POD31 is an audio demultiplexer designed to extract two groups of AES digital audio (four AES signals) simultaneously from an HD-SDI signal. A front panel switch selects either groups 1 and 2 or groups 3 and 4 for demuxing. POD31 has one HD-SDI input and two re-clocked HD-SDI outputs on rear panel BNC connectors. The demuxed AES outputs of the two selected groups also appear on BNC connectors located on the rear panel. Front panel status LED tallies indicate LOCK when a valid signal is applied at the input and whether audio is present in either of the two selected groups (AUD1 and AUD2). If a valid signal is not detected at the input, the ERROR LED will illuminate. The Group 3/4 LED illuminates if the select button is depressed.