The SD405A card is a one group muxer, designed to receive four mono or two stereo analog audio channels and embed these into a serial digital video signal at its' output.

The SD405A is designed to receive digital video signals transmitted over 75 Ohm coaxial cable (BELDEN 8281 or equivalent). An adaptive cable equalizer provides equalization for high-bit-rate digital data transmitted over a long transmission line.

The SD405A can be installed in any position in the MF100 or MF104 Serialboxx frame. The TB102 termination assembly (included), mounts on the rear of the MF100 or MF104 frame directly behind the slot where the SD405A is installed.The balanced analog audio input signals appear on Phoenix pluggable screw terminals on the TB102. The 75 Ohm SDI input and output signals are made via the BNC connectors.