News from Rohde & Schwarz

Magazine for test & measurement and radio communication

News from Rohde & Schwarz Issue 1997/II - 154

• High-quality digital modulation up to 3.3 GHz: Signal Generator SMIQ

  Vector Signal Generator SMIQ represents a new generation of signal generators from Rohde & Schwarz with digital modulation capability. SMIQ also features precise I/Q modulation for broadband communication applications, short measurement times through fast synthesis and a large dynamic range thanks to its high spectral purity. Plus SMIQ comes with a real innovation: its fading simulator option allows predefined 6- or 12-path fading.
  High-quality digital modulation up to 3.3 GHz: Signal Generator SMIQ
  
  

• Top in full-compliance testing: EMI Test Receiver ESCS30

  The highlights of EMI Test Receiver ESCS30: frequency range from 9 kHz through to 2.75 GHz in one compact, favourably-priced instrument, complete with VGA colour display and macros for automatic testing, which makes an external process controller mostly superfluous.
  Top in full-compliance testing: EMI Test Receiver ESCS30
  
  

• VHF-UHF ATC radiocommunications go multichannel: Series 200 multichannel radio equipment

  Rohde & Schwarz has expanded the existing Series 200 single-channel radio equipment for VHF and UHF communications by adding multichannel equipment. As full-featured system equipment the new generation enables locally or remotely controlled radiocommunications on any channel in these frequency ranges.
  VHF-UHF ATC radiocommunications go multichannel: Series 200 multichannel radio equipment
  
  

• Custom-tailored shortwave communications: HF Broadband System XB2900

  Components for combining several 1-kW or 500-W transmitters/receivers extend the successful HF Transceiver Family XK2000 to HF Broadband System XB2900. Simultaneous transmitter operation on a broadband antenna on different channels and output power increases are now possible. Since the RF power components are passive and broadband, frequency-agile and reliable data and speech links can be set up according to customer requirements with the tried and tested options of the XK2000 family.
  Custom-tailored shortwave communications: HF Broadband System XB2900
  
  

• Processing digital TV signals for cable headends: QAM Transmitter CT100QT

  A small cost-effective module is all that is needed to add digital programs to analog TV programs in cable headends. QAM Transmitter CT100QT, which is fully compatible with the successful CATV Headend System CT200 from Rohde & Schwarz, processes digital vision and sound signals for feeding into the broadband cable together with analog signals.
  Processing digital TV signals for cable headends: QAM Transmitter CT100QT
  
  

• New transmitters for nationwide coverage: Paging Transmitters SU330/SD330

  Ultra-high availability at low cost of ownership is ensured by VHF and UHF Paging Transmitters SU330 and SD330 for nationwide paging networks according to ERMES, POCSAG, FLEX and APOC standards. No matter whether for new installation, retrofitting or upgrading – Paging Transmitters SU330/SD330 can be installed in an extremely short time and adapted to the specific task simply by software.
  New transmitters for nationwide coverage: Paging Transmitters SU330/SD330
  
  

• Radiomonitoring LEO communication satellites: Satellite Tracking Antenna AS809

  Rohde & Schwarz has developed a broadband microwave antenna to be used for varied monitoring tasks in future satellite communications. This antenna can receive signals emitted by fast-moving LEO (low earth orbiting) satellites in addition to signals from geostationary satellites.
  Radiomonitoring LEO communication satellites: Satellite Tracking Antenna AS809
  
  

• CMD80: measurements for CDMA and AMPS mobiles:

  Rohde & Schwarz, a world market leader in mobile-radio measurements, and its US partner company Tektronix have jointly developed a mobile-phone tester for the US mobile-radio system CDMA to IS95 standard: Digital Radiocommunication Tester CMD80 (FIG 1).
  CMD80: measurements for CDMA and AMPS mobiles:
  
  

• Low-cost continuity check in board testing using Cocheck II:

  Continuity check module Cocheck II for use with TSA [1– 3] and TSU [4] tester families allows most soldering defects and insertion faults of ICs to be detected without expensive digital test configuration.
  Low-cost continuity check in board testing using Cocheck II:
  
  

• Coherence analysis in audio technology:

  Digital signal processing allows new technical features to be implemented in the field of audio, like for instance reduction of the stored or transmitted audio data by utilizing the masking effects of the ear (MPEG). To achieve the desired perception, signals can be modified accordingly with the aid of digital signal processing. This may be obtained for instance with effect processors and declickers in the studio as well as with intelligent hearing aids, in which the gain is varied either frequency-selectively or depending on the type of signal.
  Coherence analysis in audio technology:
  
  

• Long-term monitoring of sound-broadcast and TV transmitters:

  Like equivalent organizations in other countries, German broadcasting and media companies as well as the Federal Post and Telecommunications Office (BAPT) have the duty to continuously monitor transmitter parameters.
  Long-term monitoring of sound-broadcast and TV transmitters:
  
  

• PC software for MPEG2 dream team DVG/DVMD:

  The two software products Stream Combiner (option for MPEG2 Generator DVG) and Stream Explorer (option for MPEG2 Measurement Decoder DVMD) allow very flexible handling of MPEG2 transport streams. Variation and analysis of data streams is possible down to bit level and overview is guaranteed thanks to the user-friendly Windows interface.
  PC software for MPEG2 dream team DVG/DVMD:
  
  

• Digital modulation and mobile radio (V):

  3.2 Minimum shift keying and Gaussian minimum shift keying
  Digital modulation and mobile radio (V):
  
  

• Better HF radiocommunications for smaller vessels with Marine Dipole HX002M1:

  With shortwave propagation over the sea, groundwave communications can be established over considerably long distances; with ship-to-ship communications on the high seas it may even be possible to cover several hundreds of kilometers, depending on the transmitter power and bandwidth. In coastal areas and for ship-to-land communications, the groundwave coverage range becomes distinctly shorter.
  Better HF radiocommunications for smaller vessels with Marine Dipole HX002M1:
  
  

• New option for fast compression-point measurements with Vector Network Analyzer ZVR:

  An essential parameter for describing the linearity of an electronic circuit is the compression point (CMP) in addition to the intermodulation points (IP2 and IP3). Measurement of the 1-dB compression point, for instance, used to be a complex procedure until now. First, the small-signal gain of the device under test has to be determined for each frequency point.
  New option for fast compression-point measurements with Vector Network Analyzer ZVR:
  
  

• CATV Headend System CT200 supplies Liechtenstein with sound-broadcast programs:

  The cable headend installed by Rohde & Schwarz in Vaduz for the Liechtensteinische Kabelgesellschaft is now supplying the whole country with sound and TV programs. Since reception is extremely difficult due to the geographics of Liechtenstein, several receiving stations had to be set up integrating the control system into the main station. More than 50 analog TV programs, three digital TV packages, 31 VHF FM programs, a country-specific channel for the transmission of parliament sittings using a fixed camera, and a local service channel for district council sittings are fed into the network.
  CATV Headend System CT200 supplies Liechtenstein with sound-broadcast programs:
  
  

• Repair System SMD-RS11 – a tool for state-of-the-art servicing of printed circuits:

  The use of surface-mounted devices (SMDs) in electronic circuits has increased rapidly in the past few years. In some areas, their proportion in the circuitry makes up over 90%.
  Repair System SMD-RS11 – a tool for state-of-the-art servicing of printed circuits:
  
  

• IMCOS – a message handling and control system for naval forces:

  Modern naval vessels are highly complex systems not only with regard to the technologies involved, but also because of the permanent exchange of information taking place between the subsystems of the vessel and other vessels or land-based stations, which makes effective communication means essential.
  IMCOS – a message handling and control system for naval forces:
  
  

• Test signals with analog and digital modulation for vehicle information systems:

  With more and more cars on the road, intelligent traffic control and management systems are gaining in importance in keeping the traffic flow going, especially in cities and on highways. The first, large-area system for complete traffic management was introduced in Tokyo and its surrounding areas in 1996 under the name VICS (vehicle information and communication system).
  Test signals with analog and digital modulation for vehicle information systems:
  
  

• Swiss rail’s new radio measurement carriage: heading for the future:

  Train radiotelephony has for long been an indispensable part of railway traffic. This important means of communication differs from other radio networks mainly in that good coverage is required only along the railway track and that there is no need for area coverage like with a mobile-radio network.
  Swiss rail’s new radio measurement carriage: heading for the future:
  
  

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/I - 153
• Issue 1996/IV - 152
• Issue 1996/III - 151

radiocommunications - test and measurement - broadcasting - it security

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