In terms of technical specifications, modern outside broadcast (OB) vans generally support HDR and 4K/8K Ultra-HD production, feature multi-channel audio processing capabilities (typically 16–48 channels), and are equipped with redundant power systems (main power, UPS, and generators) to ensure uninterrupted operation. Transmission methods include satellite, 5G, and fiber optics, allowing for flexible switching based on on-site conditions.
Key Subsystem Technical Specifications
1. Vehicle Structure: Truck-based (15t limit / 12m length) or trailer-based (payload >20t / length 15m+); expandable design (single- or dual-side slide-outs) increasing internal workspace to the 100m² class.
2. Core A/V Systems: Production switcher supports multiple M/E layers (e.g., 2–4 layers) with matrix capacities ranging from 64×64 to hundreds of channels; audio console supports multi-track mixing and 3D audio rendering; cameras must support 4K/8K High Dynamic Range (HDR).
3. Transmission Links: Primary links include fiber optic (high stability), 5G/microwave (mobile), and satellite (long-range); supports 100G IP backbone networks and anti-interference technologies for Non-Line-of-Sight (NLOS) transmission.
4. Synchronization and Latency: Strict adherence to the GY/T 222-2023 standard; system-wide black burst/sync signal locking; relative A/V latency controlled within the millisecond range.
5. Environmental Adaptation: Zoned air conditioning (including fuel-based heating), shock-absorbing chassis, electronically controlled support legs, and cooling systems for the onboard data center.
