Product Overview
GOSPELL’s GQ-3681 is a new generation of modular & high density IPQAM. A single IP / modulation board has 2 IP inputs, multiplexing, scrambling and multi-channel modulation functions. The device supports up to 3 boards, 32-way IPQAM and 96 frequency points of modulation. This device adopts the latest module management function developed by Gospell, and configures the functions of device scrambling and modulation channels. Its flexible customization and strong expandability can meet customers' current and future digital TV systems. demand.
Main Features
·Support ITU-T J.83 Annex A / C modulation, output frequency range: 48MHz ~ 866MHz
·Bit rate range of output data: single channel 15.5~51.6Mbps
·RF single channel output data symbol rate range: 2.2~ 7Mbaud / s
·Output level range: 87dBuV~105dBuV (32 channels, 0.25dB step)
·QAM mode can work in 16QAM, 32QAM, 64QAM, 128QAM, 256QAM
·Multiple configurations provided by a single device can be opened through software licensing
·Support up to 4 CASs with the same secret and DVB-CSA scramble
·Reuse part supports automatic generation and manual upload of SI / PSI information
·Supports PID filtering, mapping and transparent transmission
·Supports automatic PCR correction
·Single board card with 32 adjacent frequency outputs, the channel is equipped with selective output switch
·Provide -20dB RF test port
·Support import and export of equipment working parameters
·Support Web network management, all main control software support remote online upgrade
·Support multi-language user interface to meet the needs of domestic and overseas markets
·With working temperature and power supply monitoring function
Technical Specifications
Chassis |
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Rear Panel | 3 x Pluggable QAM Module Slot* |
Front Panel | 1 x 10/100 Base-T Control Port(RJ-45) |
| 1 x Serial Console Port (RJ-45) |
Power Supply | Built-in AC PSU |
| Optional 1+1 redundant hot-swappable PSU |
| Input Voltage: 100 - 240 VAC, 50/60Hz |
Notes: Hot-pluggable is not supported, make sure the power cord was disconnected before insert or replace QAM modules! |
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QAM Module |
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IP Input & Output |
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Interface | 2 x 100/1000 Base-T Ethernet |
| RJ-45 |
Operation Mode | Independent or redundant |
Data Format | TS-Over-IP(UDP/TCP/IP) |
MAC Layer Access | IEEE 802.3 1000BASET |
Modulation Output-Type B |
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Output Connector | 1 x RF Output 1 x -20dB RF Test Port |
Connector Type | F-Type (Female, 75W) |
RF Frequency Range | 48 to 866 MHz |
Bandwidth | 6 or 8MHz |
Numbers of channel | 16 QAM modulation channels(or carriers) |
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 (QAM mode: 64QAM symbol rate: 6.857MBaud) |
SNR(Out of band) | ≥50dB |
Return Loss | ≥14dB |
Gain Fine-tune | 0 to 5.0dB, Step Size 0.25dB |
Modulation Output-Type D |
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Output Connector | 1 x RF Output 1 x -20dB RF Test Port |
Connector Type | F-Type (Female, 75W) |
RF Frequency Range | 48 to 866 MHz |
Bandwidth | 6 or 8MHz |
Numbers of channel | 24 QAM modulation channels(or carriers) |
Modulation Standards | ITU-T J.83 Annex A and C |
Constellations | Annex A: 16/32/64/128/256QAM Annex C: 32/64/128/256QAM |
Symbol Rate | Annex A: 4.2 to 7 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 (QAM mode: 64QAM symbol rate: 6.857MBaud) |
SNR(Out of band) | ≥50dB |
Return Loss | ≥14dB |
Gain Fine-tune | 0 to 5.0dB, Step Size 0.25dB |
TS Re-multiplexing |
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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 |
TS Scrambling (Software Options) |
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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 |
Miscellaneous |
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Front Panel | 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 |
Environmental |
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Operating Temperature | 5℃ to 40℃(41℉ to 104℉) |
Storage Temperature | -25 to 70℃(-13℉ to 158℉) |
Operating Humidity | 10% to 90%, non-condensing |
Mechanical |
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Product Dimensions (W x H x D) | 483mm x 44.5mm x 450mm 19’’ x 1.73’’(1RU) x 17.7’’ |
Product Weight | Approx. 6.5Kg (14.3 lbs) (fully configured) |
Ordering Information
Hardware Options |
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Hardware Codes | Descriptions |
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GQ-3681B-1PS | 1RU, GQ-3681B modular chassis with 3 x Pluggable QAM module slots, Single AC PSU |
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GQ-3681B-2PS | 1RU, GQ-3681B modular chassis with 3 x Pluggable QAM module slots, 1+1 Redundant Hot-swappable PSUs |
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GQ-3681D-1PS | 1RU, GQ-3681D modular chassis with 3 x Pluggable QAM module slots, Single AC PSU |
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GQ-3681D-2PS | 1RU, GQ-3681D modular chassis with 3 x Pluggable QAM module slots, 1+1 Redundant Hot-swappable PSUs |
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QM-3681B | QAM module with 16 QAM channels, 2 x 100/1000Base-T Ethernet input & output(RJ-45), 1 x RF output, 1 x -20dB RF test port |
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QM-3681D | QAM module with 24 QAM channels, 2 x 100/1000Base-T Ethernet input & output(RJ-45), 1 x RF output, 1 x -20dB RF test port |
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License Options |
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License Codes | Descriptions |
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LC-3681-CA1 | Enable scrambling function and one DVB Private Crypt CA |
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LC-3681-CA2 | Enable scrambling function and two DVB SimulCrypt CA(s) |
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LC-3681-CA3 | Enable scrambling function and three DVB SimulCrypt CA(s) |
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LC-3681-CA4 | Enable scrambling function and four DVB SimulCrypt CA(s) |
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For More Information
Please visit our website: http://www.gospell.com or contact your local sales representative:
GOSPELL Shenzhen, China Overseas Sales Center Block F10-F13, F518 Idea Land, Baoyuan road, Bao'an Central District, Shenzhen City 518102, Guangdong Province, China TEL: +86-755-26716172 FAX: +86-755-29114035 E_mail: sales.dtv@gospell.com | GOSPELL India (Office) Office No.C-503, 5th Floor, L.B.S. Road, Bhandup (West), Mumbai-400078 TEL: +91 9167995 705 E_mail: ashish@gospell.com | GOSPELL Mexico (Office) Avenida Patria NO3489.EL Tapatio Tlaquepaque Jal.Mexico C.P.45588 TEL: +52 (33) 3860-7059 E_mail: ventas@gospell.mx |
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GOSPELL Brazil (Joint Office) Rua Engenheiro Prudente, 477/483, Sao Paulo, Brazil TEL: +55 (11) 2274-1455 E_mail: zhouyong@gospell.com | GOSPELL Paraguay (Joint Office) Tte. Garay 1795 esq. Campo Vía Barrio San Vicente Asunción - Paraguay TEL: +595 21 33 43 02 |
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Product pictures are for reference only, GOSPELL reserves the right to modify the specifications without prior notice.