HP Cable Box 8591C manual Full Spqn Zero Span Last Span

Making Measurements Using Spectrum Analyzer Mode

Stimulus-Response Measurements

4.Put the sweep time of the analyzer into stimulus-response auto-coupled mode by pressing More I of 2 , then SWP CPLG SR SA until SR (stimulus-response mode) is underlined. Auto-coupled sweep times are usually much faster for swept-response measurements than they are for spectrum analyzer measurements.

N O T E

In the stimulus-response mode, the II (reactance versus resistance) of the OUT can determine the fastest rate at which the spectrum analyzer can be swept. To determine whether the analyzer is sweeping too fast, slow the sweep time and note whether there is a frequency or amplitude shift of the trace. Continue to slow the sweep time until there is no longer a frequency or amplitude shift.

I

4

REF 48.8 <lBmVAT 10 dB

PEAK / / 1

1 SPAN

I500 0 MHz

u I

\

FULL SPQN

ZERO SPAN

LAST SPAN

:ENTER 350 .O	MHz		SPAN	500.0	MHz
#RES BW	3.0 MHz	VBW 1 MHz	SWP	20.0	msec

Figure 5-6. Spectrum Analyzer Settings According to the Measurement Requirement

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