SWEEPLESS SWEEP (Optional Purchase Required)

The following topics explain the user functions available within the Reverse Sweep mode.

Softkeys

Three softkeys on the SWEEPLESS SWEEP screen provide the following options:

FILE
Save Reference…

Saves the current measurement as a reference file.
Save File…

Saves the current measurement as a static measurement file. NOTE: When a saved static measurement file is opened, the graph will be one similar to the live measurement graph.

TIP:
To assure exact measurement recording of current display, always pause (SHIFT 8) measurement updates before saving or printing a measurement file.

Load Reference…

Proceeds to a work folder associated with reverse sweep reference files. Select a desired reference file. If the file selected is not compatible with the current received sweep plan, a message will alert the user. NOTE: This feature allows you to display the difference of the live data and the data stored in the file.

When a reference file has been chosen for display, the name of the reference file appears in the subtitle bar in place of ‘REF: NONE’. The maximum length of the file name is 12 characters. When an additional file is saved, the file name field in the “save a file” display will contain the last label saved. This label may be appended, altered, cleared or simply saved unchanged. If saved unchanged, an “overwrite?” warning will be displayed that must be acknowledged.

NOTE:
Since a reference file is essentially an average of the data obtained from four previous sweeps, enough traces need to accumulate before a file can be saved and used as a reference file. Thus, when the forward sweep screen is accessed for the first time, the subtitle bar initially displays a cross in place of the reference file name. Once enough traces have accumulated “REF: NONE” or the current reference file label is displayed.

Load File…

Loads a file as a static measurement file.
Clear Reference

Removes reference file from measurement and returns the subtitle bar to “REF: NONE”.

VIEW

Several viewing options are available to assist you with data assessment. Press the VIEW softkey. Use the arrow keys to choose the menu item you prefer and press ENTER to make your selection.

Select Auto Reference to automatically view measurement results in the best reference setting on the graph (Keystroke shortcut: SHIFT 9). NOTE: For best reference setting results you may have to select the Auto Reference button more than once (up to three times).

Select 1 dB/div, 2 dB/div, 5 dB/div, or 10 dB/div to adjust the vertical resolution of the graph for the best viewing.


Select (or deselect) Zoom to turn on and off graph magnification. When selected, the Zoom feature produces a display that has a frequency span that is defined by the position of the markers in the original non-zoomed view.

Select Pause to suspend measurement updates (Keystroke shortcut: SHIFT 8).

Use the arrow keys to select Marker A or Marker B as the active marker, then press ENTER. Use the Left and Right Arrows to move the marker.

SETTINGS
Show Audio

Provides the option to enable/disable the viewing of audio points.

Test Point Comp…
Proceeds to the test point compensation configuration screen.
Changes are made and stored within the DSAM Configuration mode..

Sweep Tilt and Limit …

Proceeds to the sweep settings screen.
Changes are made and stored within the DSAM Configuration mode.