Grass Valley AMX-1101 - Manual (Page 5)

GUIDE TO INSTALLATION AND OPERATION
AMX-1101 | 1
1 AMX-1101 Analog Audio Embedder
1.1 Introduction
The AMX-1101 is a high-quality, high-performance analog audio embedder designed to insert two analog audio stereo
signals into a single SDI signal. The AMX-1101 comprises an ADC-1722 card (analog audio to AES converter) and an
AMX-1121 card (2 AES embedder). The two cards are bundled via a special rear connector panel that includes the
necessary card interconnections, eliminating the need for external AES connections and reducing the number of rear
panel connectors.
The embedding process of the AMX-1101 includes an advanced signal loss detection function that provides a near-
seamless transfer to an internally-generated black on loss of the SDI input, thus sustaining audio embedding.
Moreover, it provides automatic equalization for up to 350 meters of Belden 1694A cable at 270 Mbps, and supports
LTC embedding as ANC data.
The audio processing includes 24 bit digital-to-analog conversion, audio input presence and overload detection, and
individual mute and level adjustment for every channel.
1.2 Features
• SDI input with up to 350m of automatic cable equalization
• Auto-detects 525/625 line format
• Maintains SDI output with embedded audio, even with loss of SDI input
• Inserts two analog audio stereo signals
• Audio group insertion/pass-through/delete
• Selectable routing of audio pairs to groups
• Left/right channels swappable
• Selectable audio delay (up to 6 fields)
• 24 bit analog-to-digital conversion
• 0 dBFS selectable (0 to +28 dBu, in 1 dB steps)
• -96 to +12 dB audio level adjustment (0.5 dB steps)
• Audio and video signal presence detection and remote reporting
• Audio overload detection and reporting
• Remote configuration and control
• Built-in audio and video test signals
1.3 Functional Diagram