Synchronous Rectification

Hi all,

I had to implement a synchronous rectification ("Redressement synchrone in french") in Labview and I don't know how to do.
The aim is to do rectification with an acquisition which is in synchronization (or not) with a reference pulse.


Below the circuit in multisim :

4066BD_5V is a simple switch : Pulse high -> on (5V) Pulse low -> GND

The circuit works fine, I juste had to do this implementation in Labview.

Thanks for your help.