PASCO PI-9880 Power Supply - Manual (Page 35)

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M o d e l N o . P I - 9 8 8 0 0 1 2 - 1 2 6 9 5 A C u s t o m P r o g r a m
35
Variable Step Height
Variable Step Width
Variable Pulse Width
Variable Pulse Height
Settings
Graph Type Step Time Auto-repeat
1 2 s 1
Voltage values
0, 3, 5.5, 7.5, 9, 10
The standard step function requires each step to have the same height. This custom program allows a different height for
each step.
Settings
Graph Type Step Time Auto-repeat
1 0.5 s 1
Voltage values
0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 2, 4, 4, 4, 4, 4, 6, 6,
6, 6, 8, 8, 8, 10, 10
The standard step function requires each step to have the same width. This custom program allows each step to have a
different width.
Settings
Graph Type Step Time Auto-repeat
1 0.5 s 0
Voltage values
5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5, 5, 0, 0, 0
The standard square-wave function allows you to change the duty cycle, but all the pulses must have the same width. With
this custom program you can create almost any pattern of pluses (including Morse code).
Settings
Graph Type Step Time Auto-repeat
1 −0.5 s 0
Voltage values
10, 0, 0, 0, 8, 0, 0, 0, 6, 0, 0, 0, 4, 0, 0, 0, 2, 0, 0
This program simulates Pulse Amplitude Modulation (PAM), which is used to introduce the modulation scheme known as
Pulse Code Modulation.