Modulation Analysis
R&S
®
Cable Rider ZPH
285
User Manual 1321.0950.02 ─ 07
Figure 12-3: Eye diagram of an ASK modulated signal
1 = Operating mode domain
2 =
ASK or FSK modulated parameters
3 = External reference signal
4 = Trace diagram displaying the selected display mode in ASK or FSK modulation domain
5 =
Parameter View
6 =
Configuration Overview
Table 12-4: ASK and FSK modulation parameters
Label
Description
Frequency Deviation
Frequency deviations between the measured signal
and reference signal.
Carrier Frequency Drift
Drift in the carrier frequency of the measured signal.
Magnitude Error
Difference between the measured magnitude and
the magnitude of the reference signal.
Modulation Index
See modulation depth in
Table 12-5
.
Carrier Power
Measured carrier power signal.
Modulation Error
Modulation deviation between measured signal and
reference signal.
Modulation Depth
See modulation depth in
Table 12-5
.
Carrier Frequency Error
Mean carrier frequency offset in Hz.
1. Press [MODE] key.
The R&S Cable Rider ZPH opens the mode menu.
2. Select the "Digital Demod" softkey.
The R&S Cable Rider ZPH activates the mode for digital demodulation.
3. Press the [MEAS] key.
The R&S Cable Rider ZPH opens the digital demodulation measurement menu.
Digital Demodulation
