MOUSE SCROLL SPEED & WHEEL ENCODER TEST
HIGH-PRECISION NOTCHES/SEC, SCROLL VELOCITY & REVERSE-SCROLL FAULT DETECTOR
warning
REVERSE-SCROLL FAULT DETECTED! Encoder emitted anomalous reverse direction pulses during a continuous sweep.
CURRENT SPEED (NPS)
0.0
NOTCHES / SEC
PEAK BURST (NPS)
0.0
MAX RECORDED
TOTAL SCROLLED
0 px
0.00 METERS
ENCODER HEALTH
100%
0 FAULTS DETECTED
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SCROLL UP (0)
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SCROLL DOWN (0)
Scroll inside this arena to test wheel detents, velocity curves, and encoder stability
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REAL-TIME BIDIRECTIONAL SCROLL VELOCITY CURVE
0 px/s
Mouse Scroll Wheel Hardware & Encoder Diagnostics
Optical vs. Mechanical Encoders
Mechanical encoders use internal physical brush contacts that suffer from wear and dust buildup over time. Optical encoders (such as TTC Gold Optical or Razer optical wheels) use infrared beams for zero mechanical contact wear and indefinite lifespan.
Detecting Reverse-Scroll Glitches
When scroll wheels jump up while scrolling down, it indicates encoder contact oxidation or dust contamination. Our real-time glitch monitor detects these single-tick reverse phase anomalies instantly to determine if your hardware requires cleaning or replacement.
Scroll Speed (NPS & PPS)
Notches Per Second (NPS) measures the raw rate of discrete mechanical steps actuated by your finger. High-end free-spin wheels (like Logitech MagSpeed or Razer Hyperscroll) can exceed 200+ NPS in unlocked inertia mode.