Oki Engineering Co., Ltd. - EMC Test Laboratory
About
Oki Engineering, part of the OKI group and trading since 1997, runs its EMC test laboratory at Honjo in Saitama Prefecture, north-west of Tokyo, and its accreditation record is published with dates and numbers rather than claims: accredited to ISO/IEC 17025:2017 by the Japan Accreditation Board on 6 July 2010 under registration RTL03100, registered with the FCC as an EMC test facility on 19 March 2015 under registration 817278, and VCCI-registered under Article 15 on 28 January 2013 as A-0163, with three iNARTE-certified EMC engineers on staff. Reports are recognised internationally under the mutual recognition arrangements. The automotive practice is where it leads. Testing runs in a dedicated automotive anechoic chamber with a VCA engineer present for E-mark certification work, supporting carmakers' own specifications, and two capabilities have been pushed beyond the baseline standards: magnetic field immunity to ISO 11452-8 extended to 1,000 kHz where the standard itself reaches 400 kHz, and the ALSE method and portable transmitter immunity extended to 7.125 GHz with AWGN modulation added, which covers the Wi-Fi 6E band that newer connected vehicles must tolerate and that most automotive chambers cannot yet reach. Radiated emission measurement by the reverberation chamber method started in April 2026. Alongside automotive, it runs consumer EMI and EMS testing to product standards, EV and plug-in hybrid vehicle EMC requirements consultation, E-mark certification support, and product safety testing. Standards called out include CISPR 15 edition 9.1 for lighting equipment and IEC 61326-2-6 for in vitro diagnostic medical devices. Industries served are consumer electronics, multimedia, medical devices including IVD, industrial equipment, railway, automotive and in-vehicle electronics, and lighting. Specialisations are automotive EMC to OEM specifications, high-frequency magnetic field immunity, Wi-Fi 6E-band portable transmitter immunity, and reverberation chamber emission measurement.
Accreditations
| Accreditation |
|---|
| ISO/IEC 17025 |
| VCCI (Japan) |
| FCC Listed |
| iNARTE |
Testing Services
| Test Type | Applicable Standards |
|---|---|
| Radiated Emissions | CISPR 11, CISPR 14-1, CISPR 15, CISPR 32, CISPR 25, VCCI-CISPR 32, EN 55011, EN 55015, EN 55032, FCC Part 15B, IEC 61000-6-3, IEC 61000-6-4, IEC 61326-1, IEC 61326-2-6, EN 50121-3-2, UN-ECE R10 |
| Conducted Emissions | CISPR 11, CISPR 14-1, CISPR 15, CISPR 32, CISPR 25, VCCI-CISPR 32, EN 55011, EN 55015, EN 55032, FCC Part 15B, IEC 61000-6-3, IEC 61000-6-4, IEC 61326-1 |
| Radiated Immunity | IEC 61000-4-3, CISPR 35, CISPR 14-2, IEC 61547, IEC 61000-6-1, IEC 61000-6-2, ISO 11452-2, ISO 11452-9, IEC 61326-1, IEC 61326-2-6, UN-ECE R10 |
| Conducted Immunity | IEC 61000-4-6, CISPR 35, CISPR 14-2, IEC 61000-6-1, IEC 61000-6-2, ISO 11452-4, IEC 61326-1 |
| Radiated Susceptibility | ISO 11452-2, ISO 11452-8, ISO 11452-9, IEC 61000-4-3 |
| Conducted Susceptibility | ISO 7637-2, ISO 7637-3, ISO 11452-4, IEC 61000-4-6 |
| ESD | IEC 61000-4-2, ISO 10605 |
| EFT/Burst | IEC 61000-4-4 |
| Surge Immunity | IEC 61000-4-5 |
| Harmonics & Flicker | IEC 61000-3-2, JIS C 61000-3-2, IEC 61000-3-3 |
| Voltage Dips/Interrupts | IEC 61000-4-11, ISO 16750-2 |
| Power Frequency Magnetic Field | IEC 61000-4-8, ISO 11452-8 |
| Bulk Current Injection (BCI) | ISO 11452-4 |
| Pre-Compliance Testing | CISPR 25, CISPR 32, IEC 61000-4-3, ISO 11452-2, VCCI-CISPR 32 |
| Automotive Component EMC | CISPR 25, ISO 11452-2, ISO 11452-4, ISO 11452-8, ISO 11452-9, ISO 7637-2, ISO 10605, UN-ECE R10 |
| Automotive OEM Specifications | CISPR 25, ISO 11452 series, Vehicle manufacturer specifications |
| Radio Equipment Testing | ETSI EN 301 489-1, ETSI EN 301 489-17, ETSI EN 300 328, FCC Part 15.247, Japan Radio Act technical regulations |
| Medical Device EMC | IEC 60601-1-2, JIS T0601-1-2, IEC 61326-2-6, IEC 61326-1 |
| Railway EMC | EN 50121-3-2, EN 50121-4, IEC 62236-3-2 |
| Product Safety | IEC 62368-1, IEC 61010-1, IEC 60598-1, IEC 60335-1, Japan Electrical Appliance and Material Safety Act (PSE) |
Certifications / Marks
| Certification |
|---|
| VCCI (A-0163) |
| FCC (817278) |
| CE |
| UN-ECE E-mark |
| JAB RTL03100 accredited reports |
| PSE |
Industries Served
| Industry |
|---|
| Automotive |
| Consumer Electronics |
| Multimedia |
| Medical Devices |
| Industrial Equipment |
| Railway |
| Lighting Products |
| Radio & Wireless |
| Information Technology |
Major Equipment
| Equipment |
|---|
| Automotive (electrical) anechoic chamber with VCA engineer attendance for E-mark work |
| Consumer EMC anechoic chamber |
| Reverberation chamber for radiated emission measurement (from April 2026) |
| Magnetic field immunity system extended to 1,000 kHz (ISO 11452-8) |
| ALSE method and portable transmitter immunity extended to 7.125 GHz with AWGN modulation |
| EMI receiver |
| Spectrum analyser |
| LISN |
| CDN |
| BCI injection probes |
| ESD simulator |
| EFT/burst generator |
| Surge generator |
| Harmonics and flicker analyser |
| Automotive transient generator (ISO 7637-2 / -3) |
| RF power amplifiers and immunity antennas |
| Product safety test benches |
| Three iNARTE-certified EMC engineers |
