Flash Unit Operation Questions Q: What does it mean if the modeling lamp in my unit flickers randomly, even when Im not firing the light?
Several things can cause flickering of the modeling lamp. As the modeling lamp circuitry is sensitive to ac line noise, noise caused by large air conditioning units, nearby fluorescent lighting, and electronic dimmer circuits may produce flickering. The problem can also occur when circuits are overloaded (perhaps with a large number of lights connected to a single circuit). Additionally, flickering can occur when different cables and cords are run too closely together, or when excessive extension cords are used. To prevent flickering, be careful not to overload your power circuits. When using a remote control, do not route the remote cable in close proximity to power cords. If you use an extension cord that is 25 feet or longer, use a 16-3 or larger gauge wire (3 #16 AWG wires) extension cord. Smaller numbers indicate a larger wire (go figure), so a 14-3 extension cord (3 #14 AWG wires) is larger than a 16-3 cord.
