> ## Documentation Index
> Fetch the complete documentation index at: https://docs.solidyne.ar/llms.txt
> Use this file to discover all available pages before exploring further.

# 542 APC Processor

> Audio processor for FM broadcast stations

<img src="https://mintcdn.com/solidyne/50z9gnJvpK4fhENI/images/thumbnails/542-miniatura.png?fit=max&auto=format&n=50z9gnJvpK4fhENI&q=85&s=e3b6950dc044d2430affc7bd683083c8" alt="542 Miniatura Pn" width="3840" height="1402" data-path="images/thumbnails/542-miniatura.png" />

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**Audio Processing**

* Five independent bands of compression and limiting.
* Wideband AGC (WB AGC) and Multiband AGC (MB AGC).
* Intelligent clipper with loudness control.
* Configurable presets and user fine-tuning.

**Integrated Encoding**

* Built-in stereo MPX generator.
* Integrated RDS encoder.

**Inputs / Outputs**

* 2 balanced analog inputs (XLR-3).
* 1 AES/EBU digital input.
* 2 balanced analog program outputs.
* 1 AES/EBU digital output.
* 2 stereo MPX outputs (BNC).
* **542/AoIP** option for **streaming** input.

**FM MAPS: Tuner and Measurements**

* Internal FM tuner for on-air monitoring.
* Real-time measurement of deviation, modulation, and signal levels.
* Correction algorithm to optimize stereo separation based on transmission chain.
* Spectrum scanning for monitoring other stations.

**Connectivity and Control**

* Ethernet port for remote IP control.
* Real-time level and status monitoring.
* Firmware updates without interrupting broadcast.

**Standards and Compliance**

* Meets international FM modulation standards.
* ITU r1770 / EBU R128 loudness indicators
* ITU BS412 loudness control
* RDS 2.0 with extensions

**Operational Safety**

* Automatic input switching in case of studio link failure.
* Remote support and adjustment service.
* Configurable alarms for out-of-spec deviations.
* Continuous 24/7 operation without moving cooling parts.