Conformity Magazine - October 2007 - (Page 47)

Selection Criteria With a better understanding of how the spectrum analyzer is used for EMI testing, it’s now time to look more closely at the measurement instrument itself. But what features or characteristics must the spectrum analyzer have in order to ensure successful EMI testing? The answer to that question depends in part on whether the measurement instrument will be used for pre-compliance testing, full-compliance testing or both. which places stringent requirements on receiver dynamic range), MIL-STD and 10 percent step bandwidths. The DSP implemented detectors include peak, negative peak, sample, average and quasi peak. Peak and negative peak detectors are used to identify impulsive signals. To begin with though, it’s important to note that the architecture of today’s modern spectrum analyzers differ greatly from yesterday’s traditional spectrum analyzers (see Figure 7). Today’s spectrum analyzers use high-speed digitizers and digital signal processing (DSP) technology to gain speed, dynamic range and accuracy over legacy equipment. The DSP is used to set resolution bandwidths, video bandwidths and detectors. The engineer can choose from a wide range of resolution bandwidths 2140.ACS Ad6.875x4.875 Figure 7: PM Page 1 including CISPR (a standard 9/6/07 2:48 Modern spectrum analyzer block diagram from a leading compliance test lab? It’s not just a fairy tale anymore. Sure, Advanced Compliance Solutions has state-of-the-art facilities, and is accredited by both UL and TUVRheinland for unwitnessed testing. Not to mention that our experience is trusted by some of the world’s largest manufacturers. But more importantly, we truly care about your success. Great service 877.216.0192 | www.acstestlab.com Administrative & Engineering I.T.E. and Professional Audio/Video Lab Code 200612-0 Wireless Certifications | EMC Testing | Product Safety Testing | Environmental Testing | Global Regulatory Compliance october 2007 conformity 47 http://www.acstestlab.com http://www.acstestlab.com

Table of Contents Feed for the Digital Edition of Conformity Magazine - October 2007

Contents Editor’s Note Commission Proposes Changes for 57-64 GHz Spectrum Rules FCC Continues Actions Against Jamming Device Distributors Radio Operator Fined for Failing to Make Equipment Available for Inspection Commission Fines Unsolicited Fax Advertisers Firm Offering Quality Standards Training Also Fined Breaking New Ground with Lithium-Battery Generic Requirements for Use in Telecommunications Facilities ESD Open Forum EMC UK 2007 Conference Set Staying Abreast of U.S. E-Waste Legislation EU Commission Establishes RFID Expert Group Update on China's CCC Compliance Program System Level ESD Testing: The Waveforms An Alternative Approach to Surge Suppression Testing Equipment Buyer's Guide EU Scientific Committee Releases Updated Data on EMF Risks Updated Standards List For The EU’s EMC Directive Updated Standards List For The EU’s Directives on Measuring Instruments Call for Presentations for 2008 International ESD Workshop Announced CPSC Actions In The News IEC Standards Update Product Reviews UL Standards Update New Products From Our “You Can’t Make This Stuff Up” Department Looking Back: Items from Past Issues of Conformity Upcoming Events Advertisers

Conformity Magazine - October 2007

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