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Compliance Learning Center

Compatible Electronics believes that the more you know, the better we can work together to meet your needs. Here you'll find in-depth articles covering EMC and wireless testing methods, product family standards, generic standards, EMC design techniques, and international compliance — written by our accredited engineering team.

EMC / EMI Fundamentals

Start here for foundational knowledge on electromagnetic compatibility concepts, measurement units, and shielding principles.

Electromagnetic Compatibility (EMC) — Introduction
What EMC is, why it matters, and how the regulatory framework is structured.
EMI Measurement Units — Part 1
Decibels, dBµV, dBµA, and the measurement units used in EMC testing.
EMI Measurement Units — Part 2
Field strength, dBµV/m, antenna factors, and radiated measurement concepts.
Electromagnetic Shielding Pitfalls
Common mistakes in shielding design and how to avoid them.

Testing Methods

Detailed guides to the major EMC and wireless test method standards — measurement procedures, device categories, and accreditation scope.

ANSI C63.4
Measurement of radio-noise emissions from low-voltage equipment — FCC Part 15 Subpart B unintentional radiators.
ANSI C63.10
Testing procedures for unlicensed wireless devices — FCC Part 15 Subparts C, D, E, F, G, H.
ANSI C63.17
Testing of Unlicensed Personal Communications Service (UPCS) devices under FCC Part 15 Subpart D.
EN 55011 / CISPR 11
Emissions standard for industrial, scientific, and medical (ISM) radio-frequency equipment.
EN 55013 / CISPR 13
Radio disturbance standard for broadcast receivers — withdrawn March 5, 2017, replaced by CISPR 32.
EN 55015 / CISPR 15
Emissions standard for electrical lighting and similar equipment including LED drivers.
EN 55022 / CISPR 22
Legacy ITE emissions standard — discontinued March 5, 2017, replaced by CISPR 32.
EN 55024 / CISPR 24
Legacy ITE immunity standard — replaced by CISPR 35 (EN 55035) for multimedia equipment.
EN 55032 / CISPR 32
Consolidated emissions standard for multimedia equipment, replacing CISPR 22, CISPR 13, and EN 55103.
EN 55035:2017 / CISPR 35
Immunity standard for multimedia equipment — the replacement for CISPR 24 / EN 55024.
CISPR 24 vs CISPR 35 — Comparison
Key differences between the old and new multimedia equipment immunity standards.
EN 55103-1
Emissions standard for professional audio, video, AV, and entertainment lighting control apparatus.
MIL-STD-461
US DoD EMI control requirements for military subsystems and equipment — CE/CS/RE/RS categories.
ETSI EN 300 386
EMC standard for telecommunication network equipment under the EU EMC Directive.
ETSI EN 301 489 — EMC Spec List
Full list of all EN 301 489 parts for radio equipment under the EU Radio Equipment Directive.
EN/IEC 61204-3
EMC requirements for low-voltage DC power supplies — emissions and immunity.
EN/IEC 61326-2-1
EMC requirements for measurement, control, and laboratory equipment in EMC unprotected applications.
EN/IEC 61326-2-3
EMC requirements for transducers with integrated or remote signal conditioning.
EN/IEC 61326-2-6
EMC requirements for in vitro diagnostic (IVD) medical equipment.
EN/IEC 61000-3-3
Voltage fluctuations and flicker limits for equipment ≤16 A per phase connected to the public supply.
KN22 and KN24
Korean technical requirements for EMI emissions and EMS immunity — KC certification for ITE.

By Product Family Standard

Articles organized around the equipment category your product falls into — the starting point for identifying which standards apply.

About Product Family Standards
Overview of how product family standards work and how to determine which applies to your product.
Multimedia Equipment (MME)
IT equipment, audio/video, TVs, streaming devices — CISPR 32 and CISPR 35.
Information Technology Equipment (ITE)
Computers, printers, networking — legacy CISPR 22/24 and transition to CISPR 32/35.
Industrial, Scientific & Medical (ISM) Equipment
ISM RF equipment — CISPR 11 / EN 55011 emissions requirements.
Alarm Systems
EMC requirements for security and alarm systems — EN 50130-4.
Audio, Video, and Lighting
Professional AV equipment, EN 55103-1, and lighting EMC under CISPR 15.
GNSS User Equipment (GUE)
EMC requirements for GPS and global navigation satellite system receivers.

By Generic Standard

When no product-specific standard applies, the generic standards fill the gap. These articles cover the full IEC 61000-6 series.

About Generic Standards
What generic standards are, when they apply, and how the IEC 61000-6 series is structured.
Residential, Commercial & Light Industrial
IEC 61000-6-3 (emissions) and IEC 61000-6-1 (immunity) — the residential/commercial generic pair.
IEC 61000-6-3
Generic emissions standard for residential, commercial, and light-industrial environments — Class B limits.
IEC 61000-6-4
Generic emissions standard for industrial environments — Class A limits.

Design Techniques

Practical EMC design guidance for engineers — grounding, shielding, filtering, and PCB layout.

Grounding Systems — Part I
RF impedance, single/multipoint/hybrid grounding, PCB ground planes, and cable shield termination.
Grounding Systems — Part II
Mixed-signal partitioning, chassis bonding, filter placement, and switching PSU grounding.

FCC Authorization

Guides to navigating the FCC equipment authorization process for US market access.

FCC SDoC Authorization Guide
When to use Supplier's Declaration of Conformity vs. FCC Certification — rules, labeling, and records.

Questions? We Can Help.

Compatible Electronics is an NVLAP-accredited EMC and safety testing laboratory (Lab Code 200527-0) and FCC-authorized TCB with three Southern California locations. Our engineers are available to discuss your compliance requirements and testing options.

📋 Request Test Quote 📞 Call 949‑587‑0400

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