Instructions
RIGOL  Chapter 2 Functions of the Front Panel of GPSA 
2-54  RSA3000E User Guide 
Table 2-41 Span for OBW Measurement 
Parameter 
Remarks 
Default 
2 MHz 
Range
10 Hz to 3 GHz 
Unit 
GHz, MHz, kHz, Hz 
Knob Step 
OBW span/100, Min = 1 Hz 
Left/Right Arrow Key Step 
Up/Down Arrow Key Step 
at 1-1.5-2-3-5-7.5 step 
6.  Power Ratio 
Sets the percentage the signal power takes up in the whole span power. You can 
use the numeric keys, the knob, or arrow keys to modify this parameter; you can 
also use the touch screen to modify the parameter. 
Table 2-42 Power Ratio for OBW Measurement 
Parameter 
Remarks 
Default 
99% 
Range 
1% to 99.99% 
Unit 
% 
Knob Step 
0.01% 
Left/Right Arrow Key Step 
Up/Down Arrow Key Step 
1% 
For details about the Auto Couple and Meas Preset menus, refer to their 
descriptions on Page 
2-45.  










