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Static Pseudowire capture
Last Updated: July 07, 2026
Static Pseudowire capture lets you perform frequent captures — up to the device-supported frequency span and refresh intervals, as fast as 50ms — depending on the channel.
NOTE: A fast interval and high bin size requires higher network I/O between RPDs/RMDs, ServAssure L2TP Receivers, and various ServAssure NXT nodes. Each active capture can reach as much as 155Mbps, depending on hardware capabilities present.
For more information, refer to Capture controls — Static Pseudowire mode.

To perform a static pseudowire capture:

  1. Open the US Spectrum Analyzer application; see Access upstream spectrum analyzer.
  2. Enter a CMTS name and channel string in the format like: <CMTS name>@<channel string>. You can also select an item from Search History as described in Search channel.
  3. Select Static Pseudowire from the Mode drop-down menu.
  4. Specify a start and end frequency. Refer to Capture controls — Static Pseudowire mode for details.
  5. Your Domain is automatically set to Frequency.
  6. Set a Marker Width value.
  7. You can optionally set one or more markers, as described in Set markers.
  8. Specify a value for Service Identifier.
    Refer to Service Identifier for options. Any is the default option.
  9. Specify a value for Capture Interval between 0.05 and 1 second.
    Refer to Capture Interval for details.
  10. Optionally, you can specify a custom range for the X and Y axes, as described in Set up X and Y axes.
  11. Press Play to start the capture.
  12. Extend analysis time if needed. See Extending analysis time.