SMU_dat-sw-en.pdf - 第15页

Version 08.00, Januar y 2012 Rohde & Schwarz R&S ® SMU200A Vector Signal Generator 15 drift versus temperature 0.1° (nom.) when ambient temperature changes by 1 °C versus time 0.02°/h (nom.) versus level 2°/dB (n…

Version 08.00, January 2012

14 Rohde & Schwarz R&S

SMU200A Vector Signal Generator

List mode

Frequency and level values can be stored in a list and set in an extremely short amount of time.

Operating modes automatic, single sweep, manual or

external trigger, fast hopping with

immediate and external trigger

Max. number of channels 10000

Dwell time 1 ms to 1 s

Resolution 0.1 ms

after external trigger see frequency and level data Setting time

additional trigger delay in two-path units,

both paths operated in list mode

< 200 µs

Phase coherence (R&S

SMU-B90 option)

The R&S

SMU-B90 provides phase-coherent RF outputs of two or more RF paths for one or more instruments with I/Q modulation.

The R&S

SMU-B90 option can be installed in any R&S

SMU200A with serial number 103001 or higher.

internal This mode corresponds to normal

operation. Each RF path uses its internal

local oscillator.

external An external signal is used for path A. With

a two-path instrument, the internal local

oscillator signal is used for path B.

coupled A –> B The local oscillator signal of path A is also

used for path B (only for two-path

instruments).

Coupling modes

externally coupled A –> B An external signal is input at the LO IN

connector and used for the coupled paths

A and B (only for two-path instruments).

The internal local oscillator signal used

with path A is also available on the LO

OUT connector (in order to couple two

instruments).

LO out state

The LO OUT signal is switched off. off

internal mode (no LO coupling)

underrange 100 kHz to < 300 kHz

R&S

SMU-B102,

R&S

SMU-B202

up to 2 GHz

R&S

SMU-B103,

R&S

SMU-B203,

up to 3 GHz

R&S

SMU-B104 up to 4 GHz

Frequency range

R&S

SMU-B106 up to 6 GHz

external modes, coupled A –> B,

externally coupled A –> B

R&S

SMU-B102 and

R&S

SMU-B202

200 MHz to 2 GHz

R&S

SMU-B103 and

R&S

SMU-B203

200 MHz to 3 GHz

other configurations Coupling is possible within the smallest

common frequency range of all RF paths

to be coupled.

LO IN 10 dBm to 16 dBm (nom.) Levels of external local oscillator signals

LO OUT 13 dBm (nom.)

Version 08.00, January 2012

Rohde & Schwarz R&S

SMU200A Vector Signal Generator 15

drift

versus temperature 0.1° (nom.)

when ambient temperature changes

by 1 °C

versus time 0.02°/h (nom.)

versus level 2°/dB (nom.)

setting range

(with baseband phase offset)

0.00° to 359.99°

Phase

setting resolution 0.01°

Version 08.00, January 2012

16 Rohde & Schwarz R&S

SMU200A Vector Signal Generator

Analog modulation

Internal modulation generator

Frequency range 0.1 Hz to 1 MHz

Resolution of setting 0.1 Hz

Frequency uncertainty < 0.012 Hz

relative deviation of reference frequency

up to 100 kHz < 0.1 dB Frequency response

up to 1 MHz < 1 dB

Distortion up to 100 kHz at R

> 200 ,

level = 1 V (V

)

< 0.1 %

at LF connector, R

> 200  1 mV to 3 V

resolution 1 mV

Output voltage

setting uncertainty at 1 kHz < (1 % of reading + 1 mV)

Output impedance 16 

Frequency setting time to within < 1 × 10

−

, with GUI update

stopped, after IEC/IEEE bus delimiter

< 3 ms

digital sweep in discrete steps

operating modes

automatic, step, single,

external single, external step,

manual or external trigger,

linear or logarithmic spacing

sweep range entire frequency range

linear step width entire frequency range

Sweep

logarithmic step width 0.01 % to 100 % per step

Input for external modulation signals

input impedance

high (> 100 k),

switchable to 50  with R&S

SMU-B20 or

R&S

SMU-B22 option

input sensitivity (peak value for set

modulation depth or deviation)

1 V

Modulation input

EXT MOD

maximum permissible input voltage ±10 V

Amplitude modulation

Operating modes internal, external AC/DC

Modulation depth modulation is clipped at high levels if

maximum PEP is reached

0 % to 100 %

Resolution 0.1 %

Setting uncertainty attenuator mode: auto,

mod

= 1 kHz and m < 80 %

< (1 % of reading + 1 %)

PEP in specified range,

attenuator mode: auto

f  3 GHz, at f

mod

= 1 kHz, m = 30 % < 0.5 %

m = 80 % < 0.8 %

f > 3 GHz, at f

mod

= 1 kHz, m = 30 % < 1 %

AM distortion

m = 80 % < 1.6 %

Modulation frequency range DC, 20 Hz to 500 kHz

Modulation frequency response AC mode, 20 Hz to 500 kHz < 1 dB

Synchronous M at AM m = 30 %, f

mod

= 1 kHz, peak value < 0.1 rad

Wideband amplitude modulation

Operating modes modulation input I external DC

Modulation frequency response as with I/Q modulation – external wideband I/Q

Input impedance 50 

Input sensitivity peak voltage for 100 % AM 0.25 V