I'm not familiar with the software in question, but most spectrum analyzer displays are linear, with some processing taking the spectrum analyzer display and plotting it out as log scale. If you have "dense" enough info about the transducer factor such that no significant interpolation is necessary, then it doesn't matter if you list it linearly and plot log, or vice versa. As long as you have a limit such as the FCC RE limit which is flat with discontinuous steps log or linear doesn't matter either. Ditto for the old FCC CE limit which was 48 dBuV from 450 kHz to 30 MHz. But the new FCC/CISPR CE limit has a non-zero slope plotted on a log scale, so there you need either an equation or list it as you plot it.
From: "Franck GALVIN" <[email protected]> Reply-To: "Franck GALVIN" <[email protected]> List-Post: [email protected] List-Post: [email protected] List-Post: [email protected] List-Post: [email protected] Date: Tue, 6 May 2003 17:35:49 +0200 To: <[email protected]> Subject: Correction factors Dear all, I perform conducted or radiated emission test with HP8594EM spectrum analyser or HP8656A receiver. To not have measurements errors I must enter correction factors (antenna or LISN, cable and other Š). My questions are: 1/ When you enter data to antenna factors for example, you write Œ¹frequency¹¹, Œ¹amplitude¹¹ and what about Œ¹frequency scale¹¹ (log or lin) ? 2/ Does frequency scale depend of correction type (cable, amplifier, antenna, LISN, transient limiterŠ)? Thanks in advance for your answers. Franck GALVIN eLAbs (France)
