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Application Examples
DS O5000 Series Digital Storage Oscilloscope User Manual
54
1. Set the Probe option attenuation to 10X.
2. Push the AUTOSET button to trigger a stable waveform display.
3. Push the Single Cycle option button in the Autoset menu and read out the signal pulse width.
4. Push the TRIG MENU button.
5. Push F1 to select Pulse for the Type option; push F2 to select CH1 for the Source option; turn
the TRIGGER LEVEL knob to set the trigger level at the bottom of the signal.
6. Push F6 to enter the next page. Select the When option button and Push F4 to select ‘ = ’ .
7. Push the Set Pulse Width option button. Turn V0 to set the pulse width to the value read out in
Step 3.
8. Turn the TRIGGER LEVEL knob to set the pulse width to the value read out in Step 3.
9. Push the More option button and select Normal for the Mode option. Once t riggering on
normal pulses , the oscilloscope can give a stable waveform display.
10. If the When option is set to > , < or ≠ and there appear any aberrant pulses that meet the
specified condition, the oscilloscope will trigger. For example, the signal contains such
aberrant pulses as shown below, you may select ‘≠’ or ‘ <
’
to trigger on the pulse.
As shown in the above figure, you can get a stable waveform display if inputting a square wave at
the frequency of 1KHz , with pulse width set to 500 μ s .
6.7
6.7
6.7
6.7 Example
Example
Example
Example 7:
7:
7:
7: Triggering
Triggering
Triggering
Triggering on
on
on
on Video
Video
Video
Video Signal
Signal
Signal
Signal
Assume that you are monitoring the video signals of a television to see if they are input normally,
and the video signal is of an NTSC system.
You
can get a stable display by using the video trigger.
Triggering
Triggering
Triggering
Triggering on
on
on
on Video
Video
Video
Video Fields
Fields
Fields
Fields
To
trigger on the video fields, follow the steps below.
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