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SIGLENT
SSA3000X User Manual 24
2.1.2.5 Zoom Out
Set the span to twice the current value. At this point, the signal on the screen is zoomed out to gain
more information about the signal.
2.1.2.6 Last Span
Set the span to the previous span setting.
2.1.2.7 X-Scale
Set the scale type of X-axis to Lin or Log.
In Log scale type, the frequency scale of X-axis is displayed in the logarithmic form.
If the scale type of X-axis is in the logarithmic type form, the scale type will be switched into Lin
when turning on Meas.
2.1.3 Amplitude
Set the amplitude parameters of the analyzer. Through modifying these parameters, signals under
measurement can be displayed in a proper mode for easier observation and minimum error.
2.1.3.1 Ref Level
Set the maximum power or voltage can be currently displayed in the window. The value is
displayed at the upper left corner of the screen grid.
The maximum reference level available is affected by the maximum mixing level, input attenuation
is adjusted under a constant maximum mixing level in order to fulfill the following condition:
Ref <= ATT – PA - 20dBm
Table 2-6 Ref Level
Parameter
Explanation
Default
0 dBm
Range
-100 dBm ~ 30 dBm
Unit
dBm, dBmV, dBuV, V, W
Knob Step
In Log scale mode, step = Scale/10
In Lin scale mode, step = 0.1 dB
Direction Key Step
In Log scale mode, step = Scale
In Lin scale mode, step = 1 dB
Related to
Attenuator, Preamp, Ref Offset
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