ADVANTEST R3131 Series User Manual

R3131 Spectrum Analyzer Operation Manual
2.2.9 Dynamic Range
Setting the measurement conditions
This changes the analyzer settings so that the input signal is displayed more clearly.
5. Press FREQ, 2, 0, 0 and MHz.
A center frequency of 200 MHz is set.
6. Press SPAN, 1, 0, 0 and MHz.
A frequency span of 100 MHz is set.
7. Press LEVEL, 4, 0 and MHz(-dBm).
The reference level is set to -40 dBm.
ADVANTEST R3131
REF -40.0 dBm
1REF
-40 .0 dBm
Fri 19 Dec 1997Level
ATT 10dB A_mrt B_blnk
Norm
Ref Level
CENTER 200.0 MHz
RBW 1 MHz VBW 1 MHz
SPAN 100.0 MHz
SWP 50 ms
ATT
AUTO /MNL
dB/div ▶
Linear
Units ▶
Ref
Off set
ON /OFF_
Figure 2-36 Screen Display Prior to Changing the RBW
Changing the RBW
The RBW default setting is 1 MHz. The noise level can be reduced by decreasing this
value.
8. Press BW, RBW AUTO/MNL, 1, 0, 0 and kHz.
The RBW mode is changed to manual, and the resolution bandwidth is set to 100
kHz. As a result, the dynamic range has increased and this has reduced the noise
level by approximately 10 dB.
2-43

ADVANTEST R3131 Series Specifications

General

Brand	ADVANTEST
Model	R3131 Series
Category	Measuring Instruments
Language	English