R3132 Series Spectrum Analyzer Operation Manual
2.2.9 Measuring low level signals
2-41
Built-in pre-amplifier
The analyzer include a pre-amplifier for frequency band of 3 GHz and are available
for high sensitive measurements.
The averaging function is turned off, and the RBW and VBW functions are set to
AUTO mode.
12. Press AVG A ON/OFF(OFF).
The averaging function is turned off.
13. Press BW, RBW AUTO/MNL(AUTO) and VBW AUTO/MNL(AUTO).
The RBW and VBW functions are set to AUTO mode.
14. Press LEVEL and Hi Sens ON/OFF(ON).
The noise level decreases by approximately 25 dB.
Figure 2-32 Spectrum Displayed when the pre-amplifier is Used
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