... voltage regulator, 2 channels DB-9 serial port connector, 1 USB connector, switches and LED which is ... -9, J3) ,or USB port(J25)2 connectors(DB-9, RS-232) , 1 USB connector4 serial interface (2 ... P0 port, the LED nixie tube may not display expected result.Serial interface : 4 serial interface, “1” &” ... supports Optrex DMC16207 or standard parallel LCD port of similar products.How to configure DS5250 ...