Thanks VE1BLL!
I will try the voltage divider first because it is cheaper than an attenuator. The results will be updated for discussion.
Here is my test with 1mV input square-wave.
Hi everyone,
I have just made an EEG recording device.
Now I need a calibration system which can generate sine/square wave of 50uV amplitude.
As far as I research on the market, there is no Signal generator can generate under 1mV for a <$1000 price.
Some one suggest me to connect [Signal...