ViaSat MEOLink User Manual page 9

MEOLink User Manual
1 MEOLINK MODEM OVERVIEW
1.1 Introduction
This manual provides descriptions and instructions for operators responsible for configuring,
managing, and monitoring the MEOLink Modem.
1.1.1 MEOLink Modem Overview
The MEOLink Modem is a high‐performance multi‐Ethernet port multi‐channel per carrier
(MCPC) satellite modulator/demodulator that converts Ethernet input signals into multiple
waveform intermediate frequencies (IF) and vice versa. The MEOLink provides DVB‐S2
waveform backward compatibility with fielded modem technology, while adding dual
receivers to support MEO satellites with lossless handover. The MEOLink operates at speeds
between 5Mbps and 800 Mbps with symbol rates from 10 to 180 Msps. Modulation
waveforms include Q‐/8‐/16A‐/32A‐PSK. Adaptive Coding and Modulation (ACM) and
Advanced Uplink Power Control (AUPC) features help conserve satellite resources.
The MEOLink is housed in a 2U‐high, 19‐inch, rack‐mount enclosure. The modem is used in
fixed gateway applications with Doppler rate and unique antenna handover features
allowing for seamless MEO operation. MEOLink supports L‐band IFs for easy integration with
standard terminal equipment.
The unit status may be monitored using front panel indicators and may be operated using
the Control Plane Ethernet (1GigE) interface. Either an internal or external reference
provides the necessary timing signals for the circuits. If a malfunction occurs, alarm
indications are displayed via the front panel indicators and the Control Plane Ethernet
interface via SNMP and HTTP.
Rev 002vx
1141780, 1‐1