selection, the format that is corresponded with the input HD SDI signal within the format according to the selected bit by S704 and S705, is selected and is set. The DPR-151A board mounts the switching regulators of the +3.3 V, +1.2 V and _2 V and the series regulator of the +2.5 V as a power supply circuit. These voltages required as the power supply for ASIC are generated by DC-DC converting the +5 V and _5 V voltages that are supplied from the mother board of PFV-HD50/HD300.
