USB HID REPORT PROTOCOL NKRO MATRIX

N-Key Rollover (NKRO) & Simultaneous Key Matrix Benchmark

Verify 6KRO vs NKRO simultaneous key press limits on your physical keyboard. Test USB HID report protocols and key blocking diode matrix limits.

硬件遥测与诊断

专业诊断控制台

高精度硬件诊断工具。

实时硬件遥测指标等待键盘按键输入

按下键盘任意键即可实时映射显示

机械键盘全键测试台

CAPS

NUM

SCRL

已触发按键数:

0 / 84 (0%)

当前长按键位:

0 键

峰值同时无冲数:

0 键

微秒连击故障:

0 个异常

打字实时速率 (WPM):

0 APM

USB NKRO 全键无冲:

准备就绪

诊断协议与流程

如何进行屏幕测试 (01, 02, 03)

准备工作

清洁显示器表面灰尘，关闭环境光自动感应，并将屏幕设置为原生分辨率与最高刷新率。

开始执行

进入全屏模式 (F11)，利用诊断控制栏依次切换并观察各种专业测试图案。

结果评估

在暗室环境下从不同视角细致观察屏幕均匀度、坏点与拖影，参考工程指南判断面板品质。

硬件架构解析

面板显示技术深度解析

专业级 IPS 面板 (In-Plane Switching)

极致色彩精准度与广视角，广泛用于专业调色显示器。暗室环境下存在轻微 IPS Glow 漏光现象。

消费/电竞 IPS (Fast IPS / Nano IPS)

专为电竞优化的超高刷新率与极速灰阶响应，但静态对比度较 VA 面板略低。

VA 面板 (Vertical Alignment)

原生 3000:1+ 超高静态对比度与纯正暗部表现，常用于曲面屏，高速运动下偶有暗部拖影。

OLED (有机发光二极管) 与 QD-OLED

像素级独立自发光，实现真正的纯黑、零拖影近乎即时响应及无穷大对比度，受自动亮度限制 (ABL) 调控。

Technical FAQs & Helpful Content

Frequently Asked Questions (N-Key Rollover (NKRO) & Simultaneous Key Matrix Benchmark)

关于此项诊断工具、校准步骤及显示器技术标准所需了解的一切。

01.What is N-Key Rollover (NKRO)?

NKRO allows every key on the keyboard to be pressed simultaneously without key blocking, dropping, or ghosting.

02.What is 6KRO (6-Key Rollover)?

6KRO restricts USB HID reports to 6 concurrent alphanumeric keys plus modifier keys (Ctrl, Shift, Alt, Cmd).

03.What is keyboard ghosting?

Ghosting occurs on cheap membrane keyboards when pressing 3 adjacent keys causes an unpressed 4th key to falsely trigger.

04.How do diodes enable NKRO in mechanical keyboards?

Individual diodes placed on every switch circuit prevent electrical current from backflowing across grid traces.

05.How do I perform an NKRO rollover test?

Press both palms down across your keyboard matrix; the counter records total simultaneous registered keys.

06.Why do some USB keyboards require pressing a shortcut to enable NKRO?

Some keyboards default to 6KRO for legacy BIOS compatibility; press Fn+N or Fn+F12 to switch to USB NKRO mode.

07.Does USB protocol natively support NKRO?

Standard USB HID boot protocol limits reports to 6KRO; NKRO keyboards use custom report descriptors or virtual hub endpoints.

08.Is NKRO necessary for rhythm games like Osu! or IIDX?

Yes, rhythm games require simultaneous multi-key chords; 6KRO can cause dropped inputs during dense note patterns.

09.Can Bluetooth keyboards support full NKRO?

Most Bluetooth HID profiles cap simultaneous key reports at 6KRO to conserve wireless bandwidth and power.

10.How do I export my NKRO rollover test score?

Click 'Download Certificate' to export a cryptographically signed report certifying your keyboard's peak NKRO count.

不确定接下来该运行哪项测试？需要故障排除建议？

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