Basic Qualification · B-008 Interference and suppression · B-008-003-001
Quel terme décrit la création de nouvelles composantes de fréquence indésirables lorsqu'un ou plusieurs signaux interagissent dans un dispositif non linéaire?
- ADistorsion linéaire
- BDistorsion de repliement
- CIntermodulation
- DDistorsion de phase
Correct answer: C — Intermodulation. Question tirée de la banque officielle d'ISDE.
Why
Intermodulation happens when two or more signals mix inside a device that does not behave linearly, creating new frequencies that were not there before. The full explanation — and one for every question — is in Pro.
Practise this section
Interference and suppression is section B-008 of the Basic exam: When things interfere: harmonics, overload, RFI to and from your station, filters, ferrites and how to fix the neighbour's TV.
Drill B-008 — free, no account