Optoma EH7700 User Guide - Page 36

User Controls DISPLAY | PIP English 36 Screen  Single: Projection single screen.  P IP Window: Main Screen is large screen; PIP Screen is small and displays in the corner of the main screen.  S plit Screen: Main Screen and PIP Screen equal size and side by side. PIP Location Choose the PIP screen position on the display screen. PIP Size Choose the PIP size from 1/16, 1/25 or 1/36 on the display screen. PIP Source Choose the PIP source to switch PIP screen source. Swap Press to swap main screen and PIP screen. Some source/signal combinations may not be compatible with PIP function. Please refer to the table below: VGA-2 HDMI-2 YPbPr Static Images Full Motion Video Static Images Full Motion Video Video Static Yes - Yes - - VGA-1 Dynamic - - - - - Static Yes - Yes - - HDMI-1 Dynamic - - - - - BNC Static Yes - Yes Yes - (RGB) Dynamic - - Yes Yes - Video Dynamic Yes - - - - S-Video Dynamic Yes - Yes Yes - If you still experience issues, try altering the refresh rate or resolution of one or more of the source devices.