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SSA3000X Plus User Manual 49
Figure 2-11 N dB BW
When the measurement starts, the analyzer will search for the two points which are located at both
sides of the current point with N dB fall or rise in amplitude and display the frequency difference
between the two points in the active function area. "----" would be displayed if the search fails.
Table 2-30 N dB Noise
Parameter
Explanation
Default
-3 dB
Range
-100 dB ~ 100 dB
Unit
dB
Knob Step
0.1 dB
Direction Key Step
1 dB
2.3.3.4
Freq Counter
Turn on or off the frequency counter. The frequency readout is accuracy is up to 0.01 Hz.
The function is valid only when selecting marker 1.
If marker 1 is selected but not active, turning on the frequency counter will open marker 1 Normal
marker automatically.
The frequency counter measures the frequency near the center frequency in Zero span.
2.3.3.5
Off
Turn off the noise marker, N dB BW measurement or Frequency Counter, but not the marker itself.
