Dear NI Engineers
 
I'm using the Counter/Timer input channel of BNC2110 terminal block with PCI-6713 board to generate waveform according to the external TTL signal. 
 
By the way, I want to know the impedance gain of Counter/Timer input channel of BNC2110 with PCI-6713. 
 
I'm looking forward to getting the answer. 
 
Thank you.