Liquid Instruments SW-Pro-PHS Phasemeter

Overview

The Liquid Instruments SW-Pro-PHS is a precision phasemeter for the Moku:Pro series that measures the phase of up to four input signals relative to a reference clock with exceptional precision from 1 kHz up to 300 MHz. Unlike conventional lock-in amplifiers or frequency counters, the Phasemeter employs a digital phase-locked loop architecture to deliver exceptional dynamic range, zero dead time, and measurement precision exceeding 6 μradian per root hertz.

Key Features

• 4 input channels for phase measurement
• Frequency range: 1 kHz to 300 MHz
• Phase precision: 6 µrad/√Hz
• Frequency precision: 10 µrad/√Hz
• Clock stability: < 500 ppb
• Phase-locked loop tracking bandwidths from 10 mHz to 10 kHz
• Phase-locked output option for sine wave generation
• Real-time spectral analysis: Power Spectral Density, Amplitude Spectral Density, Allan Deviation
• API support: Python, MATLAB, LabVIEW

Applications

• Oscillator analysis and characterization
• Optical and ultrasonic ranging
• Gravitational wave detection
• Interferometry
• Phase-locked loop design and testing