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RSAxxx(N) EMI Mode – Getting Started

RIGOL Technologies CO., LTD. 09.09.2021

RSAxxx(N) EMI Mode – Getting Started

Introduction:

In this description you will find first steps of operation how to work with EMI Mode in RIGOL’s RSA Series

and how to adjust different settings. The target should be, to understand the principle of this mode for

pre-compliance analysis and perform easily adequate settings from the beginning.

The principle of EMI mode is, to make a pre-compliance analysis (conducted or radiated emission) and safe

test time for that evaluation. In case a whole trace would be recorded with a valued detector (like quasi

peak) the test time would be quite long. This EMI mode can do a fast scan of the trace with e.g. [Average]

or [Peak] detector and search all peaks. With that peaks, the measurement of valued detectors (QP and/or

CISPR AV) can be done and the result is available within minutes.

But saving test time is only one part. Failure debugging and design improvement is a second step. With

the integrated measurement meter, customer can do a live debugging and can do an immediate

improvement of each unwanted single peak. Last but not least, the mode allows you to generate a test

report for your documentation. This mode contents a lot of features, for correction, pass / fail testing, and

much more.

Default Window, EMI – Mode:

Activate the EMI Mode and see the window of figure 1.

The default mode is set to CISPR filter (6 dB filter). In case that for some evaluation 3 dB filter are required,

please change this here: Please select [Mode Setup]  [EMC Standard]: “None”.

RSA Series: RSA5032N, RSA5065N, RSA5032(-TG), RSA5065(-TG), RSA3015N, RSA3030N, RSA3045N, RSA3030(-

TG), RSA3045(-TG), RSA3015E(-TG), RSA3030E(-TG)

Summary of content (10 pages)

PAGE 1
RSAxxx(N) EMI Mode – Getting Started RSAxxx(N) EMI Mode – Getting Started Introduction: In this description you will find first steps of operation how to work with EMI Mode in RIGOL’s RSA Series1 and how to adjust different settings. The target should be, to understand the principle of this mode for pre-compliance analysis and perform easily adequate settings from the beginning.
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RSAxxx(N) EMI Mode – Getting Started Window for the trace(es) Window for the meter(s) Window for the measurement results Figure 1: Default Window of EMI Mode Trace Settings: For adjustment of different parameter, please select the button [Meas Setup]. A new side window is now opening with different menus (see figure 2). Figure 2: [Meas Setup] Window on right hand side RIGOL Technologies CO., LTD. 09.09.
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RSAxxx(N) EMI Mode – Getting Started In this menu, the main settings of test setup can be realized. The first setting will be focus to the adjustment of frequency range according to the measured standard. This will be realized in [Scan Table] (see figure 3). Here you can select the required frequency range.      Up to 10 ranges are displayed. Each range will use max. 10.000 test points. If more measurement points are required (e.g.
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RSAxxx(N) EMI Mode – Getting Started Note 1: Please be carefully with dynamic range settings. Please set attenuator to the maximum value and turn off pre-amp in case you don’t know the signal level to avoid to destroy the spectrum analyzer. If you are unsure about the interference level, please use additionally an external attenuator for the first test.
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RSAxxx(N) EMI Mode – Getting Started   In case trace was measured and the peaks were already listed in the [Signal Table], and you want to start the final scan with measuring the valued detectors at these peaks only, please select [(Re)measure]. You can combine all of them. For example: if you want to do all together, please select [Scan-SrchMs] (see figure 4) Measurement Procedure of [Signal Table]:  In [Meas Setup]  [(Re)measure] you can decide if all peaks or specific peaks will be measured.
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RSAxxx(N) EMI Mode – Getting Started  In [Edit Limit] you can create your own limit line or you can modify the pre-loaded one according to your need (e.g. use a margin for pass / fail test) (see figure 5) Figure 5: [Edit limit] for creation or modification of own limit line or add margin for pass / fail test Activation of Measurement Meter: The measurement meter is a very good tool for debugging peaks with different detectors. Max three meter can be activated in parallel.
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RSAxxx(N) EMI Mode – Getting Started Figure 6: Adjustment of measurement meter with different detectors and coupled to signal Dynamic Range of Measurement Meter:  As mentioned before, the dynamic range of measurement meter can’t be adjusted in [Scan Sequence] settings because different ranges could be used with different dynamic range settings Figure 7: Set dynamic range of measurement meter and the reference level of the test in [AMPT] RIGOL Technologies CO., LTD. 09.09.
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RSAxxx(N) EMI Mode – Getting Started  Therefore you must select separately the dynamic range of the measurement meter as follow: Please select [AMPT] and adjust attenuator and pre-amplifier / reference level according to your need (see figure 7). Correction: In case you using external components like attenuators, amplifiers, cable, LISN, etc. you can add a correction which will be take into account into the result of trace, measurement meter and signal table.
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RSAxxx(N) EMI Mode – Getting Started   You can also select the number of peak you want to mark In case the measurement meter are coupled to the signal, then the meter jump to the selected peak and measure it (see figure 8). Generate a Test Report for Documentation:  The EMI Mode has the possibility to store the *.
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RSAxxx(N) EMI Mode – Getting Started Window Adjustments:   For some tests its important to see the whole trace without meter on the screen. You can realize this with selecting [System]  [Display]  [Meters Display]: Off (see figure 10). In case you need to display the measurement in horizontal linear axis instead of logarithmic view, then you can change this here: [Freq]  [Scalar Type]: “Lin” Figure 10: Display modification for bigger trace visibility RIGOL Technologies Europe GmbH Carl-Benz-Str.