Lock-in Amplifier

Overview

Moku:Lab’s digital Lock-in Amplifier supports dual-phase demodulation (XY/Rθ) from DC to 200 MHz more than 120 dB of dynamic reserve. It also features an integrated 2-channel oscilloscope and data logger, enabling you to observe signals at up to 500 MSa/s and log data at up to 1 MSa/s.

Download user manual

FAQ

Can I adjust the corner frequency of the low-pass filter?

Yes! It is adjustable from 300 mHz to 4.97 MHz via an iPad, Python or MATLAB.

What is the maximum rate at which I can save data, and how many points can I save?

The sample rate is dynamically adjusted by the horizontal zoom of the display, and can be set up to the full ADC sample rate of 500 MSa/s. Currently you can save 16k points for two channels simultaneously. For longer term data taking use the new data logging mode. Logging to .CSV is supported at up to 1 kSa/s. For faster data rates use the .li binary format which allows logging to SD card at up to 100 kS/s and logging to the Moku:Lab’s RAM at up to 1 MSa/s.

Can the Lock-in Amplifier demodulate using an external source?

Yes!! The September 2017 software update added support for direct demodulation with an external source, demodulation with a PLL (Phase-locked loop) locked to an external source, and the ability to modulate and demodulate at different frequencies.

Does the Lock-in include a PID controller for feedback applications?

Yes! A PID controller was added in the September 2017 update. Update your iPad App to get all the new capabilities.

The Lock-in Amplifier can readout I and Q (X and Y). What about R and theta?

Following the September 2017 free update, to switch from an X and Y readout to R and theta on the Moku:Lab App, tap the X Y block on the block diagram.