Evertz

Evertz 500AMDA-AESU | Unbalanced AES Audio DAC & 1x5 Distribution Amplifier

Evertz Signal Processing

Professional broadcast product designed for reliable production, streaming, and modern media workflows.

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Key Features

Combined DAC & Reclocking DA: Provides five reclocked 75Ω coaxial digital outputs and two balanced analog outputs from one unbalanced AES3 input.
24-Bit D/A Conversion: Supports 32kHz, 44.1kHz, and 48kHz digital audio sampling rates.
Long-Distance Cable Equalization: Compensates for signal losses over up to 1000m (3280ft) of Belden 1694A coaxial cable at 48kHz.
Precision Analog Level Calibration: Supports 0dBFS calibration from +12dBu to +24.8dBu in 0.1dB steps via card-edge controls.
AC-Coupled Input Protection: Uses 75Ω AC-coupled BNC input to minimize 60Hz ground loops and electrical interference.
Comprehensive Monitoring & SNMP: Provides LED audio level meters, sample rate, PCM/non-PCM, and signal presence indication, with SNMP monitoring via the 500FC Frame Controller.

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Product Overview +

Dual Digital Distribution & High-Precision Analog Conversion

The Evertz 500AMDA-AESU is a broadcast-grade $75\ \Omega$ unbalanced AES/EBU digital audio distribution amplifier and 24-bit Digital-to-Analog Converter (DAC). Engineered for master control rooms, production trucks, and transmission facilities, it allows operators to distribute digital coaxial AES signals while simultaneously monitoring or routing decoded balanced analog audio.

Long-Distance Equalization & Precise Level Trim

Extended Cable Compensation: Automatically equalizes and reclocks degraded $75\ \Omega$ BNC digital audio streams across extreme cable distances exceeding $1000\text{ m}$ of Belden 1694A coaxial cable.
Fine Analog Level Adjustment: Analog peak levels are adjustable from $+12\text{ dBu}$ to $+24.8\text{ dBu}$ with $0.1\text{ dB}$ resolution, enabling exact matching with broadcast headroom standards (such as $+24\text{ dBu}$ or $+18\text{ dBu}$ $0\text{ dBFS}$ reference levels).
Comprehensive Visual Diagnostics: Card-edge LEDs provide real-time feedback, including dynamic audio level bar graphs, sample rate lock ($32/44.1/48\text{ kHz}$), and PCM vs. compressed bitstream indication.

High-Density Modular Chassis Architecture

Occupying a single slot in the 3RU Evertz 500FR frame, up to 16 cards can be deployed per chassis. The unit uses a specialized rear BNC adapter panel equipped with removable 3-pin terminal block connectors for balanced analog audio output.

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