User manual

Digital Storage Oscilloscope 50
Peak Detect: Use this mode to detect glitches within 10ns and to limit the possibility of
aliasing. This mode is valid at the SEC/DIV setting of 4µs/div or slower. Once you set
the SEC/DIV setting to 4µs/div or faster, the acquisition mode will change to Normal
because the sample rate is fast enough that Peak Detect is unnecessary. The
oscilloscope does not display a message to tell you that the mode has been changed
to Normal.
Average: Use this mode to reduce random or uncorrelated noise in the signal to be
displayed. Acquire data in Normal mode and then average a great number of
waveforms. Choose the number of acquisitions (4, 8, 16, 32, 64 or 128) to average for
the waveform.
Stopping the Acquisition: When you are running the acquisition, the waveform
display is live. Stop the acquisition (press the [Run/Stop] button) to freeze the display.
In either mode, the waveform display can be scaled or positioned by vertical and
horizontal controls.
2.10.1 XY Mode
The XY mode is used to analyze phase differences, such as those represented by
Lissajous patterns. The format plots the voltage on CH1 against the voltage on CH2,
where CH1 is the horizontal axis and CH2 is the vertical axis. The oscilloscope uses
the untriggered Normal acquisition mode and displays data as dots.
The oscilloscope can acquire waveforms in YT mode at any sampling rate. You may
view the same waveform in XY mode. To perform this operation, stop the acquisition
Sample Points
Normal Acquisition Intervals
8
3
7
2
4
5
6
1
9
10
Normal Mode Acquires a Single Sample Point in Each Interval