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?
NoiseKenThe below table shows the major (important) differences between the two:
| PARAMETER | INS (IMPULSE NOISES) | FNS(EFT/B NOISE) |
| Output waveform | Rectangular (square) | Triangular |
| Rise times | Less than 1ns | 5ns |
| The pulse width | 50ns-1000ns | 50ns |
| Output voltages | Max. 4000V | Max. 4800V |
| Repetition frequency | Max 100Hz *4 | Max 2MHz *5 |
| Frequency components | Including 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 coupling | Capacitive coupling |
| Conforming Standard or Guild line | NECA 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 |
| Users | Mainly Japanese and other Asian countries | Worldwide |
