RIGOL  Chapter 2 Front Panel Operation 
User’s Guide for DSA800/E Series 
Sweep/Trig 
 
Set parameters about the Sweep and Trigger functions, including sweep time, auto 
sweep time, sweep mode, number of sweep, trigger type, etc. 
 
 
Sweep Time 
 
Set the time needed for the spectrum analyzer to finish a sweep within the span 
range. The sweep time can be set in “Auto” or “Manual” mode and the default is 
“Auto”. 
 
Key Points: 
  In non-zero span, the analyzer selects the shortest sweep time on the basis of 
the current RBW and VBW settings if Auto is selected.  
  Decreasing the sweep time would speed the measurement. However, an error 
may be caused if the specified sweep time is less than the minimum sweep 
time in Auto coupling; at this point, “UNCAL” is shown in the status bar on the 
screen.  
  You can modify this parameter using the numeric keys, knob or direction keys. 
For more details, please refer to “Parameter Setting”.  
 
Table 2-16 Sweep Time 
37.5 ms 
Range*  20 us to 7500 s 
Unit  ks, s, ms, us, ns, ps 
Knob Step  Sweep time/100, Min = 1 us 
Direction Key Step  in 1, 1.5, 2, 3, 5, 7.5 sequence 
Note: *The minimum in non-zero span mode is 1 ms.