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High Efficient IP QAM Modulator for Digital Cable TV System 

Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: GQ-3680A

GQ-3680A
 
Modular Edge QAM Modulator
 
1: IP QAM Modulator 
2:

GQ-3680A

 

Modular Edge QAM Modulator

 

1: IP QAM Modulator 

2:  Multiplexing and srcambling function to save more equipment

3:  IP based Modualtion optional

 

 

Product Overview

 

      GOSPELL’s GQ-3680A is a new generation of modular & high density Edge QAM modulator combining TS-over-UDP/RTP input and output, transport stream re-multiplexing, scrambling, PSI/SI processing and 16/32/64/128/256QAM modulation in a 1U rackmount unit. It supports up to 48 QAM channels by using three external pluggable 16 QAM modules, each QAM module supporting up to two Gigabit copper interfaces. Moreover, GQ-3680A supports 1+1 redundant & hot-swappable power supplies for high reliability and overall stability of the system. Its pay-as-you-grow modular design, flexible configuration and licensing mechanism are making the GQ-3680 extremely scalable, very reliable with high performance, all of which are important to cable operators.

 

      The GQ-3680A supports Web browser and SNMP management with remote monitoring and control that can greatly reduce management time and operating expenses (OPEX) of operators.

With GQ-3680A, cable operators can be ensured that they will have a scalable, reliable product that enables them to offer high performance video stream services for years into the future. It can be used in cable central head-ends, remote head-ends and VOD networks.

 

Main Features

  • 1RU modular design, supporting up to three pluggable QAM modules
  • 16 QAM output channels per module, up to 48 QAM output channels
  • Supports 1+1 redundant & hot-swappable power supplies
  • 1+1 redundant copper interfaces per QAM module, supporting TS-over-UDP/RTP input and output
  • Supports multiplexing, pass-through, scrambling, PSI/SI processing, and QAM modulation;
  • Supports up to 64 programs per QAM channel and 16 PIDs processing capability per program
  • Supports SD and HD audiovisual streams simultaneously
  • ITU-T J.83 Annex A/B/C compliant, 6MHz or 8MHz bandwidth
  • Supports up to four DVB SimulCrypt CAS(s) and complies with DVB-CSA
  • Multiple firmware options to enable up to four scrambling channels
  • Scrambling processing up to 1024 programs
  • Supports UDP/ARP/ICMP/IGMP protocols
  • Supports PID filtering, pass-through, PCR auto-correction
  • Self-adaptive filter circuit design ensures outstanding out-of-band rejection
  • Web browser and SNMP management for local and remote management, monitoring and control

 

Technical Specifications

 

IP Input & Output (QAM Module)
Interface 2 x 100/1000 Base-T Ethernet
RJ-45 connector
Operation Mode Independent or redundant
Data Format TS-Over-IP(UDP/RTP)
MAC Layer Access IEEE 802.3
Transport Stream Re-multiplexing
Capacity of Processing Up to 1024 programs
PCR Auto correction
PSI/SI

PSI/SI table auto-generation, manual insertion, Comply with: ISO/IEC 13818-1

DVB SI(ESI EN300468)

PID Remapping and filtering and pass-through
Real-time Statistics TS rate, program rate, PID rate
Transport Stream Scrambling (Software Options)
Scrambling Algorithm Comply with DVB-CSA
Numbers of CAS Optional up to four DVB SimulCrypt CAS(s)
CAS Interface Protocol TCP/UDP (via Network Management Port)
EMM Bandwidth Up to 3 Mbps per TS
Scrambling Rate Up to 60 Mbps per QAM channel
Scrambling Level Program-level
Modulation Output (QAM Module)
Output Connector

1 x RF Output

1 x -20dB RF Test Port

Connector Type F-Type (Female, 75W)
RF Frequency Range 30 to 860 MHz
Bandwidth 6 or 8MHz
Qty of QAM channel 16 QAM channels(or carriers) each module
Modulation Standards ITU-T J.83 Annex A, B and C
Constellations

Annex A: 16 /32 /64 /128 /256QAM

Annex B: 64/256QAM

Annex C: 32 /64 /128 /256QAM

Symbol Rate

Annex A: 4.2 to 7 M Baud

Annex B: 5.057 M Baud

Annex C: 4.2 to 5.3 M Baud

RF Output Power Level

98 to 119dBμV (RF output Port)

70 to 90dBμV (-20dB test port)

MER ≥38dB (64QAM, 6.875M Baud)
SNR(Out of band) ≥50dB
Return Loss ≥14dB
Gain Fine-tune 0 to 5.0dB, Step Size 0.25dB
Network Management
Interface 1 x 10/100 Base-T Ethernet
Connector RJ-45(Front Panel Accessible)
Management Web browser and SNMP management
Miscellaneous
Front Panel 1 x Serial Console Port (via RJ-45 connector)
3.5’’ LCD with 6 x Control Buttons for 2-line alphanumeric display and settings
3 x Dual color LED, for status indications of power, work and Alarm
Rear Panel 1 x Power Supply Receptacle (AC Input)
1 x Power switch
Power Supply
Power Supply

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Company Info

Gospell Digital Technology Co.,ltd. [China (Mainland)]


Business Type:Manufacturer
City: Shenzhen
Province/State: Guangdong
Country/Region: China (Mainland)

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