Lock-in Amplifier

The Moku Lock-in Amplifier supports dual-phase demodulation (X/Y or R/θ) from DC to 600 MHz. It also features an integrated two- or four-channel Oscilloscope and Data Logger, enabling you to observe signals at 
up to 1.25 GSa/s and log data at up to 10 MSa/s.

Download datasheet

How to use the Moku Lock-in Amplifier

The Moku Lock-in Amplifier is easy to use and offers a range of advanced capabilities to optimize your experiment — at the most cost-effective price in the industry. Watch the video to learn more.

Lock-in Amplifier's dual-phase demodulator with cascaded, single-pole lowpass filters

Dual-phase demodulation for enhanced measurement accuracy

The Moku Lock-in Amplifier features a dual-phase demodulator with cascaded, single-pole lowpass filters to attenuate the second harmonic and suppress noise in each quadrature.

  • Select between 6, 12, 18, and 24 dB / octave lowpass filter slopes
  • Select between rectangular (X/Y) and polar (R/θ) coordinate modes
  • View the demodulated in-phase and quadrature signals prior to the lowpass filters using the integrated Oscilloscope
mokupro lock-in amplifier integrated PID controller oscilloscope data logger

Unlock greater insights with additional embedded instruments

Monitor up to four signals at a time using the Moku Lock-in Amplifier’s integrated 4-channel, 1.25 GSa/s Oscilloscope, and continuously log data at up to 10 MSa/s using its built-in Data Logger. Additionally, the integrated PID Controller provides real-time control over gain profiles with configurable saturation.

mokupro lock-in amplifier internal and external references

The Moku Lock-in Amplifier offers internal and external references for maximum flexibility

Configure the local oscillator source to suit different applications. Select from internal or external demodulation references, or bypass the mixer stage altogether. Use the internal PLL frequency multiplier to demodulate up to the 250th harmonic or down to 0.125x of the fundamental frequency.

Measure more, instantly, from your preferred operating system

Wirelessly configure and monitor your setup’s performance from intuitive Moku software for iPad, Windows, or Mac applications. Moku software provides a clear and dynamic user experience so you can quickly configure, modify, and debug your setup.

Lock-in amplifier's LabVIEW boxed

Engineered to work seamlessly with your favorite APIs

API integration with MATLAB, LabVIEW, and more allows straightforward automation of your Moku device in complex setups or for repetitive tasks. Save your measurements, screenshots, traces, and other settings locally or to your preferred cloud app. You can also send work to yourself or colleagues within the Moku app.

Engineered for demanding applications

You can’t innovate for the future when your test equipment is stuck in the past. Use the Moku Lock-in Amplifier to accelerate development timelines with speed and flexibility unmatched by any other instrument in its class.

Analog
radio

Laser frequency
stabilization

Laser scanning
microscopy

Magnetic
sensing

Pump probe /
ultrafast spectroscopy

Integrates seamlessly with your tech stack

Specifications and
technical documents

The Moku Lock-in Amplifier runs on Moku:Pro, Moku:Lab, and Moku:Go. Compare the specifications to choose the right device for your application

mokupro
mokulab

Moku:Pro

Learn more

Moku:Lab

Learn more

Moku:Go

Learn more

Technical specifications

Channels

4

2

2

Demodulation frequency

1 mHz to 600 MHz

1 mHz to 200 MHz

1 mHz to 30 MHz

Dual-phase demodulation

X/Y or R/θ

X/Y or R/θ

X/Y or R/θ

Demodulation modes

Internal, external (direct local oscillator input or phase-locked loop with frequency multiplier from 0.125x to 250x), with the option to bypass the mixer stage

Internal, external (direct local oscillator input or phase-locked loop with frequency multiplier from 0.125x to 250x), with the option to bypass the mixer stage

Internal, external (direct local oscillator input or phase-locked loop with frequency multiplier from 0.125x to 250x), with the option to bypass the mixer stage

Dynamic reserve

> 120 dB

> 120 dB

> 100 dB

Filter time constant

From 12.8 ns to 0.215 s

From 32 ns to 0.537 s

From 128 ns to 2.15 s

Input impedance

50 Ω / 1 MΩ

50 Ω / 1 MΩ

1 MΩ

Output gain range

-80 to +160 dB

-80 to +160 dB

-80 to +160 dB

Local oscillator output

Up to 600 MHz with variable amplitude

Up to 200 MHz with variable amplitude

Up to 20 MHz with variable amplitude

Documentation

Datasheets

Moku:Pro Lock-in Amplifier Datasheet
Moku:Pro Hardware Datasheet

Moku:Lab Lock-in Amplifier Datasheet
Moku:Lab Hardware Datasheet

Moku:Go Lock-in Amplifier Datasheet
Moku:Go Hardware Datasheet

User manuals

Moku:Pro Lock-in Amplifier User Manual

Moku:Lab Lock-in Amplifier User Manual

Moku:Go Lock-in Amplifier User Manual

Specs

Moku:Pro Lock-in Amplifier Specs

Moku:Lab Lock-in Amplifier Specs

Moku:Go Lock-in Amplifier Specs

mokupro

Moku:Pro

Lock-In Amplifier

Technical specifications

Channels
4

Demodulation frequency
1 mHz to 600 MHz

Dual-phase demodulation
X/Y or R/θ

Demodulation modes
Internal, external (direct local oscillator input or phase-
locked loop with frequency multiplier from 0.125x to
250x), with the option to bypass the mixer stage

Dynamic reserve
>120 dB

Filter time constant
From 12.8 ns to 0.215 s

Input impedance
50 Ω / 1 MΩ

Output gain range
-80 to +160 dB

Local oscillator output
Up to 200 MHz with variable amplitude

Documentation

Datasheets
Moku:Pro Lock-in Amplifier Datasheet
Moku:Pro Hardware Datasheet

User manuals
Moku:Pro Lock-in Amplifier User Manual

Specs
Moku:Pro Lock-in Amplifier Specs

mokulab

Moku:Lab

Lock-In Amplifier

Technical specifications

Channels
2

Demodulation frequency
1 mHz to 200 MHz

Dual-phase demodulation
X/Y or R/θ

Demodulation modes
Internal, external (direct local oscillator input or phase-
locked loop with frequency multiplier from 0.125x to
250x), with the option to bypass the mixer stage

Dynamic reserve
>120 dB

Filter time constant
From 32 ns to 0.537 s

Input impedance
50 Ω / 1 MΩ

Output gain range
-80 to +160 dB

Local oscillator output
Up to 200 MHz with variable amplitude

Documentation

Datasheets
Moku:Lab Lock-in Amplifier Datasheet
Moku:Lab Hardware Datasheet

User manuals
Moku:Lab Lock-in Amplifier User Manual

Specs
Moku:Lab Lock-in Amplifier Specs

Moku:Go

Lock-In Amplifier

Technical specifications

Channels
2

Demodulation frequency
1 mHz to 20 MHz

Dual-phase demodulation
X/Y or R/θ

Demodulation modes
Internal, external (direct local oscillator input or phase-
locked loop with frequency multiplier from 0.125x to
250x), with the option to bypass the mixer stage

Dynamic reserve
>100 dB

Filter time constant
From 128 ns to 2.15 s

Input impedance
1 MΩ

Output gain range
-80 to +160 dB

Local oscillator output
Up to 20 MHz with variable amplitude

Documentation

Datasheets
Moku:Go Lock-in Amplifier Datasheet
Moku:Go Hardware Datasheet

User manuals
Moku:Go Lock-in Amplifier User Manual