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Overview EMI Automotive Band Evaluation 

 

 

01.00

 

Rohde & Schwarz

 EMI Automotive Band Evaluation with R&S©EMC32-K51 

– 1SP07- 

4

 

1

 

Overview EMI Automotive Band Evaluation 

EMI Automotive is the solution for a special measurement task. EMI disturbance 
signals generated from car components have to be measured with on-board 
communication antennas in their frequency bands. The frequency bands as well as the 
bandwidth of the antennas may overlap in the frequency domain. This short description 
shows why the task is not solvable by a standard EMI Scan, EMI Sweep or EMI Auto 
Test template. 
Sequenced definition of frequency sub ranges in hardware setups and Scan/Sweep 
templates cannot overlap. This task is EMC32 Sequencer related. 
EMI Automotive Band Evaluation Test Template now is optimized to generate the 
particular kind of test demanded by the standards with extreme flexibility in 
configuration of the test and the related test report without usage of the EMC32 
Sequencer. 
EMI Automotive Band Evaluation Test Template 

 

defines sub ranges correspondent to the Band related frequency definition and 

 

uses the appropriate antenna specified for this Band per sub range in a 
dedicates hardware setup called Test Setup; 

 

includes a simplified data reduction from auto test to find maxima, and 

 

extends the report to show a separate graphic for each sub range. 

The extension 

“EMI Automotive Band Evaluation” or short “EMI Automotive” therefore 

matches two different demands: 

 

it is closely related to automotive and avionic needs, and 

 

it is a kind of sequencer for EMI Tests. 

The standard applications are on-board EMI measurement sequences in broadband 
and communications frequency bands for automotive and aerospace applications. 

1.1  Test Method 

The tests are intended to provide protection for receivers installed in a vehicle from 
disturbances produced by components/modules in the same vehicle.  
The receiver types to be protected are, for example, broadcast receivers (sound and 
television), land mobile radio, radio telephone, amateur, citizens' radio, Satellite 
Navigation (GPS, etc.) and Bluetooth. The test method is described in CISPR 25 in 
chapter 5: 

“Measurement of emissions received by an antenna on the same vehicle”. 

EMI Automotive Test is based on devices in the Device List and an EMI Automotive 
Test Template. To achieve a maximum in flexibility the test template editor allows all 
kinds of settings and changings which in all other tests are subject to the Hardware-
Setup. EMI Automotive test template works comparable to a test sequence, so it is 
possible to do sub ranges with overlapping frequency ranges. 

1.2  Standards related to EMI Band Evaluation 

CISPR 25: 

“Vehicles, boats and internal combustion engines – Radio disturbance 

characteristics 

– Limits and methods of measurement for the protection of on-board 

receivers

”; Edition 3.0 2008-03. CISPR 25 describes the test method and gives a set of 

limit lines. 

Содержание EMC32

Страница 1: ...nsion is an on board EMI measurement sequence in broadband and communications frequency bands for automotive and aerospace applications This application notes shows how to configure run and automatica...

Страница 2: ...he template editor 12 2 2 2 2 The middle part of the template editor 14 2 2 2 3 The lower part of the template editor 14 3 Configuration of Test Cases in the Editor 15 3 1 Function of the mouse button...

Страница 3: ...Table of Contents 01 00 Rohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 3 8 Ordering Information 43...

Страница 4: ...e The extension EMI Automotive Band Evaluation or short EMI Automotive therefore matches two different demands it is closely related to automotive and avionic needs and it is a kind of sequencer for E...

Страница 5: ...tion of EMI Automotive Band Evaluation Test The above referenced standards define several test methods to prove EMC to be compliant with the standards Conducted emissions from components modules Volta...

Страница 6: ...aid we will concentrate on radiated test Figure 3 Hardware Setup for conducted EMI Automotive test Figure 4 Hardware Setup for radiated EMI Automotive test 2 1 Populating the Device List Radiated EMI...

Страница 7: ...d It depends on the switch unit whether the user can edit the paths directly or he has to import them like OSP After that we can use them in the hardware setup placed behind the tab Test Setup of the...

Страница 8: ...ditor via the EMC32 file explorer i e System Folder Test Templates EMI Automotive Figure 7 A mouse click on an existing file open the template editor with this EMI Automotive Test Template Or create a...

Страница 9: ...S EMC32 K51 1SP07 9 Figure 8 Two possibilities to create a new empty test template 3 Creating template from the main Menu Tool Bar Creating template from the main Toolbar Figure 9 Generation a new te...

Страница 10: ...Configuration of EMI Automotive Band Evaluation Test 01 00 Rohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 10 Figure 10 EMI Automotive conducted Test Template Editor...

Страница 11: ...Configuration of EMI Automotive Band Evaluation Test 01 00 Rohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 11 Figure 11 EMI Automotive radiated Test Template Editor...

Страница 12: ...requency range that means for all defined sub ranges are done This part consists of two tabs General Settings and Report Figure 13 General settings for all sub ranges listed in the middle part In the...

Страница 13: ...ferencing the frequency list In this mode the frequency steps are not defined by the receiver device like a scan mode but by an additional frequency list that is not referenced in the template itself...

Страница 14: ...selected active sub range in the sub range list can be changed in the lower part of the editor Figure 15 The pop up menu and the two buttons allow basic changes 2 2 2 3 The lower part of the template...

Страница 15: ...device icon opens a selection of all available devices The currently selected device is marked with a tick A left click when the mouse pointer shows a hand symbol on the icon opens an editor window w...

Страница 16: ...he Editor 01 00 Rohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 16 Figure 16 Mouse functions in the editor 3 2 Setting in Test Setup tab Figure 17 shows the Test Setup tab with s...

Страница 17: ...nerated after choosing both a transducer and a receiver by right clicks of the mouse Alternatively an existing signal path may be selected Left click The properties editor of the SignalPath pops up Fi...

Страница 18: ...Cases in the Editor 01 00 Rohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 18 Figure 18 Three dialogs to define the antenna s Dialog defining the switched signal path from test re...

Страница 19: ...ion of Test Cases in the Editor 01 00 Rohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 19 Figure 19 Dialog to define the signal path Figure 20 Receiver settings according to the c...

Страница 20: ...ency Properties Subrange Name Individual name can be defined here for the subrange or band Enabled Checked Measurement defined in this subrange will be carried out during test run Unchecked Measuremen...

Страница 21: ...in the receiver settings tab Time Bandwidth Figure 22 allows extremely shorted test durations Figure 22 Switching the Test Receiver to Time Domain Scan TD Scan FFT Mode use ScanFast as Scan Mode 3 4...

Страница 22: ...tional limit lines which shall be displayed only for each of the two detectors For each limit line optionally an offset may be applied thus the copy of the limit line added to the appropriate EMI test...

Страница 23: ...ceptance analysis you can optionally select for each detector a limit line tab Graphics Figure 23 Each limit line may be optionally shifted by the defined Offset value thus EMC32 will add the offset v...

Страница 24: ...ose the editor and save the template Figure 27 Last Step is to save the ready for testing template When all sub ranges are filled with correct parameters we can save the EMI Automotive Test Template b...

Страница 25: ...ibilities to start a new test directly or via the new test editor The New Test Editor gives additional freedom to change parameters of the Test Template for one test Figure 30 Any setting regarding re...

Страница 26: ...t a new test via the Tool Bar To run the test we have to switch to Measurement mode 4 1 Measurement Mode The measurement mode is used for performing test runs and acquiring measurement data After sele...

Страница 27: ...in analysis mode will be hidden Both explorers can be faded in when placing the mouse cursor on one of the explorers tear off buttons When the cursor is removed the explorer will be faded out once aga...

Страница 28: ...measured frequency bands are shown in the tree view style and can be shown easily by clicking on the appropriate tab In the lower graphics area the currently measured band is shown Further mode there...

Страница 29: ...ith R S EMC32 K51 1SP07 29 Figure 36 Each individual Band Subrange is represented by one graphics visible after a click on the tab Figure 37 Configuration of the graphics display all shown Horizontal...

Страница 30: ...the bottom of the main window It contains buttons which look like the ones of a video player Different functions can be performed with the help of these buttons e g test can be started or stopped etc...

Страница 31: ...s 60kHz then the next frequency will be 120kHz and so on After defining the frequency in the test template and after executing the test the start frequency will jump to next frequency automatically as...

Страница 32: ...cy Switching to the single measurement in only possible while the test is stopped Calculate Limit and Margin By clicking this button a dialog window will be opened This dialog window provides all nece...

Страница 33: ...he limit line will be calculated and a new table will be created with margin result The destination file Output File can be used again as an input file select From this test as the result type if limi...

Страница 34: ...By clicking this button the test will Exit the measurement mode Store a Single Measurement Result By clicking this button the measurement will be saved recorded at the selected frequency Another freq...

Страница 35: ...limit line 1 and detector 1 if data reduction is enabled Sub range name _DR_D2 This table contains the result of the Data Reduction acc to limit line 2 and detector 2 if data reduction is enabled Resu...

Страница 36: ...00 Rohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 36 Figure 42 In the Test Component tab of the EMC32 Explorer we start the Report Generator with an empty Report Figure 43 The...

Страница 37: ...ohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 37 Figure 44 The left side allows to select components out of the available components and to edit their properties Figure 45 Prope...

Страница 38: ...rts 01 00 Rohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 38 Figure 46 The properties allow selecting single graphics as well as all graphics by click on upper button Figure 47 S...

Страница 39: ...00 Rohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 39 Figure 48 Properties of tables Figure 49 One mouse click on refresh generates a preview of the report setup Figure 50 Previe...

Страница 40: ...Creating Reports 01 00 Rohde Schwarz EMI Automotive Band Evaluation with R S EMC32 K51 1SP07 40 Figure 51 Publishing the report...

Страница 41: ...EMC Requirements OEM harmonized Edition V1 01 2009 04 07 The test described in EN55025 2008 Ed 3 CISPR 25 2008 Ed 3 Both EMI Automotive template editors radiated and conducted implement devices the s...

Страница 42: ...nt Mode on New tests is unchecked the tool Bar allows to leave Measurement Mode 2 Switched to Measurement Mode Manually on execution of the Test The test will be started in the analysis mode and will...

Страница 43: ...checked the tool Bar allows to enter Measurement Mode 8 Ordering Information Index A automotive and aerospace applications 4 E EMC32 EMC32 EB 41 EMC32 K51 41 EMC32 Version 9 xx 41 S standard applicati...

Страница 44: ...sustainability ISO 14001 certified environmental management system Regional contact USA Canada USA 1 888 TEST RSA 1 888 837 8772 from outside USA 1 410 910 7800 CustomerSupport rohde schwarz com East...

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