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Use of Optocoupler for differential signals

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gopal_amlekar

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Hi,
I want to interface a shaft encoder to a MCU. Now the shaft encoder operates at 12V while the MCU at 5V. The best way I thought, is to use a digital opto-coupler so the input diode is connected to shaft encoder output signals and optocoupler output is connected to MCU.
I am confused in connection of shaft encoder to the optocoupler input diode.

The encoder has a differential signal output (driven internally by 26LS31). Specifications of the shaft encoder are **broken link removed**.
So what I am thinking is connect the non-inverted (K1, for e.g.) output to Anode of optocoupler diode through a resistor and connect the inverted (K1 bar) output of encoder to the cathode of optocoupler diode.
Is it the right way to interface differential signals? Or I should use two different optocouplers for this purpose?

Can anyone please advise?
Thanks....
 

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