Acquiring and Displaying Waveforms
TDS 500D, TDS 600B, & TDS 700D User Manual
3–71
Time difference
between the
reference and
position frames
Trigger time of the
Reference Frame
Trigger time of the
Position Frame
Figure 3–35: FastFrame TimeStamp
Consider the following operating characteristics when using FastFrame:
Envelope, Average, and Hi Res form the envelope or average following the
last frame of the concatenated record. For example, if Average or Hi Res
acquisition modes are selected and the frame count is 10, segments 1 through
10 will show Sample or Hi Res frames, and frame 11 will show the average
of frames 1 through 10. If there is not room for one additional frame, the
envelope or average of the frames replaces the display of the last acquired
frame. Average and envelope counts have no affect in FastFrame.
You can press RUN/STOP to terminate a FastFrame sequence. If any frames
were acquired, they are displayed. If no frames were acquired, the previous
FastFrame waveform is displayed.
Because FastFrame waveforms contain many triggers, trigger position
indicators are removed from both the waveform and the record view when
the selected channel, reference, or math waveform is a FastFrame waveform.
In Equivalent Time, the oscilloscope ignores FastFrame mode.
FastFrame Operating
Characteristics
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