Oscilloscope line adapter
A protected coupling that lets an oscilloscope show the actual mains waveform and its harmonic content, replacing a proprietary dirty-electricity index with a measurable spectrum.
conducted, adapter dependent
Last verified 12 August 2026.
Also searched as: line probe, mains waveform adapter
- Band covered
- conducted, adapter dependent
- Quantities measured
- electric field strength, frequency
- Typical price
- $100–$1000
Detects
- Actual waveform distortion, transients and carrier frequencies on the circuit
- Which harmonic order a filter is or is not removing
Cannot detect
- Radiated fields
- Exposure, in the sense of any exposure standard
What to insist on
- Galvanic isolation and correct voltage rating for the mains supply
- Documented frequency response
Related records
- Dirty-electricity (line harmonics) meter
Plugs into a socket and reports high-frequency harmonic content riding on the mains, the quantity used to judge dimmers, LED drivers, inverters and switch-mode supplies.
Instruments
Sources
- sbm-2024 Building Biology Evaluation Guidelines for Sleeping Areas (SBM-2024) — Institut für Baubiologie + Nachhaltigkeit (IBN), 2024. ngo, link checked 2026-08-12.
Same record, other formats