by Wayne Fisher, EMC Lab Manager, NTS Silicon ValleyManufacturers of Information Technology Equipment (ITE) intended for sale in Taiwan should take note that as of October 1, 2010 EMC testing requirements under emissions standard CNS 13438 have changed.The Bureau of Standards, Metrology and Inspection (BSMI) requires radiated emissions both from 30MHz to 1GHz and conditions requiring testing upwards of 6GHz. Additionally, conducted emissions on telecommunication ports are required on all networking ports (IE: Ethernet).The radiated emissions above 1GHz requirements are based on Amendment 1:2005 of CISPR 22:2005, which means testing is performed in a free space facility.
The Conducted Emissions on Telecommunication Ports requirements are the same as those in CISPR 22 with multi-speed ports operating at their highest data rate. Where there are many electrically identical telecommunication ports, multiple pre-scans may be required to determine the ‘worst case’ port for final evaluation.The testing is performed with the device under test operating from line voltages consistent with Taiwan. For Class A devices, testing must be performed at both 110VAC and 220VAC or 230VAC, 60Hz. For Class B devices, testing need only be performed at 110VAC, 60Hz.Products that were approved prior to October 1, 2010 will be accepted into the Taiwan market until their certificate is subject to renewal or if changes have been made to a product that needs re-certification after that date. At that point in time, products will need to demonstrate compliance with the new requirements.New rules currently under draft may be implemented this year have indicated that all approvals must adhere to RoHS rules otherwise certificates will expire at the end of this year. Evidence of RoHS certification for the EU will be accepted by Taiwan towards this requirement.Contact us at sales@nts.com or call 800-270-2516 to know more about the steps you need to take to ensure compliance of your ITE products with the requirements of Taiwan.