Connecting your Graphic Display Annunciator to other systems usually requires an interface between the output signals of the driving system and the graphic display lamps. CDT developed the Graphic Interface Unit (GIU) to solve interface problems. The GIU is a microcontroller-based interface circuit board. It mounts on the reverse side of the graphic display and handles interface requirements in software. Features of the GIU include:

• up to 128 inputs, expandable to 256
• optional RS-232 interface
• closed contact switching or switching transistor alarm inputs
• individual inputs/outputs on board
• multiple lamp capability
• software-controlled lamp interaction
• off-the-shelf software available
• annunciator programming available

GIU