Saluki S3331 Series, Quick Start Manual

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1) As shown in Figure 3-5, connect the outputs of two signal generators to the spectrum analyzer input.
2) Set the frequency of one signal generator to 1800MHz and amplitude to -10dBm. Set the frequency of the other signal generator to
1800.05MHz and signal output amplitude to -50dBm. Turn on the RF outputs of the two signal generators.
3) Set the spectrum analyzer to observe the signal:

Press
【
Preset
】
;

Press
【
Freq
】
, [Center Freq], 1800.025[MHz].

Press
【
Span
】
, 500[kHz].

Press
【
BW/Swp
】
, [Res BW Auto Man], 30[kHz].
The squareness factor of the resolution bandwidth filter of S3331 Handheld Microwave Spectrum Analyzer is 5:1, when the resolution
bandwidth is 30kHz, the bandwidth on 60dB point is 115kHz, the half bandwidth is 57.5kHz, which is wider than the frequency interval of
50kHz, so the two input signals cannot be resolved, as shown in Figure 4-6.
Figure 4-6: 30KHz RBW
4) Reduce the resolution bandwidth to view the small signals hidden.

Press
【
BW/SWP
】
, [Res BW Auto Man], 1[kHz].
At this moment, the half bandwidth is narrower than the frequency interval of 50 kHz, so the two input signals can be resolved. The two
signals could be clearly seen on the screen.
5) Read the frequency difference and amplitude difference by the marker.

Press
【
Peak
】
and put the marker on the peak of the large signal;

Press
【
Marker
】
, [Delta], to enable the delta marker;