GQ-3800
DVB-T2 Modulator
Product Overview
GQ-3800B is a highly reliable single-channel DVB-T2 modulator
launched by GOSPELL, which is compliant with the EN 302 755(DVB-T2)
and EN 302 755 version 1.3.1(T2-Lite, option) standards, and is
designed for digital terrestrial distribution by DTT network
operators and TV broadcaster.
GQ-3800B combines dual redundant ASI and Gigabit IP input
interfaces, for seamless switching between primary and slave
interfaces that can greatly improve the stability and reliability
of terrestrial distribution networks. It supports T2 modulator
interface (T2-MI) over ASI or IP input, which comes from DVB-T2
gateway, suitable for MFN or SFN- networking.
The GQ-3800B features a state-of-the-art linear / non linear
digital pre-correction that optimizes DTT transmitter performance
and efficiency. It offers a wide range of UHF band DVB-T2 RF
modulation output (470MHz to 860MHz) and various transmission and
modulation modes, such as MFN, SFN, SISO, MISO, SPLP and MPLP.
Moreover, it supports Web and SNMP based management and control for
local and remote parameters configuration and status monitoring.
Main Features
· Complies with DVB-T2 and T2-Lite(software option) standards
· Supports data input in T2-MI or MPEG-TS format
· Supports SFN/MFN
· Supports Single / Multiple Input Single Output (SISO/MISO)
· Enhanced Digital Adaptive Pre-correction
· Supports linear / non-linear Digital Adaptive Pre-correction,
optional enhanced DAP
· Dual ASI and IP input, supporting independent or 1+1 hot
redundant(seamless switch)
· QPSK/16QAM/64QAM/256QAM(standard or rotated) mode
· Multiple signal bandwidth can be supported: 5M,6M,7M,8MHz
· Modulation RF output level up to 0dBm
· Supports PAPR adjustment for output signal
· Modulation module is designed based on FPGA to ensure the
stability of device
· Adopt extra large cache memory for both uniform and burst input
stream
· Self adaptive filter circuit design ensures outstanding
out-of-band rejection
· Supports Web/SNMP-based network management and monitoring, online
upgrade of firmware
| ASI Transport Stream Input |
| Numbers of Input | 2 x ASI Input |
| Connector Type | BNC (Female, 75Ω) |
| Input Bit Rate | 0 to 80Mbps each |
| Standards | TS 102 831, EN 102 773(T2-MI) |
| Data Format | MPEG-TS(188/204 Bytes) or T2-MI |
| Operation Mode | 1+1 hot redundancy(seamless switch) |
| Ethernet Input |
| Numbers of Input | 2 x 100/1000 Base-T Ethernet Input |
| Connector Type | RJ-45 |
| Supported Protocols | IP, RTP, UDP, IGMP (V2 & V3) |
| VLAN ID | 0 to 4095(IEEE 802.1q) |
| Encapsulation & FEC | SMPTE-2022 |
| Data Format | MPEG-TS-over- IP/UDP/RTP(7 x 188Bytes ) or T2-MI-over-IP/UDP/RTP |
| Operation Mode | 1+1 hot redundancy(seamless switch) |
| Clock & Synchronization |
| External Clock & Sync. | 1 x 1PPS In (BNC, 50Ω) 1 x 10MHz In (BNC, 50Ω) 1 x TOD In (DB-9) |
| Internal GPS Module | Optional built-in GPS or GPS/Glonass module |
| 1 x GPS In(BNC, 50Ω, with 3.3V DC feed for external GPS antenna) |
| Operation Mode | Reference clock redundant management |
| Internal Clock | Default internal 10MHz clock |
| Digital Pre-correction |
| Linear Pre-correction | 1 x FBA input |
| RF feedback signal from amplifier output |
| Non-Linear Pre-correction | 1 x FBF input |
| RF feedback signal from filter output |
| Connector | BNC, 50Ω |
| Pre-correction Mode | Digital Adaptive Pre-correction(DAP) Enhanced DAP (software option) |
| Modulation Output |
| Interface | 1 x RF Output 1 x -20dB RF Output(Test Port) |
| Connector Type | F-Type (Female, 75Ω) |
| RF Frequency Range | 470 to 862 MHz (1Hz step size, 0.2Hz accuracy) |
| Bandwidth | 5MHz, 7MHz, 8MHz |
| Transmission Mode | MFN, SFN-SISO, SFN-MISO |
| Modulation Mode | System A, System B, Multi-PLP |
| Constellations | QPSK, 16/64/256 QAM (standard or rotated mode) |
| Carriers | 1k, 2k, 4 k, 8k, Extended 8k, 16k, Extended 16k,32k, Extended 32k |
| Protection Interval | 1/2, 3/5, 2/3, 3/4, 4/5, 5/6 |
| RF Output Power Level | 90 to 107dBμV (RF output Port) 70 to 87dBμV (-20dB test port) |
| Output RF Level | 0 dBm±1dB |
| Stability | ± 0.1 dB / 10°C |
| Return Loss | > 12 dB |
| MER | >40 dB |
| Shoulder of Signal | >50 dB |
| Test Mode | PRBS, Sinus, Spectrum-Gap, Null Symbol Insertion |
| PAPR Configuration | 8 to 20 dB (0.1 dB step) |
| Network Management |
| Interface | 1 x 100/1000 Base-T Ethernet(Shared with one Ethernet input) |
| Connector | RJ-45 |
| Management | Web browser and SNMP management |
| Miscellaneous |
| Front Panel | 3.5’’ LCD with 6 x Control Buttons for 2-line alphanumeric display
and parameter 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 |
| Input Voltage | 90 - 250 VAC, 50/60Hz |
| Power Consumption | 25W (Max.) |
| 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’’ (1 RU) x 15.8’’ |
| Product Weight | Approx. 5Kg (11 lbs) |
Ordering Information
| Hardware Options |
| Hardware Codes | Descriptions | |
| GQ-3800B | DVB-T2 Modulator with Digital Adaptive Pre-correction | |
| GQ-3800B-G | DVB-T2 Modulator with Digital Adaptive Pre-correction and built-in GPS module | |
| GQ-3800B-G/G | DVB-T2 Modulator with Digital Adaptive Pre-correction and built-in
GPS/Glonass module | |
| Software Options |
| License Codes | Descritptions | |
| GQ-3800B-GAP | Enable enhanced Digital Adaptive Pre-correction | |
| GQ-3800B-Lite | Enable T2-Lite profile | |
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 Chengdu, China Overseas Sales Subsidiary The Fourth Floor, No. 2 Building, Matt High-Tech Industrial Park,
Tianhong Road No#5, West High-Tech Area, Chengdu City 611731,
Sichuan Province, China TEL: +86-28-87838224 FAX: +86-28-87838304 E_mail: sales.dtv@gospell.com | GOSPELL Chenzhou, China Headquarters GOSPELL Industrial Park, Bai Lu Tang, Su Xian District, Chenzhou, Hunan, China |
| | |
GOSPELL India (Office) Office No.C-503, 5th Floor, L.B.S. Road, Bhandup (West),
Mumbai-400078 | GOSPELL Mexico (Office) Avenida Patria NO3489.EL Tapatio Tlaquepaque Jal.Mexico C.P.45588 | GOSPELL Kenya (Office) A5, Valley Place Apartment, Gitanga Close, Off Gitanga Road,
P.O.Box 51043-00100, Narobi, Kenya |
