The Newglee NGA-201A DRM-AM Modulator supports the DRM standard ETSI ES 201 980 and is designed to convert data streams from a media encoder into RF signals. It features modules for DRM baseband processing, digital signal synthesis, frequency conversion, DAC, RF output, audio signal input/output, monitoring system, and control panel.
Highlights of NGA-201A DRM MODULATOR
Channel Coding and OFDM Modulation: Generates ETSI ES 201 980-compliant I/Q signals from MDI/DCP streams.
Peak-to-Average Power Ratio Reduction: Lowers OFDM PAPR, boosting transmitter efficiency, ensuring clear and reliable DRM radio signal output.
Digital Pre-Distortion: Optimizes signal quality through compensation.
Multiple Output Modes: Supports I/Q, envelope/phase-modulated, and direct RF outputs for versatile transmitter compatibility.
Features of NGA-201A DRM Radio Modulator
Dual MDI 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: ¼ 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.
SPECIFICATIONS OF NGA-201A DRM RADIO MODULATOR
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 IN: 1x BNC for RF feedback
– 10 MHz in: 1x BNC for reference input
– 1PPS in: 1x BNC for reference input
– MDI: 1* 10/100 Base-T RJ45 for IP DCP/MDI input
– RS232: 1x UART for Tx configuration
– RS485: 1 x RS485 for Tx configuration
– Digital I/Q Output: 1x AES/EBU XLR for digital I/Q output (48 kHz)
– RF OUT: 1x BNC for direct RF output
Management
– Web: Integrated web console
– LCD: 2 x 40 front panel LCD for status monitoring
– SNMP
Physical & Environment
– Mounting: 1RU 19” rackmount chassis
– Dimensions (W x H x D): 438mm x 44mm x 330mm
Power
– Input: AC 110V - 240V @ 50/60Hz
– Typical Power Consumption: 20 watts
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