The AMX-1881 is a high-quality interface which embeds up to eight AES 24-bit 48 kHz digital audio signals into a single HD/SD serial digital video signal. The module offers audio and video signal presence detection and reporting, and local or remote configuration and control. A unique feature is its ability to embed timecode, a serial RS-422 data signal (including Dolby metadata) and two GPI status signals into the video signal. The card also serves as a VLI and AFD inserter for an SD or HD signal. The card has built-in audio tone, timecode and video color bar test signals. By combining AMX-1881 embedder and ADX-1881 de-embedder cards, a full duplex link may be established.