Oscilloscope:
Oscilloscopes are observational tools, allow technicians to view signal voltages, which
constantly oscillate (hence the name).
Basic Operation of an Oscilloscope:
Oscilloscopes typically consist of four sections. The display is typically the most
significant part of the device and can be either LCD or CRT screen.
The screen displays the signal voltage, with vertical and horizontal reference lines.
These lines, taken together, are called the graticule. There are three controls for the
screen, which are focus, intensity, and beam finder knobs.
Inputting a Signal:
To use an oscilloscope, a technician must input the desired signal to the oscilloscope.
To do this, the technician must feed the signal into one of the input connectors. These
are most commonly coaxial connectors.
Basic Operations:
The Trace:
- The trace is one of the most basic operations of an oscilloscope. The oscilloscope
draws a trace, which is a horizontal line, across the screen.
Focus Control:
- This allows users to adjust the sharpness of the trace. New flatpanel model do
this automatically.
Beam Finder:
- This control prevents the trace from deflecting off screen or otherwise being
blocked. Because the beam finder prevents the trace from deflecting off screen, it
may temporarily distort the trace.
Timebase Control:
- This control determines how quickly the oscilloscope draws the trace. This
control allows users to manually select the sweep speed, which is in units of
seconds per unit on the graticule.
Intensity Control: