Extron Electronics IPL T SFI244 - Manual (Page 65)

Glossary
This section provides definitions of terms related to the IPL T SFI244.
10/100Base-T — Ethernet which uses Unshielded Twisted Pair (such as UTP - CAT 5)
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) — ARP is a protocol which assigns an IP address to a
device based on the device’s MAC or physical machine address.
Custom Web page — Any file that can be loaded into an IPL T SFI244 and served by the
unit’s internal Web server. A custom Web page can provide control of devices attached to
the IPL T SFI244 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 T SFI244, 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 T SFI244 functions like a little computer with a Web server — you can use it
for various Web tasks.
DHCP — 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 — A GC compatible package and includes the event script that controls devices.
Ethernet — 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 — A program that runs on an IPL T SFI244 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). GC performs this compilation. The
compiled result (.evt) is loaded onto the IPL T SFI244. 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 unit.
Floating — The condition of a device or circuit that is not grounded and not tied to any
established potential.
Global Configurator (GC) — A Windows ® program that, based on user input, creates
a GlobalViewer (GV). GC requests system information such as which devices you have
and your current list of IP addresses. With this information, GC creates a GlobalViewer
for your specific devices. GC also compiles the event scripts and loads the GV and event
scripts onto the box. When using GC, the user must specify the port number for each
device (for attached devices to be controlled, they must be on that port). In order for
multiple IP-Link
® boxes to appear in the same GV, all the boxes must be configured at the
same time, using GC.
IPL T SFI244 • Glossary 59