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I am using a FX2N PLC with transistor output (Source mode). I am using it to generate variable frequency up to 15kHz. The rise time of the pulse is 0s. My problem is with long fall time of the pulse. At high frequency the pulse dose not reach 0v before another one is generated.
I have added a pull-up resistor to increase current up to 200mA, but the fall time of the pulse has not improved as much as I like.
Any one have any ideas on how this signal can be "squared up"?
Any help will be appreciated. Thank you.
I have added a pull-up resistor to increase current up to 200mA, but the fall time of the pulse has not improved as much as I like.
Any one have any ideas on how this signal can be "squared up"?
Any help will be appreciated. Thank you.