ProSoft Technology RLX2-IHNF-WC - Manual (Page 199)

RLX2 Industrial Hotspot Series
ProSoft Technology, Inc. Page 199 of 212
June 15, 2015
G
Gain
The amount by which an antenna concentrates signal strength in a wireless network.
Gateway
In wireless terms, a gateway is an access point with additional software capabilities such
as providing NAT and DHCP.
Guard Interval (GI)
An interval of time between data packet transmissions. The guard interval time for
802.11a/b/g systems is fixed at 800 microseconds. 802.11n devices can also use a 400
microsecond guard interval, falling back to 800 microseconds if excessive data
corruption is detected.
H
Half-Duplex
A communications circuit or system designed to transmit and receive data, but not both
simultaneously. CB or walkie-talkie radios are an example of a half-duplex
communication system. Either parties on a radio conversation may talk or listen; but
both cannot talk at the same time without corrupting each other's signal. If one
operator is "talking", the other must be "listening" to have successful communication.
Hz
Hertz. The international unit for measuring frequency equivalent to the older unit of
cycles per second. One megahertz (MHz) is one million hertz. One gigahertz (GHz) is one
billion hertz. The standard US electrical power frequency is 60 Hz. 802.11a devices
operate in the 5 GHz band; 802.11b and g devices operate in the 2.4 GHz band.
I
IEEE
Institute of Electrical and Electronics Engineers, Inc. IEEE is a professional organization
with members in over 175 countries and is an authority in technical areas such as
computer engineering and telecommunications. IEEE developed the 802.11
specifications.