Signal Processing Toolbox

Making Signal Measurements: Using Markers

You can use the markers on the Signal Browser, the Filter Viewer, or the Spectrum Viewer to make measurements on any of the following:

• A signal in the Signal Browser
• A filter response in the Filter Viewer
• A power spectral density plotted in the Spectrum Viewer

To make a measurement:

1. Select a line to measure (or play, if you are in the Signal Browser).
2. Select one of the marker buttons,
   
   ,
   
   ,
   
   ,
   
   ,
   
   ,
   
   , to apply a marker to the displayed signal.
3. Position a marker in the main display area by grabbing it with your mouse and dragging:
   1. Select a marker setting. If you choose the Vertical, Track, or Slope buttons, you can drag a marker to the right or left. If you choose the Horizontal button, you can drag a marker up or down.
   2. Move the mouse over the marker (1 or 2) that you want to drag.

   The hand cursor with the marker number inside it is displayed when your mouse passes over a marker.

   3. Drag the marker to where you want it on the signal.

As you drag a marker, the bottom of the Signal Browser shows the current position of both markers. Depending on which marker setting you select, some or all of the following fields are displayed: x1, y1, x2, y2, dx, dy, m. These fields are also displayed when you print from the Signal Browser, unless you suppress them.

You can also position a marker by typing its x1 and x2 or y1 and y2 values in the region at the bottom.

Setting Preferences

Reference