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R3267 Series Spectrum Analyzer Operation Manual (Vol.1)
2.3.14 Carrier Frequency and Power Measurements Using Pulsed RF Signals
2-128
Calculating the peak power
19. Peak power P is calculated using the formula shown below.
P = P’ -20 log (1.5
×
τ
×
RBW)
P’:
Apparent power with RBW set to 10 kHz.
RBW: Set value of the resolution bandwidth
τ
:
Pulse width
Measuring the pulse repetition frequency
20. Press SPAN and Zero Span.
Zero span is set.
21. Press SWP, 1, 0 and kHz(ms).
A sweep time of 10 ms is set.
22. Press Trigger Setup.
The Trigger Setup dialog box is displayed.
23. Set Source to VIDEO.
The video trigger starts to sweep.
24. Select Trigger Level and adjust the trigger level using the data knob.
Trace is frozen on the screen.
25. Press RETURN.
The Trigger Setup dialog box is closed.
26. Press MKR and MKR.
Move the Normal marker to the peak on the left side turning the data knob.
The normal marker is displayed on the trace peak.
27. Press Delta Marker.
Move the Delta marker to the peak on the right side turning the data knob.
The value of the delta marker is the pulse repetition frequency (freq).