Agilent Technologies N9320A Podręcznik Użytkownika Pobierz pdf (Strona 48)

40 N9320A Spectrum Analyzer

3 Functions and Measurements

3 Set the center frequency, span and reference level:

Press > Center Freq > 300 > MHz

Press > Span > 2 > MHz

Press > Ref Level > 40 > –dBm.

4 Move the desired peak to the center of the display:

Press

> Mkr -> CF

5 Reduce the span to 500 kHz, if necessary re- center the peak:

Press > 500 > kHz

6 Set the attenuation to 20 dB:

Press > Attenuation > 20 > dB

Figure 10 A signal closer to the noise level

Note that increasing the attenuation moves the noise floor

closer to the signal level.

7 To allow more of the signal power to pass through the

analyzer, decrease the attenuation to 0 dB.

Frequency

SPAN

Amplitude

Peak

Marker

SPAN

Amplitude

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 181 182

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Agilent Technologies N9320A Podręcznik Użytkownika Strona 48