News from Rohde & Schwarz
Magazine for test & measurement and radio communication
News from Rohde & Schwarz Issue 2003/II - 178
TETRA radio systems: TETRA - the digital standard for
professional mobile radio
TETRA, the worldwide digital standard for professional mobile radio, offers excellent speech quality, high data transmission rates and secure, encryptable connections.
TETRA radio systems: TETRA - the digital standard for
professional mobile radio
TETRA radio systems: ACCESSNET ® -T - the digital mobile radio system from Rohde & Schwarz
On board from the start R&S BICK Mobilfunk, the competence center for mobile radio communication in the Rohde & Schwarz group, collaborated on the ETSI standardization of TETRA – the best insurance that ACCESSNET®-T professional mobile radio systems from Rohde & Schwarz conform fully to standard. Since 1995 the company has been a member of the Memorandum of Understanding (MoU), the European association...
TETRA radio systems: ACCESSNET ® -T - the digital mobile radio system from Rohde & Schwarz
TETRA radio systems: ADONIS - the national ACCESSNET ® -T security radio network in Austria
In Austria a nationwide, standardized digital mobile radio network for government authorities and relief and rescue organizations is being set up. It fulfills the requirements of the Schengen agreement and allows international cooperation with neighbouring countries. For this purpose, the Austrian ministry of the interior commissioned the Viennabased company master-talk as the network operator to provide the necessary digital radio services in defined quality...
TETRA radio systems: ADONIS - the national ACCESSNET ® -T security radio network in Austria
TETRA radio systems: NOAH - emergency help in a flash via ACCESSNET ® -T
The modernization of the analog public safety radio network is currently being discussed in Germany. The network is about 30 years old, is no longer state of the art and, above all, does not meet today’s safety requirements...
TETRA radio systems: NOAH - emergency help in a flash via ACCESSNET ® -T
WCDMA Test System R&S TS8950W: Conformance test system for
WCDMA
The WCDMA Test System R&S TS8950W expands the Rohde & Schwarz portfolio of RF conformance test systems and provides an all-in-one solution suitable for development tests as well as for the certification of terminal equipment. The new test system for manufacturers and independent test laboratories performs all transmitter, receiver and performance tests according to the 3GPP test specification TS 34.121 fully automatically.
WCDMA Test System R&S TS8950W: Conformance test system for
WCDMA
2 in 1: Software option for 2G/ 3G system simulation: Protocol Tester R&S CRTU-G/-W
The new software option combines the R&S CRTU-G (for GSM/ GPRS / EDGE) and R&S CRTU-W (for UMTS / WCDMA-FDD) protocol testers to form an expandable and versatile 2G / 3G system simulator (FIG 1).
2 in 1: Software option for 2G/ 3G system simulation: Protocol Tester R&S CRTU-G/-W
Test methods and functionalities for location services: Protocol Tester R&S CRTU-G
Being able to determine the position of a mobile phone opens up a number of interesting applications that fall under the heading of location services (LCS). These services provide mobile phone users with information specific to their current position. Because of these new technical capabilities, network operators and manufacturers of mobile phones are faced with additional test requirements that are fully covered by the GSM Protocol Tester R&S CRTU-G (FIG 1).
Test methods and functionalities for location services: Protocol Tester R&S CRTU-G
Fast transmitter and receiver measurements on WCDMA base stations: Universal Radio Communication Tester R&S CMU300
The R&S CMU300 (FIG 1) now provides transmitter and receiver measurements in one instrument, not only for the GSM mobile radio standard but for WCDMA as well. The new option R&S CMU-K75 for mea surements on 3GPP base station transmitters complements the existing WCDMA generator for tests on 3GPP base station receivers (option R&S CMU-K76 [1]).
Fast transmitter and receiver measurements on WCDMA base stations: Universal Radio Communication Tester R&S CMU300
Signalling and measurements on GSM-AMR mobile phones: Universal Radio Communication Tester R&S CMU200
Everyone is talking about high data rates and innovative data applications. But the development of classic voice transmission is also not at a standstill. The latest innovation in this field is adaptive multirate (AMR), and it is specified across systems for both UMTS and GSM. The R&S CMU200 provides high-quality measurement technology for AMR.
Signalling and measurements on GSM-AMR mobile phones: Universal Radio Communication Tester R&S CMU200
EGPRS signalling with incremental redundancy: Universal Radio Communication Tester R&S CMU200
With newer and newer innovations, standardization committees have been trying to increase data throughput in mobile radio systems and reduce infrastructure costs. Through the use of a different modulation mode, the data rate of EGPRS is up to three times higher than that of GPRS. An additional increase in data throughput is possible by using incremental redundancy.
EGPRS signalling with incremental redundancy: Universal Radio Communication Tester R&S CMU200
Application software for precise vector signal analysis: Signal Analyzer R&S FSQ
The new R&S FSQ-K70 software package expands the application range of the Signal Analyzer R&S FSQ (FIG 1) for high-precision measurements of the modulation parameters of digitally modulated signals. With its large bandwidth of 28 MHz and user-configurable demodulators for all common modulation modes, the enhanced R&S FSQ is an extremely flexible tool for vector signal analysis.
Application software for precise vector signal analysis: Signal Analyzer R&S FSQ
Versatile EMS and EMI measurements for the automobile sector: EMC Measurement Software R&S EMC32-A
EMC Measurement Software R&S EMC32-A (automotive) from Rohde & Schwarz is a powerful tool that is specially tailored to measurements in the automobile sector in line with ISO 11451 / 2 and CISPR25 standards as well as to manufacturerspecific measurement procedures.
Versatile EMS and EMI measurements for the automobile sector: EMC Measurement Software R&S EMC32-A
Better system sensitivity through preamplifiers: EMI Test Receivers R&S ESIB26 / R&S ESIB40
High attenuation values significantly limit the total sensitivity of a test system in the microwave range. Only the use of a broadband lownoise preamplifier makes it possible to fulfill the high sensitivity requirements defined for measuring radiated emissions (EMI) in compliance with standards.
Better system sensitivity through preamplifiers: EMI Test Receivers R&S ESIB26 / R&S ESIB40
Limit lines and transducer factors ready for download: EMI Test Receivers R&S ESIB
The EMI Test Receivers R&S ESIB [*] support generation and storage of virtually any number of limit lines and transducer factors with the aid of an easy-to-use table editor. However, it takes a certain amount of time to edit a large number of tables. For this reason, as a special service the limit lines of the most important EMC standards and the transducer factors of the most common transducers in an R&S ESIB-specific file format can be downloaded from the Rohde & Schwarz website.
Limit lines and transducer factors ready for download: EMI Test Receivers R&S ESIB
DTV low-power transmitters - modular and space-saving: UHF Transmitter Family R&S SV7002
Following the positive market response to the low-power Transmitter Family R&S SV7000 (50 W to 200 W), Rohde & Schwarz has developed two additional amplifiers for the lower power range and enhanced them with a four-way coupler for higher output power. Together with the new DTV Exciter R&S SV702 with its integrated central control unit (CCU) and the optional R&S NetCCU as an expanded CCU for standby configurations, the result is a very compact and economical solution for the 5 W to 420 W power range.
DTV low-power transmitters - modular and space-saving: UHF Transmitter Family R&S SV7002
Automatic and adaptive precorrection of digital TV transmitters: DTV Exciters R&S SV700/ R&S SV702
Rohde&Schwarz has developed an automatic precorrection function for digital TV transmitters. Since the digital Exciter R&S SV700/ R&S SV702 (FIG 1) [*] is modular in design, even transmitter systems already in use can be retrofitted with this module.
Automatic and adaptive precorrection of digital TV transmitters: DTV Exciters R&S SV700/ R&S SV702
SNR and MER of digitally modulated signals with additive noise: The right way to measure
This test tip describes for different digital TV transmission standards the correlation between the superimposed noise in the channel (carrier-to-noise ratio, or C/N) and the maximum measurable signal-to-noise ratio (SNR) in the test receiver. Furthermore, it portrays software that automatically determines the bit error ratio (BER) as a function of C/N.
SNR and MER of digitally modulated signals with additive noise: The right way to measure
Seeing clearly through the thicket of signals: Automatic Modular Monitoring System R&S AMMOS®
R&S AMMOS® (automatic modular monitoring of signals) is a universal family of systems from Rohde & Schwarz for monitoring analog and digital signals in the HF, VHF and UHF frequency ranges. The base system presented here (FIG 1) is designed for narrowband signal processing in the HF range from 10 kHz to 30 MHz.
Seeing clearly through the thicket of signals: Automatic Modular Monitoring System R&S AMMOS®
Digital VXI-based receiver for 20 MHz to 3.6 GHz: VHF/UHF Receiver R&S EM050
The new VHF/ UHF Receiver R&S EM050 (FIGs 1 and 2) is another vital component in the state-of-the art VXI receiver and analyzer family from Rohde & Schwarz, opening up the 20 MHz to 3600 MHz frequency range. It combines outstanding RF characteristics with the powerful signal processing of state-of-the-art technology.
Digital VXI-based receiver for 20 MHz to 3.6 GHz: VHF/UHF Receiver R&S EM050
Broadband communication T&M: T&M trends in broadband communication
The introduction of digital TV means that engineers will have to become familiar with new test parameters and the T&M instruments that support them. This article provides an overview of current trends in broadband communication T&M based on today’s measuring equipment.
Broadband communication T&M: T&M trends in broadband communication
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/
radiocommunications -
test and measurement -
broadcasting -
it security
sitemap