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FM modulation 50Hz HP fliter

Question asked by sidney.higuchi on Jun 25, 2012
Latest reply on Jul 9, 2012 by tabbott
E4440A options 115,123,105,233,BAB. S/N SG46182507  w/ N5532A option 526 S/N N10149.  Monitoring output of a 8642A @ 1.5GHz, 100kHz FM, 0dBm, modulation frequency 300Hz.  I selected HP 50Hz and LP 3kHz and + peak FM on PSA/MMR.  The analyzer measures 39---kHz.  I take off the 50Hz HP filter and now this thing displays 99.9--kHz.   I need to use the LP and HP filters to minimize residuals to test a mod. analyzer. Is this thing broke or what?  

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