Application Examples
In the next figur
e, notice the component at 31 MHz (figure label 1). This coincides
with a 31 MHz memory strobe signal in the example system. There is als o a
frequency component at 62 MHz (label 2), which is the second harmonic of the
strobe signal.
Triggering on a Video Signal
You are testing the video circuit in a piece of medical equipment and need to
display the video output signal. The video output is an NTSC standard signal. Use
the video trigger to obtain a stable display.
To trigger on the video fields, follow these steps:
1. Push the Trigger Menu button.
2. Push the Type screen button to select Video.
3. Push the Standard screen button to select 525/NTSC.
4. Push the Trigger On screen button.
5. Select Odd.
6. Adjust the horizontal Scale to see a complete field across the screen.
7. Push the Acquire Menu button.
TDS3000C Series Oscilloscope User Manual 41
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