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7 Troubleshooting the MEA Amplifier
It is possible to control some functions of a MEA amplifier with a MEA-SG. Please read also chapter
"Troubleshooting" in MEA Manual. Most of the problems with MEA-Systems are rare, and most are
minor problems which can be easily avoided and solved. If a problem persists, please contact your retailer.
With a MEA-SG you are able to check the electrode pins of your amplifier and the general behavior due
to grounding and shielding the system.
7.1 Grounding and Shielding
Noise level
After mounting a MEA-SG, connecting it to ground, but before switching it on, you first see the noise
level 50 Hz hum. The level should be comparable on each channel, not too big and without additional
interference. If the overall noise is too strong, shielding and grounding of the setup is not sufficient.
Check the grounding cable and improve the shielding. The easiest way is to cover the MEA amplifier
with aluminum foil and connect the foil to any metal part of the amplifier. Another possibility is shielding
with a Faraday cage.
This is how an ideal noise level looks like.
