Specifying Lock-In Amplifiers (PerkinElmer)
The Analog Lock-In Amplifier (PerkinElmer)
The Digital Lock-In Amplifier (PerkinElmer)
A Lock-In Amplifier Primer Very Funny!
Explore the Lock-In Amplifier (EG&G)
About Lock-In Amplifiers (EG&G)
The Use of Lock-In Amplifier for Detection and Measurement of Light Signals
Techniques of Low Level Light Measurement
A Frequency-Domain Description of a Lock-in Amplifier
UTiLIA A PC-Based Lock-In using LabView
An On-Line Tutorial from Los Alamos National Laboratories
A Power Point Tutorial About Lock-In Amplifiers
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