Description

QAM Modulator

Brief introduction

JD-QAM-1100 Modulator is self-designed QAM digital modulator with high performance. It can receive MPTS and SPTS from encoders, multiplexer, DVB gateway, scrambler, video server, etc, to process modulating and channel error-correction encoding. It can supply with variable frequency to digital TV channel or supply with RF (fixed or frequency agility) output.

It is with the characteristics of flexible configuration, high-performance indications and stability, and can be applied to the front end system for large and medium size cable digital TV; it is also high cost performance product, which can increase the contents of digital TV channels on the basis of current analogue/digital cable TV front end system (e.g. medium, small size cable station, enterprises and public istitutions station, hotel, community, etc.)

Features

• In accordance with DVB-C standard channel encoding
• Support whole range of variable signal rate and QAM star level
• Support PID filtering/re-mapping
• Support PSI/SI information simultaneously update
• Support NIT table editing
• Automatic code stream filling and intelligent empty pack deleting
• With the function of PCR high-precision correction
• Code rate input form including ASI/DS3 (optional) format and so on
• RF are fixable or frequency agility output
• Supply with RF output monitoring port (-30dB)
• Supply with DVB ASI/SPI input interface and ASI looping out interface
• Front panel LCD shows key control parameters and controls operation, with Chinese and English menu selection
• LED status display and warning indicator
• Support 10M/100M Ethernet control interface, and can upgrade on line through network
• Local/long-distance control and central management are available through network management system
• 19” 1 U standard rack structure

Technical parameters