WESII User Manual
Manual-WESII-Rev1205A
Copyright © KBC Networks 2012
Page 21 of 48
www.kbcnetworks.com
Refresh:
This button refreshes the “bytes”, “Packets” and “Errors” information as
well statistics from the connected Client(s).
Antenna Alignment:
When a Host and Client are connected the interface displays an alignment tool
button on the Client unit. The WESII antennas need to be aligned to their respective
mate. This tool can be used to identify the optimal mounting alignment.
Connected Stations:
the number of connected devices is shown in parenthesis.
When a Client is connected to a single point Host/AP (or multiple Clients to a Ptmp
Host/AP), the MAC address(es), Signal Strength(s), TX Rate(s), TX CCQ(s), RX
Rate(s) and Channel Width(s) will also be displayed. These are used to identify if the
signal strength and data rates are sufficient for a wireless connection needed for a
constant stream of video. In the screen shot below the important details are
defined:
MAC Address:
connected Station / AP MAC address.
Signal Strength:
This is the RSSI (Received Signal Strength Indication) ranging
from 0-100. The RSSI, is the measure of the strength of the RF connection between
radios. The RSSI number in the screen shot above is ‘93’ with the numbers within
the parenthesis showing the RSSI’s for the vertical (92) and horizontal (91) portions
of the radio (ie. the 2x2 function of the MIMO). The vertical and horizontal RSSI
figures can be used if two separate directional antennas require individual alignment.
Certain variables exist by which this indicator is established. If line of sight,
interference or other adverse site specific conditions exist, the RSSI will be limited to
a much lower number on the 0-100 scale. The RSSI in the above screen shot was
attained when the radios were in very close proximity on a bench test. When
distance is increased between the radios and other variables are introduced the
number will drop significantly from the high numbers shown. A reasonable RSSI for
average deployments will be in the 40 to 50 range. A bare minimum RSSI that KBC
Networks recommends to maintain an RF link for constant streaming video is no less
than 20. If max TX and RX rates are established at lower RSSIs then the system is
performing as optimally as possible in a harsh RF environment.
Tx / Rx Rates:
The rate of transmission and reception is auto-negotiated with the
opposite radio in the RF connection. The system attempts to establish a link at the
maximum rate of 162Mbps (in 40 MHz bandwidth) however, if the environment
restricts a connection at the maximum rate, the radios will attempt connection at the
next lower rate. It will continue to auto-negotiate the rate until a connection can be
established.
