Historical graph thresholds

For historical graphs that have a severity associated with their value, the background of the graph is color coded according to the thresholds defined in the associated proactive profile. The profile used is the profile at a HUB or higher, based on the level of network hierarchy being viewed.

• For CMTS-based graphs, the parent HUB proactive profile is used.
• If no profile is found, the default profile is used.
• For CMTS channel-based graphs, the cable modem threshold values of the profile are used.

For more information about proactive profiles, refer to ServAssure® NXT Administration Guide.

Refer to Example Graphs for a picture of a graph with thresholds.

Graph customizations

You can customize the displayed graphs with the selections on the Display tab. The following image shows the Display tab.

Graph options can be specified on the Display tab. Frequencies can be selected from the drop-down and both historical channel percentiles and averages can be displayed for certain graphs. Upstream modulation can also be enabled and displayed for SC-QAM upstream graphs.

• Filter — Select frequencies from the drop-down.
• Only Show Selected Frequencies — Filters the Frequencies table and Graphs View. In the Channels tab, pre-selected MAC addresses are filtered and displayed in the table. On graphs, only the data related to the selected frequencies is displayed.
• Options
  • Show Points — Show data points on the lines in the graphs.
  • Scale Y-Axis — Show the values of the selected RF Parameter to scale.
  • Show X-Axis — Show date and time.
  • Show Legend — Show a legend of background colors below each graph.
  • Large Graph — Show larger graphs.
  • Show Data Gaps — Show gaps in data rather than a solid line.
  • Show Raw Data — Displays only non-distribution data.
  • Smooth Distributions — Smooths out distribution lines in the graph.
• Overlay — Display options for Upstream Modulation and Channel Distributions.
  • Upstream Modulations — Show or hide upstream modulation changes.
  • Channel Distributions — Turns distribution lines on or off on historical graphs. These distributions represent either 50% (average) or the 10th, 50th, and 90th percentiles for selected frequencies.
    • None — Displays nothing on a graph.
    • 50% — Displays the average on a graph.
    • 10/50/90% — Displays the 10th, 50th, and 90th percentiles on a graph for selected frequencies.

The following image shows the Channels tab.

• Modems — Each row is either a single "Modem + Channel" pairing or "Modem + Channel + IUC" triplet, and is the raw data shown in the graphs.
• CMTS — Each row is a CMTS channel, and is the distribution data shown in the graphs.
• IUC/Profile — The IUC/Profile column shown on both Modems and CMTS tabs will display a value only for OFDM/OFDMA channels. Channels that are not OFDM/OFDMA or do not have a profile will display a value of "N/A".

Special selection

Strumming or selecting raw data on the graphs causes the related entry in the table to turn purple, and vice-versa. The same is true for distribution data on the graphs, except it impacts the CMTS table.

Example Graphs

The following image shows an example of a line graph of downstream power on an SC-QAM channel. In this instance, Scale Y-Axis is not checked, and the severity threshold color bands are visible.

The following image shows the same graph, but this time Scale Y-Axis is checked, and the details of the individual lines are more visible.

The following image shows an example of a stacked graph of Modem Counts.

You can hover over a graph to display a tool tip that lists detailed information for the specific point on the graph.