Application Exa
mples
5. Select All Lines.
To trigger on a specific line, select Line
Number, and us
e multipurpose knob a to
select the line number.
All Lines
6. Adjust Hori
zontal Scale to see a complete
video line across the screen.
7. Observe the results.
Capturing a Single-Shot Signal
In this example, the reliability of a reed relay in a piece of equipment has been poor, and you need to investigate the problem.
You suspect that the relay contacts arc when the relay opens. The fastest y ou can open and close the relay is about once per
minute
, so you need to capture the voltage across the relay as a single-shot acquisition.
To set up for a single-shot acquisition:
1. Adjust the Vertical Scale and Horizontal Scale to appropriate ranges for the signal you expect to see.
2. Push A
cquire.
3. Push Mode.
4. Select Sample.
176 MSO4000B and DPO 4000B Series Oscilloscopes User Manual
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