Frame Synchronizers

5IN / 5OUT with Up/Down/Cross Converter
All-Round Frame Synchronizer


Frame synchronizer equipped with an array of essential functions used in video production and that allow multi-channel routing (5-input/5-output video). Supports 3G-SDI and HD/SD-SDI input/output as standard and includes all typical FS and CC (standard) features. The unit provides up/down/cross-conversion on each input as standard and allows 1080i to 720p, or 720p to 1080i conversion. Highly versatile audio signal processing capability with delay adjustment and remapping functions plus a sampling rate converter. Combining these varied options allows a single unit to provide optimal functionality for all video production scenes, including those used in transmission, outside broadcasting, news reporting, production, editing and distribution.


Upgrades with an eye toward next-generation production (environments) have been implemented.

HDR (High Dynamic Renge)*, WCG (Wide Color Gamut), etc., next generation production-capable upgrades are now available.


Registration of Log Gamma curves for HDR (High Dynamic Range)* processing




Conforms to ITU-R BT.2020 WCG



  • 4K 2SI signal support
  • Frame rate conversion function
  • Low frame rate (23.98p, 30p) 4K camera signal support
  • Not compatible with OOTF for Hybrid Log-Gamma (HLG) as specified in BT.2100. Thus, in conversion between HLG and other gamma curves (SDR or SMPTE ST 2084), scene-referred conversion is available but not display-referred conversion.

Details on FA-505 upgrade-based enhancements are summarized here.
For further details on upgrading your unit, contact your FOR-A representative.




Block Diagram




Reasons to Buy


1.Five processors in a single unit

A sister model of the 10-input/10-output FA-1010, which has 10-channel processing, the FA-505, with 5 inputs, 5 outputs and 5-channel processing, also comes equipped with features not found in the FA-1010, including an up/down/cross/aspect converter function. Like the FA-1010, the FA-505 is not simply 5 processors enclosed in a single housing, but 5 interconnected internal circuits. It implements all the various processors and clean switch functions required to build a system, and enables multi-channel signal processing on each channel with no cable connections. In addition, as ancillary and audio signal data are handled separately from video signals, concerns about ancillary data such as subtitles and time codes being erased can be allayed.



2.Powerful audio processing

With 16 channels of 3G/HD (synchronous/asynchronous) and SD-SDI*1 (synchronous) embedded audio on each input supporting up to 80 channels on all 5 inputs, a versatile array of signal processing is possible, including standard SDI embedding and de-embedding, and if an optional expansion card is installed, A/D and D/A conversion. The analog audio input option is equipped with a microphone head amplifier and phantom power, enabling direct condenser microphone input with no need for impedance conversion. The unit also includes sampling rate converters as well as various other processes such as level adjustmentdelay adjustmentdown-mixing*2, remapping, and polarity conversion.

  • 12-channel audio SD-SDI output
  • Down-mixing supports only SDI-embedded audio signals



3.Space-saving form factor

With the capability of 5 processors fit into a 1U size, the FA-505 provides a smaller equipment footprint. In addition, it is perfect for systems that handle a large number of inputs and outputs, such as network operation centers, and systems where equipment space is limited, such as mobile video production trucks.



4.Up/down/cross/aspect converter

The FA-505 comes equipped with an up/down/cross/aspect converter function on each input. 3G, HD, and SD signals can be mutually inter-converted.



5.Color correction function on each input

In addition to proc amp., the FA-505 incorporates a color correction function, allowing color correction to be performed in three color correction modes, which offer a flexible color adjustment environment that includes gamma adjustment, clipping, and various level adjustment functions.



6.Inter-convertible 3G-SDI level-A/B signals on each input

Connectivity difficulties can arise when building a 3G-SDI system that mixes level-A and level-B-compatible products. The FA-505 allows a system to be assembled that unifies the signals of either kind, with level-A/B input signals inter-convertible on each channel.



7.5x5 clean switch

The FA-505 comes standard with 5x5 video and audio clean switches to route the five output SDI signals after processing.



8.SDI I/O relay bypass

To cope with a power outage or emergency, the FA-505 includes an I/O bypass function.



9.Powerful audio remapping

You can remap which audio signal channels to assign to each video or each audio channel. Up to 80 channels of audio signal can be freely re-mapped as standard, or up to 112 channels when optional cards are installed. Delay adjustment and polarity conversion are also available on each channel, allowing systems to be configured without any special audio processing equipment.



10.Usable as a 4K processor

A video channel link allows you to collectively control channel parameters you want linked. The FA-505 offers a special 4K mode that uses this capability. 4K (QFHD) square division signals can be controlled as if they were one signal.



11.An abundance of control options

The FA-10RU remote control unit provides dedicated access to the full features of the FA-505 and can control up to 100 FA-505s. One FA-505 is also able to be controlled from multiple remote control units or GUIs at the same time (with up to five concurrent connections possible).
The FA-10DCCRU remote control unit for color correction has inherited the traditional operating style of FOR-A's color corrector series of products and offers direct access to a variety of parameters for smooth color adjustment.
The FA-AUX30 remote control panel facilitates access to the rich functionality of the FA-505. Its switch box works over a GPI connection and can be used to freely assign router panel button functions to the 30 front panel buttons, and to assign shortcuts for each function. In addition, preset patterns are prepared in advance in the GPI settings, allowing you to begin using the FA-AUX30 immediately, with no detailed configuration required.



12.Easy-to-use GUI

The FA-505 comes standard with a dedicated application that runs on Windows, providing full access to many functions, and allows a wide variety of settings. Web server functionality is also implemented in the main unit, allowing adjustments* to be made to various parameters from mobile and tablet devices.

  • Available for a limited number of function and parameters



13.Efficient cooling system

The FA-505 is designed to offer efficient cooling during extended use. Air that is taken in through the front panel inlet holes cools the inside power supply and other components, and is exhausted through the side and rear panels. The air intake is pulled straight through the inside and out the exhaust vents for efficient cooling, reducing retention heat throughout the whole unit.



HDR*, WCG-conforming upgrades with an eye toward next-generation production (environments) have been implemented.


Registration of Log Gamma curves for HDR (High Dynamic Range)* processing

HDR (High Dynamic Range) video now supported. Necessary Log Gamma curve files for signal conversion can be registered to the main unit, and to allow an appropriate Log Gamma curve to be assigned.



Conforms to ITU-R BT.2020 WCG(Wide Color Gamut) specifications.

Conforms to ITU-R BT.2020 Wide Color Gamut standards, allowing for ITU-R BT.2020 / ITU-R BT.709 interconversion.



4K 2SI signal support

Until now, only 4K SQD (Square Division) signal support was available, but with a software upgrade, 2SI (Sample Interleave) signal is now also supported.



Frame rate conversion function

2x, 1/2x frame rate converter (29.97p to 59.94p, 50p to 25p, etc.) has been installed.



Low frame rate (23.98p, 30p) 4K camera signal now also supported.

Low frame rate (23.98p, 30p, etc.) 4K camera video output is now available.


  • Not compatible with OOTF for Hybrid Log-Gamma (HLG) as specified in BT.2100. Thus, in conversion between HLG and other gamma curves (SDR or SMPTE ST 2084), scene-referred conversion is available but not display-referred conversion.


Frame synchronizer


FOR-A's frame synchronizers have always exhibited superior performance when processing poor quality video signals. Frame, Line, and AVDL synchronizer modes are available. Every mode allows both H and V ancillary data to be passed through*.

  • Different input/output formats may limit the number of packets that can pass through.




Frame Sync mode

Aligns the output with a genlock signal and can be used whether or not the genlock signal and video input signal are synchronized.



Line Sync mode

Locks the output to a genlock signal within a range of ± 1/2 lines and can be used only when the video input and genlock signals are synchronized.



AVDL mode

Locks the output to a genlock signal with a constant time offset of 5H in HD and 1H in SD. The feature can only be used when the video input and genlock signals are synchronized.



Line Sync (Minimum) mode

Outputs the input signal with minimum delay. It can be used only when the video input and genlock signals are synchronized.

Proc. Amp.


Allows video, chroma and black levels and HUE to be adjusted. Individual channels are also able to be adjusted and to control multiple channels collectively via channel link. A split view function allows pre- and post-correction results to be examined.


Up/down/cross/aspect converter


Up/down/cross/aspect converter function also available on each processing circuit. 3G, HD, and SD can be mutually inter-converted.

  • Up converter: Converts SD to HD, HD to 3G, and SD to 3G.
  • Down converter: Converts 3G to HD, 3G to SD, and HD to SD.
  • Cross converter: Converts 1080i to 720P and 720P to 1080i.
  • Aspect converter: Perform various forms of aspect ratio conversion, including letterbox and side cut.

Color corrector


FOR-A’s color corrector, with its proven track record in the broadcasting industry, comes standard on each channel. Three available color correction modes can be freely used on the five input channels, with color adjustment performed alone or in groups. It is even possible to link channels while maintaining differences between parameters.


  • Balance mode: Provides RGB color correction
  • Differential mode: Provides color correction without upsetting white balance
  • Sepia mode: Converts colors into a monotone or sepia


Each parameter comes with a Unity button, a familiar FOR-A color correction feature that allows parameters to be restored to their default state with the push of a button.
A split view function allows pre- and post-correction results to be examined. Also able to be used as a 4K color corrector in 4K mode.

Clip function


The FA-505 has inherited another set of familiar FOR-A color corrector features, Y/PB/PR and RGB clip functions that allow color information to be kept within an optimal range.

  • Y/PB/PR clip: Adjusts excessively bright or dark color information within a range using white and black clip functions while maintaining white balance.
  • RGB clip: Adjusts excessively bright or dark color information within a range using white and black clip functions, compensating for unintended color information generated during recording.

Selector functions on SDI input and output


The FA-505 comes with an SDI input and output selector function, allowing for the input processing path and output terminal to be selected.



Clean switch


The output unit comes equipped with a clean switch that delivers smooth changeover of both video and audio, free from noise and shock. Switching methods include Direct Mode, which allows direct crosspoint operation, Take Mode for switching multiple crosspoints using a single Take operation, and Salvo Mode, which saves and switches cross point settings all at once. Clean switching allows the FA-505 to be utilized as a processing-based routing switcher.


Delay adjustment


The FA-505 comes equipped with a frame buffer that stores up to 8 frames. Delay adjustments can be individually applied to each channel.


Input and output bypass


The FA-505 comes equipped with a bypass function that allows video to bypass processing and be output in case of power failure or an emergency.



Ancillary (ANC) signal that is superimposed on video signals are first isolated, then processed separately, from the processing circuits. Whether to have ANC data pass through directly on each channel, or to have the superimposed ANC data re-superimposed or left blank, can be selected.


Time code inserter/generator


In addition to inserting external LTC time codes, use of the internal time code generator can be selected. For each channel, select whether to Pass or comply with the external or internal TC. The built-in LTC connector can be used not only for external LTC input but also as the external output of the internal TC (selectable).


Test signal output


Each channel is able to output a 100%, 75% or SMPTE color bar, or Ramp signal as a test signal.


Event memory


Up to 100 different parameter settings are able to be saved in the internal event memory of the main unit. The settings data can be backed up and restored using a PC.



SNMP is supported as standard and can even be used to monitor power supply, fan, and signal alarms.

Distribution outputs


Each output of the FA-505 is capable of output distribution. There is no need to prepare a separate distributor in the case an additional output is required.



Sixteen channels of embedded audio for each video line


16 channels of embedded audio per line of 3G/HD (synchronous/asynchronous) or SD-SDI* (synchronous) input supports up to 80 channels of powerful audio input processing on all 5 inputs.

  • 12 channels of audio for SD-SDI output



Supports up to 112 channels with the addition of the optional audio card


The FA-505 provides digital and analog audio I/O as options. An optional expansion card allows A/D and D/A conversion, MUX/DEMUX and remapping, in combination with the embedded audio signal.




FA-10AES-BL: Balanced digital audio I/O

Enables 4 lines (8 channels) of balanced digital audio input/output.



FA-10AES-UBL: Unbalanced digital audio I/O

Enables 4 lines (8 channels) of unbalanced digital audio input/output (4-channel input/output switching).



FA-10ANA-AUD: Analog audio I/O

Enables 2 lines (4 channels) of balanced or unbalanced analog audio input/output.

Gain adjustment


Gain adjustment available on each audio channel. A Unity button allows values to revert to default at the push of a button.



Sampling rate conversion


All digital audio channels come equipped with sampling rate conversion circuits that allow the system output to be synchronized.



Delay adjustment


Delay adjustment can be set for each audio channel in 1-ms steps, up to 1,000 ms. Collective delay adjustment for each audio grouping is also possible. A Unity button allows values to revert to default at the push of a button.



Channel remapping


Audio channels to be embedded into video can be freely changed and re-ordered, remapped, across all five video channels. This function is a useful as a replacement for an optional audio channel or for main- and sub-audio channels.





Useful for tasks such as converting from 5.1-channel audio to stereo, this function allows the assigned channel to be changed to any L, R, Center, Ls or Rs channel, the gain to be adjusted, and the down-mix mode selected. A Mono Sum mode also allows a stereo channel pair to be converted to monaural.



Polarity reversal


The polarity of each audio channel can also be reversed, allowing you to correct an audio channel that has unintentionally fallen out of phase.



Master mute


This function allows you to mute the audio for each video channel or optional audio card.


Test signal output


This function allows you to output a 500 Hz or 1 kHz reference signal from each video channel or optional audio card, or a reference signal from each audio channel.