
- View digital signal processing block diagrams with built-in probe points for signal monitoring.
- Versatile input and output options: multiple input and output channels, with optional blending or linear combinations for MIMO systems.
- Supports custom filter designs.
- Includes built-in Oscilloscope and Data Logger functionality.
Applications
- System design
- Closed-loop control
- Noise filtering
- Signal amplification
- Filter design and evaluation
- Custom signal conditioning pipelines
- Adaptive RF filter emulation
- MIMO system prototyping
