This expansion board allows the monitoring of embedded non-encoded linear PCM audio channels within an 3G/HD/SD-SDI video signal. The RM-HD1 card can be used with the RM-2S4, RM-2S10 and RM-4C8 monitors. The expansion board can extract any selected AES/EBU audio group (4 channels) from the video signal and pass them to the main Reference Monitor [more]