Chapter 2 Functions of the Front Panel of GPSA RIGOL
RSA3000 User Guide 2-9
Full Span
Sets the maximum span.
Zero Span
Sets the span to 0 Hz. The values of start frequency and stop frequency are the same
as that of the center frequency. The X-axis is time. The analyzer measures the
time-domain characteristics of the amplitude at the center frequency point of the
input signal.
Remarks:
The zero span mode displays the time-domain characteristics of the signal's fixed
frequency components. Great differences can be found between the zero span and
the non-zero span. The following functions are invalid in zero span.
âš« "Signal Track" under FREQ;
⚫ "Mkr -> CF", "Mkr -> CF Step", "Mkr -> Start", "Mkr -> Stop", "Mkr Δ -> CF",
and "Mkr Δ -> Span" under Marker To;
AMPT
Sets the amplitude parameters of the analyzer. You can modify these parameters to
make the signals under test be displayed with minimal errors in the current window,
easy for you to observe.
Ref Level
Sets the maximum power or voltage that can be displayed in the current window.
Remarks:
âš« As the RF link is limited by the maximum mixer level, when the attenuation is
reduced, the reference level will be reduced to meet the limitation of the mixer
level; when the attenuation is increased, the reference level will remain
unchanged.
âš« You can use the numeric keys, the knob, and the arrow keys on the front panel
to modify this parameter; also you can modify it on the touchscreen. For details,
refer to descriptions in "Parameter Setting".
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