AdaptiveSync 1.1
Performance Criteria
Summary of Changes in version 1.1
- Updated the 5×5 G2G test – a testing sequence of 20 Gray to Gray transitions, to a subset of a 9×9 G2G test, involving 64 Gray to Gray transitions – i.e. all those excluding where the start and end are the same, and when the end value is Code Value 31.
- Transitioned from a fixed 20% overshoot allowance and fixed 15% undershoot allowance to one using a table of Delta-PQ values, enabling overshoot and undershoot allowance that is better optimized for human perception. The average overshoot for the data set is just slightly below 20%, but is in fact across a greatly increased test set using a 9×9 matrix instead of 5×5 and is thus a substantially improved test suite. The undershoot allowance is even tighter, again using a 9×9 test matrix to increase the scope of the test dramatically, and beyond that the average undershoot is now considerably tighter than 15%
- Incorporated the Jitter Methodology previously approved for v1.0 that provides a substantially more reliable method for measuring jitter.
- Incorporated the Factory Default Mode SCR previously approved for v1.0 that enables OEMs shipping to power regulated markets to configure the OSD to meet power regulation.
- Added additional test tools to the list of recommended tools, and added an additional method to aid with testing of AdaptiveSync + HDR capability.
View AdaptiveSync 1.0 performance criteria
Table 1
The following table summarizes the Adaptive-Sync Display specifications that vary across the logo performance tiers.
| Test | AdaptiveSync | MediaSync |
|---|---|---|
| Adaptive-Sync operation maximum refresh rate range | ≥ 144 Hz | ≥ 60 Hz |
| Adaptive-Sync operation minimum refresh rate range | ≤ 60 Hz | ≤ 48 Hz |
| Testing that Overdrive factory-default setting does not result in excessive Overshoot/Undershoot | See Table 2 below | See Table 2 below |
| Limit in average of the 64 G2G tests from a 5 × 5 matrix with factory-default overdrive | ≤ 5-ms average over the 64 tests | N/A |
| Flicker(max) on low-variability refresh rate tests | -50 dB | -50 dB |
| Flicker(max) with high-variability refresh rate tests | -50 dB | Test is not performed as a logo performance tier mandate |
| If SuccessiveFrameDuration IncreaseTolerance is present, minimum duration for variable | 8.5 ms | 1 ms |
| If SuccessiveFrameDuration DecreaseTolerance is present, minimum duration for variable | 9.75 ms | 1 ms |
| Video frame-to-frame jitter duration for 23.976- to 60-Hz video frame rates | ±0.5 ms | ±0.5 ms |
Table 2
Table 3
In addition to the logo-specific tests above, all qualifying devices must meet the following specifications that apply to all logo performance tiers:
| Test | Requirement | Units |
|---|---|---|
| Video Frame Drop Tolerance between minimum and maximum refresh rates reported to the OS | 0 | Dropped Video Frames |
| The 10 static frequency video frame rates that are to be supported within the Jitter specification limit, potentially by using display-side or GPU video frame duplication (e.g., frame-doubling, frame-tripling, etc.) | 23.976 24 25 29.97 30 47.952 48 50 59.94 60 | Hz, Locked Video Frame Rates |
For the full details about VESA certification criteria for the AdaptiveSync Display logo, please download the Adaptive-Sync Display Certification Test Specification (version 1.1) from VESA.