PEP Formula:
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Definition: PEP is the highest instantaneous power output produced by a transmitter during modulation.
Purpose: It's a key measurement in RF engineering to ensure transmitters operate within their power limits.
The calculator uses the formula:
Where:
Explanation: The square of peak voltage is divided by twice the resistance to calculate the maximum power.
Details: Proper PEP calculation ensures transmitter compliance with regulations and prevents equipment damage.
Tips: Enter the peak voltage in volts and resistance in ohms (default 50Ω for RF systems). All values must be > 0.
Q1: Why is resistance typically 50Ω?
A: 50Ω is the standard impedance for most RF systems and coaxial cables.
Q2: How do I measure peak voltage?
A: Use an oscilloscope to measure the maximum voltage during modulation peaks.
Q3: What's the difference between PEP and average power?
A: PEP measures instantaneous peaks while average power measures power over time.
Q4: When would I use a different resistance value?
A: For systems with non-standard impedance (e.g., 75Ω for video or 600Ω for audio).
Q5: Does PEP account for modulation type?
A: No, this is a basic calculation. Different modulations may require additional considerations.