Ed, the main difference has to do with the tip. An air discharge tip is rounded, not sharp. While a contact tip is sharp. Each one will allow a spark to jump the gap to the DUT, but in different ways.
> Michael Sundstrom > Product Test Technician EMC > Nokia Mobile Phones, Dallas PCC > > * Email [email protected] > % Desk (972) 374-1462 > *Mobile (817) 917-5021 > * Fax (972) 374-0901 amateur call: KB5UKT ------------------------------------------- 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,"

