Operating the Instrument
R&S
®
FSW
107Getting Started 1338.4102.02 ─ 08
●
Dragging vertically in a power vs frequency (spectrum) or power vs. time dis-
play changes the reference level (for absolute scaling) or the min and max
power values (for relative scaling).
●
Dragging horizontally in a time domain display changes the trigger offset value
(if available, not in free run).
●
Spreading or pinching a spectrum display changes the center frequency and
span (horizontal) or reference level and range (vertical), or a combination of
these settings (diagonal).
●
Spreading or pinching a time domain display changes the sweep time and
trigger offset (horizontal) or reference level position and range (vertical), or a
combination of these settings (diagonal).
You can prevent the firmware from changing specific settings using the options in
the context menu for the measurement zoom icon. By default, the reference level
is locked and thus not changed automatically due to touch gestures.
(See Chapter 7.2.1, "Toolbar", on page 95 and the R&S FSW User Manual).
Mouse vs. touch actions
Any user interface elements that react to actions by a mouse pointer also react to
finger gestures on the screen, and vice versa. The following touch actions corre-
spond to mouse actions:
Table 7-6: Correlation of mouse and touch actions
Mouse operation Touch operation
Click Tap
Double-click Double-tap
Click and hold Touch and hold
Right-click Touch, hold for 1 second and release
Touchscreen Gestures
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