Component Carriers (DVB-S2/S2X)

The Component Carriers parameter group configures a table containing the component carriers available to be included in the aggregate signal.

Reference Frequency sets a base frequency that is used with each component carrier's offset value to determine the carrier's absolute center frequency (Absolute Center = Reference Frequency + Offset).

Default: 0 Hz

Enabled includes or excludes the component carrier in the aggregate signal.

Default: Enabled (checked)

Choices: Enabled, disabled

Name displays the automatically assigned component carrier name, "CCn," beginning with CC0 and incrementing by one for each new CC.

Default: CC0

Absolute Center sets/displays the center frequency for the component carrier. Absolute Center is calculated as the sum of the Reference Frequency and the carrier’s Offset value. Since a component carrier's Absolute Center setting is coupled with the Offset setting, changing one setting will change the other setting accordingly.

Offset sets the frequency offset for the selected carrier. The frequency offset is relative to the measurement's Reference Frequency and is used in calculating Absolute Center value. Since Freq. Offset is coupled with Carrier Center, changing one setting will change the other setting accordingly.

Default: 1 GHz Gigahertz: A frequency measurement which equals one billion hertz.

Symbol Rate displays the component carrier's symbol rate (Frame Definition tab > Symbol Rate).

Default: 300 MHz Megahertz: A unit of frequency equal to one million hertz or cycles per second.

Assigned Channels displays the channels that have been assigned to the component carrier (that contain the transmission of the component carrier). Only one channel can be assigned to a component carrier. You can make this assignment in the Acquisition Configuration editor.

Default: Ch1

Copy CCn to... copies the settings of the component carrier to another component carrier, which is selected from the drop-down menu.

Duplicate Carrier creates a duplicate of a component carrier with all settings identical, including Absolute Center, Offset, Symbol Rate and Assigned Channels.

Remove Carrier deletes a carrier from the Component Carriers table.

Add CC adds a new carrier to the bottom of the Component Carriers table. The initial values are set to defaults. A newly added carrier is included in the aggregate signal (enabled) by default.

Aggregate Signal Diagram provides a generalized preview of the aggregate signal's channels (in green) and assigned component carriers (in blue). The elements of the diagram are not to scale. Hover over an element for details.