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Electromagnetic Interference (EMI) Measurements – Option 361
How to Set Up Electromagnetic Interference (EMI) Mode Settings
How to Set Up Electromagnetic Interference (EMI) Mode Settings
IMPORTANT! See also,
"SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE."
This section reviews the steps in setting up an example EMI measurement. If
you are not familiar with this process or would like more information, refer to
"Using EMI Measurements (Option 361)" on page
EMI Measurement Mode Setup Procedure
1. Selecting EMI Measurement mode:
2. Setting the EMI Measurement type:
3. Setting the CISPR Band:
4. Setting the EMI detectors for each trace:
The EMI Resolution bandwidth is auto-coupled to keep frequency range
with the selected CISPR band. If the Start or Stop frequencies are
changed, the FieldFox displays a reminder message about the CISPR band
limits.
Example of CISPR messages: "CISPR band StartFreq limited to
30000000" and "CISPR band StopFreq limited to 300000000".
5. Setting the Log Freq AxisX state for the displayed trace:
Keysight N9915-90020 User's Guide
"Alignments" on page
Press Mode >
More
(Depends on number of Options) >
For this example, press Measure 1 >
— The display updates to show three traces: PosPeak T1 (P),
QuasiPeak T2 (Q), and EmiAverageT3 (A). Learn more, see
(International Special Committee on Radio Interference) Control" on
page
331.
For CISPR Band Scan, these traces become active and begin sweeping.
Optional: for this example, press
EmiAverage T3
to enable/disable each detector/trace. (default = all on.)
Learn more, see
"How to set the EMI Traces" on page
For this example, press
Learn more, see
"How to set a CISPR Band" on page
For this example, press
OFF to change display to linear view.
Learn more, see
"How to set Frequency Range and Frequency Context" on
page
329.
206, in SA mode,
Measurement
PosPeak
T1,
CISPR Band
C 30 – 300 MHz
>
Log Freq AxisX
ON
(default). Optional: Press to
>
Chapter 9,
327.
EMI Measurements
CISPR Band Scan
>
"CISPR
QuasiPeak
T2, or
339.
(default).
333.
345
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