SMW200A_specs_en_3606-8037-22_v2700.pdf - 第58页

Version 27.00, October 2024 58 Rohde & Schwar z R&S ® SMW200A Vec tor Signal Generator The signal is star ted only when a trigger event occurs. The signal is gener ated once. single External trigger input selecta…

Version 27.00, October 2024

Rohde & Schwarz R&S

SMW200A Vector Signal Generator 57

Wideband baseband generator (R&S

SMW-B9 option) – arbitrary waveform

mode

One or two R&S

SMW-B9 can be installed. Their I/Q signals can be assigned a frequency offset.

Prerequisite: R&S

SMW-B13XT must be installed.

Waveform length

1 sample to 256 Msample in one-sample

steps

with R&S

SMW-K515 option

(memory extension)

1 sample to 2 Gsample in one-sample

steps

Supported file formats

.wv, .mat, .csv, .iq.tar

Nonvolatile memory

hard disk

Sample resolution

equivalent to D/A converter

14 bit

Sample rate

400 Hz to 600 MHz

with R&S

SMW-K525 option

400 Hz to 1200 MHz

with R&S

SMW-K527 option

400 Hz to 2400 MHz

Sample frequency error

internal clock

< (1 · 10

−12

+ relative deviation of

reference frequency) · sample rate (nom.)

Sample clock source

internal

Bandwidth (RF)

at maximum sample rate,

rolloff to –0.1 dB

500 MHz

at reduced sample rate,

rolloff to –0.1 dB

(The waveform is automatically

interpolated to the internal sample rate of

600 MHz.)

0.833 · sample rate

Bandwidth (RF) with R&S

SMW-K525

option

at maximum sample rate,

rolloff to –0.1 dB

1000 MHz

at reduced sample rate,

rolloff to –0.1 dB

(The waveform is automatically

interpolated to the internal sample rate of

1200 MHz.)

0.833 · sample rate

Bandwidth (RF) with R&S

SMW-K527

option

at maximum sample rate,

rolloff to –0.1 dB

2000 MHz

at reduced sample rate,

rolloff to –0.1 dB

(The waveform is automatically

interpolated to the internal sample rate of

2400 MHz.)

0.833 · sample rate

Frequency offset

Using 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

–250 MHz to +250 MHz

with R&S

SMW-K525 option

–500 MHz to +500 MHz

with R&S

SMW-K527 option

–1000 MHz to +1000 MHz

Frequency offset setting resolution

0.01 Hz

Frequency offset error

< 9 · 10

–6

Hz + relative deviation of

reference frequency · frequency offset

(nom.)

Triggering

A trigger event restarts I/Q generation. The I/Q signal is then synchronous with the

trigger (with a specific timing jitter).

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

Version 27.00, October 2024

58 Rohde & Schwarz R&S

SMW200A Vector Signal Generator

The signal is started only when a trigger

event occurs. The signal is generated

once.

single

External trigger input

selectable from USER 1, 2, 3 on front

panel, or USER 4, 5, 6 on rear panel

Connector type

USER 1, 2, 3 on front panel,

USER 4, 5, 6 on rear panel

BNC female

Input level

0 V to 3 V (nom.)

Threshold

USER 1, 2, 3

settable from 0.1 V to 2.0 V

USER 4, 5, 6

settable from 0.1 V to 2.0 V

Input damage voltage

–0.5 V, 3.8 V

Input impedance

selectable

1 kΩ or 50 Ω (nom.)

Trigger jitter

±1.67 ns

External trigger delay

Setting range

0 sample to 2.147 · 10

sample

Setting resolution

0.4 ns

External trigger inhibit

Setting range

0 sample to

(21.47 s · sample rate) sample

Setting resolution

1 sample

External trigger pulse width

> 7.5 ns

Marker signals

Number of marker signals

Operating modes

unchanged, restart, pulse, pattern, ratio

Marker outputs

selectable from USER 1, 2, 3 on front

panel or USER 4, 5, 6 on rear panel

Connector type

USER 1, 2, 3 on front panel,

USER 4, 5, 6 on rear panel

BNC female

Level

LVTTL

Marker delay

Setting range

0 sample to (waveform length – 1) sample

Setting resolution

1 sample

Marker duration

Minimum value

sample rate ≤ 300 Msample/s

1 sample

300 Msample/s < sample rate ≤

600 Msample/s

2 sample

600 Msample/s < sample rate ≤

1200 Msample/s

4 sample

1200 Msample/s < sample rate ≤

2400 Msample/s

8 sample

Multisegment waveform mode

Number of segments

1 to 1024

Changeover modes

GUI, remote control

Extended trigger modes

same segment, next segment, next

segment seamless, sequencer

Seamless changeover

output up to end of current segment,

followed by changeover to next segment

Sequencer play list length

max. 1024

Sequencer segment repetitions

max. 1 048 575

Multicarrier waveform mode

Number of carriers

max. 512

Total RF bandwidth

max. 500 MHz

with R&S

SMW-K525 option

max. 1000 MHz

with R&S

SMW-K527 option

max. 2000 MHz

Carrier spacing

Setting range

depends on number of carriers and signal

RF bandwidth

Setting resolution

0.01 Hz

Crest factor modes

maximize, minimize, off

Signal period modes

longest file, shortest file, user (max. 1 s)

Single carrier gain

Setting range

–80 dB to 0 dB

Setting resolution

0.01 dB

Single carrier start phase

Setting range

0° to 360°

Setting resolution

0.01°

Version 27.00, October 2024

Rohde & Schwarz R&S

SMW200A Vector Signal Generator 59

Single carrier delay

Setting range

0 s to 1 s

Setting resolution

1 ns

ARB Ethernet upload (R&S

SMW-K507 option)

ARB Ethernet upload is a sub mode of arbitrary waveform mode, see section Wideband baseband generator (R&S

SMW-B9 option) –

arbitrary waveform mode. This feature allows a fast upload und playback of waveform I/Q samples from an external source via UDP

over a QSFP+ LAN interface into a Rohde & Schwarz signal generator (R&S

SMW200A).

The waveform parameter and I/Q samples are transferred using special transmission commands (Rohde & Schwarz upload protocol,

see K507 user manual).

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 ARB Ethernet upload can be used either on signal path A or B with one R&S

SMW-K507 option. For simultaneous

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

SMW-K507 options must be installed.

ARB Waveform

File size, technical specification

see section Wideband baseband

generator (R&S

SMW-B9 option) –

arbitrary waveform mode

File generation

see R&S

SMW200A user manual, section

Using the Arbitrary Waveform Generator

(ARB)

Upload transmission protocol

R&S

ARB upload protocol

see K507 user manual

Marker signals

Number of marker signals

Operating modes

waveform (unchanged), restart

Marker outputs

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 recommended extras

below)

Protocol

UDP over Ethernet

Data rate

10 Gigabit Ethernet or 40 Gigabit Ethernet

can be configured in user interface

10 Gbit/s, 40 Gbit/s

Extended sequencing (R&S

SMW-K502 option)

The R&S

SMW-K502 option enables waveform sequencing and real-time signal generation for ultra long playtime. Waveform

variations such as offset frequency, amplitude and phase are calculated in real-time and do not require precalculated waveforms.

The extended sequencing is controlled by the external R&S

Pulse Sequencer Software, a powerful software tool for simulating

complex sequencing scenarios.

At least one R&S

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

SMW-B9 options are installed (signal

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

SMW-K502 option. For extended

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

SMW-K502 options must be installed.

General settings

Modes

controlled by external

R&S

Pulse Sequencer Software

(R&S

SMW-K300 required)

pulse sequencer

Pulse sequencer mode

see R&S

Pulse Sequencer Software

specifications (PD 3607.1388.22)

Waveform segments

Segment length

1 sample to 64 Msample

Minimum memory allocation

64 sample

Maximum number of segments

depends on segment lengths and

baseband generator ARB memory size

Waveform sequences

Sequencing

continuously repeating

Maximum number of segments per

sequence

depends on segment lengths and

baseband generator ARB memory size

Maximum number of segment repetitions