Closed caption decoder accepts HD/SD SDI transport streams with embedded closed captions from either VBI (line 21/22) or VANC (SMPTE 334 caption data packet, CDP) and decode them. The captions will then be burnt into the outgoing 3G/HD/SD-SDI stream so that the captions now appear during active video. Captions which appear in active video are called open captions. The captioning channels that can be decoded are CC1, CC2, CC3, and CC4. Every effort is made to keep the latency between the open and closed captions to a minimum. The decoder options can be viewed on the front panel 40 character (2-line) LCD display. A front panel navigation switch is used to scroll through the menus and select which of the caption channels that is to be displayed. The navigation switch will also access the LEI-599 setup menus.