SMW200A_specs_en_3606-8037-22_v2700.pdf - 第47页

Version 27.00, October 2024 Rohde & Schwar z R&S ® SMW200A Vec tor Signal Generator 47 External trigger input selectable from U SER 1, 2, 3 on front panel or T/M/C 1, T/M 2, T/M 3 of respec tive baseband gene rat…

Version 27.00, October 2024

46 Rohde & Schwarz R&S

SMW200A Vector Signal Generator

Standard baseband generator (R&S

SMW-B10 option) –

arbitrary waveform mode

One or two R&S

SMW-B10 can be installed. Their I/Q signals can be assigned a frequency offset and/or be added in the digital

domain with settable level ratio.

Prerequisite: Either R&S

SMW-B13 or R&S

SMW-B13T must be installed.

Waveform length

1 sample to 64 Msample in one-sample

steps

with R&S

SMW-K511 option

(memory extension)

1 sample to 512 Msample in one-sample

steps

with R&S

SMW-K512 option

(memory extension)

1 sample to 1 Gsample in one-sample steps

Supported file formats

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

Nonvolatile memory

hard disk

Sample resolution

equivalent to D/A converter

16 bit

Sample rate

400 Hz to 150 MHz

with R&S

SMW-K522 option

400 Hz to 200 MHz

Sample frequency error

internal clock

< (5 · 10

−14

+ relative deviation of reference

frequency) · sample rate (nom.)

Sample clock source

internal, external

Bandwidth (RF)

using the maximum sample rate,

rolloff to –0.1 dB

120 MHz

using a reduced sample rate,

rolloff to –0.1 dB

(The waveform is automatically

interpolated to the internal sample rate

of 150 MHz.)

0.8 · sample rate

Bandwidth (RF) with R&S

SMW-K522

option

using the maximum sample rate,

rolloff to –0.1 dB

160 MHz

using a reduced sample rate,

rolloff to –0.1 dB

(The waveform is automatically

interpolated to the internal sample rate

of 200 MHz.)

0.8 · sample rate

Frequency offset

The frequency offset can be used to shift the center frequency of the wanted baseband

signal. 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

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

The signal is started only when a trigger

event occurs. The signal is generated

once.

single

Version 27.00, October 2024

Rohde & Schwarz R&S

SMW200A Vector Signal Generator 47

External trigger input

selectable from USER 1, 2, 3 on front panel

or T/M/C 1, T/M 2, T/M 3 of respective

baseband generator on rear panel

Connector type

USER 1, 2, 3 on front panel,

T/M/C 1, T/M 2, T/M 3 of respective

baseband generator 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

T/M/C 1, T/M 2, T/M 3

settable from 0.3 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

±2.5 ns

External trigger delay

Setting range

0 sample to 2.147 · 10

sample

Setting resolution

without R&S

SMW-B14 option

5 ns

with R&S

SMW-B14 option

1/fading clock rate (= 5 ns or 10 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 T/M/C 1, T/M 2, T/M 3 of respective

baseband generator on rear panel

Connector type

USER 1, 2, 3 on front panel,

T/M/C 1, T/M 2, T/M 3 of respective

baseband generator 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

1 sample

Multisegment waveform mode

Number of segments

1 to 1024

Changeover modes

GUI, remote control, external trigger

Extended trigger modes

same segment, next segment, next

segment seamless, sequencer

Changeover time

at 50 MHz clock rate, external trigger,

without clock change

20 µs (meas.)

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. 120 MHz

with R&S

SMW-K522 option

max. 160 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°

Single carrier delay

Setting range

0 s to 1 s

Setting resolution

1 ns

Version 27.00, October 2024

48 Rohde & Schwarz R&S

SMW200A Vector Signal Generator

Extended sequencing (R&S

SMW-K501 option)

The R&S

SMW-K501 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 R&S

SMW-K501 option offers two different modes:

In user mode, all sequences are based on user-defined XML based lists with up to 5 levels of nested loops. Special list types for

frequency changes over time and amplitude changes over time are also available.

In pulse sequencer mode, 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-B10 option (standard baseband generator) must be installed. If two R&S

SMW-B10 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-K501 option. For extended

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

SMW-K501 options must be installed.

General settings

Modes

sequencing via user-defined XML lists

user

controlled by external

R&S

Pulse Sequencer Software

(R&S

SMW-K300 required)

pulse sequencer

User mode

List types

Sequencing lists define an arbitrary

number of entries that represent either a

waveform or a sublist with further entries.

sequencing list

Time lists store a list of different off times

between waveform segments. They can

be referenced in sequence entries.

time list

Attenuation lists define the power level of

the output signal over time.

attenuation list

Hopping lists define frequency offsets of

the output signal over time.

hopping list

Sequence

link to a sequencing list XML file

Attenuation over time

link to an attenuation list XML file

Hopping

link to a hopping list XML file

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

Clock

see section Standard baseband generator

(R&S

SMW-B10 option) – arbitrary

waveform mode

Triggering

see section Standard baseband generator

(R&S

SMW-B10 option) – arbitrary

waveform mode

Marker signals

Number of marker signals

Operating modes

marker at every start of sequence

restart

marker 1 embedded in waveform

unchanged

XML-defined marker for each entry

entry

Marker outputs

see section Standard baseband generator

(R&S

SMW-B10 option) – arbitrary

waveform mode

Marker delay

see section Standard baseband generator

(R&S

SMW-B10 option) – arbitrary

waveform mode

Marker duration

see section Standard baseband generator

(R&S

SMW-B10 option) – arbitrary

waveform mode