Using the Scope Functions  3
Agilent U1602B/U1604B User’s and Service Guide  93
Run/Stop Controls
The Run/Stop   button at the front panel allows users to begin or 
stop signal acquisition. In Run mode, if the trigger is set to Normal  mode, 
the display will not update until a trigger is found. If the trigger mode is 
set to Auto mode, the instrument looks for a trigger. If no trigger is found, 
it will set the trigger automatically and display the input signals 
immediately. 
The Auto and Normal trigger indicator is shown in the trigger line located 
at the right of the display. If no trigger is found, the T’D (Trigger 
Detected) indicator will flash, indicating that the instrument is forcing 
triggers.
In  Stop mode, the instrument is forced to stop acquiring signal. The 
acquisition status is displayed at the right of the display indicating if the 
instrument is in run or stop mode.
Figure 3-50 Run and Stop modes
Run and Stop acquisition status