PASCO PI-9880, Инструкция по эксплуатации

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9
Tutorial
This tutorial will introduce you to the DC Programmable Power Supply. As you follow the steps, it will
be helpful to measure and view the Power Supply’s voltage output. Here are three possible ways to do
that:
1. Use a data-acquisition program such as DataStudio with a voltage sensor. The sample waveforms
shown in the tutorial were collected in this manner.
2. Use an digital storage oscilloscope capable of displaying several second’s worth of data.
3. Use a normal volt meter. This option will not allow you to reproduce the graphs on the following
pages, but you will be able to observe the variation of the Power Supply’s output.
If possible, connect a load resistor (or other device such as a small light bulb) to the output so that you
can look at the current draw. You can use any resistor from about 20
Ω
to 100
Ω
, but check the power
rating to make sure it will not overheat; during the tutorial, you will apply voltages up to 10 volts.
Set-up
POWER and OUTPUT connections
1. Plug the AC adapter into a wall outlet and
into the port labeled POWER on the Power
Supply.
2. Use a pair of banana-plug patch cords to
connect a load resistor (or other device) to
the Power Supply’s red (
+
) and black (
−
)
OUTPUT ports.
3. Connect a voltage sensor, meter, or oscillo-
scope to the OUTPUT ports.
Buttons
4. Notice the two buttons: and . You will
use these buttons, along with the knobs, to
control the Power Supply’s output and dis-
play.
Load factory settings
5. Push and hold both buttons. While holding
the buttons, turn on the power switch (if it is
already on, turn it off and on again). Con-
tinue to hold both buttons until the display
shows LLLL, then release the buttons. The
original factory settings have been loaded.