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1.)Hello,Is this connection of the 7i96 inputs identical / similar for the 7i95T?

2.)What is the connection diagram for MPG ENCODER INPUTS (7i95T)?

I have a problem - in the manual for the 7i95T (page 17) it says:

" MPG ENCODER INPUTS
Standard 7I95 firmware provides 4 quadrature MPG encoder inputs on isolated
inputs 0 through 7. Since the input threshold on isolated inputs is about 3V, its best to use
sinking inputs (with the input common terminal tied to +5V) with TTL output level MPGs." 

Isn't that sourcing input?

Thanx