Chapter 2 Functions of the Front Panel of GPSA
RIGOL
RSA3000E User Guide
2-59
2.
Avg Mode
Sets the average mode to "Exponential" or "Repeat". The default average mode
is "Exponential".
When "Exponential" is selected, the result is the exponential average of the
measurement results obtained in the past N times (N is specified in "Avg
Number").
When "Repeat" is selected, the result is the arithmetic average of the
measurement results obtained in the past N times (N is specified in "Avg
Number").
3.
Avg State
Selects whether to averaging the measurement results. By default, it is set to
"On".
4.
Offset Freq
Sets the difference between the center frequency of the carrier and that of the
noise. 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 2-47 Frequency Offset for C/N Ratio Measurement
Parameter
Remarks
Default
2 MHz
Range
3 Hz to 1 GHz
Unit
GHz, MHz, kHz, Hz
Knob Step
offset frequency/100, Min = 1 Hz
Left/Right Arrow Key Step
Up/Down Arrow Key Step
at 1-1.5-2-3-5-7.5 step
5.
Noise BW
Sets the bandwidth of the noise to be measured. 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 2-48 Noise Bandwidth for C/N Ratio Measurement
Parameter
Remarks
Default
2 MHz
Range
3 Hz to 1 GHz
Unit
GHz, MHz, kHz, Hz
Knob Step
noise BW/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.
Carrier BW
Sets the bandwidth of the carrier to be measured.
The carrier bandwidth is related to the noise bandwidth, and the settable
