5962-9217E.pdf | | Agilent PN 89400-12
Understanding Time and Frequency Domain
Interactions in the Agilent 89400 Series
Vector Signal Analyzers
Product Note
A key strength of the Agilent Techno-
logies 89400 Series vector signal
analyzers (VSAs) is their ability to
move easily between time and fre-
quency domain measurements. This
flexibility is ideal for analyzing
signals that change with time, whether
they are modulated, burst, pulsed, or
transient.
However, when using both domains
simultaneously, one quickly finds Figure 1. Description of FFT terms
that measurement parameters in one
domain interact with those in the
other. Changing resolution bandwidth T = time record length (sec) while RBW is the analyzer's 3 dB
affects the length of the time display, Nt = number of time samples measurement |