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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