Protecting the trigger inputs
Posted: Mon May 07, 2012 5:55 pm
Hello,
We are going to send 4 signals from the digital output pins of a microcontroller along with the 8 bit code (as 8 digital output pins)
for pause-on/pause-off function as described, totally 12 triggers, so to synchronize the 4 signals with the EEG data channels.
The output pins can source (provide positive current) or sink (provide negative current) up to 40 mA (milliamps) of current to
triggers, at 0V or 5V. Is there any possibility to damage the USB receiver through this task? If there is, how can i trigger
trigger the USB receiver without faults through the microcontroller?
Thank you , Clyde
We are going to send 4 signals from the digital output pins of a microcontroller along with the 8 bit code (as 8 digital output pins)
for pause-on/pause-off function as described, totally 12 triggers, so to synchronize the 4 signals with the EEG data channels.
The output pins can source (provide positive current) or sink (provide negative current) up to 40 mA (milliamps) of current to
triggers, at 0V or 5V. Is there any possibility to damage the USB receiver through this task? If there is, how can i trigger
trigger the USB receiver without faults through the microcontroller?
Thank you , Clyde