Dear Members, With the preselector turned ON in spectrum analyzer mode of the ESU receiver, the spectrum from 2MHz to 8MHz looks with much higher RBW (more dense and higher noise floor). I do note this is the same range as one of the filters (See Page 4 of the data sheet at http:/ www2.rohde-schwarz.com/file_7880/ESU_dat_sw_en_v02.pdf). I am informed that ESIB receiver has the similar look. Is the above spectrum normal? I am informed that I should turn off the preselector while in spectrum analyzer mode, which I agree with. With the preselector OFF in spectrum analyzer mode, the spectrum looks fine. I would like to learn if your receiver has the similar spectrum. Thank you and look forward to hearing from you. Best regards, Grace - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/
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