HP 8591C Manual do Utilizador Página 243

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I
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Making Measurements Using Spectrum Analyzer Mode
Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107
only)
1. Set the center frequency of the spectrum analyzer to the frequency of the
modulated signal. Decrease the frequency span of the spectrum analyzer.
If necessary, adjust the reference level of the spectrum analyzer so that
CENTER 50.000 MHz
SPhN
5.000 MHz
RES
BW 30
kHz VBW
38
kHz
SWP
28
hS?b
the peak signal is displayed near the top graticule.
FULL
SPRN
ZERO
SPtiN
LAST
SPAN
BRNO
LOCK
Figure
5-20.
Setting the Center Frequency, Span, and Reference level
The Gate Utility can be used to simplify the following steps. See Chapter 6 for descriptions of the
gate utility softkeys.
5-43
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