SMW200A_specs_en_3606-8037-22_v2700.pdf - 第46页

Version 27.00, October 2024 46 Rohde & Schwar z R&S ® SMW200A Vec tor Signal Generator Standard baseband generator (R&S ® SMW-B10 option) – arbitrary waveform mode One or two R&S ® SMW-B10 can b e install…

Version 27.00, October 2024

Rohde & Schwarz R&S

SMW200A Vector Signal Generator 45

Output parameters

Interface

Standard

in line with R&S

Digital I/Q Interface

PAD-R

I/Q data and control signals, data and

interface clock

Level

LVDS

Connector

26-pin MDR

I/Q sample rate

With source "user-defined", the sample rate must be entered via the parameter "sample

rate", no I/Q data clock being necessary. With source "digital I/Q out", the sample rate

will be estimated on the basis of the applied I/Q data clock.

Source

user-defined, digital I/Q out

Sample rate

maximum sample rate depends on

connected receiving device

400 Hz to 200 MHz

Resolution (user-defined)

0.001 Hz

Frequency uncertainty

(user-defined)

< (5 · 10

−14

+ relative deviation of

reference frequency) · sample rate (nom.)

I/Q data

Resolution

up to 18 bit

Logic format

two’s complement

Physical signal level

Setting range

0 to –60 dBFS

Setting resolution

0.01 dBFS

Bandwidth (RF)

sample rate = 200 MHz

(no interpolation, user-defined)

160 MHz

sample rate < 200 MHz (interpolation)

0.8 · sample rate

Control signals

markers

Input parameters

Input level

peak level

Peak level

Setting range

–60 dB to +3 dB, referenced to full scale

Setting resolution

0.01 dB

Crest factor

Setting range

0 dB to +30 dB

Setting resolution

0.01 dB

Adjust level function

automatically determines peak level and

crest factor of input signal

I/Q swap

I and Q signals swapped

on/off

Interface

Standard

in line with R&S

Digital I/Q Interface

PAD-R

I/Q data and control signals, data and

interface clock

Level

LVDS

Connector

26-pin MDR

I/Q sample rate

With source "user-defined", the sample rate must be entered via the parameter "sample

rate", no I/Q data clock being necessary. With source "digital I/Q in", the sample rate

will be estimated on the basis of the applied I/Q data clock.

Source

user-defined, digital I/Q in

Sample rate

maximum sample rate depends on

connected transmitting device

400 Hz to 200 MHz

Resolution (user-defined)

0.001 Hz

Frequency uncertainty

(user-defined)

< (5 · 10

−14

+ relative deviation of

reference frequency) · sample rate (nom.)

I/Q data

Resolution

18 bit

Logic format

two’s complement

Bandwidth (RF)

sample rate = 200 MHz

(no interpolation, user-defined)

160 MHz

sample rate < 200 MHz (interpolation)

0.8 · sample rate

Control signals

markers

R&S

Digital I/Q Interface PAD-R is a Rohde & Schwarz internal company guideline for the transmission of digital I/Q data. It is supported by a wide

range of signal generators, signal analyzers and radio communication testers.

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