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EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
PSI 9000 15U/24U Series
By linking together a number of differently configured sequences, complex progressions can be created. Smart
configuration of the arbitrary generator can be used to match triangular, sine, rectangular or trapezoidal wave func
-
tions and thus, e.g. a sequence of rectangular waves with differing amplitudes or duty cycles could be produced.
Schematic diagram:
Applications and results:
t
A
Example 7
Focussing 2 cycles of 1 sequence point:
A sequence point configured as in example
3 is run. As the settings demand that the end
offset (DC) is higher than the start, the second
sequence point run will revert to the same
start level as the first, regardless of the values
achieved at the end of the first run. This can
produce a discontinuity in the total progression
(marked in red) which may only be compen
-
sated with careful choice of settings.
t
A
Point 1
Point 2
Example 8
Focussing 1 cycle of 2 sequence points:
Two sequence points run consecutively. The
first generates a sine wave with increasing
amplitude, the second with a decreasing ampli
-
tude. Together they produce a progression as
shown left. In order to ensure that the maximum
wave in the middle occurs only once, the first
sequence point must end with a positive half
wave and the second start with a negative half
wave as shown in the diagram..
t
A
Point 1
Point 2
Pt. 3
Point 4
Example 9
Focussing 1 cycle of 4 sequence points:
Point 1: 1/4th sine wave (angle = 270°)
Point 2: 3 Sine waves (ratio of frequency to
sequence time: 1:3)
Point 3: Horizontal ramp (f = 0)
Point 4: Falling ramp (f = 0)
