I'm using an instrumentation amplifier to amplify the signal from a load cell. You can see a zoom-in of the amplifier output in the two attached files. The general 50mV noise doesn't bother me so much, but every 2 - 3 msec. there's an alternating +/- spike that's around 120mV peak-to-peak. scope_1.jpg zooms in on one of these spikes. Maybe it's so fast I don't have to worry about it (I'm averaging 50 samples over 5 msec. to get my value), but I was wondering if there's a way to filter it out anyway. Thanks for your help.
170.4 KB Views: 22
177.2 KB Views: 23