Instructions

Digital Storage Oscilloscope 23
3. Press the Source softkey, turn the Universal Knob to select CH1~CH4 as the
trigger source.
4. Turn the Trigger Level Knob to adjust the trigger level to the desired place.
5. Press the Polarity softkey to select Positive or Negative pulse that to trigger on. The
current trigger polarity is displayed at the upper right corner of the screen.
6. Press the When softkey, turn the Universal Knob to select the desired condition,
and push down the knob to confirm.
 < (less than a time value): trigger when the positive or negative slope time of
the input signal is lower than the specified time value.
For example, for a positive pulse, if you set t (pulse real width) < 100ns, the
waveform will trigger.
 > (greater than a time value): trigger when the positive or negative slope time
of the input signal is greater than the specified time value.
For example, for a positive pulse, if you set t (pulse real width) >100ns, the
waveform will trigger.
 != (not equal to time value): trigger when the positive or negative slope time of
the input signal is not equal to the specified time value.
 = (equal to time value): trigger when the positive or negative slope time of the
input signal is equal to the specified time value.
For example, for a positive pulse, if you set t (pulse real width) = 200ns, the
waveform will trigger.
6. Press the Next Page softkey and press of Lower Upper softkey to select Lower
or Upper the trigger level; then turn the Trigger Level Knob to adjust the position.