Andrew: Use the 10 uF caps: 1. For RS03 (since the caps are defining the powerline source Z). 2. For RS01 (but it won't make any difference). 3. For RS02 (not clear, but for consistency). 4. For CS06 AC leads, I use one 10 uF cap line-to-line, as shown in Figure CS06-1 (as it lowers the voltage drop across the powerline source Z).
Remove the 10 uF caps: 1. For CS01 (on DC leads, you may need a really big line-to-line cap to lower the voltage drop across the powerline source Z & for AC leads, you likely will need a powerline frequency rejection filter, as it's difficult to see 3 Vrms test signal in the presence of 120 Vrms power). 2. For CS02 (you want to apply the signal to the EUT, not split it with any caps). 3. For CS06 DC leads (since you are adding an isolating inductor between the power source and the EUT). Our heritage from 461, 461A, 461B, 461C & 462 (and all the Notices) has been to hone the art of interpretation. Ed 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 >-----Original Message----- >From: [email protected] >[mailto:[email protected]] >Sent: Tuesday, May 08, 2001 9:05 AM >To: [email protected] >Subject: Mil 461a/b/c > > > >Can anyone advise! > >When testing to mil 461a/b/c for airforce, emissions are done >using 10uF >Capacitors in-line between the supply source and the unit >under test (1 >metre from the EUT). LISNs are used for army and have only >been incorporated >for airforce equipments in 461d/e. > >Are the 10uF Caps supposed to be removed for immunity tests >such as CS01, >CS02 and CS06? >If so what is the reasoning for doing it? > >The test set ups in 462 isn't clear on this subject and test >houses that I >have spoken to tend to leave them in for both emission and >susceptibility >testing. > >Regards > >Andy Price > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
