SMW200A_specs_en_3606-8037-22_v2700.pdf - 第49页

Version 27.00, October 2024 Rohde & Schwar z R&S ® SMW200A Vec tor Signal Generator 49 Standard baseband generator (R&S ® SMW-B10 option) – real -time operation (custom digital modulation) See Digital Standar…

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

Version 27.00, October 2024

Rohde & Schwarz R&S

SMW200A Vector Signal Generator 49

Standard baseband generator (R&S

SMW-B10 option) –

real-time operation (custom digital modulation)

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

Version 27.00, October 2024

50 Rohde & Schwarz R&S

SMW200A Vector Signal Generator

Wideband baseband characteristics

Internal baseband characteristics (R&S

SMW-B13XT option)

The R&S

SMW-B13XT provides I/Q paths that can be routed to the installed RF paths or to the analog I/Q outputs. Up to two signals

can be output at the same time, for example:

• Signal A is routed to RF path A, signal B to RF path B

• Signal A is routed to RF path A, signal B to analog I/Q out 1

D/A converter

Data rate

2400 MHz

Resolution

14 bit

Sample rate

4800 MHz (internal interpolation · 2)

Aliasing filter

with amplitude, group delay and S

correction

Bandwidth, rolloff to –0.1 dB

1000 MHz

SFDR overall

> 55 dB

I/Q impairments (digital baseband)

These impairments are set in the digital baseband section of the R&S

SMW200A. They

act on the I/Q signal sent to the I/Q modulator/RF section, as well as on the I/Q signals

at the analog or digital I/Q outputs (of the respective path).

Carrier leakage

Setting range

–10 % to +10 %

Setting resolution

0.01 %

I  Q (imbalance)

Setting range

–1 dB to +1 dB

Setting resolution

0.01 dB

Quadrature offset

Setting range

–10° to +10°

Setting resolution

0.01°

Wideband analog I/Q outputs (R&S

SMW-B13XT option)

Number of I/Q outputs

single-ended

Output impedance

50 Ω

Output voltage

EMF (output voltage depends on set

modulation signal)

1 V (V

)

Offset

EMF

< 1 mV

Frequency response

at R

= 50 Ω

Magnitude

up to 100 MHz

0.1 dB (meas.)

up to 1000 MHz

0.2 dB (meas.)

I/Q balance

at R

= 50 Ω

Magnitude

up to 100 MHz

0.1 dB (meas.)

up to 1000 MHz

0.1 dB (meas.)

Spectral purity

at R

= 50 Ω

SFDR (sine wave)

100 MHz

> 60 dB

up to 1000 MHz

55 dB (meas.)

Wideband noise

10 MHz sine wave at 1 MHz offset

–155 dBc (typ.)

"Optimize internal I/Q impairments for RF output" switched off.

Value applies after 1 hour warm-up time and recalibration for 4 hours of operation and temperature variations of less than +5 °C.