The X-Y mode plots one voltage against another, providing a distinctive graphical display that can highlight different aspects of the signal relationship.

In XY mode, channel 1 (or 3) is the X-axis input and channel 2 (or 4) is the Y-axis input.

To adjust the X axis scale and position, first select channel 1 (or 3) using the CH SEL button. The left knob will change the scale and the right knob will change the position.

To adjust the Y axis scale and position, first select channel 2 (or 4) using the CH SEL button. The left knob will change the scale and the right knob will change the position.

The status bar will indicate the the functions of the knobs and the selected channel.

When all 4 channels are enabled, QUADSCOPE will display two separate XY plots. In non-split screen mode, they will use the same horizontal scale and can be shown either in stacked layout mode or overlaid layout mode (the layout mode can be changed via the ADJUST button). In split screen mode, each plot can use a different horizontal scale - this is also known as dual timebase mode.

TIP. XY mode will work best when the horizontal scale is set such that one full cycle fills the (oscilloscope) screen. To achieve this, select the oscilloscope function and adjust the horizontal scale using the right knob. Then switch back to the XY function (TIP 2: Pressing the right knob and then the window button will switch back to the previous function without you having to dive into the menus).

Some fun things to try:

• SINE waves on the first and second channels with their frequencies 1Hz apart.

• SINE waves on the first and second channels with the second channel frequency an integer multiple of the first or vice versa (e.g. 440Hz and 880Hz)

• As above but also with the buffered output of CH1 connected to CH4 and the buffered output of CH2 connected to CH3. Can be used with either the stacked or overlaid layout modes and in single-screen and split-screen modes.