The BG-50 provides multiple outputs of blackburst and composite sync for genlocking larger video systems. All outputs are derived from the composite video input signal, which can be from any source including "off tape." Black level can be set to 7.5 or 0 IRE. Looping video input with terminator ON/OFF switch. Desktop unit has 6 blackburst outputs. Rackmount unit has 8. Two sync signals are also available for output.