[BLO-V2] Protection for misconnections
If the all the input channels of the board are connected to a high level and the RTM outputs are all parallel terminated to 50 Ohms the 24V power supply will blow up.
To avoid this, some control must be added in the FPGA, first to detect and then to report via I2C. A protection fuse is currently not installed in the 12V rail. It's needed.