Hi...can anyone please help me to reduce dc level of my spo2 signal from 7v to 0v level???
it giving me such hard time since when i tried to display my signal in NI elvis, it just show my signal on 2v volt/div but the signal just look in linear line.when i tried to reduce volt/div to 50mV, my signal goes off n not showing in NI ELVIS...vpp for my signal only about 100mV.
my guess is try to reduce the dc level by using the AD620 by connecting +in with my signal n -in with dc +5v...it does reduce dc level..but the phase of my signal is totally change and disturbed..
can anyone help me with this problem..sory for my poor english...