3 Using the Scope Functions  
38 Agilent U1602B/U1604B User’s and Service Guide 
To Change Trigger Point Indicator 
Time reference   is the reference point on the display for delay time. To 
move the trigger point indicator from the time reference, do the following:
1 Enter the Scope menu by pressing the   button. 
2 In Scope menu, press F3 to access Delay submenu. 
3 On page 1/2, press F2 softkey to display a pull- up menu for the 
following selections:
• Left (10% of the horizontal full scale)
• Center (50% of the horizontal full scale)
• Right (90% of the horizontal full scale)
All events displayed at the left of the trigger point are called pre- trigger 
information because they happen before the triggering. All events at the 
right of the trigger point, measuring after the trigger point, are called 
post- trigger information. The amount of delay range (pre- trigger and 
post- trigger information) is available depending on the sweep speed 
selected and memory depth. 
Notice that the sweep speed is set to 1 division step sequence with   indicator at the 
right corner in the waveform display area (refer to “Oscilloscope Display Overview   23”). 
Turn the vernier scale on by pressing the rotary switch once. You will notice the   
indicator is disappeared and now you can move the sweep speed in smaller increments.