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Set up X and Y axes
Last Updated: July 07, 2026

You can specify the range of displayed values on the X and Y axes.

  1. Set up your X-Axis.
    There are two ways to choose from: Custom or Low Split/Mid Split/High Split.
    • Custom

      Enter start and end values for the frequency range you want displayed, in MHz.

    • Low Split/Mid Split/High Split

      Low Split, Mid Split, and High Split represent preset frequency ranges. By default, the low split is 0-65 MHz, the mid split is 0-100 MHz, and the high split is 0-220 MHz. The actual values are set in REALTIME_ANALYSIS tab of TenantConfig. Refer to ServAssure® NXT Design and Installation Guide for details on modifying these setting.

  2. Set up your Y-Axis.
    There are two options, Bin Size or Channel Width, and the Custom setting is always available.
    • Bin Size

      Bin size is calculated using the values specified for the Start and End frequency, and the number of samples selected with Samples in the Capture controls.

    • Channel Width

      Click Info in the general controls to view info about the channel, including the width.

    • Custom

      Enter start and end values in relation to your choice of Bin Size or Channel Width.

    The label for the Y-axis is updated to reflect your choice in how the power density is calculated.
  3. Click Reset for either the X-Axis or the Y-Axis to have the ranges automatically determined, based on the data received by the CMTS.
Upstream Spectrum capture window with Y-axis label, X-axis, and settings for each highlighted.
The selection and axis labels are in agreement.
1X-Axis specification and labels
2Y-Axis specification and labels