News from Rohde & Schwarz
Magazine for test & measurement and radio communication
News from Rohde & Schwarz Issue 2002/IV - 176
Turbo for UMTS network optimization: PN Scanner R&S TS5K51C
Similar to a fast Fourier transform that produces the result within fractions of the calculation time of a
DFT algorithm, scalar products can also be highly efficiently calculated. The turbo in the UMTS PN Scanner R&S TS5K51C (FIG 1) is one such quick method, and the first in a new line of products for rapid, precise and error-free analysis of the reception conditions for CDMA signals.
Turbo for UMTS network optimization: PN Scanner R&S TS5K51C
WCDMA generator for tests on 3GPP base station receivers: Universal Radio Communication Tester R&S CMU300
The new options R&S CMU-B76 und R&S CMU-K76 add WCDMA generator functions to the R&S CMU300 (FIG 1), thus making it ideal not only for receiver measurements on GSM/ EDGE base stations, but also for unprecedented receiver measurements on 3GPP base stations.
WCDMA generator for tests on 3GPP base station receivers: Universal Radio Communication Tester R&S CMU300
Receiver measurements on GPRS and EGPRS mobile phones: Universal Radio Communication Tester R&S CMU200
What UMTS holds for the future is already materializing in GSM networks: high-speed data ransmission. This is made possible with the 2.5G standards GPRS and EGPRS. While EGPRS mobile phones are still in the development stage, GPRS mobiles are already on the market. The new 2.5G standards mean new measurement challenges for manufacturers of mobile phones. For example, new approaches have to be taken in receiver measurements. The Universal Radio Communication Tester
R&S CMU200 from Rohde & Schwarz provides full receiver test capability not only for GPRS, but now for EGPRS mobile phones as well.
Receiver measurements on GPRS and EGPRS mobile phones: Universal Radio Communication Tester R&S CMU200
Speech coder for CDMA2000 audio measurements: Universal Radio Communication Tester R&S CMU200
The quality of a mobile phone is defined above all by its acoustic characteristics. When the audio signal is tested, the radio communication tester must be fitted with a speech coder. Due to the high complexity of the mobile radio standards cdmaOne and CDMA2000, no speech coder had been provided in a test set before now; the audio section of CDMA mobile phones was usually tested
in the analog AMPS standard. Fitted with the new speech coder option, the R&S CMU200 is the first mobile radio test set capable of performing audio tests on CDMA mobile radios.
Speech coder for CDMA2000 audio measurements: Universal Radio Communication Tester R&S CMU200
Ready for mass production, incoming goods inspection and service: Test Platform for Mobile Phone Production R&S TS7180
Compact design with a minimum of components is characteristic of modern mobile phones. Although this simplifies the scope of production tests, precise, fast and comprehensive RF measurements are still necessary. Moreover, with the launch of 3G there will also be mobile phones that support several mobile radio standards in one unit. This calls for a production test system such as the new R&S TS7180 which meets all these requirements with a high degree of both economic viability and flexibility.
Ready for mass production, incoming goods inspection and service: Test Platform for Mobile Phone Production R&S TS7180
Multicell systems with up to four GSM cells: GSM Protocol Testers R&S CRTU-G / CRTU-S
Rohde & Schwarz is continuously expanding its portfolio for GSM protocol analysis. Current develop-ments include, for example, multicell systems that consist of up to four GSM Universal Protocol Testers R&S CRTU-G and simulate as many as four complete GSM cells for tests, and the Protocol Tester R&S CRTU-S (CRTU "small"), the "little brother" of the R&S CRTU-G.
Multicell systems with up to four GSM cells: GSM Protocol Testers R&S CRTU-G / CRTU-S
Video and audio test signals for professional applications: Professional Test DVDs
The test DVDs come as a compendium of several DVDs with professional test patterns and test data streams for audio, video and EMC applications relating to DVD players. These include measure-ments
of video and audio quality, automatic error correction tests, reliability and laser tests, as well as test patterns for subjective quality assessment. Used in conjunction with audio and video analyzers or EMC test systems from Rohde & Schwarz, the DVDs also enable fully automatic quality measurement
and analysis of DVD equipment.
Video and audio test signals for professional applications: Professional Test DVDs
Flexible automatic system for testing RF components and modules: Network and Component Analyzer R3860 from Advantest
With innovation cycles becoming increasingly shorter, measuring instruments must be adaptable to
future requirements. This is the case with the new Network and Compo-nent Analyzer R 3860 from Advantest (FIG 1), whose modular design offers optimum flexibility and adaptability. The basic model covers a frequency range from 300 kHz to 8 GHz and comes in different versions for measurements on two-port, three-port and four-port devices.
Flexible automatic system for testing RF components and modules: Network and Component Analyzer R3860 from Advantest
Golden devices: ideal path or detour?: Vector Signal Generator R&S SMV
Featuring a frequency range of 9 kHz to 3.3 GHz, a precise vector modulator with 100 MHz RF bandwidth, high frequency and level accuracy, short setting times and an electronic
attenuator, the R&S SMV03 (FIG 1) is the ideal signal generator for auto-matic component and module tests in production as well as for general applications in research, development and service. It offers significant advantages over the use of golden devices as a signal source.
Golden devices: ideal path or detour?: Vector Signal Generator R&S SMV
Excellent signal source for scalar network analysis: Microwave Signal Generator R&S SMR
Network analysis systems are indis-pensable measurement tools in research, development, production and service. Conventional scalar network analyzers with simple broad-band diode sensors were predominant in the past, but have now been largely displaced by vector systems with selective receivers. Scalar network analyzers are used in great number only in the high-frequency microwave
range starting at 20 GHz, where they are a cost-effective alternative. The broadband characteristics of the diode sensors, however, place high demands on the harmonic, subharmonic and spurious suppression of the signal generators used so that measurement errors are kept to a minimum. This is
where the qualities of the R&S SMR really shine (FIG 1).
Excellent signal source for scalar network analysis: Microwave Signal Generator R&S SMR
Medium-power VHF TV transmitter for all terrestrial standards: VHF Transmitter Family R&S NM/ NW7001
Rohde & Schwarz has expanded its portfolio of TV transmitters: the medium-power VHF Transmitters
R&S NM/ NW7001 are now offered in addition to the well-established liquid-cooled TV transmitters for VHF and UHF [1, 2] and the air-cooled medium-power and low-power UHF transmitters [3, 4].
Medium-power VHF TV transmitter for all terrestrial standards: VHF Transmitter Family R&S NM/ NW7001
Data packets on the Internet: Many paths lead to one destination: Protocols ensure communication
Using the Internet is nothing special anymore. Even the combination of Internet and digital broadcasting - data broadcasting - is possible without any difficulties. But what is behind these technologies? This article examines the basic principles and explains the Internet protocol, IP.
Data packets on the Internet: Many paths lead to one destination: Protocols ensure communication
Nationwide radiomonitoring system for Nicaragua: NEWSGRAMS - International
Spectrum monitoring and spectrum management system for Nicaragua
Nationwide radiomonitoring system for Nicaragua: NEWSGRAMS - International
Newsgrams: International
Rohde & Schwarz supplies transmitter systems for first German DVB-T transmission region
Newsgrams: International
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Phone: +49 89 41 29 - 0
Fax: +49 89 41 29 12 164
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Internet: http://www.rohde-schwarz.com/
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