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产品名称

GQ-3800A

DVB-T2 Modulator

发布时间 2018-01-09
点击次数 63
GQ-3800A
产品名称:

GQ-3800A

上市日期: 2018-01-09

Main Features

•  Fully compliant with DVB-T2 standard 

•  Supports data input in T2-MI or MPEG-TS format

•  Adopts 1 + 1 AC redundant power supplies

•  Field proven on commercial roll-out

•  Manual or Automatic Adaptive Digital Pre-Corrections(ADPC)

•  Outstanding MER, phase noise and stability

•  SFN/MISO adaptation

•  Multiple PLP, optional 2 PLP and 8 PLP 



Product Overview

多功能前端接口适配器

Gospell’s GQ-3800A is a highly reliable single-channel DVB-T2 modulator, which is compliant with the EN 302 755(DVB-T2) standard, and is designed for digital terrestrial distribution by DTT network operators and TV broadcaster.

GQ-3800A adopts the state-of-the-art hardware design, benefitting from Gospell’s years of experience in the digital broadcast network solution design. It offers high grade broadcast RF signal quality and includes Adaptive Digital Pre-Correction (ADPC) to optimize the transmission efficiency and compensates automatically power amplifier non-linear distortion. A built-in GPS/Glonass receiver can be included to ease broadcast operation.

GQ-3800A supports the broadcasting in single PLP and multiple PLP. It provides TS-Modulator Interface (T2-MI) over ASI and IP to receive configuration and synchronization information from the DVB-T2 Gateway. It also supports MISO transmission to improve SFN broadcasting.

GQ-3800A features a wide range of RF modulation outputs from 174MHz to 860MHz which can be easily integrated in both VHF and UHF band transmitters. As a high grade broadcast equipment, Web and SNMP-based management are also introduced for remote monitoring and control that can greatly reduce management time and operating expenses (OPEX) of operators.


Technical Specifications 

多功能前端接口适配器

ASI Input

Number of Input

2 x ASI

Connector Type

BNC (Female, 75Ω)

Data Format

MPEG-TS(188 Bytes) or T2-MI

Standards

TS 102 831, EN 102 773(T2-MI)

Operation Mode

1+1 hot redundancy(seamless switch)

Ethernet Input

Number of Input

1 x 100/1000Base-T, RJ-45

1 x SFP Slot(SFP module not included)

Supported Protocols

IP, RTP, UDP

Encapsulation & FEC

Pro MPEG Forum CoP3/SMPTE 2022

Data Format

MPEG-TS-over- IP/UDP/RTP

or T2-MI-over-IP/UDP/RTP

Operation Mode

Alternatively input

Clock & Synchronization

GPS/Glonass

Built-in GPS/Glonass module(option)

1 x RF In (BNC, 50Ω, with 3.3V DC feed for external GPS antenna)

Internal Clock

1 x 1 PPS Out (BNC, 50Ω)

1 x 10 MHz Out (BNC, 50Ω)

Clock Precision

0.5 ppb(≥1 Year)

Clock Stability

1 x 10-8 per year

External Clock

1 x 1 PPS Input (BNC, 50Ω)

1 x 10 MHz Input (BNC, 50Ω)

Digital Pre-correction

RF Feedback Input

1 x RF In A (SMA, 50Ω) *

+9dBm(±2dB)

1 x RF In R (SMA, 50Ω) **

+9dBm(±2dB)

Digital Pre-correction

Manual or Adaptive DPC

Notes:

*:  Linear Pre-correction Input, RF feedback signal from filter output;

**:  Non-linear Pre-correction Input, RF feedback signal from amplifier output.

RF Modulation Output

Interface

1 x RF Output

F-Type, 75Ω

1 x -23dB RF Monitoring Port

BNC, 75Ω

RF Frequency Range

174 -858 MHz (step 1Hz)

Output Level

-10 to +2 dBm(step 0.1dB)

MER

≥42dB

Shoulder

≥55 dB

Spurious

≥55 dBc

Modulation

PLP Management

From 1 to 8 static or dynamic PLP

Type 1 and Type 2

PLP Constellations

QPSK, 16QAM, 64QAM, 256 QAM

L1 Post Constellations

BPSK, QPSK, 16QAM, 64QAM

Constellation Rotation

Normal, Rotated

Channel Bandwidth

5, 6, 7 or 8MHz

FFT Mode

1k, 2k, 4 k, 8k, 16k, 32k(normal and extended)

Guard Interval

1/128, 1/32, 1/16, 19/256, 1/8, 19/128, 1/4

Code Rate

1/2, 3/5, 2/3, 3/4, 4/5, 5/6

FEC

Short(16k), Normal(64k)

Pilot Pattern

From PP1 to PP8

Network Type

MFN, SFN and MISO

Digital Pre-correction

Adaptive and manual DPC

PAPR Reduction

Tone Reservation

Test Mode

Single tone, PRBS & MPEG generator, Central carrier cancellation

Multi-standard

DVB-T/H, DVB-T2

RF Output Power Level

90 to 107dBμV (RF output Port)

70 to 87dBμV (-20dB test port)

Network Management and Monitoring

Interface

1 x 10/100 Base-T Ethernet (RJ-45)

Management

Web browser and SNMP management

Protocols

SNMP v2

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

2 x Power Supply Receptacle (AC Input)

2 x Power switch

Dry relay alarm output

1 x RF Test Port (SMA, 50Ω)

Power Supply

Power Supply Module

1+1 Redundant Power Supplies

Input Voltage

100 - 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 458mm

19’’ x 1.73’’ (1 RU) x 18.0’’

Product Weight

Approx. 5Kg (11 lbs)


Rear Panel View 

多功能前端接口适配器

GQ-3800A



Ordering Information

多功能前端接口适配器

Hardware Options

Hardware Codes

         Descriptions


GQ-3800A-2AC

         DVB-T2 Modulator with 1+1 Redundant PSUs, manual DPC, 

         no built-in GPS/Glonass module, no SFP Slot


GQ-3800A-2AC-GG-SFP

         DVB-T2 Modulator with 1+1 Redundant PSUs, manual DPC, 

         built-in GPS/Glonass module, SFP Slot(no SFP module)


Software Options

License Codes

         Descritptions


GQ-3800A-ADPC-VHF

         Enable VHF band Adaptive Digtial Pre-Correction


GQ-3800A-ADPC-UHF

         Enable UHF band Adaptive Digtial Pre-Correction


GQ-3800A-PLP-2

         Enable up to 2 PLP


GQ-3800A-PLP-8

         Enable up to 8 PLP



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