Saluki S3331 handheld spectrum analyzer has many measurement functions, including continuous signal measurement, N dB bandwidth measurement, channel power measurement, occupied bandwidth measurement, weak signal capture, harmonic distortion measurement, etc.. In this section, we mainly show the operation of using pre-amplifier to capture weak signals.
Following example uses a S1131 signal generator and generates a 500MHz, -80dBm continuous signal.
1) Connect the signal generator output port to S3331 RF test port.
2) Press [Preset] key to return the instrument to default status
3) Set test frequency.
Press [FREQ] key;
Select [Center FREQ] and input 500MHz;
Press [Span] key;
Select [Span] and input 10MHz.
4) Enable the pre-amplifier
Press [AMP] key;
Select [Ref level] and input -20dBm;
Select [Pre Amp On Off], enable the pre-amplifier.
The trace will be displayed as shown in the figure below.
5) Read out the result