Got it now! I realized I purchased the wrong device. I should have bought a HDMI Splitter 1 In to 2 Out instead of a HDMI Switch 3 In to 1 Out!
Honestly, I didn’t understand the differences among switcher, splitter and matrix.
So here are the definitions:
Splitter is for one input to multiple outputs (such as one cable box to multiple TVs), such as http://www.amazon.com/gp/product/B00263D7A4/ref=cm_cd_asin_lnk
Switcher is for multiple inputs to one output (such as cable, DVD & satellite boxes to one TV), such as http://www.amazon.com/gp/product/B00342Z8D0/ref=cm_cd_asin_lnk
Matrix is for multiple inputs to multiple outputs, such as http://www.amazon.com/gp/product/B00263YDCK/ref=cm_cd_asin_lnk
Thanks again for your help!