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Message ID: 6696     Entry time: Tue May 29 00:35:57 2012
Author: Den 
Type: Update 
Category: PEM 
Subject: guralp readout box 

I measured the frequency response of the Guralp readout box and noise by providing sin signal of amplitude 50 mV at 15 Hz for channels 1-3.

1_3.png

It turns out that the gain is ~250, while my liso model simulated it to be 200. This is because it is hard to approximate AD620 amplifier.

Noise of the box does not seem to be too bad at low frequencies.

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