![Rohde & Schwarz ESW Series User Manual Download Page 49](http://html.mh-extra.com/html/rohde-and-schwarz/esw-series/esw-series_user-manual_1477816049.webp)
Instrument Tour
R&S
®
ESW
49
User Manual 1177.6298.02 ─ 08
In addition to the rotary knob and the cursor keys, the navigation control also provides
undo / redo functionality.
Rotary knob
The rotary knob allows you to do several things:
●
It increases or decreases any kind of numeric value. In most cases, the rotary knob
changes numeric values with a fixed step size.
Turning it to the right corresponds to an increase, turning it to the left to a decrease
of a numeric value.
●
It works like a cursor key in dialog boxes or lists (for example dropdown menus). In
that case you can navigate to one of the items with the rotary knob. If the dialog
box covers more than one screen page, it also scrolls through the dialog box.
Turning it to the right corresponds to a downward movement. Moving it to the left to
an upward movement.
●
It moves around markers and other graphical elements on the screen. In most
cases, the step size is fix.
●
Pressing the rotary knob has the same effect as pressing the [ENTER] key as it
confirms an entry or selection.
Cursor keys
The cursor keys allow you to do several things:
●
The up and down keys increase or decrease any kind of numeric value if an input
field is active.
The cursor keys change numeric values with a fixed step size.
●
The cursor keys navigate through dialog boxes or lists (for example dropdown
menus).
●
The left and right keys move the cursor in an input field in the corresponding direc-
tion.
●
The up and down keys move markers around.
The step size is fix.
●
The cursor keys allow you to navigate to a cell in a table.
●
The cursor keys move a scroll bar (vertical or horizontal) in dialog boxes that have
one.
Undo and redo functionality
Reverts the software to an older state by erasing the last change you have applied.
The undo function is useful, for example, if you are performing a measurement with
several markers and a limit line and accidentally select a different measurement. In
this case, a lot of settings would be lost. However, if you press [UNDO] immediately
afterwards, the previous status is retrieved.
Reverses an undo action or repeats the most recently performed action.
The Front Panel