ECRI has published their article August 2008, Volume 20, No. 8, of which can be downloaded from www.awarepoint.com. While this article is good high level it is felt it may not delve into what actually is the criteria for measuring EMI and how to actually establish the appropriate policies and procedures within a healthcare environment. Arthur Gasch from www.medsp.com, has allowed Steve Olsen sgolsenco@yahoo.com, and myself to provide input to an article in his publication and circulation of over 10,000 members in his client base. This will come out in the next few weeks. An excerpt of this article. " IEC standards IEC 60601-1-2 is the most common standard for RF susceptibility. The standards for compliant signal levels are clear and represent a good starting point for for basic safety and essential performance. The requirement states that a field strength of 10V/m (volts per meter), is the accepted standard for life critical equipment and that 3 V/m is the accepted standard for general purpose medical devices. A convenient standard to assist in calculating radiatied emissions is FCC OET Bulletin 65, "Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields. The formulas are based on standard RF field theory. We have included a table in this extensive article that outlines acceptable separation from the radiating source to RF subseceptable equipment in free space."
