Digital Demodulation
R&S
®
FPC
166
User Manual 1178.4130.02 ─ 07
a = Minimum required signal level
b = Time between bursts
1 = No burst, because signal level increase is not enough
2 = No burst, because burst is too short
3 = No burst, because signal level increase occurs too soon after the last event
4 = Burst, because signal level is high enough, burst is long enough and time between bursts was large
enough
When a burst was found, the R&S
FPC tries to demodulate the signal based on the
demodulation parameters you have set and displays the results.
1. Press the "Meas" key to open the measurement menu.
2. Select the "Demod Parameters" menu item to open the demodulation menu.
3. Select the "Burst Processing" menu item.
The R&S
FPC looks for probable bursts in the capture buffer and demodulates the
signal.
Selecting a standard
For FSK measurements, you can select one of several predefined standards.
Selecting one of those standards automatically configures various measurement
parameters that comply to that standard: The
and
(filter type and roll-off factor).
Manual configuration of those parameters is thus not necessary.
1. Press the "Meas" key to open the measurement menu.
2. Select the "Standard" menu item to open the standards menu.
3. Select one of the following menu items.
● "Bluetooth LE": For measurements on bluetooth low energy devices.
● "Tire Pressure": For measurements on devices that check the tire pressure of
cars.
● "Off": For measurements on other signals.
17.3
Frequency Configuration
Access
: "Freq"
Access
: "Setup" > "Config Overview" > "Frequency" (selected settings)
Remote commands to configure the frequency:
●
The R&S
FPC can demodulate a signal only if the frequency of the carrier signal is
known. Therefore, you have to define the frequency of the carrier signal, before any
useful information about the signal is shown in the application.
Frequency Configuration
