News from Rohde & Schwarz
Magazine for test & measurement and radio communication
News from Rohde & Schwarz Issue 1999/II - 162
Microwave Signal Generators SMR: Microwave in handy size
Compact, lightweight and enormously powerful – that is probably the best characterization of the new SMR generator family. Rohde &Schwarz engineers succeeded in packing generators with excellent signal characteristics into 19-inch rackmounts that are only 88 mm high and 450 mm deep. Weighing less than 12 kg they are ideal for field applications. And what is more: all three SMR models can be upgraded from a pulse-modulated CW generator to an AM/FM signal generator or synthesized sweeper with analog frequency sweep. These features and the extremely attractive price make the generators highly appreciated signal sources in research, development and production as well as for EMC measurements.
Microwave Signal Generators SMR: Microwave in handy size
EMI Test Receivers ESI: EMI professionals through to 40 GHz
The new ESI family combines the flexibility and speed of spectrum analyzers with the large dynamic range expected of EMI test receivers. They meet all requirements to the full, making them the ideal choice for EMI measurements to standards as well as for general-purpose measurements in the development lab. ESI 40, which is the successor of the ESAI, ESBI and ESMI family of test receivers, opens up the frequency range to 40 GHz in its basic configuration already.
EMI Test Receivers ESI: EMI professionals through to 40 GHz
DECT Protocol Testers TS1220 and PTW15: Coverage measurements in DECT networks
DECT (digital enhanced cordless telecommunication) has become established by now as a standard for a number of applications. In addition to the use for cordless telephones (residential application) this particularly applies to the field of WLL (wireless local loop). DECT Protocol Testers TS 1220 and PTW15 (FIG 1) with new and enhanced modules provide optimum support for coverage measurements or for in-depth analysis in the case of faults.
DECT Protocol Testers TS1220 and PTW15: Coverage measurements in DECT networks
Spectrum Analyzers R 3132 and R 3162: New allrounders in the middle class
Mobile phones, trunked radio and digital broadcasting – the growing importance of radio systems makes increasing demands on spectrum analyzers. Advantest is now presenting its latest, powerful middle-class analyzers, two universal units in synthesizer technology designed for manual operation as well as integration into automatic test systems in development, production and service. The two Advantest instruments are ideal vertical additions to the Rohde & Schwarz product line. For this reason they are marketed by Rohde &Schwarz in Europe and in many other countries as part of a successful cooperation between the two companies.
Spectrum Analyzers R 3132 and R 3162: New allrounders in the middle class
Database-supported documentation: Technical documentation by high-tech methods
The capabilities of the service center for technical documentation of the Rohde & Schwarz Cologne Plant are not only available for use within the company, the center’s know-how is also offered to external customers. The services go far beyond traditional hardcopy documentation. With automatic generation of documents from databases, cross-media publishing and multimedia productions, the competence center utilizes the whole range of modern publication means.
Database-supported documentation: Technical documentation by high-tech methods
New for GSM mobile phones: multitone analysis via air interface
The acoustic transmission and reproduction quality of a mobile phone is its most important characteristic in everyday use. Instruments and procedures for measuring acoustic characteristics are therefore essential tools for determining the quality of a mobile.
New for GSM mobile phones: multitone analysis via air interface
I/Q Modulation Generator AMIQ: more applications through differential I/Q outputs
Rohde & Schwarz developed I/Q Modulation Generator AMIQ for convenient generation of baseband signals for complex I/Q modulation, which is increasingly used in modern communication. AMIQ is operated either from Vector Signal Generator SMIQ or Software WinIQSIM supplied with it.
I/Q Modulation Generator AMIQ: more applications through differential I/Q outputs
DAB-T and DVB-T: Coverage measurement and monitoring systems
for DAB-T and DVB-T
After successful completion of numerous European pilot projects, digital audio broadcast (DAB) is about to be introduced also in Germany. With digital video broadcast (DVB), various pilot projects are in progress that furnish the necessary know-how for an implementation in the near future. For all parties concerned from the program provider to the customer, the availability of a defined signal quality at the receiver input is decisive for the quality of the service offered (apart from the program content) and an essential criterion for user acceptance.
DAB-T and DVB-T: Coverage measurement and monitoring systems
for DAB-T and DVB-T
EMC test systems: Extending EMC test systems for determining
antenna parameters
To ensure undisturbed operation of the continuously increasing number of mobile and cordless communication equipment, narrow tolerances have to be defined in the specifications. In the future, manufacturers will have to cope with more stringent measurement regulations, eg standardized type-approval tests or EMC measurements including measurements of antenna parameters.
EMC test systems: Extending EMC test systems for determining
antenna parameters
TV Test Transmitter SFQ: Fading simulation with TV Test Transmitter SFQ
After the start of digital TV transmission via cable (DVB-C) and satellite (DVB-S), terrestrial digital transmission (DVB-T) is about to be introduced. In contrast to analog programs, DVB-T programs are broadcast via singlefrequency networks, which allow a much more economical use of frequencies than conventional analog multifrequency networks. Influences of the terrain and the resulting problems of multipath propagation however prevail in this case as well (see blue box on next page).
TV Test Transmitter SFQ: Fading simulation with TV Test Transmitter SFQ
Shortwave: direction finding on ships
Direction finders as key components of radiomonitoring systems on ships – together with optical and radar equipment – considerably expand the detection range in terms of frequency spectrum and distance. In the shortwave band, however, direction finding systems on ships have to cope with extremely unfavourable electromagnetic environments ...
Shortwave: direction finding on ships
ACCESSNET ®: Countrywide ACCESSNET ®
trunked radio system in South Siberia
Irkutskenergo is a big Russian utility company operating in the vast region west of Lake Baikal in South Siberia (FIG 1). The Irkutsk administrative regio (FIG 2), where Irkutskenergo operates, has an area of about 770 000 km˛ and a population of around three million people. In this area, there are several huge power plants (among which the Bratsk and Ust’-Ilimsk plants are the biggest) and major industrial enterprises, including an aluminium plant.
ACCESSNET ®: Countrywide ACCESSNET ®
trunked radio system in South Siberia
ISDNwall: intrusion detection and protection for telecommunication systems
The increasing digitization of information is gradually eliminating the differences between classic communication networks and modern digital IT networks. Consequently, communication networks are confronted with the same security problems as classic IT networks.
ISDNwall: intrusion detection and protection for telecommunication systems
Test reaching for the skies: measuring the EMS of large DUTs
If the dimensions of the DUT exceed the half-power beamwidth of the antenna used for measuring the DUT’s immunity to electromagnetic fields, most standards prescribe tests to be repeated at different antenna positions changed in steps. This ensures at least that each part of the DUT is exposed to the required field strength.
Test reaching for the skies: measuring the EMS of large DUTs
Motorola Service Test System GATE 22: Faster with T & M from Rohde & Schwarz
Faster – further – higher. This principle is the driving force not only in sports but also for measurements. Fast service of good quality throughout is essential for successful marketing, particularly of mass products like mobile phones.
Motorola Service Test System GATE 22: Faster with T & M from Rohde & Schwarz
GSM system simulator: the pacemaker in mobile radiocommunications
Ten years have passed since Rohde & Schwarz won the order for the development of a test system for type-approval testing of GSM mobiles in the 900 MHz band [1]. The invitation to tender was put out by a consortium of six European GSM network operators. Hardly anyone could foresee at that time the importance the simulator would have for the rapid development of mobile radiocommunications. Although originally created as a European standard, GSM soon enjoyed great popularity all over the world.
GSM system simulator: the pacemaker in mobile radiocommunications
ROHDE & SCHWARZ GmbH & Co. KG
Muehldorfstrasse 15, 81671 Munich, Germany
Phone: +49 89 41 29 - 0
Fax: +49 89 41 29 12 164
e-Mail: CustomerSupport@rohde-schwarz.com
Internet: http://www.rohde-schwarz.com/
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