Product picture - Link Electronics 812-OP J Closed Caption Decoder, Source ID and XDS Ratings Monitor - Composite, NTSC PAL, RS-232, Rackmountable Link, Electronics, 812-OP, J, Closed, Caption, Decoder, Source, ID, XDS, Ratings, Monitor, Composite, NTSC, PAL, RS-232, Rackmountable Click the image to close this page