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keysight technologies N6141A & w6141a emi x-series measurement application technical overview
02 emi measurement application to avoid costly delays that can result from failed compliance testing, keysight's emi measurement application on x-series signal analyzers allows you to perform precompliance measurements and diagnostic evaluation of your designs. find and ix problems before they enter the test chamber with the N6141A measurement application on the n9030a pxa, n9020a mxa, or n9010a exa, or w6141a on the n9000a cxa for a low-cost pre- compliance test solution. the applications wide range of features enables you to: C use the scan table to set up frequency ranges, gains, bandwidths, and dwell time C scan a frequency range and display the results in log or linear format C identify suspect signals in the frequency scan C measure the peak, quasi-peak, emi-average or rms-average values of these suspect signals and place the results in the signal list C easily identify signals that fail the regulatory agency limit the emi measurement application is just one in a common library of more than 25 measurement applications in the keysight x-series, an evolutionary approach to signal analysis that spans instrumentation, measurements and software. the x-series analyzers, with upgradeable cpu, memory, disk drives, and i/o ports, enable you to keep your test assets current and extend instrument longevity. proven algorithms, 100% code-compatibility and a common ui across the x-series create a consistent measurement framework for signal analysis that ensures repeatable results and measurement integrity so you can leverage your test system software through all phases of product development. you can further extend your test assets by transporting applications across multiple x-series signal analyzers. key features C measure emissions with built-in commercialCand mil- stdCcompliant bandwidths, detectors, and band presets C compare measured emissions to regulatory limits C continuously monitor signals with bar meters to detect maximum amplitude C collect lists of suspect emissions C differentiate between ambient signals and device emissions C view signals over time to identify intermittent responses C generate reports in html format including signal list, images and trace, and correction data emi measurement application vs. option emi there are two emi options for x-series signal analyzers: option emc and the n/w6141a measurement application. option emc enables basic emc measurements. it contains cispr 16-1-1 compliant bandwidths and detectors (peak, quasi-peak, emi average, rms average) as well as cispr band presets (bands a through e), and mil-std bandwidths that meet mil-std 461d/e/f requirements. the emi measurement application includes option emc and provides a wide range of additional features that enable the user to perform precompliance conducted and radiated emissions tests to both commercial and mil-std requirements. the following table summarizes a comparison of features. table 1. comparison of emi measurement application and option emc featu res feature emi measurement application option emc cispr 16-1-1 detectors cispr 16-1-1 bandwidths mil-std 461 bandwidths log and linear display signal list scan table simultaneous detectors automatic limit testing measure at marker delta to limit strip chart step and swept scans report generation time domain scan 1 monitor spectrum 1 amplitude probability distribution (apd) 1 disturbance analyzer (click measurements) ui commonality with mxe receiver 1. requires options dp2 or b40. not available for cxa.
03 emi precompliance measurements over the past two decades, precompliance emissions measurements have been gaining in popularity. performing precompliance radiated and conducted emissions measurements early in the design cycle can reduce development expense and speed time to market by ensuring new designs will pass inal compliance testing at an accredited facility the irst time around, without costly redesign and re-testing. for a step-by-step guide on how to make precompliance measurements according to regulatory agency limits, refer to the application note, making conducted and radiated emissions measurements, literature number 5990-6152en. conducted emissions measurements the emi measurement application allows you to measure the emissions that are conducted along a power line. the transducer used to couple the emissions of the power line to the signal analyzer is a line impedance stabilization network (lisn). the frequency range of conducted emissions is 9 khz to 30 mhz depending on the regulatory agency. radiated emissions measurements performing precompliance radiated emissions measurements is not as straight forward as conducted emissions measurements. when measuring to commercial standards, the antenna is placed 3 to 10 meters from the device under test (dut) and the dut should be rotated in order to ind the maximum radiation. with the addition of the emi measurement application, the x-series signal analyzer becomes a powerful emi precompliance measurement analyzer. measure designs to the latest cispr 16-1-1 or mil-std requirements. the robust signal list feature enables you to quickly differentiate between the dut and the ambient signal environment. regulatory standards x-series signal analyzers with the emi measurement application can be used for making precompliance measurements to any international emc standard. simply select the performance level and frequency range for your application.
04 easily identify out-of-limit device emissions signal list, frequency scan, and active detector meters are displayed on a single screen for easy review of the measurement results. continuously scan a speciied frequency range or scan and search for signals above a margin or limit and place them in the signal list. use the simultaneous detector meters to continuously measure a selected signal while maximizing the amplitude. measure all the signals with the search and measure function using up to three detectors. choose between peak, quasi-peak, emi average, or rms average detectors. the measurement results are compared to regulatory agency limits in the delta to limit column. use the scan table to set up frequency ranges the emi measurement application includes a scan table with up to 10 ranges that can be set up for the speciic frequency ranges of interest. the scan table also includes resolution bandwidths selection, step sizes, points per rbw, attenuation selection, and preamp selection. use the cispr band presets to easily set a range in the scan table. figure 1. frequency scan figure 2. conducted emissions with delta to limit figure 3. scan table
05 tune and listen to signals in the frequency scan list testing in an open area test site means that you have to deal with signals in the ambient environment. to help distinguish between dut signals and signals in the ambient environment, you can use the tune and listen function to demodulate am, fm, or phase modulation. view signals over time using strip chart strip chart lets you view signals over a long time period to identify widely spaced discontinuities. limit lines can be placed on the display for regulatory agency comparison. generate a report of the test results develop a report in html format that includes screen image, signal list, correction factors, trace data, and limit lines along with test and product descriptions. figure 5. strip chart figure 6. report generation figure 4. radiated scan with meters
06 go faster with time domain scanning the emi measurement application offers three types of frequency scanning: swept, stepped, and time domain. 1 time domain scan decreases total test time by reducing overall prescan collection times when longer measurement dwell times are required. time domain scan speeds measurements by using high-overlap fast fourier transforms (ffts) to collect emissions data simultaneously over an acquisition bandwidth that is multiple resolution bandwidths wide. this is in contrast to frequency- domain measurements, which collect data in individual resolution bandwidths. with time domain testing, you can collect suspect lists rapidly, greatly improving overall test time and throughput. automate click measurements use the built-in disturbance analyzer to easily make discontinuous disturbance, or click, precompliance measurements as speciied in cispr 14-1. simplify and automate data collection, analysis, and report generation for these commonly tested emissions for more eficient testing. figure 7. comparison of resolution and fft acquisition bandwidths frequency amplitude fft acquisition bandwidth amplitude frequency receiver resolution bandwidth sw ept or stepped frequency domain scan time domain scan dwell for each resolution bandwidth dwell for each fft bandwidth (multiple resolution bandwidth) figure 8. simplify and automate data collection, analysis, and report g eneration for click measurements 1. requires options dp2 or b40. not available for cxa.
07 be ready for apd measurements the emi measurement application helps future-proof your lab by offering the amplitude probability distribution (apd) function that is being considered by cispr for emissions testing of microwave ovens. 1 to characterize slowly-varying emissions, the apd function displays the probability of an emission reaching or exceeding a given level. to facilitate use of this new function, the emi measurement application also offers speciic limit-line types that can be used with built-in evaluation capabilities to simplify dut testing. find the maximum with monitor spectrum to ensure that you have identiied the frequencies of maximum emissions in your suspect list, the emi measurement application offers a new feature called monitor spectrum. 1 this feature offers both live-spectrum and meter displays that make it easy to see emission levels and ind the maximum while adjusting the center frequency. ultimately, monitor spectrum improves overall measurement time by reducing the time it takes to prepare your signal list for inal measurements. figure 9. monitor spectrum identiies frequency of peak emissions figure 10. be ready for future applications with the apd function 1. requires options dp2 or b40. not available for cxa.
08 figure 12. trace zoom figure 11. spectrogram figure 13. zone span enhanced display package for x-series signal analyzers option edp gives you three more diagnostic tools to be used with your x-series signal analyzers. use the spectrogram to view signal traces over time to identify intermittent signals. the display colors can be changed to give better contrast between background and intermittent signals. the trace zoom and zone span give you a closer look at signals that appear in broad measurement span. build a complete test system qualiied keysight solution partners provide a single point of contact to purchase complete emi precompliance measurement solutions that meet commercial and mil-std speciications. these partners can provide equipment including probes, towers, and antennas, and services such as training and support. to further simplify testing, they also offer automation software that can meet your speciic needs.
09 software licensing and coniguration choose from two license types: C fixed, perpetual license: this allows you to run the application in the x-series analyzer in which it is initially installed. C transportable, perpetual license: this allows you to run the application in the x-series analyzer in which it is initially installed, plus it may be transferred from one x-series analyzer to another (pxa/mxa/ exa) and between cxa signal analyzers. ordering information N6141A emi measurement application model-option description notes N6141A-2fp fixed perpetual license for n9010a exa, n9020a mxa, and n9030a pxa signal analyzers N6141A-2tp transportable perpetual license for n9010a exa, n9020a mxa, and n9030a pxa signal analyzers w6141a emi measurement application for cxa model-option description notes w6141a-2fp fixed perpetual license for the n9000a cxa signal analyzer w6141a-2tp transportable perpetual license for the n9000a cxa signal analyzer try before you buy! free 30-day trials of x-series measurement applications provide unrestricted use of each applications features and functionality on y our x-series analyzer. redeem a trial license on-line today: www.keysight.com/ind/x-series_trial you can upgrade! options can be added after your initial purchase. most x-series options are license-key upgradeable. up grade
10 hardware conigurations n9030a pxa signal analyzer model-option description notes n9030a-503, -508, -513, -526, -543, -544, or -550 3.6, 8.4, 13.6, 26.5, 42.98, 44, or 50 ghz frequency range one required n9030a-p03, -p08, -p13, -p26, -p43, -p44, or -p50 preampliier, 3.6, 8.4, 13.6, 26.5, 42.98, 44, or 50 ghz one recommended n9030a-edp enhanced display package for use in the spectrum analyzer mode recommended n9030a-b40 40 mhz analysis bandwidth recommended n9030a-dp2 digital processor with 2 gb capture memory recommended n9020a mxa signal analyzer model-option description notes n9020a-503, -508, -513, or -526 3.6, 8.4, 13.6, or -526 ghz frequency range one required n9020a-p03, -p08, -p13, or -p26 preampliier, 3.6, 8.4, 13.6, or 26.5 ghz one recommended n9020a-edp enhanced display package for use in the spectrum analyzer mode recommended n9020a-b40 40 mhz analysis bandwidth recommended n9020a-dp2 digital processor with 2 gb capture memory recommended n9010a exa signal analyzer model-option description notes n9010a-503, -507, -513, or -526 3.6, 7.0, 13.6, or 26.5 ghz frequency rang e one required n9010a-p03, -p07 preampliier, 3.6, or 7.0 ghz recommended n9010a-edp enhanced display package for use in the spectrum analyzer mode recommended n9010a-b40 40 mhz analysis bandwidth recommended n9010a-dp2 digital processor with 2 gb capture memory recommended n9000a cxa signal analyzer model-option description notes n9000a-503, -507, -513, or -526 3.0, 7.5, 13.6, or 26.5 ghz frequency range one required n9000a-p03, -p07, -p13, or -p26 preampliier, 3.0, 7.5, 13.6, or 26.5 ghz one recommended n9000a-edp enhanced display package for use in the spectrum analyzer mode recommended
for more information on keysight technologies products, applications or services, please contact your local keysight office. the complete list is available at: www.keysight.com/find/contactus americas canada (877) 894 4414 brazil 55 11 3351 7010 mexico 001 800 254 2440 united states (800) 829 4444 asia paciic australia 1 800 629 485 china 800 810 0189 hong kong 800 938 693 india 1 800 112 929 japan 0120 (421) 345 korea 080 769 0800 malaysia 1 800 888 848 singapore 1 800 375 8100 taiwan 0800 047 866 other ap countries (65) 6375 8100 europe & middle east austria 0800 001122 belgium 0800 58580 finland 0800 523252 france 0805 980333 germany 0800 6270999 ireland 1800 832700 israel 1 809 343051 italy 800 599100 luxembourg +32 800 58580 netherlands 0800 0233200 russia 8800 5009286 spain 0800 000154 sweden 0200 882255 switzerland 0800 805353 opt. 1 (de)opt. 2 (fr) opt. 3 (it) united kingdom 0800 0260637 for other unlisted countries: www.keysight.com/find/contactus (bp-07-10-14) 11 | keysight | N6141A & w6141a emi x-series measurement application - technical overview this information is subject to change without notice. ? keysight technologies, 2012 - 2014 published in usa, august 2, 2014 5990-6035en www.keysight.com related literature N6141A & w6141a emi self-guided demonstration technical overview 5990-6158en making conducted and radiated measurements application note 5990-6152en related web product page www.keysight.com/ind/N6141A www.keysight.com/ind/w6141a x-series applications www.keysight.com/ind/x-series_apps x-series signal analyzers www.keysight.com/ind/x-series emi and emc applications www.keysight.com/ind/emc mykeysight www.keysight.com/find/mykeysighta personalized view into the information most relevant to you. www.lxistandard.org lan extensions for instruments puts the power of ethernet and the web inside your test systems. keysight is a founding member of the lxi consortium. keysight assurance plans www.keysight.com/find/assuranceplansup to five years of protection and no budgetary surprises to ensure your instruments are operating to specification so you can rely on accurate measurements. www.keysight.com/quality keysight technologies, inc.dekra certified iso 9001:2008 quality management system

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