346 Keysight N9915-90020 User’s Guide
Electromagnetic Interference (EMI) Measurements – Option 361
Glossary (EMI)
6. Setting the EMI resolution bandwidth state for the displayed trace:
For this example, press
EMI Res BW > Manual (default = Auto). 120 kHz is
displayed, but you can set other fixed resolution bandwidths (i.e., 200 Hz,
9 kHz, and 1 MHz).
Learn more, see
“Resolution Bandwidth (Res BW)” on page 336.
7. Setting the Dwell Time:
For this example, press Sweep 3
> Dwell Time >100 ms (default).
Glossary (EMI)
This section provides a description of some of the terms used in the FieldFox’s
EMI mode.
Table 12-1 EMI Abbreviations and Descriptions
Abbreviation Description
APD Statistics Amplitude Probability Distribution Statistics – Evaluates pulses statistically. Measurement done in zero
span, at the specified center frequency, with a specific APD dB resolution bandwidth.
– CCDF Complementary Cumulative Density Function – The probability of the signal power being above a certain
level generated from the APD statistics’ histogram results.
– Histogram Results of the APD statistics measurement and the power levels detected over the APD specified dwell
time used to generate a CCDF results.
CISPR International Special Committee on Radio Interference
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