Magnetic and electric-field analyzers measure accurately regardless of signal type. (Product & Services).Narda Safety Test Solutions has introduced new isotropic Refers to properties that do not differ no matter which direction is measured. For example, an isotropic antenna radiates almost the same power in all directions. In practice, antennas cannot be 100% isotropic. analyzers for low-frequency magnetic and electrical fields. The analyzers, which produce fast, accurate measurements regardless of signal shape and complexity, can help ensure the safety of utility workers and private citizens in proximity to power lines or high-voltage equipment. The new Model EFA-200 and Model EFA-300 field analyzers, designed for use in industry, by insurers, and by health and safety professionals, employ an innovative shaped-time-domain (STD (Subscriber Trunk Dialing) Long distance dialing outside of the U.S. that does not require operator intervention. STD prefix codes are required and billing is based on call units, which are a fixed amount of money in the currency of that country. ) technology. The complex STD circuitry calculates and displays field strength levels as a percentage of an industry or government standard, irrespective of irrespective of prep. Without consideration of; regardless of. irrespective of preposition despite signal frequency and wave form, allowing for an immediate determination of safety or potential for harm. "The energy emitted by high-voltage utility lines and industrial equipment such as resistance welders can pose risks to personal safety," said Richard Strickland, director of business development for Narda STS (Synchronous Transport Signal) The electrical equivalent of the SONET optical signal. In SDH, the European counterpart of SONET, STS is known as STM (Synchronous Transport Module). . "Until now, there haven't been instruments that could perform the level of analysis needed to confirm, quickly and conclusively that a given environment complies with established standards for occupational or public safety". The EFA-200 and the EFA-300 both measure magnetic field strength. The EFA-300 includes a cube-shaped module for isotropic measurement of electrical field (E-field) strength. Its E-field module can be operated remotely from the base unit, so that field strength can be measured with little or no influence of a human body on the field being measured. Both models are designed to operate in a low-frequency range of 5 hertz to 32 kilohertz One thousand cycles per second. See Hertz. . If multiple-frequency signals are present, the analyzers can be optionally equipped to perform fast Fourier transform See FFT. (algorithm) Fast Fourier Transform - (FFT) An algorithm for computing the Fourier transform of a set of discrete data values. Given a finite set of data points, for example a periodic sampling taken from a real-world signal, the FFT expresses the data in terms of (FFT (Fast Fourier Transform) A class of algorithms used in digital signal processing that break down complex signals into elementary components. FFT - Fast Fourier Transform ) spectral analysis, in which all components, including harmonics, are evaluated simultaneously. The EFA-200 and the EFA-300 have built-in isotropic magnetic field probes, and both models also can be used with a large, optional, high-sensitivity probe for enhanced performance and measurement of dissimilar magnetic fields magnetic fields, n.pl the spaces in which magnetic forces are detectable; created by magnetostrictive ultrasonic scalers to cause the tips of instruments such as ultrasonic scalers to vibrate. . B-field analysis can be performed in hard-to-reach places with another optional probe, a miniature, 3-centimeter "sniffer" probe. Depending on the application, the analyzers can be set to operate in broadband mode, covering the entire spectrum from 5 Hz to 32 kHz. For a more detailed field analysis, or in environments with multi-frequency fields, band pass and band reject filters are available in the range of 15 Hz to 2 kHz. User-editable filter lists can also be configured. For convenience, the analyzers are designed to allow fast switching between common filter settings such as broadband and band pass. The backlit An LCD screen that has its own light source from the back of the screen, making the background brighter and characters appear sharper. LCD display provides graphed and numeric indication of field strength and visual confirmation of operational mode, bandwidth, and other parameters. Windows-based software allowing remote operation and the down-loading and analysis of data stored in the analyzer also is available. Circle #26 on Reader Service Card |
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