DB9 Pin configuration
PIN 1 GND
PIN 2 Sync of source 1
PIN 3 RED out
PIN 4 RED in from source 1
PIN 5 Green in from source 1
PIN 6 Green out
PIN 7 Blue out
PIN 8 Blue in from source 1
PIN 9 Sync out
Source 1: Loop-through RGB/S input.
Source 2: Video input.
Gray:
Brown:
Red:
Yellow:
Green:
Blue:
Purple:
Orange:
Black:
RGB out: