ProSoft Technology RLXIB-IHA-A - Manual (Page 116)

Glossary of Terms RLXIB-IHA ♦ 802.11a
User Manual RadioLinx® 802.11a Industrial Hotspot
Page 116 of 123 ProSoft Technology, Inc.
July 25, 2013
Remote Access Point
One of a number of secondary access points in a wireless network that uses
WDS to extend its range. Remote access points (sometimes called relay access
points) connect to a master access point.
Remote device
Devices connected remote radios
Repeater
A Repeater is a device used to extend the range of a Wi-Fi signal. Placed at the
edge of signal reception, a repeater simply receives and re-transmits the signal.
RS-232
Recommended Standard 232; the standard for serial binary signals between
DTE and DCE devices.
RTU (Remote Terminal Unit)
Modbus transmission mode where each eight-bit byte in a message contains two
four-bit hexadecimal characters. There are two transmission modes (ASCII or
RTU). The main advantage of the RTU mode is that its greater character density
allows better data throughput than ASCII mode for the same baud rate; each
message is transmitted in a continuous stream (See also ASCII, above).
S
Sector Antenna
An antenna type that radiates in only a specific direction. Multiple sector
antennas are commonly used in point-to-multipoint situations.
Signal Diversity
A process by which two small dipole antennas are used to send and receive,
combining their results for better effect.
Signal Loss
The amount of signal strengt
h that’s lost in antenna cable, connectors, and free
space. Signal loss is measured in decibels. Also referred to as gain loss.
Signal Strength
The strength of the radio waves in a wireless network.
Simplex
A communications circuit or system designed to either transmit data or receive
data, but not both. Broadcast television is an example of simplex communication
system. A television station sends a TV signal but cannot receive responses
back from the television sets to which it is transmitting. The TV sets can receive
the signal from the TV station but cannot transmit back to the station.