User manual

Chapter 2 Front Panel Operations RIGOL
DP800A User’s Guide 2-13
Exp Rise
 Exp Fall
The Exp Fall waveform is as shown in the figure below. The instrument
determines the Exp Fall waveform according to the maximum (denoted by
MAX), minimum (denoted by MIN), total number of points (denoted by P)
and fall index (denoted by FallIndex) currently set. The waveform function
is (MAX-MIN)*e
-i*FallIndex/P
; wherein, i is independent variable and
creates P groups of parameters from 0 to (P-1). The timing time is
determined by the time interval currently set.
Exp Fall
Note
When the templet currently selected is Exp Rise or Exp Fall, the timer parameters
created cannot reach the maximum or minimum due to the characteristic of the
exponential function. The range of the timer parameters created is related to the
rise index or fall index currently set. The larger the rise index or fall index is, the
larger the range of the timer parameters will be, as shown in the figures below
(maximum=8, minimum=0, total number of points=100, rise index/fall index are
1, 4, 7 and 10 respectively).