Rohde & Schwarz R&S SMW200A - Page 289

Configuring the Internal Baseband Source
R&S
®
SMW200A
289User Manual 1175.6632.02 ─ 30
Parameter Value
"Standard" "GSM"
"Symbol Rate" "270.833 ksymb/s"
"Coding" "GSM"
"Modulation Type" "MSK"
"Filter" "Gauss (FSK)"
Filter parameter "B*T" "0.3"
Trigger "Mode > Auto", "Source > Internal"
Clock "Source > Internal"
"Power Ramp Control" settings:
"Attenuation" "15.0 dB"
"Ramp Time" "1.00 sym"
"Ramp Function" "Cosine"
"Rise Delay" "0.00 sym"
"Fall Delay" "0.00 sym"
"Source" "Internal"
"State" "Off"
Table 5-12: Communication standards with their predefined settings
Standard Modulation Symbol rate Filter Coding Parameter for SCPI
command
CW in Baseband BPSK 1 Msym/s Gauss, B*T = 0.5 Off
CWBPsk
APCO Phase1
C4FM
4FSK Deviation 1.8
kHz
4.8 ksym/s APCO25, roll off = 0.2 APCO25(FSK)
APCOPH1C4fm
APCO Phase1
CQPSK
pi/4-DQPSK 4.8 ksym/s Cosine, roll off = 0.2, BW
= 4.8 kHz
APCO25(PSK)
APCOPH1CQpsk
APCO Phase2 H-
CPM
4FSK, Deviation 3
kHz
6 ksym/s APCO25 (H-CPM) APCO25(FSK)
APCOPH2HCpm
APCO Phase2 H-
DQPSK
pi/4-DQPSK 6 ksym/s Cosine, roll off = 1, BW =
7.2 kHz
APCO25(PSK)
APCOPH2HDQpsk
APCO Phase2 H-
D8PSK Wide
pi/8-D8PSK 4 ksym/s Cosine, roll off = 1, BW =
7.2 kHz
APCO25(8PSK)
APCOPH2HD8PSKW
APCO Phase2 H-
D8PSK Narrow
pi/8-D8PSK 4 ksym/s Cosine, roll off = 1, BW =
5 kHz
APCO25(8PSK)
APCOPH2HD8PSKN
APCO Phase1
LSM
pi/4-DQPSK 4.8 ksym/s APCO25 (LSM), Gauss
Cut Off = 2.04 kHz, Low-
pass Cut Off = 6.2 kHz
APCO25(PSK)
APCOPH1Lsm
APCO Phase1
WCQPSK
pi/4-DQPSK 4.8 ksym/s Cosine, roll off = 1, BW =
7.2 kHz
APCO25(PSK)
APCOPH1Wcqpsk
Generating Custom Digital Modulated Signals