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21
: Pulse Width trigger, negative polarity.
13.
Pop-up Prompt
14.
Readout tells trigger level.
15.
Icon indicates whether the waveform is inverted or not.
16.
20M Bandwidth Limit. If this icon lights up, it means the bandwidth limit is enabled, otherwise disabled.
17.
Icon indicates channel coupling.
18.
Channel Marker
19.
Window displays waveform.
5.1.1
XY Format
The XY format 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 sampling rate is fixed
at 1 MS/s.
The oscilloscope can acquire waveforms in YT format at any sampling rate. You may view the same waveform in XY
format. To perform this operation, stop the acquisition and change the display format to XY.
The table below shows how to operate some controls in XY format.
Controls
Usable or not in XY format
CH1 VOLTS/DIV and VERTICAL POSITION controls
Set the horizontal scale and position
CH2 VOLTS/DIV and VERTICAL POSITION controls
Continuously set the vertical scale and position
Reference or Math
Unusable
Cursors
Unusable
Autoset (display format reset to YT)
Unusable
Time base controls
Unusable
Trigger controls
Unusable
5.2
Horizontal System
Use the horizontal controls to change the horizontal scale and position of waveforms. The horizontal position readout
shows the time represented by the center of the screen, using the trigger time as zero. When you change the
horizontal scale, the waveform will expand or contract to the screen center. The readout near the upper right of the
screen shows the current horizontal position in second. M represents ‘Main Time Base’, and W indicates ‘Window
Time Base’. The oscilloscope also has an arrow icon at the top of the graticule to indicate the horizontal position.