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Fig. 4-23 Pulse Width Shown by the Marker
3) Pulse repetition frequency (PRF) measurement
The pulse repetition interval (PRI) refers to the time interval between any two adjacent pulse responses.
a) Set the output signal of the signal generator:
Set the frequency of the signal generator as 1GHz and power as -20dBm. Connect the output of the signal
generator to the input port of the spectrum analyzer. Set the repetition frequency of pulse modulation as 1kHz and
pulse width as 900ns. Enable the pulse modulation and RF output.
b) Set the spectrum analyzer:
Press [Reset] key.
Press [frequency] and 1[GHz].
Press [frequency], [Span], 10[MHz], [sweep], [Sweep Time Auto Man] and 1.705[s].
Press [BW], [RBW Auto Man
] and 1[kHz].
Press [BW], [VBW Auto Man] and 3[MHz].
Press [BW], [Detector] and [Peak] to activate the peak detector.
Adjust the span until the main lobe and at least one side lobes appear on the screen.