R3131 Spectrum Analyzer Operation Manual
2.3.1 Measuring the Channel Power
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, 0 and MHz.
A center frequency of 1917.950 MHz is set.
6. Press SPAN, 1 and MHz.
A frequency span of 1 MHz is set.
7. Press BW, RBW AUTO/MNL, 1, 0 and kHz.
The RBW is set to 10 kHz.
8. Press LEVEL, 1, 0 and GHz (+dBm).
The reference level is set to 10 dBm.
Setting the offset level
9. Ref Offset ON/OFF,1, 0 and GHz (dB).
The offset level is set to 10 dB.
The measurement values, including values for the external attenuator, are now
displayed.
ADVANTEST R3131
REF 20.0 dBm
10dB/
REF OM
10.0 dB
Mar 20 14.05.33Level
ATT 20dB A_wrt B_blnk
-.N9179 Norm Ref Level
ATT
AUTO /MNL
dB/div
Units 0,
Ref
Offset
ON /OFF
1 — CENTER 1.917950 GHz SPAN 1.000 MHz Input
/750
*RBW 10 kHz VBW 10 kHz SWP SO ms
Figure 2-53 Setting the Offset Level
Measuring the power
10. Press POWER MEASURE.
The Power menu is displayed.
11. Press Channel Power.
The CH Power menu is displayed.
12. Press 1, 9, 1, 7, ., 9, 5, 0 and MHz.
The channel is set to 1917.950 MHz.
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