Triggering And How To Use It - Velleman-Kit EDU08 Manual

Let's measure

Triggering and how to use it:

Triggering helps us to get a stable trace on the
screen and it also allows us to capture events.
When 'AUTO Volt' and 'AUTO time' is enabled,
the scope triggers automatically.
To enable manual triggering, select 0.1ms/div
and 1V/div from the menu and set Trigger to On:
The display will look like this:
Before we can adjust the trigger level we have
to change the function of the UP/DOWN keys
from setting VOLT/Div to 'changing the trigger
level':
Now we can change the trigger level by
pressing the UP or DOWN keys. The slope
symbol also indicates the
If you move the trigger level to the the center posi-
tion, the trace will become unstable, because it
no longer triggers on a single point, but anywhere
between a falling and a rising edge of the signal:
- 20 -
If you move the trigger level to a point lower
than the signal, the scope will no longer re-
fresh the trace, as the trigger level is no longer
reached.
trigger level.
Now, lets change the slope:
Look closely at the signal now (left), do you see
the difference with the previous screenshot of
our signal (right)?