Hello group, I recently carried out a conducted emission in our unlined screen room with no EUT connected. I.e just the LISN inside and measuring receiver outside the room. I was expecting the plot to be a horizontal line and very low perhaps in the region of 10 or 20dB. Instead I noticed that the plot starts at about 40dB at 150kHzand decreases to about 20dB at around 1MHz and then after that is a horizontal line all the way to 30MHz. Bearing in mind that the room is very well grounded and I use a reputable measuring device. My questions are:
1-Is this what one would expect to see? 2-Why the noise floor so high in an screen room? 3-What can we do to reduce the noise floor? 4-What is the best method to ensure that the room is O.K? Any help and advice is appreciated. With regards Peter E-mail: peterh...@aol.com --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
