Modulation Analysis
R&S
®
Cable Rider ZPH
291
User Manual 1321.0950.02 ─ 07
Continuously Modulated Signals"
,
on page 168 and
Chapter 8.2, "Configuring Spec-
trum Measurements"
,
on page 210.
1. Press the [FREQ/DIST] key.
2. Select the "Center Freq" softkey.
The R&S Cable Rider ZPH opens an input field to define the center frequency
input.
12.2.3
Amplitude Configuration
For more information on the amplitude configuration, see
Chapter 8.2.3, "Configuring
the Vertical Axis"
,
on page 215.
Defining the position of the reference for ASK signals
In the graphical result displays, the reference position on the y-axis can be adjusted to
see the signal in greater details. By default, the maximum reference position is set to
100%.
1. Press [AMPT] key.
The R&S Cable Rider ZPH opens the amplitude menu.
2. Select the "Ref Position" menu item.
The R&S Cable Rider ZPH opens an input field to define the reference position in
term of percentage.
3. Enter the required value.
The R&S Cable Rider ZPH adjusts the y-axis and the position of the trace accord-
ingly.
Adjusting the display range for ASK and FSK signals
The R&S Cable Rider ZPH display range is divided into 10 grid sections, you can
define the deviation per grid section.
1. Press [AMPT] key.
The R&S Cable Rider ZPH opens the amplitude menu.
2. Select the "Deviation Per Division" menu item.
The R&S Cable Rider ZPH opens an input field to define the deviation.
3. Enter the required deviation.
The R&S Cable Rider ZPH adjusts the scale of the y-axis accordingly.
12.2.4
Sweep and Trigger Configuration
The sweep and trigger menu provides settings to control the measurement and the
way data is captured.
Digital Demodulation
