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#                                    PROTON HFR Release Notes                                     #
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Latest Release:

Package 3 - 13-Nov-2025
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Includes:

- Software (PROTON OS)       v1.6.1
- Firmware (Video Processor) v1.2
- PROTON Updater             v1.2.7.2
- PROTON Control             v1.4.3.1

Changes:

- Clock tuning with the 'system sdi clock_tune' command has been improved so that it now always
  runs in constant time (instead of taking longer for bigger offsets). As a downside this requires
  a pipeline restart when the clock tuning is changed. This change does reset a previously
  configured clock tuning to 0 so if the camera was calibrated make sure to backup the previous
  value and set it again after the update.
- Fixed documentation regarding auto exposure speed, the range is [0, 100] not [1, 100].
- Fixed auto exposure showing visible jumps in image brightness in some situations.
- Fixed color bar test pattern for interlaced video output.
- Fixed left and right audio channels being swapped in some cases.
- Improved black gamma documentation, reference manual now has a diagram explaining the effect.

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Previous Releases:

Package 2 - 24-Sep-2025
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Includes:

- Software (PROTON OS)       v1.5.2
- Firmware (Video Processor) v1.1
- PROTON Updater             v1.2.7.1
- PROTON Control             v1.4.2.0

Changes:

- Renamed "Quad" output mode of the HFR to "SQD" (square division) in command help and
  documentation to be consistent with the standard.
- Made 12G output of the HFR optional. SQD and 2SI packing are paid features which are disabled by
  default now.

Package 1 - 19-Sep-2025
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Includes:

- Software (PROTON OS)       v1.5.1
- Firmware (Video Processor) v1.1
- PROTON Updater             v1.2.7.1
- PROTON Control             v1.4.2.0

First non-beta release. Compared to the v1.5.1_test version this releases comes with the following
fixes and improvements:

- Fixed manual and auto-exposure control.
- Fixed image flip and rotation.
- Fixed clock configuration errors which could occur on some devices causing them to boot with no
  image output and a red blinking LED.
- Improved error detection and logging.
- Added new 'system sdi' command group which contains the 'amplitude' and 'slew_rate' commands
  which can be used to tune the SDI output signal to increase compatibility with different cable
  lengths and SDI receivers.
- Removed LSC presets for S-Mount lenses from the HFR as it uses C-Mount lenses for which there are
  no presets yet.
- Added "2SI" packing mode for the 12G output of the HFR. In this mode each phase is directly
  mapped to one of the 4 sub images of the 12G SDI signal. This allows for easier decoding without
  a frame buffer.