Gq-3770 DRM Modulator

• Customization: Available
• Type: Radio Signal Modulation
• Function: Signal Transmitting Device
• Model NO.: GQ-3770
• Condition: New
• Mode: DRM30 a, B, C, D
• Bandwidth: 4.5, 5, 9, 10, 18, 20 kHz
• Modulation: Msc 16/64 Qam, Hmmix/Hmsym; Sdc 4/16 Qam
• Interleaver: 0.4s Short, 2s Long
• Sfn: Supported
• DRM DCP: Fec and Pft Supported
• Input: AC 110V - 240V @ 50/60Hz
• Typical Power Consumption: 20 Watts
• Transport Package: Carton
• Specification: 438mm x 44mm x 330mm
• Trademark: GOSPELL
• Origin: China
• HS Code: 8543709990
• Production Capacity: 10000

Product Description

Product Overview
The Gospell GQ-3770 DRM modulator is a cutting-edge core device for DRM baseband processing, designed to meet the ETSI ES 201 980 standards. Built on an embedded platform, this modulator is equipped with advanced channel coding and OFDM modulation capabilities. It receives MDI/DCP streams from DRM encoders to generate signals compliant with DRM specifications.

Highlights

1. Coding and OFDM Modulation: Generates ETSI ES 201 980-compliant I/Q signals from MDI/DCP streams.
2. Power Ratio Reduction: Lowers OFDM PAPR, boosting transmitter efficiency.
3. Pre-Distortion: Optimizes signal quality through compensation.
4. Output Modes: Supports I/Q, envelope/phase-modulated, and direct RF outputs for versatile transmitter compatibility

Features

• Ethernet Input: MDI/DCP streams.
• Modes: A, B, C, D compatible.
• Mapping: Standard QAM, symmetrical, mixed hierarchical.
• Interleaving: 2s long, 0.4s short.
• Bandwidths: 4.5, 5, 9, 10, 18, 20 kHz.
• Coding Rates: 1/4 to 8/9.
• Clock Sources: 10MHz internal/external, 1PPS sync.
• Networking: Single/multi-frequency sync.
• Reconfiguration: Dynamic.
• Spectrum: ITU-R compliant.
• PAPR Reduction: Built-in.
• Outputs: Digital I/Q, amplitude/phase, RF.

Technical Specifications
DRM Features
Robustness Mode: DRM30 A, B, C, D
Bandwidth: 4.5, 5, 9, 10, 18, 20 kHz
Modulation: MSC 16/64 QAM, HMmix/HMsym; SDC 4/16 QAM
Protection: EEP/UEP with all coding rates and protection ratios
Interleaver: 0.4s short, 2s long
SFN: Supported
DRM DCP: FEC and PFT supported
Signal Pre-Correction
AM/AM, AM/PM distortion correction
PAPR reduction
Phase / envelope equalization
Phase / envelope delay compensation
Interfaces (Input - Output)
RF OUT: 1x BNC for direct RF output
RF IN: 1x BNC for RF feedback
10 MHz: 1x BNC for reference input
1PPS: 1x BNC for reference input
Ethernet: 1x 10/100 Base-T RJ45 for MDI/DCP input and management
Digital I/Q Output: 1x AES/EBU XLR for digital I/Q output (48 kHz)
RS232: 1x UART for Tx configuration
GNSS UART: 1x UART for GNSS receiver
Management

Integrated web console

2 x 20 front panel LCD for status monitoring

Physical & Environment

1RU 19" rackmount chassis

(W x H x D): 438mm x 44mm x 330mm

Power

AC 110V - 240V @ 50/60Hz

Power Consumption: 20 watts

 

Company Profile

Welcome to Gospell Digital Technology Co., Ltd 

Gospell Digital Technology Co., Ltd.(Stock Code: 002848) was established in 2001, with the registered capital of RMB167.15 million.

As the product manufacturer, systems integrator and technology service providers, GOSPELL has already ranked in the top of the global DTV market.

GOSPELL has an R & D team consists of many industry professionals with rich experience of technology development and process improvement.

After years of development, our company has already built more than 300 cable and terrestrial DTV systems for domestic customers.

So far has built more than 200 Terrestrial and Cable Digital TV systems in over 60 countries in Asia, Africa, Latin America, Europe, etc.