Moku Phasemeter Series
Precision Phase, Frequency, and Amplitude Measurement
Overview
The Moku Phasemeter series provides ultra-precise phase, frequency, and amplitude tracking across multiple analog input channels. Built on a digitally implemented phase-locked loop (PLL) architecture, these instruments deliver real-time measurements with zero dead time, low input noise, and high phase precision. They are ideal for advanced research, offering built-in tools for Allan deviation, power spectral density, and frequency stability analysis. With features like phase-locked sine wave generation, frequency multipliers, microhertz-level resolution, and full API support, the Moku Phasemeter series is a powerful solution for time/frequency metrology, optics, and quantum systems.
Product Variants
The Moku Phasemeter series includes several models tailored for different frequency ranges and channel counts:
- Moku:Delta Phasemeter: Up to 8 analog input channels, 2 GHz frequency range.
- Moku:Pro Phasemeter: Up to 4 analog input channels, 300 MHz frequency range.
- Moku:Go Phasemeter: 2 analog input channels, 30 MHz frequency range.
Key Features
- Eight (Moku:Delta) or four (Moku:Pro) or two (Moku:Go) independent Phasemeter channels that track and record phase, frequency, and amplitude in real time.
- Phase-locked output option enables the generation of sine waves phase-locked to the inputs at the fundamental frequency or harmonics.
- Output measured amplitude, phase, or frequency offset for closed-loop control systems, or stream data to a computer using Moku APIs.
- Real-time spectral analysis to display and save power spectral densities, Allan deviation, and more.
- Phase-locked loop tracking bandwidths from 1 Hz to 1 MHz (model dependent).
- Ultra-stable onboard clock (± 1 ppb) with an option for GPS clock reference (Moku:Delta).
Specifications Summary
| Feature | Moku:Delta | Moku:Pro | Moku:Go |
|---|---|---|---|
| Input Frequency Range | 1 kHz to 2 GHz | 1 kHz to 300 MHz | 1 kHz to 30 MHz |
| Tracking Bandwidth | Up to 1 MHz | Up to 1 MHz | Up to 100 kHz |
| Phase Error | < 10 nV/Hz | 0.5 µrad/√Hz @ 10 Hz | 1.1 µrad/√Hz @ 10 Hz |
| Data Capturing Rates | 37 Hz to 152 kHz | 37 Hz to 152 kHz | 30 Hz to 122 kHz |
| Built-in Analysis | Allan Deviation, Power Spectral Density | Allan Deviation | Allan Deviation |
| Input Voltage Range | 100 mVpp, 1 Vpp, 10 Vpp, 40 Vpp | 400 mVpp, 4 Vpp, 40 Vpp | 1 Vpp, 10 Vpp, 50 Vpp |
| Sine Wave Generators | Eight-channel 2 GHz | Four-channel 500 MHz | Two-channel 20 MHz |
| Output Frequency Multiplier | 0.125x to 250x | 0.125x to 250x | 0.125x to 250x |
Applications
- Precision oscillator characterization
- Optical / ultrasound ranging
- Gravitational wave detection
- Optical and RF interferometry
- Time and frequency metrology
- Quantum optics and photonic systems
- Advanced control systems and feedback loops
- Interferometry
- Oscillator analysis
- Phase-locked loop applications
