News from Rohde & Schwarz

Magazine for test & measurement and radio communication

News from Rohde & Schwarz Issue 1997/IV - 156

• Radiolocation from 10 kHz to 3 GHz now with portable equipment: Miniport Receiver EB200 and Handheld Directional Antenna HE200

  Radiolocation in the frequency range 10 kHz to 3 GHz has now become portable: with Miniport Receiver EB200 and active Handheld Directional Antenna HE200 for searching and monitoring emissions, detecting interference and locating miniature transmitters even in difficult terrain – with performance characteristics so far unparalleled by equipment of this size. Moreover, when accommodated in a rack, EB200 is a cost-effective, compact receiver that can be remotely controlled via LAN interface.
  Radiolocation from 10 kHz to 3 GHz now with portable equipment: Miniport Receiver EB200 and Handheld Directional Antenna HE200
  
  

• Exclusive type certification of PCS1900 mobile stations in the US: PCS1900 System Simulator TS8915

  The European mobile radio standard GSM is conquering the globe, and the US market is an integral part of this development. Like in Europe, type certification for mobile stations to PCS1900 has become obligatory since the middle of this year. Rohde & Schwarz is the only company to offer the required test equipment: PCS1900 System Simulator TS8915.
  Exclusive type certification of PCS1900 mobile stations in the US: PCS1900 System Simulator TS8915
  
  

• Concept of EMI instrumentation has proven itself: EMI test receivers from 5 Hz to 26.5 GHz

  The adoption of the European EMC Directive 89/336/EEC at the beginning of the 90s has created a need for instruments that are able to perform accurate measurements in line with the applicable EN standard. Rohde & Schwarz took up this challenge in time by introducing a new EMI test receiver generation in 1991.
  Concept of EMI instrumentation has proven itself: EMI test receivers from 5 Hz to 26.5 GHz
  
  

• Multichannel signal source for CDMA: Signal Generator SMIQ + SMIQ-B42

  SMIQ is an extremely versatile instrument for the generation of digital modulation. Fitted with the optional modulation coder and data generator, it is capable of generating both TDMA and CDMA signals. Now a new, cost-effective software option is available that turns SMIQ into a powerful IS-95 CDMA signal generator. With this option, SMIQ can simulate the transmit signals of base and mobile stations.
  Multichannel signal source for CDMA: Signal Generator SMIQ + SMIQ-B42
  
  

• High-power RF amplifier for physical applications: 75 kW RF Amplifier VD741K1

  Physical applications in the field of particle acceleration and synchrotron radiation sources require safe high-power amplifiers with simple, reliable control, regulated amplitude and stable phase position. This is the domain of 75 kW RF Amplifier VD741K1 from Rohde & Schwarz.
  High-power RF amplifier for physical applications: 75 kW RF Amplifier VD741K1
  
  

• Start into digital terrestrial TV: DVB-T Modulator SDB-M

  Almost simultaneously with the adoption of the new terrestrial TV standard Rohde & Schwarz is introducing a matching digital modulation source: DVB-T Modulator SDB-M which is equally suitable for use with high-power TV transmitters and as a test transmitter in laboratories and production.
  Start into digital terrestrial TV: DVB-T Modulator SDB-M
  
  

• Precise S-parameter measurements are the key to modelling electric circuits:

  High-precision S-parameter measurement is the basis for characterizing a circuit component. The outstanding measurement accuracy of Vector Network Analyzer ZVR from Rohde & Schwarz [1] offers the possibility of efficiently modelling well-matched DUTs. Precision measurements call for ultra-modern calibration techniques and high-quality calibration standards along with excellent hardware.
  Precise S-parameter measurements are the key to modelling electric circuits:
  
  

• Networking digital direction finders for improving radiomonitoring efficiency and locating frequency-agile emitters:

  The rapidly increasing variety of communication media and growing shortness of suitable DF sites require widearea networking of DF instrumentation and operator positions of large radiomonitoring systems. A condition for networking is that the detected data are reduced and processed at the DF site considering that an extremely large volume of raw data is obtained by the direction finder when frequency-agile signals and short-term emissions are monitored. Rohde & Schwarz has taken up this challenge with scanning and monitoring direction finders of the DDF (digital direction finder) family coupled with new software.
  Networking digital direction finders for improving radiomonitoring efficiency and locating frequency-agile emitters:
  
  

• Planning and monitoring VHF and TV transmitters:

  The German Post and Telecommunications Office (BAPT) as well as the telecommunication organizations in other countries are responsible for frequency planning for VHF and TV transmitters together with broadcasting companies, for coordinating these transmitters with broadcasting companies at home and with relevant telecommunication organizations abroad and for monitoring the transmitter parameters. Mobile Spectrum Monitoring System for Broadcast Applications SMSB (FIG 1) from Rohde & Schwarz is an extremely cost-effective and technically advanced solution to efficiently perform these tasks.
  Planning and monitoring VHF and TV transmitters:
  
  

• New PropWiz software makes shortwave link prediction even more convenient:

  Communication via shortwave is influenced by a variety of factors that make it appear a rather changeable medium. The quality of shortwave transmission is substantially affected by weather conditions, position of sun, geographical location and number of suns pots, to name just a few parameters, which sometimes make it even impossible to establish a link between two points on the earth.
  New PropWiz software makes shortwave link prediction even more convenient:
  
  

• Digital Direction Finder DDF190 goes RAMON:

  Radiomonitoring System RAMON^® detects and monitors emissions in the frequency range 10 Hz to 18 GHz [1]. Thanks to the new driver for DDF190 [2], this direction finder (20 MHz to 3 GHz) can now also be integrated into customized radiomonitoring systems like Digital Scanning Direction Finders DDF0xS and Digital Monitoring Direction Finders DDF0xM. The direction finder is used together with Compact Receiver ESMC [4] and can be operated in fixed-frequency or search mode.
  Digital Direction Finder DDF190 goes RAMON:
  
  

• Digital modulation and mobile radio (VII):

  3.2.4 Architecture of GMSK modulator
  Digital modulation and mobile radio (VII):
  
  

• Insertion Units URV5-Z2 and URV5-Z4 for voltage, level and power measurements up to 3 GHz:

  Coaxial voltage measurement probes are among the standard accessories of RF voltmeters and power meters. Coming as insertion units, they are particularly versatile as they can be connected into a test circuit without interrupting the signal flow. They can thus be used for a wide variety of applications, such as monitoring tasks of any kind as well as level control and terminated power measurements.
  Insertion Units URV5-Z2 and URV5-Z4 for voltage, level and power measurements up to 3 GHz:
  
  

• From dual-mode to multimode radiocommunication tester: IS-136 standard now implemented in CMD80

  Digital AMPS TDMA system (IS-136 standard) is a mobile radio standard that has attained a degree of importance in the US and other countries almost equalling that of analog AMPS and CDMA. For this reason Rohde & Schwarz has decided to support this standard with its Digital Radiocommunication Tester CMD80, in addition to analog AMPS and CDMA already covered by this tester [1; 2].
  From dual-mode to multimode radiocommunication tester: IS-136 standard now implemented in CMD80
  
  

• Optional input interface for TV Test Transmitter SFQ:

  TV Test Transmitter SFQ (FIG 1) for testing analog and digital TV receivers and set-top boxes as well as ADR (Astra Digital Radio) receivers is used in development and production as well as in service and EMC test labs [1]. From the MPEG2 input signal SFQ generates a signal coded and modulated according to DVB specification up to a frequency of 3300 MHz.
  Optional input interface for TV Test Transmitter SFQ:
  
  

• ReFLEX25 and FLEX roaming in Signal Generator SME:

  Together with FLEX protocol option (SME-B41) Signal Generator SME was in the past already able to generate standardized messages of the FLEX radiopaging service and to simulate a FLEX base station which can be used as a general test signal source in the development and production of pagers.
  ReFLEX25 and FLEX roaming in Signal Generator SME:
  
  

• Rohde & Schwarz naval communications systems for joint Dutch-Spanish project:

  The increasing demand for naval communications – notably in the HF band – has led to the development of new concepts in recent years, which must also take into account the limited space for antennas onboard ships. A comparison with other navies shows that the Royal Netherland Navy has a great deal of experience in the field of HF broadband systems. This experience was put to use in the design and definition of the shipboard antenna system when planning of the Amphibious Transport Ship/Landing Platform Dock (ATS/LPD) was started in spring 1992 as a part of a joint Dutch-Spanish project.
  Rohde & Schwarz naval communications systems for joint Dutch-Spanish project:
  
  

• Passenger telephone system Jetcall 2000 up and away:

  Rohde & Schwarz and its French partner Mors have already installed 96 of the jointly developed terrestrial flight telecommunication systems in shortand medium-haul aircraft of Air France. After a year’s testing under commercial and technical aspects carried out on domestic and international flights, the French airline in June this year placed another order for fitting out 13 airplanes – among them Airbus A320, A321, A319 and Boeing 737 – as well as an option for another eight aircraft. The complete short- and medium-haul fleet of the Air France group will thus be equipped with Rohde & Schwarz/Mors units.
  Passenger telephone system Jetcall 2000 up and away:
  
  

• Simple bandwidth measurement in radiomonitoring:

  In radiomonitoring it is sometimes necessary to determine the bandwidth of a signal. This is usually performed with a test receiver, but now Radiomonitoring Receiver ESMC with Software Package ESMC-RAMON can also be used for this task.
  Simple bandwidth measurement in radiomonitoring:
  
  

• D-channel filter – essential contribution to increased security of ISDN telecommunication systems:

  By order of the German Information Security Agency (BSI), the Rohde & Schwarz subsidiary SIT, Gesellschaft für Systeme der Informationstechnik mbH, Berlin, is developing a device to increase the security of ISDN (integrated services digital network) telecommunication systems. This device performs filtering of the D channel which is used for ISDN control.
  D-channel filter – essential contribution to increased security of ISDN telecommunication systems:
  
  

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/

• Issue 1997/III - 155
• Issue 1997/II - 154
• Issue 1997/I - 153
• Issue 1996/IV - 152
• Issue 1996/III - 151

radiocommunications - test and measurement - broadcasting - it security

sitemap