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PSI 9000 2U Series
By linking together a number of differently configured sequence points, complex progressions can be created.
Smart configuration of the arbitrary generator can be used to match triangular, sine, rectangular or trapezoidal wave
functions and thus, e.g. a curve of rectangular waves with differing amplitudes or duty cycles could be produced.
Schematic diagram:
Applications and results:
t
A
Example 7
Focussing 1 cycle of 2 sequence points from
100:
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 from
100:
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
one must end with a positive half wave and the
second one 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 point from 100:
Sequence point 1: 1/4th sine wave (angle =
270°)
Sequence point 2: 3 Sine waves (ratio of fre-
quency to sequence time 1:3)
Sequence point 3: Horizontal ramp (f = 0)
Sequence point 4: Falling ramp (f = 0)
