Front Panel Key Reference RIGOL
User’s Guide for DSA1000 Series
2.1.2 SPAN
Sets the span value of the analyzer. The changing of this parameter will affect other
parameters associated with the FREQ function, and restart the sweep.
2.1.2.1 Span
Sets the frequency range of the sweep. When pressed, the frequency mode is
switched to Center Freq and Span in order to enter the desired parameter data. In this
mode, parameters you specified are always shown at the lower left and right sides of
the display grid.
Key Points:
The start and stop frequencies are changed with the span automatically.
In manual span mode, the span can be set down to 100 Hz (the only way into the
zero-span mode is to press the Zero Span menu option) and up to the full span
described in “
Specification”.
Modifying the span in non-zero span mode may cause an automatic change in
both CF step and RBW if they were in Auto mode, and the change of RBW may
influence VBW (in Auto VBW mode).
In non-zero span mode, variation in the span, RBW or VBW would cause a change
in sweep time.
In non-zero span mode, neither “Video” trigger nor “1/Δtime” readout function is
valid.
You can modify this parameter using the numeric keys, knob, or direction keys.
For more details, please refer to “Parameter Input”.
Table 2-6 Span
Default 3 GHz
Range* 0 Hz to 3 GHz
Unit GHz, MHz, kHz, Hz
Knob Step Span/200, Min = 1 Hz
Direction Key Step in 1, 2, 5 sequence
Note*: 0 Hz is available only in zero span.
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