Modulation Analysis
R&S
®
Cable Rider ZPH
281
User Manual 1321.0950.02 ─ 07
–
Modulation Trace
Measurement is performed and displayed in the trace window.
–
Modulation Summary
Measurement is performed and displayed in the summary window.
1. Press [MEAS] key.
The R&S Cable Rider ZPH opens the analog modulation menu.
2. Select the analog modulation domain you require ("AM Domain" or "FM Domain")
and the required measurement setting ("Mod. Trace" or "Mod. Summary") softkey
to perform the measurement.
See index 9 of
Figure 12-1
.
12.1.3.2
Defining the Horizontal Axis
The frequency defines the carrier frequency of the modulated signals.
Carrier Frequency
For more information, see
Chapter 8.2.2.1, "Defining the Center Frequency"
,
on page 212.
Carrier Frequency Step Size
For more information, see
Chapter 8.2.2.2, "Defining a Frequency Step Size"
,
on page 213.
12.1.3.3
Defining the Vertical Axis
Reference Level
For more information, see
Chapter 8.2.3.1, "Setting the Reference Level"
,
on page 216.
Modulation Depth
The vertical axis of the AM Domain displays the modulation depth of the amplitude
modulated signal.
1. Press [MEAS] key.
2. Select the "AM Domain" softkey
3. Press [SCALE/AMPT] key
4. Select the "Dev per Division".
A drop-down menu to select the step interval on the modulation depth opens.
5. Select the step interval on the modulation depth you require.
Analog Demodulation
