TCS Pune

PWM frequency test

Guided diagnostic

PWM frequency test

Verify timer-derived PWM frequency and duty cycle.

High riskPWM-capable MCUs

Tools checklist

  • Digital multimeternUSB data cablenCurrent-limited bench supplynLogic analyser or oscilloscope when indicated

Symptom-to-checkpoint workflow

Start at checkpoint 1. Record the reading, then choose Pass or Fail to follow the correct branch.

Checkpoint 1 · Calculated frequency

Method: Use clock / (prescaler × (TOP + 1)) or board timer formula

Expected: Calculation matches configuration

⚠ Do not drive inductive loads directly.

Record this diagnostic run

Log in to save measurements and submit this run to an instructor.

Bench safety

Disconnect power before wiring changes or continuity testing. Confirm polarity and voltage limits. Use a current-limited supply for suspected shorts.

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