SMW200A_specs_en_3606-8037-22_v2700.pdf - 第68页

Version 27.00, October 2024 68 Rohde & Schwar z R&S ® SMW200A Vec tor Signal Generator Crest factor reduction ( R&S ® SMW -K54 8 option) Each R&S ® SMW-K548 op tion require s a standard baseban d generato…

Version 27.00, October 2024

Rohde & Schwarz R&S

SMW200A Vector Signal Generator 67

Digital Doherty (R&S

SMW-K546 option)

The Digital Doherty option only applies to instruments equipped with two RF paths and two baseband generators. Two

R&S

SMW-K541 options and the R&S

SMW-B90 option (phase coherence) must be installed as prerequisite.

State

on/off

Maximum input power (PEP

max.)

Setting range

–145.00 dB to +30.00 dB

Setting resolution

0.01 dB

Shaping

polynomial, from table, classic Doherty

User-defined frequency response correction (R&S

SMW-K544 option)

This option can be installed once if the instrument is equipped with the R&S

SMW-B13 option. If the instrument is equipped with the

R&S

SMW-B13T or R&S

SMW-B13XT option, user-defined frequency response correction can be used either on signal path A or B

with one R&S

SMW-K544 option. For user-defined frequency response correction to be used on signal paths A and B simultaneously,

two R&S

SMW-K544 must be installed.

State

on/off

Scattering parameters

File format

*.s<n>p (e.g. *.s2p)

Maximum number of points

16384

Number of cascadable datasets

up to 10

Additional frequency response

File format

*.fres, *.ucor

Number of files

up to 5

Absolute level correction at center

frequency

based on S-parameter data

on/off

Minimum compensation bandwidth

with R&S

SMW-B13/-B13T options

8 MHz

with R&S

SMW-B13XT option

100 MHz

Automated RF port alignment (R&S

SMW-K545 option)

Instruments with wideband baseband (R&S

SMW-B13XT):

For each installed RF path, R&S

SMW-B9, R&S

SMW-K61 and R&S

SMW-K544 must be installed as prerequisite. Furthermore, the

instrument must be equipped with the R&S

SMW-B90 option.

Instruments with standard baseband (R&S

SMW-B13/-B13T):

For each installed RF path, R&S

SMW-B10, R&S

SMW-K61 and R&S

SMW-K544 must be installed as prerequisite. Furthermore, the

instrument must be equipped with the R&S

SMW-B90 option.

The option cannot be installed if an R&S

SMW-B1044O, R&S

SMW-B2044O, R&S

SMW-B1056O or R&S

SMW-B1067O option

is installed.

To run this option a setup should be defined and generated using the R&S

RFPAL software. At least two signal paths should be

provided. In case of a setup with multiple instruments, an instrument is designated as primary instrument and should be used to

control the option.

State

on/off

Align

aligned, not aligned

Setup file

setup file including alignment data is

generated by R&S

RFPAL

*.rfsa

Additional S-parameter files

File format

*.s<n>p (e.g. *.s2p)

Maximum number of points

16384

Number of cascadable datasets

recommended ≤ 2

up to 10

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68 Rohde & Schwarz R&S

SMW200A Vector Signal Generator

Crest factor reduction (R&S

SMW-K548 option)

Each R&S

SMW-K548 option requires a standard baseband generator (R&S

SMW-B10 option) or a wideband baseband generator

(R&S

SMW-B9 option). If two baseband generators are installed, crest factor reduction can be applied either on path A or B with one

R&S

SMW-K548 option. For crest factor reduction to be applied on paths A and B simultaneously, two R&S

SMW-K548 must be

installed.

Crest factor reduction can be applied to any waveform loaded in the arbitrary waveform generator.

State

on/off

Algorithm

clipping and filtering

Desired crest factor delta

–20 dB to 0 dB

Maximum iterations

1 to 10

Filter mode “simple”

Signal bandwidth

0 Hz to input file sample rate

Channel spacing

0 Hz to input file sample rate

Filter mode “enhanced”

Passband frequency

0 Hz to ½ of input file sample rate

Stopband frequency

0 Hz to ½ of input file sample rate

Maximum filter order

21 to 300

Slow I/Q (R&S

SMW-K551 option)

In slow I/Q mode, the generated signal’s clock rate can be reduced (e.g. a 20 MHz LTE signal is generated with a clock rate of

240 kHz instead of the original 30.72 MHz). This feature can be used to run tests on hardware emulation platforms not yet capable of

full-speed signal processing. The signal and fading characteristics are comparable to those of a system running at full speed. The

actual clock rate of the generated signal is controlled by the device connected to the digital I/Q output connectors of the

R&S

SMW200A.

R&S

SMW-K551 on instruments with wideband baseband (R&S

SMW-B9, R&S

SMW-B13XT)

At least one R&S

SMW-B9 wideband baseband generator option and one R&S

SMW-K19 digital baseband output for wideband

baseband option must be installed.

Note:

Only available for system configuration mode: advanced and signal outputs: digital only (HS).

All digital I/Q outputs need to run at the same clock rate.

The minimum clock rate is limited by the external controlling device only.

The R&S

SMW200A can handle varying clock rates.

With activated slow I/Q mode, marker signals are only available via the digital I/Q interface, and not via USER or T/M/C connectors.

With activated slow I/Q mode, no digital baseband inputs are available.

R&S

SMW-K551 on instruments with standard baseband (R&S

SMW-B10, R&S

SMW-B13/-B13T)

At least one R&S

SMW-B10 standard baseband generator option and one R&S

SMW-K18 digital baseband output option must be

installed.

Note:

All digital I/Q outputs need to run at the same clock rate.

The minimum clock rate is limited by the external controlling device only.

The R&S

SMW200A can handle varying clock rates.

In digital only/digital only multiplexed mode, marker signals are only available via the digital I/Q interface, and not via USER or T/M/C

connectors.

In digital only/digital only multiplexed mode with activated slow I/Q, no digital baseband inputs are available.

Version 27.00, October 2024

Rohde & Schwarz R&S

SMW200A Vector Signal Generator 69

Bandwidth extension (R&S

SMW-K555 option)

The R&S

SMW-K555 option requires two R&S

SMW-B9 wideband baseband generator options and two R&S

SMW-K527 baseband

extension to 2 GHz RF bandwidth options. Single and dual unit operation is supported.

Bandwidth extension enhances the usable clock rate of the arbitrary waveform generator up to 4.8 GHz and can be used with any

waveform loaded int the arbitrary waveform generator. To run this option, an external power combiner and a measurement device is

needed. The measurement device can be either an analyzer or a power meter.

Supported standards and modulation

systems

with R&S

SMW-B9 option – arbitrary

waveform mode

ARB

with R&S

SMW-K414 option

OFDM

with R&S

SMW-K261 option

multicarrier CW

with R&S

SMW-K477 option

IEEE 802.11ay

State

on, off

Setup file

setup file including alignment data is

generated by bandwidth extension option

*.bwsa

Clock rate

200 MHz to 4.8 GHz

Bandwidth

up to 4 GHz

Waveform sample length

513 sample to 256 Msample

with R&S

SMW-K515 option

513 sample to 2 Gsample

Linearize RF (R&S

SMW-K575 option)

The R&S

SMW-K575 option requires at least one R&S

SMW-B10 standard baseband generator or R&S

SMW-B9 wideband

baseband generator.

Linearize RF improves the EVM and ACLR performance for high output powers over the whole RF frequency range of the device.

State

auto/off

Notched signals (R&S

SMW-K811 option)

At least one R&S

SMW-B10 standard baseband generator option or R&S

SMW-B9 wideband baseband generator option must be

installed. If two baseband generators are installed, notched signals can be generated either on path A or B with one R&S

SMW-K811

option. For notched signals to be generated on paths A and B simultaneously, two R&S

SMW-K811 must be installed.

Up to 25 band-stop filters can be applied to the baseband signal.

Center frequency and bandwidth can be set independently for each band-stop filter.

Supported standards and modulation

systems

with R&S

SMW-B9 or R&S

SMW-B10

option – arbitrary waveform mode

ARB

with R&S

SMW-K55 option

LTE

with R&S

SMW-K115 option

cellular IoT

with R&S

SMW-K114 option

custom OFDM

with R&S

SMW-K130 or

R&S

SMW-K355 option

OneWeb

with R&S

SMW-K52 option

DVB-H/DVB-T

with R&S

SMW-K116 option

DVB-S2/DVB-S2X

Number of notches

1 to 25

Notch width

0 Hz to 0.1 · clock frequency

Notch center frequency

–0.5 · clock frequency to +0.5 · clock

frequency

Customized digital input (R&S

SMW-K556 option)

With the R&S

SMW-K556 option, I/Q data from an existing hardware can be fed into the BBIN HS DIG I/Q inputs. This option can be

installed once or twice. Each R&S

SMW-K556 option to be installed requires a R&S

SMW-B9 wideband baseband generator option.

The existing hardware requires a Xilinx Virtex FPGA and the corresponding Rohde & Schwarz IP core.

Interface

Technical specifications

HS DIG I/Q interface input parameters

see section Digital baseband

inputs/outputs for wideband baseband

Interface parameters

Connector

HS DIG I/Q 1 and HS DIG I/Q 2 on rear

panel

QSFP+

Protocol

R&S

Digital I/Q Interface HS

Data rate

50 Gbit/s

sample rate up to 1.25 GHz