The display system is controlled serially and may be daisy-chained to minimize wiring. Each digit is 5.5" tall with an effective viewing angle of 40 degrees off axis. High intensity 2000mcd light emitting diodes yield over 200 foot-candles for excellent viewing even in sunny daytime lighting conditions. The serial interface supports a variety of speeds and protocols as well as individual addressing for special applications.
The solid state microcontroller based display system uses a serial port interface and operates from a nominal 24 volts DC at 0.5 amps. The maximum voltage is 35 volts DC. The waterproof enclosure weighs 24 lbs, measuring 16" x 14" x 6" with an 8" x 13" LEXAN window. It is guaranteed to operate from -40 to 85 degrees Celsius. The circuitry is protected with a replaceable internal 1.5 amp fuse and an inline diode for polarity reversal. The signal input is RS-232 switch selectable baud rate and protocol 2.4 - 19.2kB, 7/8 bits, with ODD/EVEN/NONE parity. The switch can select 1 of 7 addresses in addition to broadcast mode.