Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-E-G/A User Manual
Rev.
2.16
www.weidmuller.com
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The third screen shot shows the average Channel Utilisation for each minute up to one hour. It will also give a running
average for the total number of minutes up to 59 minutes.
Figure 72 - Channel Utilisation Minutes
The next screen shot shows the running radio receive noise floor average for each minute up to 59 minutes.
The Channel Survey page also shows two other screen shots (not shown here) which indicate the Percent Channel
Utilisation and Noise Floor in one hour intervals. The screens will only show the last 24 hour period.
4.3 - Custom Survey
Custom Survey is essentially the same as the Channel Survey (explained in the previous section) except the three
channel Utilisations can be turned on or off thus showing the different amount of traffic related data.
Percent Radio TX –
Any transmitted messages from the radio to other devices.
Percent Radio RX –
Any DSSS or OFDM messages received by the radio (basically any Standard Wi-Fi data packets
from either WEIDMULLER or competitor radios).
Percent Busy (CCA or Noise)
– Clear Channel Assessment is the detection of any ongoing transmissions or noise, i.e.
Microwaves, 2.4Ghz FHSS, Cordless Phones, RC devices, etc.
By configuring the different chart options we can get a clear idea of the amount of data being transmitted, received and
the amount of other noise that can be heard at the radio.
Configure what is to be logged on each chart, select a time interval and save changes and the charts will then be
displayed below the settings. Click the button again to manually redraw the graphs.
Each graph will display a Percent Channel Utilisation using the selected criteria and time interval (Seconds, Minutes or
Hours).
Example One.
Chart one shows the amount of data that is being transmitted over a Wi-Fi link and chart two shows the amount of data
being received from all sources (Wi-Fi and other noise). We can see from this that there is very little outgoing data but you
can see a constant stream of data being received.
Figure 73 - Custom Survey 1
