EMI/EMC Standards CISPR 32

• International: CISPR 32:2015 (Electromagnetic compatibility of multimedia equipment – Emission requirements).
• European Equivalent: EN 55032.
• Indian Equivalent (BIS): IS 16387:2018.

Note: While IS 13252 is the Safety standard for IT equipment, IS 16387 is the specific EMC standard adopted by the Bureau of Indian Standards (BIS) that mirrors CISPR 32.

This standard applies to Multimedia Equipment (MME) with a rated RMS supply voltage not exceeding 600V. Common examples include:

• Information Technology (ITE): Laptops, Printers, Routers, Servers, POS Terminals.
• Audio/Video Equipment: Smart TVs, Speakers, Amplifiers, Musical Instruments.
• Broadcast Receivers: Set-top Boxes, Satellite Receivers.
• Lighting Control: Entertainment lighting equipment (for stage/studio).

The testing is divided into two environmental classes: Class A (Commercial/Industrial) and Class B (Residential - stricter limits).

• Conducted Emissions: Measures interference fed back into the power network (Frequency: 150 kHz – 30 MHz).
• Radiated Emissions: Measures interference radiated through the air from the device enclosure (Frequency: 30 MHz – 6 GHz, depending on internal clock speed).
• Telecommunication Ports: Measures noise on Ethernet/LAN ports (if applicable).

To ensure global and local acceptance of your test reports, the testing laboratory must hold valid accreditation:

• NABL (National Accreditation Board for Testing and Calibration Laboratories): Essential for Indian BIS compliance.
• ILAC MRA Signatory: Required if you intend to use the report for International approvals (like CE or FCC).

Note: This duration assumes the product passes on the first run. If "debugging" (fixing EMI leaks using ferrites or shielding) is required, the timeline may extend.

• 1 x Functional Unit: A completely assembled, production-ready sample.
• Accessories: All power adapters, remote controls, and specific cables used.
• Auxiliary Equipment: If your device needs a source (like a laptop for a printer or a USB drive for a TV) to operate in its "worst-case" mode, this must be provided.

Costing is not fixed; it is variable based on the complexity of the device:

• Single vs. Three-Phase: Three-phase equipment requires larger setups and costs more.
• Number of Ports: Devices with multiple LAN/Telecom ports require additional conducted emission tests.
• Debug Time: If the product fails initially, hourly engineering charges for the chamber time will apply.

For a smooth testing process, the following technical documents are mandatory:

• User Manual: Must include the Class A warning statement (if applicable).
• Block Diagram & Schematics: To help engineers identify high-frequency clock sources.
• PCB Layout: Critical for debugging if emissions are high.
• Rating Label: Draft copy of the product label showing voltage/current.