RobertCX
Affina Pro control board
The most interesting part of this unit, this board is common to most modern Ferrograph displays, including public transport information displays. It is far more sophisticated than the good old FDS-101 that I am used to working with, and is based on a H8 microcontroller, with 1MB flash and 128KB RAM; message data is presumably stored in the flash for non-volatility. The DIP switches can be accessed through a hole in the rear of the casing, but other controls and displays are hidden, so once assembled, you cannot access the reset button or the 7 segment display or comms LEDs.
The board provides lots of interfaces, including both external and internal temperature sensors, ambient light photocell, impact sensor (to detect vandals beating the hell out of the unit, I presume), several comms ports, GPIO, and even an unpopulated audio amplifier section. There's also a handy diagnostic 7 segment display and LEDs for comms activity (though the TX LED indicates data being received by the unit, and the RX LED presumably indicates data being sent). In this particular unit, there is no battery fitted for the RTCC, and the temperature sensor calibration pots are also omitted, as they are presumably not used for this internal display.
Affina Pro control board
The most interesting part of this unit, this board is common to most modern Ferrograph displays, including public transport information displays. It is far more sophisticated than the good old FDS-101 that I am used to working with, and is based on a H8 microcontroller, with 1MB flash and 128KB RAM; message data is presumably stored in the flash for non-volatility. The DIP switches can be accessed through a hole in the rear of the casing, but other controls and displays are hidden, so once assembled, you cannot access the reset button or the 7 segment display or comms LEDs.
The board provides lots of interfaces, including both external and internal temperature sensors, ambient light photocell, impact sensor (to detect vandals beating the hell out of the unit, I presume), several comms ports, GPIO, and even an unpopulated audio amplifier section. There's also a handy diagnostic 7 segment display and LEDs for comms activity (though the TX LED indicates data being received by the unit, and the RX LED presumably indicates data being sent). In this particular unit, there is no battery fitted for the RTCC, and the temperature sensor calibration pots are also omitted, as they are presumably not used for this internal display.