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MLIDA, Rev A
2 INTRODUCTION
The LIDA-SRS-KIT is an easily integrated kit, which provides a powerful measurement metrology for
experiments by removing background signals through phase sensitive detection. This technique is often
used to extract very small signals obscured by noise sources many times larger by locking into the
specific modulation frequency of your desired signal.
Oriel created an application kit (LIDA-SRS-KIT) using the Stanford Research Systems (SRS) Lock In
Digital Amplifier (LIDA) model SR810. The LIDA-SRS-KIT includes the chopper, chopper control, and
lock-in amplifier and readout (gauge or software) used in a typical experimental set-up and connects to
any BNC-ended detector. A typical setup is shown in Figure 1.
Figure 1: Typical experimental setup
In Figure 2, the Oriel model 75160NF chopper controller sits on top of a Stanford Research Systems
(SRS) model SR810 Lock-In Digital Amplifier (LIDA) instrument. The chopper is being driven at 30Hz
through the internal frequency generator of the SR810.
Figure 2: The LIDA-SRS-KIT
