GQ-3770 DRM Modulator
The Toncy GQ-3770 DRM Modulator is a core device for DRM baseband processing based on an embedded platform. It is equipped with channel coding and OFDM modulation capabilities, capable of receiving MDI/DCP streams from DRM encoding multiplexers to generate I/Q signals in compliance with ETSI ES 201 980 standards. The Modulator includes functionality to reduce the peak-to-average power ratio (PAPR), effectively lowering the PAPR of OFDM signals, thus enhancing the output capability and efficiency of transmitters. Additionally, it features spectral shaping capabilities, with built-in windowing and filtering algorithms to ensure the output spectrum meets the ITU-R requirements for DRM broadcasts. The device supports multiple output modes, including I/Q or direct RF outputs, making it adaptable to various transmitter systems.
GQ-3770 DRM Modulator
A highly reliable professional broadcasting system that supports all features of DRM.
- Supports input of MDI/DCP multiplex streams via Ethernet
- Supports modes A, B, C, and D
- Supports standard QAM constellation mapping
- Supports symmetric/hybrid tiered modulation constellation mapping
- Supports long (2 seconds) and short (0.4 seconds) interleaving
- Supports channel bandwidths of 4.5/5/9/10/18/20 kHz
- Coding rates: 1/4 to 8/9 (EEP/UEP)
- Supports internal and external 10 MHz clock sources and 1PPS
- Supports single-frequency/multi-frequency network synchronization
- Supports dynamic reconfiguration
- The output spectrum meets ITU-R spectral requirements for DRM broadcasts
- Supports crest factor ratio suppression (CFR)
- Supports digital I/Q and RF outputs
GQ-3771 MW/SW Transmitter DRM Adapter
GQ-3771 MW/SW Transmitter DRM Adapter
Designed for the digital upgrade of PSM, PDM, and DX analog transmitters..
- Amplitude-Phase Output: It is capable of driving a variety of EER transmitters, including PDM, PSM, and DX models.
- Time Delay Adjustment: The adapter supports precise delay processing for both the audio and phase branches of the transmitter, ensuring synchronization.
- Digital Predistortion Functionality: Integrated with advanced signal processing algorithms, this feature significantly improves the linearity of high-power transmitters.
- Full Digital Processing: Utilizing end-to-end digital processing, the adapter greatly enhances the overall output quality of the transmitter, ensuring superior broadcast performance.