SMW200A_specs_en_3606-8037-22_v2700.pdf - 第63页

Version 27.00, October 2024 Rohde & Schwar z R&S ® SMW200A Vec tor Signal Generator 63 Mandatory extra 40G QSFP+ to 10G SFP+ adapter converter module Recommended extras • 10G SFP+ opti cal cable • 10G SFP+ Ethern…

Version 27.00, October 2024

62 Rohde & Schwarz R&S

SMW200A Vector Signal Generator

Agile sequencing (R&S

SMW-K506 option)

Agile sequencing allows external control and fast arbitrary switching of prestored ARB segments by streaming of ARB descriptor

words (ADW) including a waveform ID to the R&S

SMW200A. The R&S

SMW-K506 option enhances the R&S

SMW-B9 wideband

baseband generator option by adding ADW streaming via a dedicated, low latency 10 Gbit/s LAN interface over an existing QSFP+

interface.

In addition to ARB segment sequencing, the interface provides agile switching of frequency, phase and amplitude. These variations

are applied in real time.

At least one R&S

SMW-B9 wideband baseband generator option must be installed. If two R&S

SMW-B9 options are installed (signal

paths A and B), the agile sequencing can be used either on signal path A or B with one R&S

SMW-K506 option. For simultaneous

usage on signal paths A and B, two R&S

SMW-K506 options must be installed.

ADW parameters

ADW format

Size

32 byte fixed length

Controllable parameters

frequency offset, amplitude offset, phase

offset, waveform ID, segment repetitions,

segment interrupt

Setting granularity

Amplitude offset

16 bit (voltage based)

Phase offset

< 0.01°

Frequency offset

0.58 Hz

ARB segments

Maximum individual segments

16 777 216

Length granularity

32 samples

Time parameters

Minimum ARB segment playback

repetition interval

1.0 µs

Operating modes

Deterministic

ADW execution on external trigger event

Trigger to RF delay

depends on ARB sample rate

sample rate = 37.5 MHz

5.6 µs (meas.)

sample rate = 75 MHz

4.1 µs (meas.)

sample rate = 300 MHz

3.4 µs (meas.)

sample rate = 2.4 GHz

3.1 µs (meas.)

Trigger jitter

±1.67 ns

ARB segment repetitions

looping of ARB segments

1 to 2

Instant

instant ADW execution after reception

ADW reception to RF delay

depends on ARB sample rate

sample rate = 37.5 MHz

7.3 µs (meas.)

sample rate = 75 MHz

5.5 µs (meas.)

sample rate = 300 MHz

4.7 µs (meas.)

sample rate = 2.4 GHz

4.3 µs (meas.)

ARB segment repetitions

looping of ARB segments

1 to 2

Marker signals

Number of marker signals

Operating modes

pulse, restart, ADW

Marker outputs

see section Wideband baseband

generator (R&S

SMW-B9 option) –

arbitrary waveform mode

Marker delay

see section Wideband baseband

generator (R&S

SMW-B9 option) –

arbitrary waveform mode

Interface parameters

LAN interface

Connector

HS/DIGIQ 1, 2 on rear panel

QSFP+ (note the extras below)

Protocol

UDP over Ethernet

Data rate

10 Gbit/s

Trigger input connector

see section Wideband baseband

generator (R&S

SMW-B9 option) –

arbitrary waveform mode

Ready for trigger output connector

see section Wideband baseband

generator (R&S

SMW-B9 option) –

arbitrary waveform mode

Internal ADW buffer

Size

512 ADWs

Version 27.00, October 2024

Rohde & Schwarz R&S

SMW200A Vector Signal Generator 63

Mandatory extra

40G QSFP+ to 10G SFP+ adapter

converter module

Recommended extras

• 10G SFP+ optical cable

• 10G SFP+ Ethernet network interface

card

Wideband baseband generator (R&S

SMW-B9 option) – real-time operation

(custom digital modulation)

See Digital Standards for Signal Generators specifications (PD 5213.9434.22).

Wideband baseband generator for GNSS with high dynamics

(R&S

SMW-B9F option)

This wideband baseband generator enables high dynamics with GNSS standards. For details see the GNSS simulation for

Rohde & Schwarz vector signal generators specifications (PD 3607.6896.22). Otherwise, the specifications of the wideband baseband

generator (R&S

SMW-B9 option) also apply for the R&S

SMW-B9F option. Enhancements of the R&S

SMW-B9 option and software

options that run on the R&S

SMW-B9 option also work with the R&S

SMW-B9F option.

Note that R&S

SMW-B9F and R&S

SMW-B9 cannot be mixed, i.e. only the following configurations can be installed:

• 1 × R&S

SMW-B9

• 2 × R&S

SMW-B9

• 1 × R&S

SMW-B9F

• 2 × R&S

SMW-B9F

Version 27.00, October 2024

64 Rohde & Schwarz R&S

SMW200A Vector Signal Generator

Baseband enhancements

Additive white Gaussian noise (AWGN) (R&S

SMW-K62 option)

AWGN can be generated either on path A or B with one R&S

SMW-K62 option. For AWGN to be generated on paths A and B

simultaneously, two R&S

SMW-K62 must be installed, and the R&S

SMW200A must be equipped with the R&S

SMW-B13T or

R&S

SMW-B13XT option.

Addition of an AWGN signal of settable bandwidth and settable C/N ratio or E

to a wanted signal. If the noise generator is used,

a frequency offset cannot be added to the wanted signal.

Noise

Distribution density

Gaussian, statistical, separate for I and Q

Crest factor

> 15 dB

Periodicity

> 3 · 10

C/N, E

Setting range

Depends on the set RF level.

The PEP of the sum signal (wanted signal

+ noise) must not exceed the maximum

possible PEP of the respective RF path.

–50 dB to +45 dB

Setting resolution

0.01 dB

Uncertainty

for system bandwidth = symbol rate,

symbol rate < 4 MHz,

–24 dB < C/N < 30 dB and

crest factor < 12 dB

< 0.1 dB

System bandwidth

bandwidth for determining noise power

Setting range

with R&S

SMW-B13/-B13T options

1 kHz to 160 MHz

with R&S

SMW-B13XT option

system configuration mode: standard

1 kHz to 2000 MHz

system configuration mode: advanced

1 kHz to 200 MHz

with R&S

SMW-K822 option

1 kHz to 400 MHz

with R&S

SMW-K823 option

1 kHz to 800 MHz

Setting resolution

100 Hz

Enhanced noise generation (R&S

SMW-K810 option)

Enhanced noise generation can be used either on signal path A or B with one R&S

SMW-K810 option. For enhanced noise

generation to be used on paths A and B simultaneously, two R&S

SMW-K810 must be installed. For each R&S

SMW-K810 option to

be installed, an R&S

SMW-K62 option must be installed as prerequisite.

Phase noise simulation

Phase noise

Injection

after fading

Profiles

user-defined

user

predefined PLL phase noise profiles

(simulation of typical PLL circuits)

PLL 1, PLL 2

predefined VCXO phase noise profiles

(simulation of typical oscillator circuits)

crystal 1 to 5

predefined DVB-S2 phase noise profiles,

based on EN 302307, DIRECTV

DVB-S2 P1, DVB-S2 P2, DVB-S2 D1,

DVB-S2 A1, DVB-S2 A2

predefined ATSC phase noise profiles,

based on ATSC A.74

ATSC A.74

File format

text files, editable

Graphical user interface

Entry

by curve table

Number of nodes

5 independent points

Calculation

internal

Amplitude at f

carrier

± 100 Hz

Setting range

measurement bandwidth = 1 Hz

–110.00 dBc to 0.00 dBc

Setting resolution

measurement bandwidth = 1 Hz

0.01 dB

Maximum phase angle

±180°

Density distribution function

Gaussian

Frequency response

depends on phase noise profile

System bandwidth

10 MHz