Fluke Biomedical 190M - Manual (Page 40)

190M Series Medical ScopeMeter
Users Manual
30
If it displays WRONG TB the time base setting does not
enable the test tool to display an FFT result. It is either too
slow, which can result in aliasing, or too fast, which results
in less than one signal period on the screen.
7 F1 Perform a spectrum analysis on
trace A, B, C or D.
8 F2 Set the horizontal amplitude scale
to linear or logarithmic.
9 F3 Set the vertical amplitude scale to
linear or logarithmic.
10 F4 Turn the spectrum function off/on
(toggle function).
Figure 11. Spectrum measurement