I. Rate is rapidder, insight is stronger, more intelligence

 

R&S ESR (consult graph 1) it is frequency limits disturb test receiver to the electromagnetism of 7 GHz from 10 Hz. It basically is used at according with relevant commerce electromagnetism the product certification of compatible standard is measured. Adopt the front of preamplifier of compositive preelection, 20 DB and high linear, r&S®ESR satisfies requirement of CISPR 16-1-1 standard, also accord with requirement of level of all and other relevant business. And those who make this instrument truly outstanding is the time domain scanning that it is based on FFT, its speed with never been achieve up to now measures electromagnetism interference. The interference that needed a few hours in the past is measured can finish inside a few seconds now.

 

Graph 1: R&S ESR EMI checks receiver to use the time domain scanning that is based on FFT to carry out the interference that accords with a standard to measure, 6000 times faster than receiver of traditional EMI test.

 

Have the spectrum of optional real time that diagnoses a tool extensively to analyse a function, make this instrument can analyse interference signal and its history with new view. Besides offerring EMC to try a function, r&S ESR or the powerful complete function signal that for the lab application prepares one and spectrum analyzer. This instrument structure is clear, use intuitionistic feeling screen interface, very maneuverable below any mode.

 

II. Time domain scans – super- fast, accord with standard measurement

 

In time domain scanning mode falls, the measurement of R&S ESR speed enters what mode of type frequency scanning falls to measure speed tower above than traditional pace 6000 times, it is the fastest EMI test receiver on the market. R&S ESR can be finished inside a few millisecond in each CISPR frequency paragraph frequency scanning. It measures conducted interference in real time, include to allow peak value to increase advantageous position, frequency of perforative without any time aperture ground whole CISPR paragraph B, arrive from 150 KHz namely 30 MHz (consult graph 2) .

 

Graph 2: Real time time domain scans, use peace of exact peak value to all add authority to measure interference voltage, adscititious contain through / the bounds that failure indicates is worth line examination.

 

Graph 3: Typical EMI measures a setting, use a pace to scan and use time domain into type frequency scanning is overall the comparison that measures time.

 

This kind of application needs to preview scanning no longer, measure precision in order to accord with the n of CISPR 16-1-1 because of R&S ESR, use exact peak value to add authority to get wanted spectrum, what need time not to exceed 2 seconds (consult graph 3) .

 

Can save the valuable time that the user spends to get a result so. When the facility that should want a test can be operated inside short time only or be being measured (for example the starting electromotor in car) , function of time domain scanning is particularly useful. Splitting time domain scanning can get a result quickly, can handle this kind of case easily thereby. Save the time below to be able to be used at increasing viewing time for example from this, so that detect reliably,pulse repeats frequency low-down tape, intermittence to disturb signal, perhaps detect isolated pulse. Through increasing viewing time, even if is the interference of fluctuant interference or drift, its are highest n also can detect, and won’t make overall measure time incontinent lengthen.

 

III. Analysis of real time spectrum disturbs signal to offer new view to have an insight into

 

R&S ESR checks the EMI that accords with a standard receiver function and union of function of analyzer of real time spectrum to be together, offer traditional EMI to try the analytic ability that receiver has no. If equipment checks failure during attestation test, can switch disturbs signal to analysis of real time mode. This kind of method special conduce to survey abiogenesis incident and brief event, the tape interference drift on frequency or the equipment that be measured operates the spectrum character when in switch. The instrument that uses traditional frequency tuning is the frequency range that measures opposite tape with ordinal means. If do not have detailed knowledge to be measured beforehand,the radiate of equipment launchs action, the weaveform of not stable signal of these types still may be not detected by traditional analyzer, although can detect,mix the analysis also is very time-consuming. The measurement of R&S ESR spectrum is as high as 40 MHz, without any time aperture, accordingly even if very short pulse also can be caught.

 

R&S ESR provides function of spectrum fall plan, can offer in time domain without seam spectrum to show, allow an user to be able to analyse the act that violates signal to change along with time. Every spectrum expresses to be those who have different n is horizontal, different n allocates different color. Corresponding the time resolution at 100μs, each spectral line in order to be as high as every second 10, the rate of 000 lines is joined continuously. Spectrum fall plan announced to see the signal feature that be less than in spectrum. R&S ESR still has frequency pattern plate to spark (FMT) function, can detect appoint the abiogenesis incident inside spectrum. Test receiver measures every alone spectrum, undertake the pattern plate related its and frequency comparative. If a spectrum touched pattern plate, r&S ESR sparks activation and show that spectrum, make the user can analyse this interference to reach its to affect thereby.

 

Cannot see below traditional analyzer mode when individual interference signal, below twilight mode it will be shown instantly. Use this kind of pattern, r&S ESR will be written into single plan without the chart that seam frequency. Every color that resembles element points out the frequent degree that specific on specific frequency amplitude appears. If signal is in specific frequency place to appear with specific amplitude no longer, the corresponding twilight time that defines in the user like element disappears after cycle. From this, twilight mode built spectrum histogram. The pulse that the user can be clear about area departure to appear inside very short time only interference and successive interference. Although different pulse interference is distinguished easily. In addition, twilight mode can identify go out to be disturbed by the tape of broadband interference overlay (consult graph 4 with the graph 5) .

 

IV. Use at showing the intermediate frequency of spectrum analyses a function all round interference signal

 

Optional R&S ESR intermediate frequency analyses a function to offer EMI to receive the spectrum that radio frequency inputs signal all round frequency to show. Intermediate frequency spectrum shows but coupling shows to the histogram that receives frequency currently. Or, can scan intermediate frequency spectrum and saved frequency the result shows together. It is OK to receive frequency coupling arrives the position of mark, during frequency scans this mark is placed to be on the EMI signal peak value that detects (mark dogs function) .

 

Graph 4: Below analyzer mode indication broadband is disturbed – in this exemple, the electric machinery that checks difference by EMI is caused. Maize contrail represents current spectrum, blue contrail expresses Max. Hold.

 

Graph 5: The interference spectrum of one electric machinery is the same as below twilight mode. Here, the 2nd pulse interference is clear and visible, and cannot identify below analyzer mode give it, because it is concealed in broadband interference.

 

This is the simple method of highest peak in be close to and evaluating spectrum (consult graph 6) . Intermediate frequency spectrum earlies childhood to be measured for concerning what spectrum takes up all round channel is detailed be seen without exception and already the spectrum of modulation signal distributings information. The signal that any receiving can classify the signal that be interference signal or wants quickly. The vision of spectrum is evaluated conduce to the frequency that receiver accurate tuning requires to place. Can activation at the same time AM or FM frequency demodulation, identify the signal that detects more easily thereby, measure medium environmental interference to identify and eliminate to open area for example.

 

Graph 6: Coupling scans to frequency (next screen) intermediate frequency spectrum (on screen) show. The central frequency that the actual number position on scanning contrail decides to receive frequency and intermediate frequency spectrum (mark dogs function) .

 

V. Need to press the automation of pushbutton checks alignment only

 

The standard method that executive interference measures is preview those who use peak value and average to increase advantageous position quickly measure measure photograph union finally what add authority to undertake with the radiodetector that adopts CISPR requirement on critical frequency. To this kind of method, r&S ESR offerred what define in commercial level to write the option that is restricted to be worth a line beforehand, use at product radiate to measure. Will be restricted to be worth line and preview measure a result to compare, these results present frequency scanning to obtain with traditional pace, or with extremely high rate, use scanning of optional fast time domain to obtain. Next, the standard that test receiver defines according to the user identifies critical frequency, use form (peak value list) undertake appearing. Automatic test alignment can be configured quickly on feeling screen, easily (consult graph 7) , and press pushbutton can be carried out.

 

To electric power on-line interference voltage is measured, r&S ESR can control Lord and Shiwaci through its AUX port the circuit impedance of the company stabilizes a network (LISN) . The measurement of all look line can be carried out completely automatically. This ensured highest interference n can be detected reliably.

 

VI. The spectrum analyzer that accords with a standard – use at surmounting EMI to measure

 

R&S ESR included the R&S FSV signal with powerful function and spectrum analyzer. Combined EMI to check the function of receiver and spectrum analyzer, it makes the instrument that can provide a variety of capability. Above all, r&S ESR is carried out diagnose quickly measure, the EMI that so that be in,different development phase decides and analyses a product is characteristic – can be used or do not use preselector. The 2nd, r&S ESR can be used at a large number of standards are being carried out to measure inside lab of radio frequency development. Additional measurement function, for example adjacent path power (ACP) , 3 rank cut off (TOI) with occupied bandwidth (OBW) , and statistical function (APD, CCDF) , the application of this instrument limits expands Yuan Chao gives EMI to measure a category.

 

Graph 7: R&S ESR allows an user to deploy automatic test array quickly, easily (preview measure / data is compact / measure finally) , press pushbutton can be carried out. Measure finally also can undertake interactively.

 

To the electromagnetism below spectrum analyzer mode interference is measured, r&S ESR is offerred reach 16 mark, they can place the critical frequency that disturbing spectrum to go up. These number can close suitably with CISPR detector, thereby can with relevant be restricted to be worth a line to compare. Spectrum also can show along logarithm frequency axis. The n that measures on critical frequency lists with form form (consult graph 8) .

 

VII. Touch screen: Unapproachable relaxed operation

 

R&S ESR provides outstanding function not only, be operated easily and clear structured user interface also adds cent for its many. All sorts of measurement mode is apparently apart, press pushbutton can switch operates mode. The user can deploy complex measurement and automatic test array easily on feeling screen directly. R&S EMC32 software can be used at controlling R&S ESR remotely, and its compositive survey a system to the complex EMC that is used at automation to test a program in.

 

Graph 8: Frequency is used to scan below analyzer mode (the biggest 200, at 1 o’clock) the interference spectrum that undertakes with logarithm scale is previewed measure, and radiodetector mixes the CISPR of use requirement to be measured finally what be restricted to be worth a line to check.

 

VIII. Conclusion: EMI checks a of receiver function new dimension

 

New-style R&S ESR is measuring career respect not only, and ability respect is diagnosed in its (its open up the application with general height) the EMI with all and existing excel checks receiver. R&S ESR can carry out the attestation that accords with EN/ CISPR/FCC standard easily to measure (conduct and radiation) , and the EMI analysis in the process is developed in equipment of electric home appliances<gj, multimedia, lighting equipment, industry or equipment of medical treatment application. In automobile industry, r&S ESR is the good choice of the car that accords with requirement of car manufacturer guideline and fittings attestation test, have the aid of it also suits its optional direct current source shift measures application.