Acquisition Controls
TDS3000B Serie s User Manual
3-5
Waveform Intensity
The WAVEFORM INTENSITY adjusts the intensity of the
waveforms in the display.
The term Digital Phosphor represents the way this control simulate s
the intensity control of an analog oscilloscope. At maximum
intensity, all waveform points are displayed at full bright ness. As you
decrease the i nte nsity, you can see intensity gra ding in the wave-
forms. The brightest parts of the waveform are the points most
frequently acquired; the dimmer parts represent less frequently
acquired points. All points decay in intensity over time unless the
display persistence is set to infinite.
Use a medium intensity setting to get an analog-oscilloscope view of
time-varying signals and those containing modulation. Use the
maximum intensity setting to view the signals the way most digital
oscilloscopes display them.
You can turn on display persistence to slow or prevent the decay of
the waveform points. With persistence on, you can simulate the
function of an analog storage oscilloscope. See page 3 --23 for more
information about displa y persistence.
NOTE. The waveform intensity may change when you change
oscilloscope acquisition modes or horizontal scale settings. Use the
INTENSITY knob to readjust wavef orm intensity.
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