MCS-IFB/MEA2100 Noise depending on "list mode"on or off

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Post  gerco Hassink on Wed Apr 04, 2018 3:51 am

We have MCS-IFB combined with 64 channel MEA2100 headstage with a weird noise problem. When using MEA 200/30 60 channels, the noise levels are extremely high compared to our old unit; 75-85 uV at SD 5.5 setting. This is with or without external reference and without stimulation. However, when we click on "list mode" and "download" in the channels tab of the stimulation add-on, noise levels drop to normal; meaning 10 uV for a 29000 series MEA ( 200/30 60 channels) or older and 30 uV for a 33000 series MEA (which is too high as well but for another topic). And in this last setting I'm not stimulating, just recording. What are we doing wrong?
MCS-IFB/MEA2100 Noise depending on "list mode"on or off Img_2010
MCS-IFB/MEA2100 Noise depending on "list mode"on or off Img_2011
kind regards

Gerco

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Post  Frank MCS on Wed Apr 04, 2018 9:09 pm

Dear Gerco,
I tried to reproduce this with a high noise MEA, but didn't see any effect when switching on the List Mode. Which MC_Rack version are you using? Could you send me your rack file (support@multichannelsystems.com)?

Frank
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Post  gerco Hassink on Wed Apr 04, 2018 9:55 pm

Hi Frank,

thanks for the quick response, the MC rack version is 4.6.2

I will send the file via mail

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