Rohde & Schwarz SME02 - GFSK Modulation (Option SME-B11); Spectrum

SME Test Procedure
1038.6002.02 5.29 E-13
5.2.33 GFSK Modulation (Option SME-B11)
5.2.33.1 Spectrum
Operating Mode internal
Test equipment - Spectrum analyzer (Section 5.1, item 2)
- D.c. voltage source (Section 5.1, item 12)
- Pulse generator (Section 5.1, item 17)
Test setup Connect spectrum analyzer to the RF output of the SME.
Measurement À Settings at the SME
- Carrier frequency 945 MHz,
- Level 0 dBm,
in menu DIGITAL MOD/GFSK
- SOURCE PRBS
- PRBS 23 bit
- SELECT STANDARD DECT
À Settings at the analyzer
- Reference level 0 dBm,
- Span 5 MHz
- Center frequency 945 MHz,
- Resolution bandwidth 30 kHz,
- Video bandwidth 30 Hz.
A spectrum according to Fig. 5-1 must be visible at the spectrum
analyzer.
[dBm]
0
-50
-100
934 944 945 946 947 [MHz]
Fig. 5-1 Spectrum with GFSK