CSP-GL01 Video Ground Loop Isolator The GL01 video ground loop isolator is a passive device which reduces ground loop interference with CCTV signals and can be easily installed in a new or existing system. This device is very useful when a video signal is transmitted via cable between points with different ground potentials (difference in ground potentials are typically caused by unbalance power line loads). BNC male to BNC female with mini cable on both sides Passive, no power required Eliminated picture tearing, cross talk and rolling Built in TVS (Transient Voltage Suppressor) for surge protection