R&S RTA4000, User Manual

Page: 101 / 861

Waveform analysis
R&S
®
RTA4000
101 User Manual 1335.7898.02 ─ 08
7 Waveform analysis
● Zoom .....................................................................................................................101
● Mathematics ..........................................................................................................105
● Reference waveforms ........................................................................................... 116
● History and segmented memory .......................................................................... 121
● Search ...................................................................................................................130
7.1 Zoom
The zoom magnifies a part of the waveform to view more details. The zoom is applied
to all active analog and digital channels and math waveforms.
The following zoom types are available:
●
Horizontal zoom: the waveforms are displayed with a shorter time scale while the
vertical scale remains unchanged.
●
Vertical zoom: the zoom waveforms are enlarged in vertical and horizontal direc-
tion.
7.1.1 Zooming in
When you activate the zoom, two windows are displayed: the original waveform dia-
gram at the top, and the zoom window at the bottom.
If zoom is active, the time scale of the original waveform diagram is at least 40 ns/div.
When you activate the zoom at a smaller time scale, the instrument changes the time
scale to the minimum value.
► To activate the horizontal zoom, press the [Zoom] key.
► To activate the vertical zoom:
a) Tap the "Zoom" icon on the toolbar.
b) Drag you finger on the screen to draw the diagonal of the zoom area. You can
draw the zoom area on the original waveform, or on an existing zoom wave-
form. A rectangle indicates the zoom area.
Zoom