The electric field is developed between septum and outer shell, so the field is vertically oriented at the center of the septum, but flaring towards the horizontal near septum edges, as in any TEM cell. This is not a drawback for an EUT small enough to be placed in multiple orientations between base and septum. It IS a problem for EUT-attached cables. These would need to be evaluated using another technique, such as the absorbing clamp.
Disclaimer: I am fortunate not to have an employer to protect with the usual legalese about these being my opinions not my employers. But the bit about using a cable current measurement to separately control cable-sourced radiated emissions is controversial. All my experience indicates it is definitely the way to go, and I have a public paper trail so stating. But you could also find people adamantly opposed to this point-of-view. End of disclaimer. Ken Javor ---------- >From: "Aschenberg, Mat" <[email protected]> >To: [email protected] >Subject: GTEM Stuff >Date: Fri, Jan 12, 2001, 12:02 PM > > > Here is another specific question dealing with GTEM - OATS correlation. > > Is a GTEM cell horizontally or vertically polarized? > > Thanks for your help, > Mat > Mathew Aschenberg > Agency Engineer > EchoStar Technologies Corporation > 90 Inverness Circle East > Englewood, CO 80112 > > > > ------------------------------------------- > 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]
