Each cable is tested to ensure that there are no short circuit or potential problems before shipping
The Sound Devices / Video Devices XL-LB2 equivalent cable comes with a FGG 0B 5 pin Lemo connector on one end and two BNC connectors at the other - one in and one out.
The cable is used for time code jamming of BNC-equipped A/V equipment that has SMPTE time code.