AJA FS4 4K/UHD Frame Synchronizer and Converter

The AJA FS4 is a 1RU frame synchronizer and up/down/cross converter that handles 4K/UHD, 2K/HD, and SD video formats. Its strongest capability is simultaneous processing of four independent 3G-SDI channels or a single 4K/UHD signal, with full audio and ancillary data support.

Advantages

The FS4 combines frame synchronization, format conversion, color correction, and HDR support in a compact 1RU chassis with dual redundant power supplies. It offers flexible connectivity with 4x 3G-SDI and HDMI 2.0 inputs and outputs, plus comprehensive audio I/O including AES/EBU, MADI, and analog. Control via Ethernet, RS-422, or front panel ensures easy integration.

Suitable for

• Broadcast and production facilities requiring multi-channel SDI processing
• 4K/UHD workflows needing frame sync and HDR conversion
• Live events and OB vans with space and power constraints
• Post-production suites needing color correction and audio routing

Key specifications

• Video formats: 4K/UHD, 2K/HD, SD
• Video inputs: 4x 3G-SDI, 1x HDMI 2.0
• Video outputs: 4x 3G-SDI, 1x HDMI 2.0
• Audio inputs: Embedded SDI/HDMI, 8-ch AES/EBU, 16-ch MADI, 8-ch analog
• Audio outputs: Embedded SDI/HDMI, 8-ch AES/EBU, 16-ch MADI, 8-ch analog
• Processing: Frame sync, up/down/cross conversion, aspect ratio conversion
• Color processing: Color correction, proc amp, HDR (HLG/PQ)
• Video processing channels: 4x independent 3G-SDI or 1x 4K/UHD
• Reference input: Genlock (blackburst, tri-level sync)
• Control: Ethernet (Web UI, REST API), RS-422, front panel
• Power: Dual redundant
• Rack unit: 1RU
• Ancillary data: Timecode, closed captioning, VANC
• Audio delay: Yes
• SDI reclocking: Yes
• Video delay: Yes
• Color space conversion: Yes
• Audio mixing/routing: Yes
• Output scaling: Yes
• Firmware upgradable: Yes (via Ethernet)

Recommendations

The AJA FS4 is a versatile and reliable solution for broadcast and post-production environments. Its multi-channel processing and comprehensive audio support make it ideal for complex signal management. Ensure your facility has adequate rack space and power redundancy to leverage its capabilities fully.