The Signal Path (TSP) is a science and electrical engineering video blog for industry professionals, researchers, students and hobbyists. TSP is a not-for-profit website dedicated to provide free education spanning a wide range of electrical engineering and science topics. Equipment reviews, tutorials and repair videos are posted regularly.
Shahriar Shahramian – Director – Bell Labs ASICs & Packaging Research Lab | Bell Labs Fellow | Adjunct Professor Columbia & Princeton University | Founder of The Signal Path
Lakeshore M81 Synchronous Source Measure System (SSM) Review, Teardown & Experiments
In this episode of The Signal Path, Shahriar reviews the newly released Lake Shore M81 Synchronous Source Measure System. This unique product combines three key metrology techniques into one: source/measure capability, high-dynamic range remote-heads and lock-in capability while maintaining both DC and AC modes.
“In my view, this is an entirely new instrumentation category!”
Shahriar Shahramian
This episode (TSP #264) from The Signal Path features host Shahriar examining the newly released Lakeshore M81 Synchronous Source Measure System (SSM)—a precision lab instrument that merges multiple functionalities.
Overview & Capabilities
Shahriar introduces the M81, highlighting its core features and applications. It’s designed for synchronous measurements that require high accuracy, particularly in advanced materials testing, semiconductor characterisation, and precision electronic measurement setups.
Teardown
The video delves into the internal components of the M81. Shahriar disassembles the device to reveal:
- Precision analogue circuitry
- Synchronous detection modules
- Embedded processing units and calibration hardware
- Thoughtful layout designed to minimise noise and crosstalk
The teardown emphasises build quality and design choices aimed at performance and reliability.
Practical Experiments
Shahriar conducts a series of experiments using the M81, demonstrating:
- Signal sourcing and measurement
- Synchronous detection and filtering
- Performance benchmarks such as noise floor, linearity, and dynamic range
- Comparative scenarios to showcase advantages over traditional instruments
These practical tests illustrate the M81’s value in real-world lab environments.
Why It Stands Out
- Multifunctionality: Combines sourcing and measuring with synchronous detection—a rare combination in commercial instruments.
- In-Depth Technical Insight: The teardown provides a rare peek into internal design, valuable for both engineers and enthusiasts.
- Experimental Validation: Real-world testing helps viewers gauge the instrument’s performance and potential applications.
M81 Synchronous Source Measure System
An innovative architecture for coordinating low-level measurements from DC to 100 kHz
To discuss the M81’s capabilities and your application, please get in touch with our Sales Manager, Dr. Luke Nicholls, by email below or call (01372) 378822.
