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AJA FS4 4-Channel 12G-SDI/1-Channel UHD 4K Frame Synchronizer/Converter

Manufacturer: AJA
Regular price $6,269.00 USD
Regular price Sale price $6,269.00 USD
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The FS4 4-Channel 12G-SDI & 1-Channel UHD 4K Frame Synchronizer/Converter from AJA enables the conversion and synchronization of UHD 4K video with audio. This 1 RU matrix synchronizer offers the flexibility to operate in either single-channel mode or four-channel mode.

In single-channel mode, the FS4 can process, scale, and cross convert UHD 4K video to various 2K/HD/SD formats. It also allows for the upscaling of HD or SD video to UHD 4K, along with the conversion of multiple channels of audio over 3G-SDI, AES, and MADI. This mode provides a comprehensive matrix for a wide range of audio and video processing needs.

In four-channel mode, the FS4 can simultaneously convert and scale up to four 2K/HD and SD video signals. This mode is ideal for applications that require the processing of multiple video signals simultaneously, such as live events or multi-camera productions.

The FS4 is equipped with a range of features including scaling, color correction, proc amp controls, motion adaptive deinterlacing, and more. It offers four 12G/6G/3G-SDI inputs and outputs, a reference loop input/output, GPI input, DB-25 AES/MADI audio input and output, 3G-SDI and HDMI monitor output, MADI input and output, analog audio input and output, and Gigabit Ethernet for LAN management. Additionally, the FS4 allows for the expansion of inputs and outputs by adding a separately available fiber SFP unit. Its redundant power supply ensures uninterrupted operation even in the event of a power source failure.

Overall, the FS4 4-Channel 12G-SDI & 1-Channel UHD 4K Frame Synchronizer/Converter offers a versatile solution for converting and synchronizing UHD 4K video with audio, providing flexibility and advanced features for various audio and video processing applications.

  • Single-channel mode provides a full suite of 4K/UltraHD processing and up, down, cross conversion to and from 2K, HD, or SD
  • Four-channel mode offers 4 x 2K/HD/SD channels of simultaneous conversion and processing, all within a 1 RU chassis for multichannel high-density delivery
  • Panel design provides straightforward operation in single- or four-channel mode
  • Legacy signals and archival material need to be integrated into the 4K environment
  • 4K sources need to be down-converted for current 2K/HD pipelines
  • Supports up, down, cross conversion from SD, HD, or 2K over 12G/6G/3G-SDI video to 4K or UltraHD video and back
  • Supports both Quadrant (Square Division) and 2SI (Two Sample Interleave) output formats
  • Hardware conversion technology ensures better image quality for your productions
  • Utilizes standard BNC as well as optional SFP inputs and outputs to integrate easily into a variety of workflows and facilities with support for SDI workflows all the way up to 12G
  • BNC inputs and outputs accept 4K/UltraHD/2K/HD/SD resolution SDI signals in single-channel mode
  • 2K/HD/SD inputs can be routed to multiple locations simultaneously without the need for any external signal distribution in four-channel mode
  • Looping reference input allows the synchronizer to be locked to your house reference signal for rock-solid stability
  • Digital audio can be disembedded and embedded between SDI, MADI, and AES for an array of routing possibilities

The FS4 4-Channel 12G-SDI & 1-Channel UHD 4K Frame Synchronizer/Converter from AJA allows you to convert and synchronize UHD 4K video with audio. This 1 RU matrix synchronizer offers the flexibility to operate in single-channel mode for UHD 4K processing, scaling, and cross conversion to different 2K/HD/SD formats. Additionally, it can also function in four-channel mode for simultaneous processing of multiple video streams.

AJA FS4 Specs

Inputs / Outputs
Video Inputs
4 x BNC (12G-SDI) Female
Audio Inputs
Video Outputs
4 x BNC (12G-SDI) Female
1 x HDMI (HDMI 1.4a) Female (Preview)
1 x BNC (3G-SDI) Female (Preview)
Audio Outputs
Other I/O
1 x DB-25 GPI Input/Output (Shared 4 x GPI Inputs, 4 x GPO Outputs)
1 x DB-25 Input (Shared AES/EBU Audio Input)
1 x DB-25 Output (Shared AES/EBU Audio Output)
2 x BNC Reference Input/Output
1 x RJ45 LAN Input/Output (Shared SNMP, HTTP)
1 x BNC Input (Shared MADI)
1 x BNC Output (Shared MADI)
1 x 1/8" / 3.5 mm Input
1 x 1/8" / 3.5 mm Output
Expansion Slots
Format Support
Input Video Format
SDI (10-Bit 4:2:2)
DCI 4K at 23.98/24/25/29.97/30/50/59.94/60 fps
UHD 4K 23.98/24/25/29.97/30/50/59.94/60 fps
1080p 23.98/24/25/29.97/30/50/59.94/60 fps
1080PsF 23.98/24/25/29.97/30 fps
1080i 50/59.94/60 fps
720p 50/59.94/60 fps
576i / 625 lines
480i / 525 lines
Input Audio Format
AES/EBU: 48 kHz / 24-Bit
Output Video Format
SDI (10-Bit 4:2:2 YCC)
DCI 4K at 24/25/29.97/30/50/59.94/60 fps
UHD 4K 24/25/29.97/30/50/59.94/60 fps
DCI 2K 23.98/24/25/29.97/30/50/59.94/60 fps
1080p 24/25/29.97/30/50/59.94/60 fps
1080PsF 23.98/24/25/29.97/30 fps
1080i 50/59.94/60 fps
720p 50/59.94/60 fps
480i / 525 lines
576i / 625 lines
Output Audio Format
AES/EBU: 48 kHz / 24-Bit
Embedded Audio
SDI: 8-Channel
Video Standard Compliance
SMPTE 259M/292M/297M/372M/424M-B/425M/ST-2081/ST-2082
Power I/O
2 x NEMA 5-15R Input
Power Consumption
Device: 100 to 240 VAC (55 W)
Operating Temperature
32 to 104°F / 0 to 40°C
Storage Temperature
-40 to 140°F / -40 to 60°C
Operating Humidity
10 to 90%
17.5 x 16 x 1.75" / 44.45 x 40.64 x 4.45 cm
7 lb / 3.18 kg
Packaging Info
Package Weight
11.3 lb
Box Dimensions (LxWxH)
21.3 x 18.3 x 7"

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