Ed, This may be what you are looking for: This is from SAE ARP5412, "Aircraft Lightning and Related Test Waveforms"
Table 5 - Individual Conductors test level due to Current Component A, lists waveform 4, level 4 as Vo=750 Io=150 Table 6 - Cable Bundle test level due to Current Component A, lists waveform 4, level 4 as Vo=750 Io=1500 The units are volts and amps, respectively. In Table 9, The waveshape is defined as 1.094*Vo(exp(-beta*t)-e(-alpha*t)) or 1.094*Io(exp(-beta*t)-exp(-alpha*t)) where alpha=11354 sec^(-1) beta=647265 sec^(-1) The resulting waveform should give you a peak level of Vo or Io, respectively. >From Figure 24 - Double Exponential Voltage Waveform 4 Time to 10% =.15 usec Time to 90% = 3.0 usec Time to peak should be 6.4 usec +/- 20%, time to 50% of peak (decay side) should be 69 usec +/- 20% Hope this helps. DB > ---------- > From: Price, Ed[SMTP:[email protected]] > Reply To: Price, Ed > Sent: Thursday, December 14, 2000 2:43 PM > To: '[email protected]' > Subject: SAE Spec Question > > > Can anyone tell me what is the shape and amplitude for a pulse which meets > the requirements of SAE AE4L-81-2, Section 5.3, Waveform 4, level 4? > > Thanks! > > Ed Price > [email protected] > Electromagnetic Compatibility Lab > Cubic Defense Systems > San Diego, CA. USA > 858-505-2780 (Voice) > 858-505-1583 (Fax) > Military & Avionics EMC Services Is Our Specialty > Shake-Bake-Shock - Metrology - Reliability Analysis > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: [email protected] > Michael Garretson: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
