140
Peak detect emphasizes noise spikes and glitches in your signal,
especially when the time base is set to a slow setting.
Separating the Signal from Noise
To reduce random noise in the oscilloscope display, follow these
steps:
1. Press the “ACQUIRE” button to display the acquire
menu.
2. Press the “Acquisition” option button or turn the
“Universal” knob to select “Average”.
3. Press the “Averages” option button to see the effects of
varying the number of running averages on the
waveform display.
Averaging reduces random noise and makes it easier to see the
details of a signal.
4.5 Triggering on a Video Signal
Observe the video circuit in a piece of medical equipment and use the
video trigger to obtain a stable display.
Triggering on Video Field
To trigger on the video fields, follow these steps:
1. Press the “TRIGGER MENU” button to see “trigger
menu”
2. Press the top option button and select “Video”.
3. Press the “source” option button and select “CH1”.
4. Press the “Sync” option button and select “Odd Field” or
“Even Field”.
5. Press the “Standard” option button and select “NTSC”.
6. Turn the horizontal “Time/Div” knob to see a complete
field across the screen.
7. Turn the vertical “Volts/Div” knob to ensure that the
entire video signal is visible on the screen.
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