Velleman projects EDU06 Assembly instructions - Manual (Page 5)

5
Measuring probe:
To be able to display waveforms, we need to connect the signal to the input of the oscilloscope.
Similar to a multimeter, the oscilloscope uses a measurement lead, but here it is called a ‘probe’.
Connecting the probe:
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Probe tip: The (+) of your probe. It is
needle-shaped to ensure a good electrical
contact with your measuring point.
BNC connector: Connects to the
input of your oscilloscope.
Ground lead with alligator clip:
The (-) of your probe. Connect the alligator
clip to the ground or (-) of the circuit you
wish to examine.
Probe clip: Clips onto the probe tip
and allows you to connect the probe to
the measuring point in a permanent way,
so you have your hands free.
x1/x10 switch: When set to ‘x1’, the
signal is passed on to the scope without
attenuation. When set to ‘x10’, the signal
is divided by 10, so the signal that is seen
by the scope is ten times smaller than it
acuatally is. This allows you to measure
higher voltages without damaging your
scope.
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Setting up the board:
The board requires a 9VAC (Alter-
nating Current) adaptor (e.g. Velleman
PS905AC (230VAC)). A DC adaptor
instead of an AC adaptor will not damage
the board, but most experiments will not work
correctly. Connect the adaptor at the left hand
side of the board and plug-in the adaptor.
Once powered, the LEDs (LD2 & LD3) should blink
alternately. The board is now ready to perform experiments.
Oscilloscope basics