Not sure I can help you, but what type of shielding to which are you/they referring?
Tin foil, tin foil with a drain wire, 80% braid, 95% braid ... ? Am I to understand that these other parties are predicting the shielding will reduce emissions by at BEST 1/2, whereas you state a reduction by at WORST 1/30? Or to really rough it, by at least one order of magnitude better? Not sure I have an answer for you, just thought I'd ask some questions. Regards, Doug ... > From: MikonCons <[email protected]> > To: [email protected] > Cc: [email protected] > Subject: SE of cable outer shield > Date: Friday, October 31, 1997 4:58 PM > > Gentlemen/Ladies: > > I am trying to predict worst-case radiated emissions for cables carrying > differential ECL signals. I hope you can help me directly, or refer me to > some technical material that will help. > > I need to determine the added shielding versus frequency (10 MHz to 22 GHz) of > an overall (outer) shield over a group of twisted shielded pairs which are > driven by balanced differential sources (ECL devices). Some parties indicate > only a 6 dB improvement, but I anticipate substantially more (perhaps 30 to 40 > dB at 100 MHz). > > Thank you in advance, > > Mike Conn > Owner/Principal Conaultant > Mikon Consulting
