Spectrum Analyzer Mode
R&S
®
Cable Rider ZPH
215
User Manual 1321.0950.02 ─ 07
If you set a span of 0 Hz (zero span), the R&S Cable Rider ZPH performs measure-
ments in the time domain.
1. Select the "Span" softkey on the "Parameter view" to define the span.
Alternatively, press the [CAL/SPAN] key.
The R&S Cable Rider ZPH opens an input field to define the span.
2. Enter the span you need.
The R&S Cable Rider ZPH adjusts the span of the horizontal axis.
Special touchscreen gesture
Alternatively, pinch and stretch on the touchscreen to change the span parameter.
See
Chapter 5.1.3, "Change Span "
,
on page 90.
If you have to switch between full span and a smaller span, you can do so without hav-
ing to enter the numeric values.
1. Press the [CAL/SPAN] key.
2. Select the "Full Span" softkey.
The R&S Cable Rider ZPH displays the spectrum over its entire frequency range.
3. Select the "Last Span" softkey.
The R&S Cable Rider ZPH restores the span that you have set just before display-
ing the entire frequency range.
Time domain measurements
You can also activate time domain measurements without having to enter the value
manually. When measuring in the time domain, the span is 0 Hz. In that state, the R&S
Cable Rider ZPH measures the signal at the current center frequency only. Instead of
displaying the spectrum, the R&S Cable Rider ZPH shows the signal power over a cer-
tain time period. The horizontal axis becomes the time axis. The display always starts
at 0 s and stops after the currently set sweep time.
1. Press the [CAL/SPAN] key.
2. Select the "Zero Span" softkey.
The R&S Cable Rider ZPH sets a span of 0 Hz and performs the measurement in
the time domain.
8.2.3
Configuring the Vertical Axis
All relevant settings to configure the vertical axis are available in the amplitude menu.
You can access it via the [AMPT] key.
Configuring Spectrum Measurements
