Datasheet

Version 05.00, February 2019
Rohde & Schwarz R&S
®
FPC Spectrum Analyzer 9
Measurement of digital modulation signals (ASK, FSK)
Center frequency
10 MHz to 3 GHz
Demodulation bandwidth
400 Hz to 2 MHz
auto-set corresponding to signal and
demodulation bandwidth requirements
Display
ASK diagram
eye diagram, symbols, modulation depth,
modulation error
ASK numerical results
carrier power, carrier frequency error,
modulation depth and index,
modulation error
FSK diagram
eye diagram, symbols, modulation
deviation, modulation error
FSK numerical results
carrier power, carrier frequency error,
frequency deviation, modulation error,
magnitude error
Demodulation parameters
Modulation and demodulation filters
transmit filter
 root raised cosine (RRC)
 raised cosine (RC)
 Gaussian (GAUSS)
 unfiltered
4
measurement and reference filters
internally adapted to signal parameters
Points/symbol
4, 8, 16
internally adapted to signal parameters
Filter length
internally adapted to signal parameters
Demodulation length
20 symbols to max. 1000 symbols
(at 4 points/symbol)
Data processing
burst on/off
Carrier power
Carrier power measurement accuracy
add 0.2 dB, see section
“Level measurement uncertainty”
Carrier power range
–30 dBm to +20 dBm (nom.)
Display resolution
0.1 dB
ASK demodulation
5
Measurement range
symbol rate
1 kHz to 100 kHz (nom.)
modulation depth
5 % to 95 % (nom.)
Modulation depth uncertainty
±4 % (nom.)
Display resolution
0.1 %
FSK demodulation
6
Measurement range
symbol rate
1 kHz to 100 kHz (nom.)
frequency deviation
1 kHz to 400 kHz (nom.)
symbol rate
1 kHz to 20 kHz
1 ≤ beta
7
≤ 20
> 20 kHz to 50 kHz
1 ≤ beta ≤ 8
> 50 kHz to 100 kHz
1 ≤ beta ≤ 4
Accuracy
±4 % (nom.)
Display resolution
0.1 Hz
4
Reference signal is generated with a Gauss filter, BT = 3.
5
ASK modulation index 50 %, symbol rate = 100 kHz, Gauss BT = 1.0, modulation signal PSBS.
6
FSK modulation deviation 100 kHz, symbol rate = 100 kHz, Gauss BT = 1.0, modulation signal PRBS.
7
Beta is the ratio of frequency deviation to symbol rate.