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CCTV Launches Lawo IP Audio System

CCTV preps mobile IP-based field production system for large-scale sports coverage.

Rastatt, Germany (February 8, 2018)—State broadcaster CCTV has launched the first mobile IP-based audio electronic field production (EFP) system in China, having commissioned a setup based around mc² mixing consoles from Lawo with RAVENNA real-time audio transport.

The project is the latest in a longstanding relationship between NDT and CCTV, which serves an audience of over one billion people via 45 TV and radio channels. The move into mobile IP-based audio is intended to enhance CCTV’s capabilities for dedicated audio production and broadcast in sports and music programming, especially for large-scale sports coverage.

Sportcast Kicks Off with Lawo

NDT designed the system using a typical spine-leaf IP switch network, with two Cisco 3850 switches acting as main and backup respectively. A further six Cisco 2960 switches provide main and backup support for three remote stage-boxes on one system. NDT also provided global surveillance software to monitor the status of the PTP master clock and log files of the switches.

The operators’ setup comprises two 32-fader Lawo mc²56 consoles, each providing 288 DSP channels and a routing capacity of 8192×8192 mono channels, and two 16-fader mc²36 consoles with 192 internal DSP channels and 512×512 crosspoints. Using SoundGrid, integration, the systems have both MADI and IP RAVENNA/AES67 compatible interfaces, with dual router cards.

Music Mix Mobile Goes Deep with Lawo

This gives CCTV an IP audio mobile system that will operate together with another IP video mobile system designed for 4K broadcasting. This includes two Lawo DALLIS I/Os taking care of the AES signals passing to and from EVS, and three remote stageboxes configured with six A__mic8 plus one A__mic8 and three A_digital8 interfaces, as well as one A__madi4 at the local end.

CCTV has been using Lawo mixing consoles since 2008, and has seven studios equipped with mc²66 desks plus a small audio OB van outfitted with a Lawo mc²56 console. The new installation of Lawo mc² consoles will bring full IP configuration to CCTV for the first time.

Lawo •