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In this episode Shahriar reviews the newly released Lakeshore 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:

https://www.lakeshore.com/products/pr...

This review is organized as follows:

00:00:00 - Introductions
00:00:35 - Why is the M81 system a new type of instrumentation category?
00:04:51 - Instrument overview, font/back panels, module interfaces
00:07:42 - Complete teardown of all modules & mainframe
00:21:05 - AC & DC performance verifications, detailed GUI overview, mainframe usability
00:36:31 - Full BJT characterization, IV trace, thermal effects, MeasureLINK platform, sequencing measurements, scripting capabilities
00:46:28 - AC voltage & current linearity, THD & spurious performance verifications
00:51:48 - Lock-in capability, characterization of RC circuit phase response, harmonic measurement, DC + AC capabilities
00:59:37 - Ultrasonic liquid level measurement setup, lock-in phase tracking, MeasureLINK plotting over time
01:02:28 - Lock-in with externally modulate signals, photovoltaic effect of a glass-package diode, chopper signal synchronization
01:06:59 - Additional possible experiments, Lakeshore white papers
01:07:50 - Recommendations & concluding remarks

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