Analysis of Mimomax Captures

Mimomax radios produce the best debugging data available to the customer that I have seen on any radio so far, and you can gain some excellent insights as to what is happening at your sites RF wise by looking at them.  Mimomax  have some tools that will produce some graphs and they are all too happy for you to send them captures and they will provide you with some graphs and commentary as to what they think is going on.  However they are unlikely to give you the tools to generate these graphs, as they like to know their customers issues and to some extent don't want people to potentially come to the wrong conclusion by looking at data they might not fully understand.  I'm ok with that, but I still wanted to analyse the data without having to wait a day or two!  So I have whipped up a few Octave scripts to do a similar job.

First the splitter: The captures.csv file is a series of events, and I find it easier to focus on one event at a time, so I decided to first split out all of the events into individual files. Each file is tagged with the date, time, and type of capture (eg CRC_FAIL, RETRAIN etc). Simply plop the splitter.m file into the same directory as your captures.csv file, navigate to this directory in Octave, and execute the command splitter 'captures.csv'

Next you plot the event that you are interested in using the plotter.m script. For example plotter '2015.07.20 Wed 14.25.33_4_RETRAIN'

Some sample output:

A healthy looking constellation

A healthy looking constellation

The above is a constellation map of a radio running at QAM64, note that you can also see the QPSK there are well which I suspect is used for setup and constant fine tuning information.

The following graphs are from a link that developed an antenna fault, which turned out to be a faulty internal joint that occasionally flexed in the wind, with sever degradation to service when it did!

Intermittent antenna fault

Intermittent antenna fault

 

Intermittent antenna fault

Intermittent antenna fault

Intermittent antenna fault

Intermittent antenna fault

| September 29th, 2015 | Posted in Networking |

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