RIGOL DSA875 - Manual (Page 64)

RIGOL Chapter 2 Front Panel Operation
User’s Guide for DSA800 Series 2-12
AMPT
Set the amplitude parameters of the analyzer. Through modifying these
parameters, signals under measurement can be displayed in a proper mode for
easier obsercation and minimum error.
Auto Scale
This function enables the readout resolution of the Y-axis to be the maximum
possible while at the same time ensures the completeness of the signal. When
enabled, the system sets the reference level automatically in order to place the
peak of the signal within the topmost grid for easier observation of the trace.
Figure 2-4 Before Auto Scale