Specialist suppliers of pro audio/video equipment to the film,
post-production, broadcast and music recording industries.

AJA Video Systems FS3 Frame Synchronizer/Converter

High-quality SD/HD to 4K Up-conversion
Part No: FS3

The new FS3 combines AJA’s industry-proven frame synchronization with high-quality 4K up-conversion technology to seamlessly integrate SD and HD signals into 4K workflows. AJA’s adaptive scaling algorithms, paired with our well-known conversion technology ensures your up-converted images will have the maximum quality possible. Input SD or HD resolution SDI via BNC or Fiber and send up-converted 4K to multiple BNC and Fiber outputs simultaneously. FS3 also includes the industry-proven features included in AJA frame synchronizers such as RGB color correction, region of interest scaling, extensive audio controls and routing, web UI control, GPI triggers and more.

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£2,911.00 £2,425.83 ex VAT
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£2,911.00 £2,425.83 ex VAT
AJA Video Systems

Product Description


AJA's FS family brings the full power of their hardware conversion expertise within compact 1RU rack units that offer unrivalled flexibility. Delivering AJA's industry standard up/down/cross-converter technology for the highest quality images, FS units are ideal for high-density applications such as mobile trucks and packed machine rooms, able to replace multiple hardware units in a single rack slot. A wide range of conversion possibilities makes them perfect for converting disparate sources to a common format, or handling whatever formats the production environment might throw at you.

Up-convert to 4K
Moving to 4K is never an instant change. Legacy signals and archival material need to be integrated into the 4K environment. Utilizing AJA's remarkable conversion algorithms, FS3 supports up-conversion from SD, HD, and 3G-SDI video to 4K or UHD video carried on quad 3G-SDI BNCs, dual 3G-SDI BNCs, or optional fiber LC SFP outputs. Both Quadrant (Square Division) and 2SI (Two Sample Interleave) output formats are supported.

Incredible Connectivity
FS3 has BNC and Fiber* inputs to accept SD or HD resolution SDI signals. The up-converted 4K signal is output to two sets of BNC and Fiber* connections, allowing the output to be routed to multiple locations simultaneously without the need for any external signal distribution.

A looping Reference input allows the FS3 to be locked to your house reference signal for rock-solid stability.

* Fiber inputs and outputs are optional.

AJA hardware conversion technology
We bring the same AJA conversion technology to FS3 as we have to all our other conversion products, ensuring your legacy material can move with you to 4K with the highest image quality for your productions.

Closed caption conversion
FS3 supports closed captioning and the conversion of closed captioning between SD/HD and 4K formats - including full conversion of CEA-608 and CEA-708 standards. FS3 can preserve closed captioning even when converting between formats, removing the need to re-insert closed captions after conversion.

Active Format Description
Automatically sets Active Format Description information to match the converted signal. This means AFD information does not have to be inserted after conversion and provides accurate information for devices that understand AFD.

Remote configuration and control
FS3 is network ready and supports SNMP monitoring and web-based remote control. Units can be connected to any Ethernet network via the built-in 10/100/1000MB Ethernet port, allowing control and configuration of multiple FS units from any web browser on a connected computer. Configurations can be saved and applied to multiple units, ensuring consistency and quick configuration in large installs.

To integrate smoothly with the existing automation of a facility, FS3 can also receive external GPI commands to trigger a variety of functions.

FS3 is designed to meet the demands of broadcast engineering and live event production while providing incredible flexibility. Select any of the various inputs for conversion and route to all available outputs simultaneously.

Dual, redundant power supplies ensure uninterrupted power even in the event of a power supply failure.


Additional Information


Video Input Digital

  • Four 3G-SDI inputs, 2 BNC and up to 2 fiber (optional)
  • 4x1 selector feeds video processor
  • SD/HD/3G-SDI, SMPTE-259/292/424, 8 or 10-bits

  • 3G-SDI Level A, Level B-DL, or Level B-DS

  • Dual Link HD-SDI (2x1.5G), SMPTE -372

  • Single Link SD/HD/3G-SDI

  • Fiber SDI, SMPTE-297, 8 or 10-bits (optional)

  • Dual Channel LC connector modules

  • Single Channel LC connector modules

  • Single Channel SC connector modules

  • Formats and frame rates

  • (2K) 2048 x 1080p 23.98, 24, 25, 29.97, 50, 59.94

  • (HD) 1920 x 1080p 23.98, 24, 25, 29.97, 50, 59.94

  • (HD) 1920 x 1080PsF 23.98, 24, 25, 29.97, 50, 59.94

  • (HD) 1920 x 1080i 50, 59.94

  • (HD) 1280 x 720p 50, 59.94

  • (SD) 625i 50

  • (SD) 525i 59.94

  • YCbCr, 4:2:2, 10-bit


Video Output Digital

  • Twelve 3G-SDI outputs, 8 BNC and up to 4 fiber (optional)
  • Video processor feeds all outputs
  • SD/HD/3G-SDI, SMPTE-259/292/424, 8 or 10-bits

  • Quadrant (Square Division) or 2SI (Two Sample Interleave) 4K/UltraHD pixel mapping

  • 3G-SDI Level A, Level B-DL, or Level B-DS

  • Quad 3G-SDI for 4K/UltraHD p50/59.94 (3 copies on Quad SDI)

  • Dual 3G-SDI for 4K/UltraHD p23.98/24/25/29.97 (6 copies on Dual SDI)

  • Single Link SD/HD/3G-SDI (12 copies on single SDI)

  • Fiber SDI, SMPTE-297, 8 or 10-bits (optional)

  • Dual Channel LC connector modules

  • Single Channel LC connector modules

  • Single Channel SC connector modules

  • Formats and frame rates:

  • (4K) 4096 x 2160p 23.98, 24, 25, 29.97, 50, 59.94

  • (UltraHD) 3840 x 2160p 23.98, 24, 25, 29.97, 50, 59.94

  • (2K) 2048 x 1080p 23.98, 24, 25, 29.97, 50, 59.94

  • (HD) 1920 x 1080p 23.98, 24, 25, 29.97, 50, 59.94

  • (HD) 1920 x 1080PsF 23.98, 24, 25, 29.97, 50, 59.94

  • (HD) 1920 x 1080i 50, 59.94

  • (HD) 1280 x 720p 50, 59.94

  • (SD) 625i50

  • (SD) 525i 59.94

  • YCbCr, 4:2:2, 10-bit


Audio Input Digital

  • 64-Channels via four 16-Channel audio disembedders (1 disembedder per SDI input)
  • SD/HD/3G-SDI, SMPTE-272/299
  • 20-bit SD, 24-bit HD/3G, 48 kHz sample rate
  • Drop/repeat sample rate conversion to match output reference


Audio Output Digital

  • 64-Channels via four 16-Channel audio embedders
  • SD/HD/3G-SDI, SMPTE-272/299
  • 20-bit SD, 24-bit HD/3G, 48 kHz sample rate
  • 64 x 64 mono audio matrix


Video Processing

  • Proc amp controls
  • Color corrector
  • Legalizer
  • Frame rate conversion (3:2, 1:2, 2:1)
  • Delay 0-6 frames with H and V controls
  • Closed Caption conversion (CEA-608/CEA-708)
  • AFD input detection, down-convert control, and output pass through or overwrite
  • Freeze (manual or on input signal loss) to black or last good frame
  • Matte generator for background fill
  • Video test generator
  • Nominal video delay

  • 4K/UltraHD, 3 frames (LFR), 6 frames (HFR)

  • HD/SD, 2 frames (LFR), 4 frames (HFR)


Format Conversion

  • Convert any supported input HD/SD format to any supported 4K/UltraHD/HD/SD output format, as long as the input and output frame rates are of the same frame rate family. These three families are:

• 59.94, 29.97, 23.98

• 50, 25

• 24



  • Zoom in and out
  • Reposition
  • Region of Interest



  • SD/HD/2K to UltraHD/4K
  • SD to HD/2K
  • Hardware 10-bit
  • Zoom 14:9: results in a 4:3 image zoomed slightly to fill a 14:9 image with black side bars
  • Zoom Letterbox: results in image zoomed to fill full screen
  • Zoom Wide: results in a combination of zoom and horizontal stretch to fill a 16:9 screen; this setting will introduce a small aspect ratio change



  • HD/2K to SD
  • Hardware 10-bit
  • Anamorphic: fullscreen
  • Letterbox: image is reduced with black top and bottom added to image area with the aspect ratio preserved
  • Crop: image is cropped to fit new screen size


Aspect Ration Conversion

  • Letterbox: This transforms SD anamorphic material to a letterboxed image
  • H Crop: Will produce a horizontally stretched effect on the image; transforms anamorphic SD to full frame
  • SD Pillarbox: Will produce an image in the center of the screen with black borders on the left and right sides and an anamorphized image in the center
  •  V Crop: Will transform SD letterbox material to an anamorphic image


Audio Processing

  • 64 x 64 mono audio matrix, route 1 to 1, 1 to many
  • Independent controls for each channel

  • Gain +18 to -18 dB in 0.5 dB steps

  • Delay -16ms to 256 ms in 20.8 us steps

  • Phase invert

  • 5.1 or 7.1 to stereo mixdown with gain adjust
  • Audio test generator



  • SDI RP188 via SDI BNC


Reference Input

  • Blackburst or tri-level sync
  • Looping, nonterminating


Network Interface

  • 10/100/1000 Ethernet (RJ-45)
  • Embedded web server for remote control


Size (w x d x h)

  • 17.5” x 16" x 1.75" 1RU (444.5mm x 406.5mm x 44.45mm)



  • 7.9 lb (3.6 kg)



  • 100-240 VAC 50/60 Hz (Dual, redundant power supplies), 55W typical; 80W max. 15A max.



  • Safe Operating Temperature: 0 to 40 degrees C (32 to 104 degrees F)
  • Safe Storage Temperature (Power OFF): -40 to 60 degrees C (-40 to 140 degrees F)
  • Operating Relative Humidity: 10-90% noncondensing
  • Operating Altitude: <3,000 meters (<10,000 feet)