PASCO PI-9880, Инструкция по эксплуатации

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D C P r o g r a m m a b l e P o w e r S u p p l y C u s t o m P r o g r a m
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Scale Factor is the percentage of the programed voltages that will be output. If Scale
Factor is 100%, then the actual programed voltages are output; if Scale Factor is 50%,
the actual output voltages are half of the programed values.
Graph Style can equal 1 for step-style, or 0 for vector-style. In step-style, the Power
Supply outputs only the programed voltages, jumping from one voltage to the next. In
vector-style, the output ramps between the programed voltages. In the illustration
(right), note the difference in total run times for the two styles.
Step Time sets the time (in seconds) between the programed points. The sign of Step
Time determines whether the program plays forward (
+
) or backward (
−
).
Auto Repeat determines the total number of cycles that are output before the pro-
gram stops playing. For indefinite repetition, set Auto-repeat to zero. The sign of
Auto-repeat determines whether the program plays in the only one direction (
+
) or
alternating directions (
−
).
Some examples of parameter combinations and their resulting waveforms are illus-
trated below.
For a periodic or repeating function, the period depends on: the number of programed
points, the Step Time, and the sign of Auto Repeat. If Auto Repeat is negative, you
only need to program the first half of the waveform because the program repeats in
reverse for the second half; however, the first and last points of the program are not
Graph Style = 1
(step-style)
Graph Style = 0
(vector-style)
Scale
Factor
Graph
Style
Step
Time
Auto-
repeat
Waveform Comments
100% 0 1.0 1
Change the Scale Factor to adjust the
amplitude of the custom program.
50% 0 1.0 1
100% 0 2.0 1
The Step Time parameter sets the time
between points and thus the total
length of the program. The sign of Step
Time determines whether the program
is played forward (
+
) or backward (
−
).
100% 0 -1.0 1
100% 0 1.0 2
The Auto-repeat parameter sets the
number of
full cycles that are played.
The sign of Auto-repeat determines
whether the program is played in the
same direction every time (
+
) or in
alternating directions (
−
).
100% 0 -1.0 -1