Atec RohdeSchwarz-SMW200A User Manual

Page 27

Version 01.02, September 2013

Rohde & Schwarz R&S

SMW200A Vector Signal Generator

Baseband filter

Any filter can be used with any type of modulation. The bandwidth of the modulation
signal is max. 50 MHz; the signal is clipped if the bandwidth is exceeded.

Filter types

cosine, root cosine, Gaussian,
cdmaOne, cdmaOne + equalizer,
cdmaOne 705 kHz,
cdmaOne 705 kHz + equalizer,
CDMA2000

3x,

APCO25 C4FM,
EDGE narrow pulse, EDGE wide pulse
rectangular, split phase

Filter parameter

Setting range

cosine, root cosine (filter parameter

α)

0.05 to 1.00

Gaussian (filter parameter B × T)

0.15 to 2.50

split phase (filter parameter B × T)

0.15 to 2.50

Setting resolution

0.01

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), APCO25
(8PSK), PWT, TFTS, INMARSAT, VDL,
EDGE, APCO25(FSK), ICO, CDMA2000

WCDMA

Data sources

PRBS: 9, 11, 15, 16, 20, 21, 23,
All 0, All 1, pattern (length: 1 bit to 64 bit),
data lists

Data lists

Output memory

standard

8 bit to 2 Gbit

with R&S

SMW-K511 option (memory

extension)

8 bit to 16 Gbit

with R&S

SMW-K512 option (memory

extension)

8 bit to 32 Gbit

Nonvolatile memory

hard

disk

Predefined settings

modulation, filter, symbol rate and coding in line with standard

Standards

APCO,

Bluetooth

, DECT, ETC, GSM,

GSM EDGE, NADC, PDC, PHS, TETRA,
WCDMA 3GPP, TD-SCDMA, CDMA2000

Forward, CDMA2000

Reverse,

Worldspace

Frequency offset

With the aid of the frequency offset, the center frequency of the wanted baseband
signal can be shifted. The restrictions caused by the modulation bandwidth still apply.

Frequency offset setting range

–60 MHz to +60 MHz

with R&S

SMW-K522 option

–80 MHz to +80 MHz

Frequency offset setting resolution

0.01 Hz

Frequency offset error

< 7 × 10

–7

Hz + relative deviation of

reference frequency) × frequency offset
(nom.)

Triggering
Trigger source

event triggered via GUI or remote
command

internal

event triggered by other baseband
generator

internal (baseband A/B)

event triggered by external trigger signal

external

Trigger modes

The signal is generated continuously.

auto

The signal is generated continuously. A
trigger event causes a restart.

retrig

The signal is started only when a trigger
event occurs. Subsequent trigger events
are ignored.

armed auto

The signal is started only when a trigger
event occurs. Every subsequent trigger
event causes a restart.

armed retrig

The signal is started only when a trigger
event occurs. The signal is generated
once.

single