
1: Support encoding and modulating
2: AV input and Output with IP / ASI after modution
3: Support AAC
Product Overview
GM-8318Q is a new generation, highly integrated SD encoder and QAM transmodulator, combining MPEG-2 SD encoding, QAM RF reception, transport stream processing and QAM modulation in a 1RU chassis. It’s ideal for broadcasters, cable network operators and media providers looking to reduce equipment costs and lower total power consumption for digital television distribution
.
The GM-8318Q features versatile functions, high density and superior performance, provides up to eight channels of MPEG-2 standard definition(SD) encoding, QAM RF demodulation, ASI-based transport stream input, transport stream multiplexing/re-multiplexing/pass-through, PSI/SI processing, two QAM modulation outputs. All of these feeds incoming from local analog PAL/NTSC video & audio media sources, local ASI transport streams and remote QAM RF signals which can be processed into two transport streams and finally distributed to cable network after QAM modulation.
To make this as comprehensive as possible, Web browser and SNMP management are also available for local and remote monitoring and control, this can significantly reduce management time and save operating expense.
Main Features
Encoding Features:
· Up to eight channels of MPEG-2 SD video and MPEG-1 Layer II audio encoding
· High picture quality in ultra low bit rate to reduce network overheads or costs
· Supports encoding rate range from 1Mbps to 7Mbps
· Output resolutions: 480i (NTSC), 576i (PAL)
· Supports VBR/CBR video encoding
Transport Stream Processing Features:
· DVB-ASI transport stream inputs
· Transport stream multiplexing, remultiplexing and pass through
· Supports PID filtering, pass-through, PCR auto-correction
· PAT, PMT and SDT insertion
Modulation/Demodulation Features:
· Two QAM adjacent-channel outputs
· Wide range of modulation output bitrate from 15.5Mbps to 51.6Mbps per QAM channel
· Supported QAM constellation: 16/32/64/128/256QAM
· ITU-T J.83 Annex A/B/C compliant, 6MHz or 8MHz bandwidth
· Self-adaptive filter circuit design ensures outstanding out-of-band rejection
Other Features:
· Web browser and SNMP management for local and remote management and control;
· Front panel control and LCD display for parameter settings and malfunction alarm display
· Local and remote firmware upgrades
· Low power consumption
Technical Specifications
Video/Audio Encoding Input | ||
Analog Video/Audio Input Options | ||
Composite Video | 4 or 8 x CVBS | |
BNC female, 75Ω | ||
Unbalanced Audio | 4 or 8 x Stereo pairs (R&L) | |
BNC female, 600Ω | ||
Stereo or Mono mode | ||
Video Encoding | ||
Encoding Formats | MPEG-2, MP@ML | |
Resolution & Frame Rate | 720/544/480/352 x 576i@25fps 352 x 288@25fps 720/544/480/352 x 480i@29.97fps 352 x 240@29.97fps | |
Aspect Ratio | 4:3 | |
Video Control | Brightness, Contrast, Chrominance and Hue | |
Encoding Rate Mode | CBR, VBR | |
Video Encoding Rate | 1-7Mbps per program | |
Audio Encoding | ||
Encoding Standards | MPEG-1 Layer II | |
Operation Mode | Stereo or Mono | |
Volume Control Range | -63dB to 20dB | |
Supported Sample Rate | 32 kHz, 44.1 kHz, 48 kHz | |
Audio Encoding Rate | 64/128/192/256/384 kbps | |
RF Input | ||
Number of Inputs | 1 x RF Input, 1 x RF Loop Out | |
Connector Type | F-Type (Female, 75Ω) | |
Standards | DVB-C (EN300429) | |
Constellations | 16/32/64/128/256 QAM | |
Frequency Range | 50-860MHz | |
Input Signal Level | -20 to +20dBm (64QAM) | |
ASI Transport Stream Input | ||
Qty of ASI Input | 1 x ASI, 1 x ASI Loop Out | |
Connector | BNC female, 75W | |
TS Packet Length | 188 or 204 Bytes | |
TS Output Bit Rate | 2-60Mbps | |
Burst TS | Not support | |
Transport Stream Processing | ||
Functions | Multiplexing, Re-multiplexing, Pass through | |
Capacity of Processing | Two transport streams, up to 24 programs | |
PCR | Auto correction | |
PSI/SI | PSI/SI auto generation, manual insertion | |
PID | Remapping and filtering and pass through | |
PSI/SI Standards | ISO/IEC 13818-1, DVB SI(ESI EN300468) | |
Real-time Statistics | TS rate, program rate, PID rate | |
QAM Modulation Output | ||
Output Connector | 1 x RF Output 1 x -20dB RF Output (Test Port) | |
Connector Type | F-Type (Female, 75W) | |
RF Frequency Range | 48-870 MHz | |
Bandwidth | 6 or 8MHz | |
Numbers of Output | Two QAM adjacent-channels | |
Output Bitrate Range | 15.5Mbps to 51.6Mbps per QAM channel | |
Modulation Standards | ITU-T J.83 Annex A, B and C | |
Constellations | Annex A: 16/32/64/128/256 QAM Annex B: 64/256QAM Annex C: 32/64/128/256 QAM | |
Symbol Rate | Annex A: 4.2-7 Mbaud Annex B: 5.057 Mbaud Annex C: 4.2-5.3 Mbaud | |
RF Output Power Level | 90-110dBμV (RF output Port) 70-90dBμV (-20dB test port) | |
MER | ≥38dB (64QAM, 6.875MBaud) | |
SNR(Out of band) | ≥50dB | |
Return Loss | ≥12dB | |
Gain Fine-tune | 0-10dB, Step Size 0.25dB | |
Network Management | ||
Interface | 1 x 10/100 Base-T Ethernet | |
Connector | RJ-45 | |
Management | Web browser and SNMP management | |
Miscellaneous | ||
Front Panel | 3.5’’ LCD with 6 x Control Button for 2-lines alphanumeric display and parameter settings | |
3 x Dual color LED, for status indications of power, running and Alarm | ||
Rear Panel | 1 x Power Receptacle(AC Input) | |
1 x Power switch | ||
1 x Serial Console Port(via RJ-45 connector) | ||
Power Supply | ||
Input Voltage | 90-250 VAC, 50/60Hz | |
Power Consumption | 50W (Typ.) | |
Environmental | ||
Operating Temperature | 0℃ to 45℃(32℉ to 113℉) | |
Storage Temperature | -20 to 80℃(-4℉ to 176℉) | |
Operating Humidity | 90%, non-condensing | |
Mechanical | ||
Product Dimensions (W x H x D) | 483mm x 44.5mm x 400mm 19’’ x 1.73’’ (1U) x 15.8’’ | |
Product Weight | Approx. 5Kg (11 lbs) |
Rear Panel View :
For More Information
please visit our website: 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: +02265685890 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 |
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 |
Gospell Digital Technology Co.,ltd
Gospell Digital Technology Co., Ltd. (Stock Code: 002848) is a high-tech enterprise in the field of electronic information. It is recognized as a "benchmark enterprise in the electronic information industry" and a "key high-tech enterprise of the National Torch Plan" in China. It is a leading enterprise and backbone enterprise in the broadcast television transmission and satellite transmission service industries. Additionally, it is a leading enterprise in the electronic information manufacturing industry in Hunan Province and is internationally renowned as a brand enterprise. It is also recognized as a nationwide contract-abiding and trustworthy unit and a Chinese quality and integrity enterprise. The company was established in 1993 and founded Chenzhou Gospell Digital Technology Co., Ltd. in 2001. On February 13, 2017, it was listed on the Shenzhen Stock Exchange. In 2020, Weifang Bincheng Investment Development Co., Ltd. became the controlling shareholder of the company, with the Weifang State-owned Assets Supervision and Administration Commission becoming the actual controller of the company. The company is headquartered in Gospell Industrial Park, Suxian District, Chenzhou City, Hunan Province. It has eight wholly-owned subsidiaries: Chengdu Tongcy Digital System Co., Ltd., Chenzhou Gospell Digital Technology Co., Ltd., Chenzhou Gongtian Electronic Ceramic Technology Co., Ltd., Chenzhou Gospell Precision Manufacturing Co., Ltd., Gospell Digital Technology (Shandong) Co., Ltd., Gospell Digital Technology Hong Kong Co., Ltd., Gospell Digital Technology India Subsidiary, and Shenzhen Qianhai Xutian Communication Co., Ltd. It operates one production base, consisting of five major workshops: SMT workshop, DIP workshop, assembly workshop, injection molding factory, and hardware factory, with a total of 45 production lines.
As a national high-tech enterprise, Gospell boasts a sophisticated technology R&D matrix and has mastered more than 20 core technologies in the audio and video field. Several technological innovations have been recognized as "national key new products" and "provincial-level scientific and technological achievements," and have received the "Hunan Province Science and Technology Progress Award." As of December 2023, the company has undertaken eight provincial-level and higher scientific and technological achievement transformation projects. It holds over 65 intellectual property patents, including 52 invention patents, 9 utility model patents, and 4 design patents. Additionally, Gospell has secured 117 computer software copyrights.
We commenced our overseas operations early, embarking on digital television system construction in international markets as early as 2004. To date, we have constructed over 200 ground and cable digital television systems, exclusively supplying core equipment, in more than 60 countries across Asia, Africa, Latin America, and Europe.