10.
Use the trigger LEVEL knob to find out the upper limit and lower limit of the trigger range. To do
this, turn the knob to increase the trigger level up until the signal is no longer triggered. This will
be the upper limit, so make note of the voltage of this level. Likewise, decrease the trigger level to
find the lower limit. Make note of the voltage of this level.
11.
To determine the trigger center point, simply take the difference of the upper limit and lower limit,
then divide by 2. The result will be the current trigger center level.
12.
If the result seems off from the actual signal (see image below), re-adjustments can be made in the
following steps.
13.
Take the trigger center level from step 11 and turn the LEVEL knob until the trigger level is at the
same level.
14.
Now, select “center” from the soft menu and use the universal knob
to increase or decrease the
value until you catch the critical point between where the signal is triggered and not triggered.
You will know the signal is not triggered when the waveform starts moving across the screen and
not holding a steady sine wave.
15.
Once finished, move the trigger level by turning the LEVEL knob to the opposite polarity of the
trigger center level calculated in step 11. Meaning, take the negative of that value and set the
trigger level to that value on screen. Observe to see whether the waveform is being triggered or
not. If not, repeat step 13-14 again. Follow the above steps for CH2 and do the same thing by
selecting “CH2” as “Source” from the soft menu.
Note:
Increasing the “center” value will adjust the trigger center point upwards. Decreasing the
“center” value will adjust the trigger center point downwards.
16.
Below is an example that follows the instruction steps 10-15 above.
