User's Manual

Screen Service SDT 200UB - 500UB ARK 1 Purpose and planning
July, 2009 v 1.0 Page 2 - 3
2.1 INTRODUCTION
ARK1 ATSC is a Multi-standard Television Transposer based on Software defined technology; ARK1 ATSC
allows the definition of different operative modes on the same hardware platform.
At the state of the art ARK1 ATSC has two working modes:
• ITU 470 modulator (based on ITU-R BT.470-7);
• ATSC modulator (based on ATSC A/53).
ITU 470 modulator receives NTSC signals on SDI interfaces and modulates them.
ATSC modulator receives ATSC signals and modulates them. Inputs and outputs allow to import and export
TS contents on ASI and GBE interfaces.
The single software controller allows the switching between working modes and different settings for each
operative mode using the same platform.
A brief description of the main features and potentialities of each operative mode follows.
2.2 ITU 470 modulator
ITU 470 modulator for NTSC (ITU-R BT.470-7) television system.
Capable of:
• Agile UHF output Up-converter (from 473 MHz up to 851 MHz).
• Video and Audio modulation parameters setting.
• AM/PM Software Pre-correction.
2.3 ATSC modulator
ATSC modulator for digital (ATSC A/53) television standard.
Capable of:
• Agile UHF input Down-converter (from 473 MHz up to 851 MHz)
• Agile UHF output Up-converter (from 473 MHz up to 851 MHz).
• Input RF signal level monitoring.
• Auxiliary Transport Stream inputs on ASI (EN-50083/9).
• Auxiliary Transport Stream inputs on Gigabit Ethernet (Pro-MPEG cop 3) - not implemented.
• Adaptive filter.
• AM/PM Software pre-correction.