R3267 Series Spectrum Analyzer Operation Manual (Vol.1)
2.3.1 Measuring Average Power of Digital Modulation Signal
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Setting the measurement conditions
This changes the analyzer settings so that the input signal is displayed more clearly.
5.
Press FREQ, 1, 9, 1, 7, ., 9, 5 and MHz.
A center frequency of 1917.95 MHz is set.
6.
Press SPAN, 2, 0 and MHz.
A span frequency of 20 MHz is set.
7.
Press COUPLE, RBW AUTO/MNL(MNL), 1 and MHz.
An RBW of 1 MHz is set.
8.
Press VBW AUTO/MNL(MNL), 1, 0 and MHz.
A VBW of 10 MHz is set.
NOTE:
To reduce measurement errors, make sure that VBW is greater than the
RBW.
VBW > RBW
9.
Press LEVEL, 1, 5 and GHz(+dBm).
The reference level is set to +15 dBm.
10. Press A, Trace A Detector and Sample.
The trace detector is set to sample detector mode.
NOTE:
Sample detector mode is used to keep measurement errors to a minimum.
11. Press LEVEL and adjust the reference level using the data knob.
When the signal peak is one or more divisions away from the reference level,
adjust the signal peak using the data knob so they are as close as possible.
