Comtech-ef-data MIDAS Version 4.X NMS Configuration Manual de usuario descargar pdf (Pagina 138)

MIDAS 4.X NMS Configuration, Rev. 6

A-6 Frequency Translations

beginning of the Space segment. This is simply adding the 1/2 of the carrier (for the center)

multiplied by the spacing, to the beginning frequency of the space segment. Since this is

determining the IF, all values are in MHz:

Center Frequency

of the Outbound =

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

(81.3 MHz + (.0192 * 0.5 * 1.5625))

Center Frequency

of the Outbound =

81.3 MHz + .0015

Center Frequency

of the Outbound =

81.315 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

(81.315 MHz + 0.030 MHz)

Center Frequency

of the Inbound =

81.315 MHz + .030 MHz

Select System Administrator. Configure the Outbound and Inbound Control Channel

Frequencies.

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 de usuario Pagina 138