Glossary - Extron electronics IP Link IPL T CR48 User Manual

Glossary

This section provides definitions of terms related to the IPL T CR48.
10/100Base-T
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)
a device based on the MAC or physical machine address of the device.
Contact Closure
contact points. When these contact points meet, it creates a complete circuit (for example,
ports 1 through 4 to ground on the IPL T CR48).
Custom web page
unit's internal web server. A custom web page can provide control of devices attached to
the IPL T CR48 without use of the GlobalViewer
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 CR48, you can write your web page so that
they can be served from another web server. If you install Microsoft
Services (IIS) on your desktop, you can serve any page on its hard disk. The IPL T CR48
functions like a small computer with a web server — you can use it for various web tasks.
DHCP
communications protocol that enables network administrators to locally and automatically
manage the assignment of IP addresses in a network for an organization.
Driver
Ethernet
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
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 is loaded onto the IPL T CR48. 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.
Global Configurator (GC)
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, you 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
units to appear in the same GV, all the units must be configured at the same time, using GC.
Ethernet that uses Unshielded Twisted Pair (such as UTP - CAT 5) cable,
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An encapsulated switch containing two metal wires that serve as the
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Any file that can be loaded into an IPL T CR48 and served by the
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Dynamic Host Configuration Protocol (DHCP), which is a standardized
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A GC compatible package. It includes the event script that controls devices.
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A network protocol that uses MAC addresses instead of IP addresses to
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A program that runs on an IPL T CR48 controller, and issues queries and
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A Windows
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ARP is a protocol which assigns an IP address to
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(GV) or Global Configurator (GC). This is
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program that, based on user input, creates a
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IPL T CR48 • Glossary
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