HP Cable Box 8591C manual Marker-Cf, low-level Signal

Making Basic Measurements Using Spectrum Analyzer Mode

Measuring low-level Signals Using Attenuation, Video Bandwidth, and Video Averaging

N O T E

The total power of all input signals at the spectrum analyzer input must not exceed the maximum power level for the spectrum analyzer.

1.Connect an antenna to the spectrum analyzer input. Press (PRESET).

2.Reduce the frequency range to view a low-level signal of interest. For example, narrow the frequency span from 88 MHz to 108 MHz by pressing

(FREQUENCY), START FREQ , 88 m, STOP FREQ , 108 (MHz_).

3.Place a marker on the low-level signal of interest. Press IIVIKR] and use the knob to position the marker at the signal’s peak.

4.Place the signal at center frequency by pressing (MKR) then

MARKER-CF.

5.Reduce the span to 10 MHz. Press (SPAN), and then use the step-down key

(m). See Figure 4-15.

FULL

SPAN

Figure 4-15. low-level Signal

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