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Triggering with BioSemi Active 2

Posted: Tue Oct 18, 2016 6:25 pm
by wmeinhold
Hi, I am new to this system, and have a question about the trigger inputs.
The trigger box sets the input pins to 3.3V when nothing is connected.
As far as I can tell, the only way to change this is by shorting the inout so that the voltage across the pins goes to 0.
I would like to trigger off of the signal from an accelerometer, or really just any signal, is it possible to do this?

Thank You

Re: Triggering with BioSemi Active 2

Posted: Wed Oct 19, 2016 3:49 pm
by Coen
The trigger inputs have an internal 10 kOhm pull up resistor. Your trigger signal must be TTL level (Low = 0V, High is 3.3-5V), and must be able to drive the 10 kOhm resistor (be able to pull the input below approx. 1V).

Best regards, Coen (BioSemi)