Rohde & Schwarz R&S FSP Series, Operating Manual

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Operating Manual 1164.4556.12 - 06 2.25
R&S FSP Getting Started
Measurements on Modulated Signals
Fig. 2-2 Measuring the AF signal from a 1 kHz AM carrier
If the R&S FSP is equipped with the AM/FM Demodulator option (R&S FSP-
B3), the AF can be monitored on the built-in loudspeaker.
5. Switch on the internal AM demodulator
➢
Press the MKR FCTN key.
➢
Press the MKR DEMOD softkey.
The R&S FSP switches the AM demodulator on automatically.
➢
Turn up volume control.
A 1 kHz tone is output by the built-in loudspeaker.
2.5.1.2 Measurement Example 2 – Measuring the modulation depth of an AM carrier in
the frequency domain
Test setup:
Settings on the signal generator (e.g. R&S SMIQ):
Measurement with the R&S FSP:
1. Set the R&S FSP to its default state
➢
Press the PRESET key.
The R&S FSP is in its default state.
2. Set the center frequency to 100 MHz and the span to 0 kHz
➢
Press the FREQ key and enter 100 MHz .
Frequency: 100 MHz
Level: -30 dBm
Modulation: 50 % AM, 1 kHz AF
Signal
generator
FSP