HP Cable Box 8591C manual 221

Making Measurements Using Spectrum Analyzer Mode

Stimulus-Response Measurements

REF	4e1.8		dBmV	AT 10	dB					“ID	AVG
PEAK
										ON	Ofi
LOG		1
10
dB/										DETECTOR
										” SP NG
OL										NORML	IZE
										o&l	OFF
38	7
dB
										NORMLIZE
										POSITION
WA-SE3
SC	FC									A <--> B
CORf
							SPAN	500.0	MHZ
	#RES		BW 10	kHz		VBW 10 kHz	SWP	15.0	set

Figure 5-9. Normalized Trace

9.To measure the rejection of the filter at a given frequency, press (MKR), and enter the frequency. For example, enter 350 MHz. The marker readout displays the rejection of the Clter at 350 MHz (see Figure 5-10).

/tp								MKR	350 0	MHZ
REF 48.8		dBmV			AT 10	d8			-20.79	dB
PEAK
LOG
10
	- -w				-						MARKER
dB/
											c
											MARKER
											AMPTO
											SELECT
										1234
WA-SB
SC FC											MARKER 1
CORA
											Q OFF
CENTER 350.0			MHz					SPAN	500.0	MHz
XRES		BW	10	kHz			VBW 10 kHZ	SWP	15.0	set

Figure 5-10. Measure the Rejection Range with Delta Markers

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