HOW TO USE (LAB FLOW)

1) Choose a MODE on Page 1

2) Press START FULLSCREEN

3) Adjust brightness / refresh settings on your device

4) Exit with ESC or tap/click screen

WHAT EACH MODE REVEALS

1 Inversion: checker shimmer, panel voltage artifacts

2 Overdrive: overshoot halos, VA smear, response asymmetry

3 Dithering/FRC: near-grey shimmer, temporal noise patterns

4 Scan: rolling scan direction (great for phone camera)

5 Pulse: PWM-like modulation visibility and comfort checks

DISPLAY CARE

OLED safer: most modes are balanced (not static full white)

Comfort: reduce brightness in dark rooms

Pulse mode: keep amplitude low if sensitive

FAQ

Why tiny HUD? so fullscreen stays “lab-clean”.

Why does it look different per screen? panels + processing vary widely.

Can this measure exact ms? it’s visual-first; use instruments for absolute values.

How do I exit? ESC or tap/click screen (always).

NOTES (SHORT)

Inversion: try 1PX checker + alternate at 60Hz.

Overdrive: if you see bright/dark halos, that’s overshoot.

FRC: near-grey shimmer often indicates temporal dithering.

Scan: film slow-motion; the wipe reveals scan timing.

Pulse: square wave is harsher; sine is gentler.

KEYWORDS (NATURAL)

display test patterns • panel inversion test • overdrive ghosting test

FRC dithering detector • scan direction test • PWM pulse visualiser

enthusiast monitor test • lab display tool • fullscreen display patterns