Comtech-ef-data MIDAS Version 4.X NMS Configuration Manual do Utilizador descarregar pdf (Página 146)

MIDAS 4.X NMS Configuration, Rev. 6

A-14 Frequency Translations

Control Channel

Setup

Refer to the Ku Control Channel setup for an explanation determining 30 kHz for Control

Channel carrier spacing. Follow the same formula to determine where to place the center of

the Outbound Channel at the beginning of the Space segment.

Center Frequency of

the Outbound =

Frequency of beginning of Space Segment + (Symbol Rate * 0.5 * Carrier Spacing)

(77.9 MHz + (0.0192 * 0.5 * 1.5625))

Center Frequency of

the Outbound =

77.9 MHz + 0.015

Center Frequency of

the Outbound =

77.915 MHz

Find the center frequency of the Inbound Control Channel by adding the 30kHz spacing:

Center Frequency of

the Inbound =

Center Frequency of the Outbound + Carrier Spacing

(77.915 + 0.030 MHz)

Center Frequency of

the Inbound =

77.945 MHz

Select System Administrator. Configure the Outbound and Inbound Control Channel Fre-

quencies.

Note: Refer to Section 2, Initial Setup Procedures for descriptions of additional Control

Channel and LinkSync parameters.

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Comtech-ef-data MIDAS Version 4.X NMS Configuration Manual do Utilizador Página 146