Archive for January, 2011

New BS EN 55024 2010 Edition released

Tuesday, January 25th, 2011

BS EN 55024 has just been released as the new 2010 edition.  The popular standard is titled “Information technology equipment. Immunity characteristics. Limits and methods of measurement.”  The date on the new edition is January 2011 and the document is available now from Document Center Inc.

The new BS EN 55024:2010  is the official English language edition of the EN 55024 and is identical to the CISPR 24, 2010 Edition.

It establishes uniform requirements for the electromagnetic immunity of information technology equipment. BS EN 55024 specifies applicable tests, test levels, product operating conditions and assessment criteria.  Test methods are then found in the referenced Basic EMC Immunity standards.

BS EN 55024 sets out the requirements to provide an adequate level of intrinsic immunity.  The goal is for the equipment to operate as intended in its environment.  The standard specifies the immunity test requirements for equipment defined in the scope in relation to continuous and transient, conducted and radiated disturbances, including electrostatic discharges (ESD).

Some tests are specified in defined frequency bands or at selected frequencies because of testing and performance assessment considerations.  Equipment which fulfils the requirements at these frequencies is deemed to fulfil the requirements in the entire frequency range from 0 Hz to 400 GHz for electromagnetic phenomena.

The test requirements are specified for each port considered.

This standard, and many more, are available from Document Cen5ter Inc. at www.document-center.com, or by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  Feel free to contact us with additional questions.

RTCA DO 160 New Revision G on Environmental Conditions and Test Procedures for Airborne Equipment

Monday, January 24th, 2011

The New Revision G for the widely used RTCA DO-160 on Environmental Conditions and Test Procedures for Airborne Equipment has just been released.  The document is available for purchase from Document Center Inc.

DO-160G provides standard procedures and environmental test criteria for testing airborne equipment for a wide range of aircraft, from light, general aviation planes and helicopters to “jumbo jets” and SST’s.

The standard covers tests for vibration, power input, radio frequency susceptibility, lightning and electrostatic discharge.   It has 26 sections and three appendices.  The new edition replaces RTCA-DO-160F and all other previous editions.  However, the obsolete revisions are available from Document Center Inc. if required.

As a measure of the wide acceptance of the document, it is coordinated with EUROCAE, with EUROCAE/ED-14G being identical to the  RTCA/DO-160G. And it is also adopted as the international standard ISO-7137.

You can get this document by going to the Document Center website at www.document-center.com.  Or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  We’ll be happy to provide you with copies of this and many other publicly distributed standards or answer any standards questions you may have.

IPC SM 840 New Revision E on Permanent Solder Mask just released

Friday, January 21st, 2011

IPC-SM-840, Revision E, on Qualification and Performance of Permanent Solder Mask has just been released and is available from Document Center Inc.

The new 19-page standard establishes the requirements for the evaluation of liquid and dry film solder mask material and for the determination of the acceptability of use on a standard printed board system.  It provides two classes of requirements, T and H, to reflect functional performance requirements and testing severity based on industry/end use requirements. Coverage is given to adhesion, material qualification, resistances to solvents, and electrical requirements.

The new Revision E incorporates requirements for flexible cover materials used as a flexible dielectric protective layer over etched conductors and other conductive features.

Copies of this popular IPC document and all IPC publications are available from Document Center Inc. at our website www.document-center.com.  You can also reach us by phone at 650-591-7600, fax at 650-591-7617, and via email at info@document-center.com.

We’ll be happy to assist you with any Standards needs you may have.