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Remote Spectrum Client

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  • Remote Spectrum Client

    Here are some instructions on the RF Client

    Open the Remote Spectrum client and enter the host name or IP, the port (normally 8080 though you can set it to something different), the username and password. Once logged in, you will see a blank RF Inspector client graph.

    Click in the white space at the top and enter a modem IP address. This starts the monitoring of this modem. If you do not see anything, try changing the vertical center to approx -10. Adjust this positive or negative as necessary to see the approximate vertical center of the graph. You can compare the modems by entering in another IP in the white section of #2. The graph will show you both #1 (blue lines) and #2 (green lines).

    The following controls work similar to zoom settings and centering settings.

    H. Unit – number of horizontal units that show on the screen
    V. Unit – number of vertical units. The higher the number, the more units.
    V. Center – the number used to center the vertical of the graph (-20 is a good place to start)
    H. Center – the number used to center the horizontal of the graph.

    On the right side of the top section, are the Refresh and Mode buttons.

    You are able to set the Refresh to either 300, 500, 1000, 1500, or 2000 milliseconds.

    You can change modes from live to minimum or maximum. Live is the default setting.

    Remote Spectrum calibration is intended to be done by calibrating to another meter that has been calibrated. Those four numbers would be come from the trusted monitor and represent the frequency(in MHz) and amplitude (in dBmV) of two points on the waveform. Technically, any two points should work, but you will get much better results if you choose two points that differ in amplitude as much as possible (their proximity in frequency is not particularly relevant). For that reason we advise people to use a floor (low amplitude point) and a ceiling (high amplitude point).

    The basic process goes something like this:
    You select "Calibrate" from the menu.
    You enter the IP address of a modem that supports full spectrum capture and start monitoring it.
    You click the start button in the Calibration window on the right.
    Enter the four values as described above.
    At this point, it's necessary to wait for about 10 seconds. The newest version has a built in timer, the earlier versions of the client does not enforce this.
    Then you can click the test button to see what it will look like when it calibrates using these values.
    When you're satisfied with the results, click save. If you are out of the graphs range, an error will come up at the bottom left of the page stating that the calibration could not be done.
    Last edited by gtober; 12-15-2014, 10:44 AM.