Using the Scope Functions  3
Agilent U1602B/U1604B User’s and Service Guide  39
Figure 3-14 Select time reference 
Horizontal Mode Functions
Time Base mode 
This instrument provides two types of time base format:
• YT
• XY 
The YT format refers to ordinary volts- versus- time display, that is the 
default for this instrument. In this format, amplitude is plotted on vertical 
Y- axis and time is plotted on horizontal Y- axis. 
XY format changes the display from volts- versus- time to a 
volts- versus- volts display. Channel 1 amplitude is plotted on the 
horizontal X- axis and channel 2 amplitude is plotted on the vertical 
Y- axis. The time base is turned off. Use the cursors to make 
measurements on XY mode waveforms.