SMW200A_specs_en_3606-8037-22_v2700.pdf - 第69页

Version 27.00, October 2024 Rohde & Schwar z R&S ® SMW200A Vec tor Signal Generator 69 Bandwidth extension ( R&S ® SMW -K555 option) The R&S ® SMW-K555 op tion require s two R&S ® SMW-B9 wide band bas…

Version 27.00, October 2024

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

Version 27.00, October 2024

70 Rohde & Schwarz R&S

SMW200A Vector Signal Generator

BER measurement (R&S

SMW-K80 option)

At least one R&S

SMW-B10 standard baseband generator option or R&S

SMW-B9 wideband baseband generator option must be

installed.

The data supplied by the DUT is compared with a reference pseudo-random bit sequence.

Clock

supplied by DUT; a clock pulse is required

for each valid bit

Clock rate

100 Hz to 100 MHz

Data

PRBS

sequence length

9, 11, 15, 16, 20, 21, 23

pattern ignore

off, All 0, All 1

data enable

external

modes

off, high, low

restart

external

modes

on/off

Synchronization time

28 clock cycles

Interface

4 BNC connectors, selectable from USER 1 to 6

Clock, data, enable and restart inputs

input impedance

1 kΩ, 50 Ω

trigger threshold

setting range

0.1 V to 2.0 V

setting resolution

0.1 V

Polarity

data, clock, data enable

normal, inverted

Measurement time

selectable by means of maximum number

of data bits or bit errors (max. 2

bit

each), continuous measurement

Measurement result

if selected number of data bits or bit errors

is attained

BER in ppm, % or decade values

Status displays

not synchronized, no clock, no data

BLER measurement (R&S

SMW-K80 option)

At least one R&S

SMW-B10 standard baseband generator option or R&S

SMW-B9 wideband baseband generator option must be

installed.

In BLER measurement mode, arbitrary data can be provided by the DUT. A signal marking the block’s CRC has to be provided on the

data enable connector of the BER/BLER option.

Clock

supplied by DUT; a clock pulse is required

for each valid bit

Clock rate

100 Hz to 100 MHz

Data

input data

arbitrary

data enable (marking the block’s CRC)

external

modes

high, low

CRC

CRC type

CCITT CRC16 (x

+ x

+ 1)

CRC bit order

MSB first, LSB first

Synchronization time

1 block

Interface

4 BNC connectors, selectable from USER 1 to 6

Clock, data, and enable inputs

input impedance

1 kΩ, 50 Ω

trigger threshold

setting range

0.1 V to 2.0 V

setting resolution

0.1 V

Polarity

data, clock, data enable

normal, inverted

Measurement time

selectable by means of maximum number of received blocks or errors (max. 2

blocks

each), continuous measurement

Measurement result

if selected number of received blocks or

errors is attained

BLER in ppm, % or decade values

Status displays

not synchronized, no clock, no data