GQ-3670
Multi-functional Edge QAM Modulator
1: with IP interface optional
2: Multi function modulation
3: with Multiplexing and scrambling function
4: save more cost and equipment
Product Overview
GOSPELL’s GQ-3670 is a full IP-Based Multi-functional Edge QAM modulator, which can receive multiple transport streams from an IP network, and then multiplexing, scrambling as well as insert local information to the transport stream and finally output several adjacent QAM channels by RF interface after QAM modulation. Also, It supports up to 256QAM for maximized channel capacity and utilization.
GQ-3670 supports web browser and SNMP management for local and remote monitoring and controlling that can greatly reduce management time and operating expense (OPEX) of operators. It also supports flexible licensing management functions enabling scrambling functions and expand the numbers of QAM channels, Due to its flexibility and versatility, GQ-3670 can be widely applied to DTV head-end system that are located in core-to-edge TS processing and modulation.
Main Features
- Supports TS re-multiplexing, scrambling and QAM modulation in 1RU
- Supports up to four DVB SimulCrypt CAS and DVB-CSA scrambling
- 3Mbps EMM bandwidth, up to 256 programs scrambled
- ITU-T J.83 Annex A/B/C compliant, 6MHz or 8MHz bandwidth
- Transport stream input via Gigabit Ethernet
- Supports RTP/UDP/ARP/ICMP/IGMP protocols
- Supports unicast and multicast (IGMP2.0/ 3.0)
- Supports PSI/ SI auto-generation or manual uploading during re-multiplexing
- Supports PID filtering, mapping, and pass-through, PCR auto-correction
- Output frequency range: 30 MHz to 860 MHz
- Dual RF output ports with up to 16/32 QAM channels output with 4/16-adjecent-frequency
- Outstanding out-of-band rejection, in-band EPL balance capability
- Supports Web/SNMP-based management and Multi-language GUI
- Supports device configuration import/export and online remote update
Technical Specifications
| IP Input | ||
| Interface | 2 x 100/1000 Base-T Ethernet | |
| Connector | RJ-45 | |
| Operation Mode | 1 + 1 Redundant | |
| MPEG TS Format | 7 x 188Byte | |
| IP Encapsulation |
GQ-3670C: MPEG TS-over-UDP/RTP GQ-3670D: MPEG-TS Over UDP |
|
| MPEG TS | MPTS or SPTS | |
| Addressing | Unicast or Multicast(IGMP v2 & v3) | |
| Transport Stream Re-multiplexing | ||
| Multiplexing Capability |
GQ-3670C: Up to 16 TS (1024 programs) GQ-3670D: Up to 32 TS (2048 programs) |
|
| PCR | Auto correction | |
| PSI/SI |
PSI/SI table auto-generation, manual insertion, Comply with: ISO/IEC 13818-1 DVB SI(ESI EN 300 468) |
|
| 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 Level | Program-level | |
| Scrambling Capability |
GQ-3670C: Up to 1024 programs GQ-3670D: Up to 2048 programs |
|
| Modulation Output | ||
| Output Connector |
1 x RF Output 1 x -20dB RF Output (Test Port) |
|
| Connector Type | F-Type (Female, 75W) | |
| RF Frequency Range | 30 to 900 MHz (Step size: 1KHz) | |
| Modulation Standards | ITU-T J.83 Annex A, B and C | |
| Bandwidth | 6 or 8MHz | |
| Numbers of QAM |
GQ-3670C: Up to 16 QAM channels GQ-3670D: Up to 32 QAM channels |
|
| Constellations |
GQ-3670C: 16 /32 /64 /128 /256QAM GQ-3670D: 64/256QAM |
|
| Symbol Rate |
Annex A: 4.2 to 7 M Baud Annex B: 5.057 M Baud Annex C: 4.2 to 5.31 M Baud |
|
| RF Output Power Level |
90 to 110dBμV (RF output Port) 70 to 90dBμV (-20dB test port) |
|
| MER | ≥38dB (64QAM, 6.875M Baud) | |
| SNR(Out of band) | ≥50dB | |
| Return Loss | ≥12dB | |
| Gain Fine-tune | 0 to 5dB, Step Size 0.25dB | |
| Network Management | ||
| Interface | 1 x 10/100 Base-T Ethernet | |
| Connector | RJ-45 | |
| Management | Web browser and SNMP management | |
| Supported Protocols | HTTP4.0/HTML1.1/XML/CGI(Web Management), NTP | |
| Miscellaneous | ||
| Front Panel | 3.5’’ LCD with 6 x Control Buttons for 2-line information display and settings | |
| 3 x Dual color LED, for status indications of power, work and Alarm | ||
|
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