Current noise source for lock-in?

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Current noise source for lock-in?

From: Steve J. Noll
email: snoll@advancedphotonix.com
Model: 5210
Date: 17/04/03

Comments

Is there a simple way to generate a known amount of noise current for the 5210 lock-in to read? I have tried using resistors but the readings don't make sense (or, I don't know what I'm doing.) I would like to generate noise currents that these lock-ins could read in the order of 10e-13 to 10e-15 A/rt-Hz at center frequencies up to 10 KHz.

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