Extron electronic manual Glossary, B-2 IPL T CR48 Glossary

Glossary

Glossary

10/100Base-Tis Ethernet which uses Unshielded Twisted Pair (UTP - Cat 5, etc.) cable, where the amount of data transmitted between two points in a given amount of time is equal to either 10 Mbps or 100 Mbps.

Address Resolution Protocol (ARP) is a protocol which assigns an IP address to a device based on the device’s MAC or physical machine address.

Contact closure refers to an encapsulated switch containing two metal wires that serve as the contact points. When these contact points meet, it creates a complete circuit (e.g., ports 1-4 to ground on the IPL T CR48).

Custom Web page is any file that can be loaded into an IPL box and served by the IPL’s internal Web server. A custom Web page can provide control of devices attached to the IPL without use of the GlobalViewer® (GV) or Global Configurator (GC). This is true with or without an accompanying event script. Any number and size of graphics can be used, but if they are too large to fit on the IPL, you can write your Web page so that they can be served from another Web server. If you install Microsoft® Internet Information Services (IIS) on your desktop, you can serve any page on its hard disk. The IPL functions like a little computer with a Web server—you can use it for various Web tasks.

DHCP is the Dynamic Host Configuration Protocol (DHCP), which is a standardized communications protocol that enables network administrators to locally and automatically manage the assignment of IP addresses in an organization’s network.

Driver is a Global Configurator (GC) compatible package. It includes the event script that controls devices.

Ethernet is a network protocol that uses MAC addresses instead of IP addresses to exchange data between computers. Using ARP (see above), with TCP/IP support, Ethernet devices

can be connected to the Internet. An Ethernet LAN typically uses unshielded twisted pair (UTP) wires. Ethernet systems currently provide transmission speeds of 10 Mbps or 100 Mbps.

Event script is a program that runs on an IPL box, and issues queries and commands to the attached devices. Event scripts are written in the “Extron C” language (.sc), and compiled into an event script (.evt). The Global Configurator performs this compilation. The compiled result (.evt) is loaded onto the IPL box. The Extron C language is similar to ANSI C, with some differences. As long as event scripts are turned on, event scripts run continuously on the box.

B-2 IPL T CR48 • Glossary