Specifications

Glossary 73
Networking Alpha Signs (9700-0112C) October 8, 2003
First Unit to Ship.
Gateway
Product name for an Adaptive interface from a PLC to a sign.
graphic
On a sign, a picture consisting of a pattern of pixels often displayed in one position, such as a company logo or
an identifiable product (for example, a car, light, or shoe). Displays a single bitmapped image.
Group
One or more sites in AlphaNET or Smart Alec software.
GUI
Graphical User Interface. A program interface that takes advantage of the computer’s graphics capabilities to
make the program easier to use.
hazardous locations
Locations that contain enough hazardous materials to create an explosion, according to National Electrical
Manufacturer’s Association (NEMA) standard.
indoor character size
2” and 4” high characters are commonly used in most interior applications. In warehouses or manufacturing
environments where signs are to be viewed from greater distances, 4" or 7" characters work best.
indoor locations
Areas protected from exposure to the elements. Viewing distances are generally shorter.
industry automation
Any type of machine process in which a controller (PLC) contains data that will be used on an EMC or
electronic display.
infrared
A form of radiation with a wavelength between 750 and 100,000 nanometers, which is above that of visible
light and below that of microwaves. Infrared sensors are used in night-vision goggles and sensors. Infrared light
can be used to send signals wirelessly back and forth between computing devices.
integrated circuit
A small device that performs various electronic tasks. Also known as a chip.
Internet
The collection of networks and gateways that use the TCP/IP suite of protocols. Written in lowercase, it is an
abbreviation for internetwork.
Internet address
A 32-bit address assigned to hosts using TCP/IP.
IP
Internet Protocol. A TCP/IP protocol that provides datagram delivery of messages.
IP address
A 32-bit address assigned to hosts using TCP/IP.