Keywords: Spectrum analyzer, display, noise floor.jpg Spectrum analyzer display showing noise floor Self made Transferred from http //en wikipedia org en wikipedia; transferred to Commons by User Wdwd using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper 2004-07-07 Original uploader was Brandon irwin at http //en wikipedia org en wikipedia Released into the public domain by the author en wikipedia Brandon irwin Original upload log page en wikipedia Spectrum_analyzer 2C_display 2C_noise_floor jpg 2004-07-07 20 38 Brandon irwin 448×336× 36727 bytes <nowiki>Reverted to earlier revision</nowiki> 2004-07-07 20 36 Brandon irwin 448×336× 36727 bytes <nowiki>Spectrum analyzer display showing a signal below the noise floor </nowiki> 2004-07-07 20 35 Brandon irwin 448×336× 36727 bytes <nowiki>Spectrum analyzer display showing noise floor Self made msg PD </nowiki> White noise Frequency spectrum Spectrum analyzers |