SMU_dat-sw-en.pdf - 第23页

Version 08.00, Januar y 2012 Rohde & Schwarz R&S ® SMU200A Vector Signal Generator 23 Carrier leakage referenced to full scale < − 55 dBc, < − 65 dBc (typ.) up to 10 MHz 56 dB (t yp.) Suppression of image s…

Version 08.00, January 2012

22 Rohde & Schwarz

R&S

SMU200A Vector Signal Generator

resolution 18 bit

logic format two’s complement

physical signal level

setting range 0 to –60 dBFS

resolution 0.01 dBFS

bandwidth

sample rate = 100 MHz

(no interpolation, user-defined)

40 MHz

I/Q data

sample rate < 100 MHz (interpolation) 0.31 × sample rate

markers 4 Control signals

data valid valid samples marked in data stream

Baseband input (analog/digital) (R&S

SMU-B17 option)

At least one R&S

SMU-B13 baseband main module and at least one R&S

SMU-B9/-B10/-B11 I/Q baseband generator must be

installed. The R&S

SMU-B17 option makes it possible to feed external analog or digital signals to the baseband section of the

R&S

SMU200A. The frequency of the signals can be shifted, and the signals can be added to the internally generated signal with

settable level ratio. If the R&S

SMU200A is equipped with a fading simulator, the input signals can also be faded.

Mode see also simultaneous modulation analog input,

digital input

peak level

setting range –10 dB to 0 dB referenced to full scale

resolution 0.01 dB

crest factor

setting range 0 dB to 30 dB

resolution 0.01 dB

Input level

The adjust level function automatically determines the peak level and crest factor of the

input signal.

The frequency offset can be used to shift the center frequency of the input signal in the

baseband. The restrictions caused by the modulation bandwidth apply.

setting range −40 MHz to +40 MHz

resolution 0.01 Hz

Frequency offset

frequency accuracy < 5 × 10

− 10 × frequency offset +

reference frequency error

I/Q swap I and Q signals swapped on/off

Analog I/Q inputs

All specifications apply to a peak level of 0 dB.

input impedance 50 

VSWR up to 30 MHz < 1.1, 1.03 (typ.)

I/Q inputs

input voltage for full-scale input

+= 0.5 V

carrier leakage I, Q

setting range −10 % to +10 %

resolution 0.01 %

I ≠ Q (imbalance)

setting range −3 dB to +3 dB

resolution 0.001 dB

I/Q skew

setting range –1 ns to +1 ns

I/Q impairment

resolution 1 ps

sample rate 100 MHz A/D converter

resolution 14 bit

with amplitude and group delay correction

bandwidth, roll-off to –0.1 dB 30 MHz

Aliasing filter

stopband rejection, f  70 MHz 80 dB (typ.)

I/Q wideband: on, optimize internal I/Q impairments for RF output: on

up to 10 MHz 0.2 dB (typ.)

RF frequency response for entire

instrument in modulation bandwidth

up to 30 MHz 0.4 dB (typ.)

Version 08.00, January 2012

Rohde & Schwarz R&S

SMU200A Vector Signal Generator 23

Carrier leakage referenced to full scale <

−55 dBc, < −65 dBc (typ.)

up to 10 MHz 56 dB (typ.) Suppression of image sideband for entire

instrument in modulation bandwidth

up to 30 MHz 50 dB (typ.)

wideband noise, with full-scale DC input

20 MHz  f  200 MHz –145 dBc (typ.)

200 MHz < f  1.5 GHz –148 dBc (typ.)

1.5 GHz < f  3 GHz –148 dBc (typ.)

f > 1.5 GHz –145 dBc (typ.)

ACLR with an ideal input signal, 3GPP test model 1, 64 DPCH

level  10.5 dBm PEP,  16.5 dBm PEP with R&S

SMU-B31, R&S

SMU-B36 options

frequency = 1800 MHz to 2200 MHz

5 MHz offset (baseband gain: 3 dB) 70 dB (typ.)

RF spectral purity

10 MHz offset (baseband gain: 6 dB) 73 dB (typ.)

Digital I/Q inputs

standard in line with Rohde & Schwarz TVR290,

I/Q data and control signals, data and

interface clock

level LVDS

connector 26-pin MDR

Interface

data rate 66 MHz to 100 MHz

source user-defined, digital I/Q in

sample rate 400 Hz to 100 MHz

resolution (user-defined) 0.001 Hz

I/Q sample rate

(max. sample rate depends on interface

data 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.

frequency uncertainty (user-defined) < 5 × 10

−

resolution 18 bit

logic format two’s complement

bandwidth

sample rate = 100 MHz

(no interpolation, user-defined)

40 MHz

I/Q data

sample rate < 100 MHz (interpolation) 0.31 × sample rate

markers 4 Control signals

data valid valid samples marked in data stream

Version 08.00, January 2012

24 Rohde & Schwarz

R&S

SMU200A Vector Signal Generator

I/Q baseband generator (R&S

SMU-B9/-B10/-B11 option) – arbitrary

waveform mode

At least one R&S

SMU-B13 baseband main module must be installed. One or two R&S

SMU-B9/-B10/-B11 options 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.

output memory

waveform length with R&S

SMU-B9

option

128 sample to 128 Msample in

one-sample steps

waveform length with R&S

SMU-B10

option

128 sample to 64 Msample in one-sample

steps

waveform length with R&S

SMU-B11

option

128 sample to 16 Msample in one-sample

steps

resolution 16 bit

loading time 10 Msample 15 s

Waveform memory

nonvolatile memory hard disk

number of segments max. 1024 segments

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)

5 µs (meas.)

seamless changeover output up to end of current segment,

followed by changeover to next segment

sequencer play list length max. 96

Multisegment waveform

sequencer segment repetitions max. 65535

number of carriers max. 32

total RF bandwidth max. 80 MHz

crest factor modes maximize, minimize, off

signal period modes longest file, shortest file, user (max. 1 s)

single carrier gain –80 dB to 0 dB

single carrier start phase 0° to 360°

Multicarrier waveform

single carrier delay 0 s to 1 s

clock rate 400 Hz to 100 MHz

resolution 0.001 Hz

operating mode internal, external

Clock generation

frequency uncertainty (internal) < 5 × 10

−

× clock rate +

uncertainty of reference frequency

The sample rate of the waveform is automatically interpolated to the internal 100 MHz

data rate.

bandwidth

clock rate = 100 MHz (no interpolation),

roll-off to –0.1 dB

40 MHz

Interpolation

clock rate  100 MHz, drop to

−0.1 dB 0.31 × clock rate

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

signal. The restrictions caused by the modulation bandwidth apply.

range −40 MHz to +40 MHz

resolution 0.01 Hz

Frequency offset

frequency uncertainty < 5 × 10

− 10 × frequency offset +

reference frequency error