Atec Rohde-Schwarz-SMU200A - Manual (Page 26)

Version 08.00, January 2012
26 Rohde & Schwarz R&S ® SMU200A Vector Signal Generator
I/Q baseband generator (R&S
®
SMU-B9/-B10/-B11 option) – realtime operation
At least one R&S ® SMU-B13 baseband main module must be installed. One or two R&S ® SMU-B9/-B10/-B11 options can be installed.
Their I/Q signals can be assigned a frequency offset and/or be added in the digital domain with settable level ratio.
ASK
modulation index 0 % to 100 %
resolution 0.1 %
FSK 2FSK, 4FSK, MSK
deviation 0.1 to 1.5 × f
sym
maximum 10 MHz
resolution < 0.1 Hz
setting uncertainty < 0.5 %
variable FSK 4FSK, 8FSK, 16FSK
deviations –1.5 × f
sym
to +1.5 × f
sym
maximum 10 MHz
resolution < 0.1 Hz
PSK BPSK, QPSK, QPSK 45° offset, OQPSK,
π/4-QPSK, π/2-DBPSK, π/4-DQPSK,
π/8-D8PSK, 8PSK, 8PSK EDGE
Types of modulation
QAM 16QAM, 32QAM, 64QAM, 256QAM,
1024QAM
Coding Not all coding methods can be used with
every type of modulation. off, differential, diff. phase,
diff. + Gray, Gray, GSM, NADC, PDC,
PHS, TETRA, APCO25 (PSK), PWT,
TFTS, INMARSAT, VDL, EDGE,
APCO25(FSK), ICO, CDMA2000
® 6 ,
WCDMA
Any filter can be used with any type of modulation. The bandwidth of the modulation
signal is max. 25 MHz; the signal is clipped if the bandwidth is exceeded.
cosine, root cosine
filter parameter α 0.05 to 1.00
Gaussian
filter parameter B × T 0.15 to 2.50
cdmaOne, cdmaOne + equalizer
cdmaOne 705 kHz,
cdmaOne 705 kHz + equalizer
CDMA2000 ® 3x
APCO25 C4FM
rectangular
split phase
filter parameter B × T 0.15 to 2.5
Baseband filter
resolution of filter parameter 0.01
If an external clock is used, the applied data rate may deviate from the set clock rate by
±2 %. The external clock can be used for internal and external data.
operating mode
internal, external
setting range
ASK, PSK, QAM 400 Hz to 25 MHz
FSK 400 Hz to 15 MHz
resolution 0.001 Hz
frequency uncertainty (internal)
< 5 Ч 10 –14 Ч symbol rate + reference
frequency uncertainty
external clock symbol, K × symbol, bit clock
clock divider K 1 to 64
Symbol rate
external clock rate max. 100 MHz
6 CDMA2000 ® is a registered trademark of the Telecommunications Industry Association (TIA - USA).