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What are the differences between the Impulse Noise Testing (INS series) and Electrical Fast Transient/Burst (EFT/B) testing (FNS series), which is most widely used in electronics industry?

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The below table shows the major (important) differences between the two:

PARAMETERINS (IMPULSE NOISES)FNS(EFT/B NOISE)
Output waveformRectangular (square)Triangular
Rise timesLess than 1ns5ns
The pulse width50ns-1000ns50ns
Output voltagesMax. 4000V Max. 4800V
Repetition frequencyMax 100Hz *4Max 2MHz *5
Frequency componentsIncluding high frequency more than 1GHz 400MHz or less
Test mode (To power lines)Common mode / Normal mode Only common mode
Test mode (To signal lines)Capacitive coupling / magnetic field couplingCapacitive coupling
Conforming Standard or Guild lineNECA TR-28
JEM-TR177
JEC 0103_2005
Individual industry standards or private standards
IEC61000-4-4
JIS C 61000-4-4
Individual industry standards or private standards
UsersMainly Japanese and other Asian countries Worldwide

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