44
6193-3201
4.2.3 Statistics
The Statistics webpage is used for advanced debugging of RM-90. This webpage details the
state of the RM-90 and its performance in the system.
4.2.4 Network Traffic Analysis
There are many devices and PC programs that will analyze performance of an Ethernet
network. Freely available programs such as Ethereal provide a simple cost effective means
for more advanced analysis. By monitoring traffic on the wired Ethernet, a better idea of
regular traffic can be discovered.
Network Analysis programs make configuration of a filter for the RM-90 a simple task.
4.3 Testing Radio Paths
The general procedure for radio range testing a link is fairly simple. Configure two units
to form a link using automatic radio rates. Install the Access Point at a fixed location. Take
a laptop computer and the Client to each of the remote locations, and analyze the link
using the Connectivity webpage. If a beacon is heard from the Access Point, the Client
will update its Connectivity webpage with the received signal strength of beacon mes-
sages from the Access Point.
The RX led on the Client should also be observed. If the RX led flickers red, then the
signal strength is weak. If the RX led is always green when a message is received, then the
signal is strong.
If the signal is strong enough, a link may be established, and the Connectivity webpage
of the Access Point may be opened. If the link is weak, the LINK led will go out, and the
remote Connectivity webpage of the Access Point will fail to load. Using this procedure,
the signal strengths of units at both locations may be analyzed, and traffic is sent between
the units whilst remote webpage’s are opened.
4.4 Utilities
4.4.1 PING
Ping is a basic Internet program that lets you verify that a particular IP address exists
and can accept requests. Ping is used diagnostically to ensure that a host computer you
are trying to reach is actually operating. If, for example, a user can’t ping a host, then the
user will be unable to send files to that host. Ping operates by sending a packet to a des-
ignated address and waiting for a response. The basic operation of Ping can be performed
by following these steps in any Windows operating system.
Click on the Start Menu and select Run. Type in “cmd” and enter, you should then see
the command screen come up. There will be a certain directory specified (unique to your
own pc) with a flashing cursor at the end. At the cursor type the word “ping” leaving a
space and the default IP address for the RM-90 at first startup.
This command would be written as Ping 192.168.123.123 then Enter to send the ping
command. The pc will reply with an acknowledgement of your command if your RM-90 is
correctly configured.
It is also possible to use the “ping 192.168.123.123 –t” command.
