User's Guide

12
OW70L-Dac - OneWeb LEO User Terminal
3.3 System Package
3.3.1 Above Deck Unit (ADU)
The OW70L-Dac operates in a dual parabolic primary and secondary configuration. Each terminal consists
of apedestal, a reflector, RF modules and antenna control modules which are enclosed in a radome.
• Pedestal: 3-axial stabilized platform for the position compensation of the antennas
• RF modules: the antenna consists of a reflector, OMT, feeder and RCM which converts the satellite
signals into the IF bands and up-converts IF bands to the forward-link satellite signals. The primary
antenna includes the modem module, called SSM, which implements necessary functionality to transmit
and receive signals as well as communicate and command pointing directions to the antenna.
• Control modules: the antenna interface module, called AIM, controls the antenna motion by interfacing
with the modem and RF modules.
• Radome: protects the antenna from outdoor environment.
Figure 3: Radomes and Pedestal
3.3.2 Customer Network Exchange (CNX)
The Customer Network Exchange (CNX) must be installed in a weather-protected area. It interfaces with
user equipment and provides power and data interconnection. The CNX connects to primary antenna while
providing secure GigE connection to the Baseband Unit. The CNX takes 48 V input but can vary by product
variant.
Front Panel Back Panel
Figure 4: Customer Network Exchange (CNX)