Rigol DSA1030, User Manual

Page: 187 / 287

Measurement Examples RIGOL
User’s Guide for DSA1000 Series 3-11
3.5 Measuring the N dB Bandwidth
In the example below, we use a generator (such as
RIGOL DG3101A) to output a
sine signal with 100 MHz and -10 dBm as the signal under measure.
Procedures:
1.
Device attachment
Connect the output terminal of the generator to the RF INPUT 50Ω terminal on
the front panel of the analyzer.
2. Use the N dB bandwidth measurement function
(1)
Reset the analyzer
－
Press Preset
(2) Set the parameters
－
Press FREQ
－
Press Center Freq and enter 100 MHz.
－
Press SPAN
－
Press Span and enter 2 MHz.
(3) Use the N dB bandwidth measurement function
－
Press Marker Fctn
A marker will be activated if no Marker has been turned on before.
－
Press N dB BW and enter 3 dB.
3. Measurement result
From the active area shown below, we can see that the bandwidth of the two
points where the signal degrees 3 dB from the current marker is 303.333 kHz.