Multichannel Systems MEA_Signal_Generator Manual - Manual (Page 12)

MEA Signal Generator
8
Short circuit
Please consider the different levels of amplitudes in electrode displays in direct vicinity side by side
regarding to the gold contacts of MEA-SG, but not to the electrode displays. The amplitude
alternates in a range of 100 % and 50 %. If there is a short circuit between neighbor pads of
gold contact, all electrodes will show the same averaged amplitude. You can see the changing
amplitudes in MC_Rack data display best in data row four and five.
Gold Contact Pads
For information: If you ground one of the electrode pins with a small amplitude, all electrodes
with small amplitudes will be set to zero. If you ground one of the electrode pins with 100 %
amplitude, its heights will be cut in half.
In MC_Rack data display channel 66 get saturated. Check whether this channels is grounded.
If not, may be the electrode pin or the contact pad of your amplifier is defective. Please see
chapter "Troubleshooting".