Device BenchGuides · Methodology & fixes
Understand the readings.
These guides explain what the testers measure, how to repeat a check and what to try when a result looks wrong. Each one links to the tool it covers.
-
Game input
Stick Drift: Measurement, Limits, and Next StepsMeasure a stick's resting offset, read the comparison bands, and compare deadzones, calibration, cleaning and replacement.
-
Input
Key Rollover and Ghosting, ExplainedHow keyboard matrices and report formats affect key combinations, what NKRO means, and how to check the chords you use.
-
Input
Keyboard Chatter: Fix a Key That Types TwiceConfirm that a key is typing twice, then compare cleaning, firmware settings and replacement.
-
Audio in
Microphone Too Quiet? Fix Low Mic VolumeCheck microphone distance, input gain, operating-system settings and browser processing.
-
Audio in
What Is dBFS? Decibels Relative to Full Scale, ExplainedRead digital levels, leave room below 0 dBFS and recognize clipping.
-
Video in
Why Webcams Look Grainy and How to Fix ItWhy dim light makes a webcam grainy, how front light fixes it, and when to clean the lens or check the resolution.
-
Display
Dead Pixel Warranty Rules: ISO 9241-307, ExplainedWhat ISO 9241-307 standardizes, how to find your model's pixel policy, and how to document a claim.
-
Measurement
How a Bank Card Measures a Screen's Pixel DensityUse a card match to estimate pixels per millimeter, pixel density in ppi and physical screen size.
-
Choosing a timer
Classroom Timer or Interval Timer?Compare a classroom countdown with repeating work-rest intervals, and check how each behaves in a background tab.
How these guides are written
Each guide starts from a measurement you can run in your browser, with nothing uploaded, and turns it into practical checks. Topics include resting-axis thresholds, standard dimensions and audio levels. The guides also say where results vary and which fixes can be temporary.
The guides list Device Bench as the publisher, give publication and review dates, and link the standards or platform documentation they use. See How Device Bench tests its browser instruments for the evidence, refusal, privacy and correction policy.