Product brochure Version Version 02.03 01.00 Vector Signal Generator ¸SMU200A The art of signal generation

Highlights of a new generation The Vector Signal Generator ¸SMU200A has been designed to meet all requirements encountered in research and development of modern communications systems as well as in their production. The ¸SMU200A not only combines up to two independent signal generators in one cabinet of only four height units – it also offers unrivaled RF and baseband characteristics. Vector Signal Generator ¸SMU200A Due to its modular design, the ¸SMU200A can be optimally adapted to the requirements of different applications. The first RF path can be equipped with one of the four available frequency...

Outstanding signal quality Unrivaled flexibility ◆ Frequency options from 100 kHz to 2.2 GHz/3 GHz/4 GHz/6 GHz for the first RF path ◆ Optional second RF path up to 2.2 GHz or 3 GHz ◆ Up to two complete baseband paths ◆ Lossless combination of baseband signals in the digital domain (e.g. for testing multistandard base stations) ◆ I/Q modulator with 200 MHz RF bandwidth ◆ Very low SSB phase noise of typ. –135 dBc (f = 1 GHz, 20 kHz carrier offset, 1 Hz measurement bandwidth) ◆ Wideband noise of typ. –153 dBc (CW, f = 1 GHz, >5 MHz carrier offset, 1 Hz measurement bandwidth) ◆ Excellent ACLR of...

Intuitive operation modern and intuitive user interface. The signal flow from the baseband to the RF output is clearly shown in the block dia- gram. Each block represents a function- al unit of the instrument. The generated signal can be seen at a glance, including whether it is affected by additive white Gaussian noise or other impairments. The rotary knob plays a central role in the instrument to be operated with one hand. Any task - whether navigating in the block diagram or menus, selecting of parameters or toggling between states - can be performed simply by turning or pressing the rotary...

The baseband signal can be monitored in the graphics block. For instance, the vector or constellation diagram, the l/Q characteristic or the output spectrum of a signal can be displayed, making it possible to check whether the generat- ed signal corresponds to the required signal. This is of great help particularly when complex signals are produced. Another outstanding feature of the online help. If the exact function of a pa- rameter is not known, simply pushing the help key instantaneously displays a help text with information about the se- lected parameter. Further information can be obtained...

Outstanding signal quality Amplifiers of 3GPP base stations require very good adjacent channel leakage ratio (ACLR) performance in order not to impair the adjacent channels of the transmission. To test this feature, the ACLR characteristics of the signal generator must be better than those of the amplifier. Presently, multicarrier power amplifiers are increasingly used. In this case, not only one but several neighboring signals in the frequency range are amplified. Testing such amplifiers places even higher demands on signal generator capabilities. The outstanding ACLR characteristics of the...

Available Power, Attenuator Mode Normal (lower trace) and High Power (upper trace) 30 28 Level / dBm The ¸SMU200A offers highly accurate output power of up to +13 dBm (PEP). A wear-and-tear-free electronic attenuator is used in the full level range. With the aid of the high-power output option, the output power can be increased to +26 dBm (PEP) in the overrange. Typical maximum output power versus frequency (with and without high-power output option) Digital ALC implemented in the ¸SMU200A together with a detector operating at constant temperature ensures high level linearity and repeatability....

Unrivaled flexibility The standards of the third mobile radio generation set considerably higher demands on signal generator functionality. Because of their good RF characteristics and their flexibility, signal generators are the instrument of choice particularly when base stations are tested. The universal coder in the baseband generator of the ¸SMU200A has been designed for easy implementation of new standards. The ¸SMU200A is therefore well prepared for present and future mobile radio standards. Realtime channels Four code channels in realtime with additional background channels For the control...

tion to be checked in line with TS 25.141. The number of required bit and block er- Because of generation in realtime, con- tinuous measurements of BER and BLER can be carried out without wrap-around The receiver of a mobile phone must of course also function under real operat- ing conditions. To check this, orthogo- nal background and interfering channels of a base station can be simulated in line with TS 25.101. The power of these channels is automatically configured so that the total output power of the base station remains unchanged. This allows measurements of the maximum input level in...

For receiver power measurements, the trol and traffic channels of the various radio configurations in the 1x mode. Since channel coding is fully implement- al bit error ratio testers are necessary. By evaluating the CRC fields, the base sta- tion is able to perform the frame error ra- standard directly on the received signal. In the forward link mode, the R&S®SMU200A supports a total of four user-selectable base stations for each car- rier frequency. Each simulated base sta- tion provides all control channels of the standard and up to eight independently configurable traffic channels. Any radio...

When receivers are tested, it must be possible to simulate real receive conditions. In the ¸SMU200A, additive white Gaussian noise (AWGN) can be superimposed on the wanted signal. The signal-to-noise ratio can be set in a wide range. Thus, highly accurate sensitivity measurements can be performed on receivers with a defined S/N ratio, in compliance with 3GPP specifications TS 25.141 and TS 25.101. The internal arbitrary waveform generator (ARB) with its large 56 ­Msample memory for I and Q (and 4 marker bits per sample) and a clock rate of 100 Msample/s offers ideal conditions for generating...