4.0 Web Interface, continued
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704-939-B10-001 Rev. A5 (06/2019)
4.11.4 Spectrum Tool
Full-range display spanning 0 - 1005MHz, the Spectrum page provides a detailed, full-band capture analysis of the
DOCSIS Channels for the DM3X. This tool assists in identifying and troubleshooting common impairments throughout the
range of DOCSIS Channels. Navigate to the Tools menu item and select “Spectrum” in the drop-down menu to open the
Spectrum page.
Fig. 4-25, Spectrum Tool
Table 4-3, Spectrum Tool Buttons
Spectrum Tool Features
Feature
Type
Function
Live
Button
This provides a live view of the spectrum data.
Average
Button
This displays spectral data averaged from the last several background captures.
Last
Button
This displays the last capture.
Saved
Button
This displays the saved captures.
Aggregate
Minimum/Maximum Dropdown Menu
This drop-down menu allows the user to choose between displaying the
aggregate minimum and aggregate maximum of the RF samples.
Range
Dropdown Menu This drop-down menu allows the user to select the window’s span of
measurement - Full, 3 Channel, or 1 Channel.
Channel
Data
The channel number in the center of the display.
Frequency
Data
The frequency (in MHz) in the center of the display.
Restart
Button
This restarts the spectrum display.
Stop
Button
This stops the spectrum display from refreshing.
Max Hold
Button
This will mark the highest power seen. (Only applies to the “Live” view.)
Save 1
Button
Saves the current trace (1) and display.
Save 2
Button
Saves the current trace (2) and display.
Clear
Button
This clears the Max Hold, Save 1 and Save 2 traces.
