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FS1-X (Frame Sync/Converter with MADI audio, 1RU)

Home Video Converters AJA FS1-X (Frame Sync/Converter with MADI audio, 1RU)
Advanced frame synchronizer and converter with MADI audio and motion adaptive linear Frame Rate Converter
Mac & Win
Usually ships in 2-business days or less.
Electronic Download
Usually ships in 2-business days or less.
Availability: In stock

Manufacturer Part Number: FS1-X

FS1-X is the next evolution in frame synchronization and conversion. Within its compact 1RU chassis, FS1-X integrates an amazing array of video and audio connectivity and processing, including 56- and 64-channel MADI audio over coax or fiber. With its flexible architecture, FS1-X utilizes a high-quality, motion adaptive linear Frame Rate Converter for smooth motion conversion between a wide range of frame rates whether for broadcast, production or live events.

Incredible frame rate conversion option*
Matching up and synchronizing disparate video and audio formats is a critical part of any broadcast, mobile or post-production environment. With the factory-installed motion adaptive Frame Rate Converter (FRC) option, FS1-X creates incredible, high-quality conversions between different frame rate families for virtually unlimited international standards support.

*Optional. Factory installation required at time of order.

Massive audio flexibility
The growth of 5.1 and 7.1 audio has increased the number of audio channels that must be managed in a production as well as needing to create stereo mixdowns from 5.1 and 7.1 sources. The MADI standard provides a convenient way to transport huge numbers of audio channels along a single cable, simplifying the cabling demands for broadcasters, mobile trucks and production. FS1-X supports both fiber and coax 56- and 64-channel MADI input and output. An internal 224x224 audio matrix allows full routing of MADI, mixdowns and all audio coming from SDI, fiber, AES and analog sources for an incredible amount of audio processing capability in a single box.

High-quality conversion
AJAs hardware conversion technology ensures the highest image quality for your productions.

Key conversion features include:

  • SD/HD up, down-conversion
  • SD/SD aspect ratio conversion
  • HD/HD cross-conversion (720p/1080i)
  • Up, down, cross-conversion with both the input and converted formats on SD/HD SDI outputs (both synchronized)
  • HD cross-conversion with simultaneous down-converted SDI output
  • Automatic Reverse Telecine detection and removal
  • Closed Caption conversion (CEA-608/CEA-708 standards)
  • AFD conversion or pass-through (user-selectable)

Sidebar Keying
FS1-X features a unique keyer configuration, allowing incoming signals to be combined in powerful ways. A common example is sidebar keying, where incoming video is converted from SD to HD but rather than stretching the 4:3 aspect ratio to fit in a 16:9 frame, a second signal is used to fill the sides of the 16:9 frame. This allows channel identification or other imagery to be placed in that area rather than having black bars on either side. The robust AFD features of FS1-X ensure that the aspect ratio of the outgoing signal is properly identified for downstream devices.

Many functions on FS1-X can be triggered by external GPIs such as freezing an input or switching between presets, allowing easy integration into existing systems for seamless and accurate automation.

Extensive Connectivity
FS1-X is loaded with comprehensive I/O for converting between the widest range of analog and digital signals. Perfect for use in all broadcast and post production environments, featuring 3G-SDI inputs and outputs, HDMI, comprehensive multi-channel audio connections supporting the latest standards, and I/O for analog video equipment, including HD and SD component.

CWDM Fiber Options
The optional fiber inputs and outputs let you to choose from multiple wavelength CWDM SFPs, allowing advanced multiplexing of signals over a single fiber connection.

Possible CWDM options:

  • Dual TX 1271/1291
  • Dual TX 1311/1331
  • Dual TX 1351/1371
  • Dual TX 1391/1411
  • Dual TX 1431/1451
  • Dual TX 1471/1491
  • Dual TX 1511/1531
  • Dual TX 1551/1571
  • Dual TX 1591/1611

Remote configuration and control
FS units are network ready and support SNMP monitoring and web-based remote control. Units can be connected to any Ethernet network via the built-in 10/100/1000 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.

FS1-X is designed to maximize flexibility while providing a dependable solution that is engineered to meet the demands of broadcast engineering. Dual, redundant power supplies ensure FS1-X remains online even in the event of a power supply failure.

Tech Specs

Video Input/Output Formats

The FS1-X supports a wide variety of video formats and connectors, as listed below.

SDI and Fiber

The FS1-X has two standard SDI video inputs and outputs, and two optional Fiber video inputs and outputs.

All SDI video inputs and outputs, including Fiber, are YCbCr 4:2:2 pixel format.

Fiber connections support 3G-SDI, SMPTE-259/292/296, 8- or 10-bits (optional)
Single-channel LC connector modules
Single-channel SC connector modules
Dual-channel LC connector modules

2.97 Gb 3G-SDI Level B (SMPTE 425-B / SMPTE 372)
2K 1080p 50
1080p 50 (SMPTE 274)

3G-SDI Level B 2.967 (2.97/1.001) Gb (SMPTE 425-B / SMPTE 372)
2K 1080p 59.94
1080p 59.94 (SMPTE 274)

3G-SDI Level A 2.97 Gb (SMPTE 425-A)
2K 1080p 50
1080p 50 (SMPTE 274)

3G-SDI Level A 2.967 (2.97/1.001) Gb (SMPTE 425-A)
2K 1080p 59.94
1080p 59.94 (SMPTE 274)

Dual-link HD-SDI, 2x 1.485Gb (SMPTE 372)
2K 1080p 50
1080p 50

Dual-link HD-SDI, 2x 1.4835Gb (SMPTE 372)
2K 1080p 59.94
1080p 59.94

HD-SDI, 1.4835 Gb (SMPTE 292)
2K 1080p 23.98, 29.97
1080p 23.98, 29.97
1080PsF 23.98, 29.97
1080i 59.94
720p 59.94

SD-SDI, 270Mb (SMPTE 259-C)
625i 50
525i 59.94


The HDMI input only accepts SMPTE video formats, and accepts embedded audio. Video input formats are RGB or YCbCr 4:2:2 pixel format for consumer video scan formats. Computer scan rates are not supported.

1080p 23.98, 24, 25, 29.97, 50, 59.94
1080i 50, 59.94
720p 50, 59.94
625p 50
625i 50
525p 59.94
525i 59.94

Component HD/SD Analog

The Component Analog Input accepts YCbCr 4:2:2 pixel format, configurable to SMPTE or Betacam levels. If the composite input is used, the component input is not available.

1080p 23.98, 24, 25, 29.97
1080PsF 23.98, 24, 25, 29.97
1080i 59.94
720p 50, 59.94
625i 50
525i 59.94

Composite SD Analog

The FS1-X composite analog video input/output formats are listed below. If the component inputs are used, the composite input is not available.

625i 50
525i 59.94 (switchable to NTSC 7.5 IRE or 0 IRE setup)


1080p 50 tri-level sync
1080i 50, 59.94 tri-level sync
720p 50, 59.94 tri-level sync
525i 59.94, 625i 50 analog composite
Genlock available to the current Video Processor 1 Input
Free run

Formal Exceptions

The following formats are not supported:
720p 23.98, 24, 25, 29.97
All 30, 60 frame rates
4:4:4 YCbCr, RGB, or XYZ inputs
4:2:2 YCbCr 12-bit inputs

Video Format Conversion

Standard FS1-X Conversions

The standard FS1-X can convert almost any input format to nearly any output format, as long as the frame rates are of the same frame rate family. The three families are:

23.98, 29.97, 59.94
25, 50

NOTE: See in Conversion Exceptionsin below

FRC FS1-X Enabled Conversion

When the factory installed Frame Rate Converter (FRC) option is present and active, conversions between different frame rate families are supported. An appropriate genlock reference format will be required.

Supported Conversions, FRC Enabled

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Input FormatOutput FormatGenlock Source Formats Supported
525i 59.94625i 50; 1080i 50625i 50; 1080i 50
525i 59.94720p 50; 1080p 25, 50625i 50; 1080i 50; 720p 50
525i 59.941080PsF 25625i 50; 1080i 50
525i 59.942K 1080PsF 25, 50625i 50; 1080i 50; 720p 50
625i 50525i 59.94; 1080i 59.94525i 59.94; 1080i 59.94
625i 50720p 59.94525i 59.94; 1080i 59.94; 720p 59.94
625i 501080PsF 29.97525i 59.94; 1080i 59.94
625i 501080p 29.97, 59.94; 1080PsF 29.97; 2K 1080p 29.97, 59.94525i 59.94; 1080i 59.94; 720p 59.94
1080i 50525i 59.94; 1080i 59.94; 1080PsF 29.97525i 59.94; 1080i 59.94
1080i 50720p 59.94; 1080p 29.97, 59.94; 2K 1080p 29.97, 59.94525i 59.94; 1080i 59.94; 720p 59.94
1080i 59.94625i 50; 1080i 50; 1080PsF 25625i 50; 1080i 50
1080i 59.94720p 50; 1080p 25, 50; 2K 1080p 25, 50625i 50; 1080i 50; 720p 50
720p 501080p 29.97, 59.94; 1080PsF 29.97; 2K 1080p 29.97 59.94525i 59.94; 1080i 59.94; 720p 59.94
720p 50525i 59.94; 1080i 59.94; 1080PsF 29.97525i 59.94; 1080i 59.94
720p 59.94625i 50; 1080i 50; 1080PsF 25