User's Manual

11.7 G
Gain
The ability of a device to amplify a signal. Gain is the ratio of
output power divided by input power, usually expressed in decibels
(dB). Gain can also be measured as an absolute value, referenced
to an input signal of one milliwatt (dBm). For antennas, gain
measures the ability of an antenna to focus a signal and is
expressed in dBd (half-wave dipole reference) or dBi (isotropic
radiator reference).
GPS
Global Positioning System. EION Broadband Wireless Access
Systems installers may use GPS devices instead of maps and
compasses to locate their unit and orient it toward another station.
11.8 I
Ice loading
A problem of antenna operation in cold countries. Ice collects on
the antenna and degrades its performance.
IEEE
Institute of Electrical and Electronics Engineers.
Image
An image is a collection of configurations or settings for a
particular device. The System I mage File in the Access Point
contains a collection of configurations used when the unit is
rebooted.
Interference
Any signal that tends to hamper the reception of a desired signal.
This is equivalent to jamming, except that interference is not
hostile.
IP Address
A number assigned to a network node, domain, or subdivision. An
IP Address consists of four numbers in the form nnn.nnn.nnn.nnn.
The f irst two identify the network and subnetwork, and the last
two identify unique nodes within the network. No two units may
possess the same I P within a LAN.
IP Filter
Internet Protocol filtering allows the system administrator to
permit only certain IP addresses to receive or send data using a
CPE. This keeps non-subscribers from using the network.
ISM
Industrial, Scientific, and Medical. This is the family of license
exempt radio bands in North America and some European
countries. These are described in part 15.247 of the FCC regulation
that defines the parameters for use of the I SM band in the U.S.,
including power outputs, spread spectrum, and noninterference.
11.9 L
LAN
A localized network linking computers, servers, printers and other
peripheral devices. Typical configuration is within buildings or
between closely situated buildings.
LibraPlus 5860 User Guide Appendix B: Def initions: G Page 83 of 95