Testing without physical channel

Hi,
I am developing a Labview VI to control a DC motor.
I am using DAQmx and I will use the timing block and the create channel one.
I would like to know if I could test the VI without having the physical channel like with a pulse generator (square waveform).
Thank you very much,
Alexander

An encoder will generate voltage pulses and is linked to the acquisition card.
I am developing the program but I don't have the encoder with me.
If I link the square waveform to the "Create channel" block from DAQmx, it won't link.
It will link if I wire the physical channel, witch is not with me.
Thank you,
Alexander 

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