New in Release 01-40
In earlier releases, the DSO band scan measures and displays interference for the channels in the selected regulatory band. The extended band scan is an enhancement to the PTP 650 Spectrum Expert allowing the ODU to measure and display interference in all channels from 4900 MHz to 6050 MHz. In other words, the coverage of the extended band scan is not restricted by the selected regulatory band.
When the extended band scan is enabled, the ODU supports a standard Spectrum Expert view (displaying only the channels in the configured regulatory band) or an extended Spectrum Expert view (displaying all channels). When the extended band scan is disabled, the ODU scans and displays only the channels of the configured regulatory band, and supports only the standard Spectrum Expert view.
Many country licenses include multiple regulatory bands, for example 5.1 GHz, 5.4 GHz and 5.8 GHz in the USA. In these countries, the extended scan can aid an operator in choosing the most suitable regulatory band for a particular application, or in evaluating the benefits of selecting a different regulatory band for an in-service link.
The update rate for individual channels is necessarily reduced by scanning a much larger number of channels, and so for optimum DSO performance it may be preferable to disable the extended band scan unless there is a specific need to survey alternate regulatory bands.
The extended band scan does not affect the ability of the system to perform on-channel measurements for radar avoidance (DFS), and DFS performance and approvals are not affected by the extended band scan.
Note that the system continues to transmit and receive data using only channels from a single configured regulatory band, there are no associated changes to the definition or use of regulatory bands, and the new feature does not provide band agility.