News from Rohde & Schwarz
Magazine for test & measurement and radio communication
News from Rohde & Schwarz Issue 1998/II - 158
Double frequency and benefit: Vector Network Analyzers ZVC
The ZVR family of network analyzers is growing fast. The two new members ZVCE and ZVC extend the frequency range of the analyzers from 4 GHz to 8 GHz, opening up a wide new range of applications.
Double frequency and benefit: Vector Network Analyzers ZVC
All-rounders in servicing GSM and DECT mobile phones: Digital Radio Testers CTS65 and CTS60
In Digital Radio Tester CTS65, Rohde & Schwarz now offers a compact, favourably priced multimode service tester for GSM mobile phones and for cordless phones to DECT standard. CTS60 is available for pure DECT applications.
All-rounders in servicing GSM and DECT mobile phones: Digital Radio Testers CTS65 and CTS60
Analog measurements in module production now even more efficient: Multifunction Module AMV for Test Systems TSA and TSU
The increasing density of components on PCBs coupled with the difficulty of accessing internal nodes via bed-of-nails fixture have put functional and final tests at PCB level to the fore. Rohde & Schwarz meets this challenge with its brand-new analog measurement technology for in-production testing of modules.
Analog measurements in module production now even more efficient: Multifunction Module AMV for Test Systems TSA and TSU
Digital audio broadcasting – reliable and economical: DAB Transmitters NA6… and NL6…
Following numerous international DAB pilot projects, the actual introduction of digital audio broadcasting is now beginning. This means that existing transmitter networks will be expanded to provide full coverage. Rohde & Schwarz has developed new DAB transmitters for both VHF band III and L band that meet not only present but also future requirements and offer high transmission quality and profitability.
Digital audio broadcasting – reliable and economical: DAB Transmitters NA6… and NL6…
DGPS-supported vehicle location with fast radio data: Vehicle Location System VELOS
Vehicle Location System VELOS is used to determine the position data of mobile objects and to transmit these data to a control center where the data are stored and displayed on a map and other user-defined tasks are performed. Data transmission is via a radio network that allows up to ten vehicles to be located per second. Alternatively, data can be transferred via a customer’s own radio data network or GSM.
DGPS-supported vehicle location with fast radio data: Vehicle Location System VELOS
Radiomonitoring in microwave range up to 40 GHz: Antenna Systems AC090, AC120, AC180, AC300
Rohde & Schwarz has developed steerable Antenna Systems AC090, AC120, AC180 and AC300 with parabolic reflectors of 90 cm to 3 m in diameter for radiomonitoring applications in the frequency range 1 GHz to 40 GHz. In addition to selectable reflector diameter, a large variety of feeds with different polarization, frequency ranges and preamplification are available for numerous missions.
Radiomonitoring in microwave range up to 40 GHz: Antenna Systems AC090, AC120, AC180, AC300
Fast direction finding of broadband and short-term signals: Digital Scanning Direction Finders DDF0xS
Digital Scanning Direction Finders DDF0xS are designed for extremely high search rates, making them ideal for interception and direction finding of broadband and short-term signals in the frequency range 0.5 to 1300 MHz. Multilevel data compression makes it possible to use these direction finders as automatic search tools in complex radiomonitoring and radiolocation systems.
Fast direction finding of broadband and short-term signals: Digital Scanning Direction Finders DDF0xS
Production test of RF modules with Universal Test System TSU, Radiocommunication Service Tester CMS and EMC test cell:
The number of electronic devices in automobiles has increased dramatically in recent years. They have made inroads into virtually all parts of the automobile and are no longer limited to top-of-therange models as used to be the case. Today electronic fuel injection, airbag and ABS are the standard minimum even in a small car. Considering that some 12 million vehicles are manufactured annually in Western Europe, with about a third coming from German plants, automotive electronic modules generally rank as typical mass products. But in contrast to other mass products, very high requirements are made where functional reliability and quality are concerned. This calls for comprehensive quality assurance in production besides all the necessary measures in design and development.
Production test of RF modules with Universal Test System TSU, Radiocommunication Service Tester CMS and EMC test cell:
Applications in and around fading:
Modern communication systems for speech and data – mobile radio, cordless telephones and pagers – transmit information by means of digital modulation. This means that all the information is modulated onto the transmit signal in the form of bits. The quality of the receiver in the transceivers used for this purpose is judged by measuring bit error rate at low receive levels. For this purpose a link is set up to the mobile radio (or base station) and a known data sequence is transmitted. The transceiver then sends ...
Applications in and around fading:
COM2000 – the functional software tool for shortwave communication:
Software package COM2000 is a versatile tool allowing data transmission with shortwave transceivers of the XK2000 family [1; 2] as well as configuration of radiocommunication processors from a PC. Transceivers XK2000 offer the most advanced features available for shortwave communication and are internationally recognized as representing the highest standard in quality and technology. Software package COM2000 with its extra features now rounds off the performance of this line of equipment.
COM2000 – the functional software tool for shortwave communication:
Correct usage of quantities, units and equations (II):
Physical phenomena are described qualitatively and quantitatively by physical quantities. Every value of a quantity can be represented as the product of numerical value and unit. Any variation of the unit (eg prefix ...
Correct usage of quantities, units and equations (II):
Signal Generators SME03A and SMIQ03A: two milestones on the way to faster measurements
The overall time required for a computercontrolled measurement is normally made up of the setting time for the signal source, the DUT settling time, the measurement time of the instrument, the time for data transmission and the time for the controller to run the program. Analyzing the individual components reveals weak points and provides clues for improvements.
Signal Generators SME03A and SMIQ03A: two milestones on the way to faster measurements
Twenty-four complete mobile-radio coverage measurement systems for China:
Guangdong Mobile Communication Corporation (GMCC), the network operator in China with the largest number of mobile-radio subscribers per province at present, contracted Rohde & Schwarz to deliver 24 complete Coverage Measurement Systems TS9955. With this project GMCC is taking an important step towards fast expansion of its mobile-radio networks. The coverage measurement systems are used to plan, optimize and monitor ...
Twenty-four complete mobile-radio coverage measurement systems for China:
Rohde & Schwarz – a partner for in-production testing of mobile phones:
Mobile and cordless phones are hightech products that are expected to operate reliably and errorfree to standards such as GSM, CDMA, TETRA or DECT. The manufacturer has to perform extensive tests during production to guarantee compliance with the above requirements. In general terms, the ...
Rohde & Schwarz – a partner for in-production testing of mobile phones:
200-A Four-Line V-Network ENV4200 for measuring RFI voltages at high currents:
200-A Four-Line V-Network ENV4200 is the latest of Rohde & Schwarz’s V-networks for measuring RFI voltages on power lines that carry very high currents (FIG). This joins the widely used 25-A Four-Line V-Network ESH2-Z5 covering the frequency range from 9 kHz to 30 MHz [1] and the smaller V-Networks ESH3-Z5 (two-line V-network, 16 A, 9 kHz to 30 MHz) and ESH3-Z6 (single-line V-network, 150 A, 0.1 MHz to 200 MHz) [2].
200-A Four-Line V-Network ENV4200 for measuring RFI voltages at high currents:
Design 2000, the new enclosure system:
Rohde & Schwarz is synonymous with electronic precision and mechanical perfection. This means a commitment to unite quality and value in a product. Based on this guiding principle the fifth enclosure generation – design 2000 – was developed. The new design meets all the criteria that modern electronic packaging has to fulfill, making it fully in tune with the wide range of T&M and communication products from Rohde & Schwarz beyond the year 2000.
Design 2000, the new enclosure system:
EMC Asia 97 – debut in Singapore:
The EMC Asia symposium, held in Singapore for the first time last autumn and intended for all Asian countries, met with a very positive response. The symposium was combined with workshops and an exhibition. Like European EMC events of this kind, the symposium was organized by Germany’s MESAGO Messe und Kongress corporation, which recorded 812 participants for more than 430 workshops and almost 50 exhibitors presenting their products in an area of about 1000 sqm. “Testing the Limits” was the motto of Rohde & Schwarz (FIG), whose product presentation focused around EMI Test Receivers ESCS30 from 9 kHz to 2.75 GHz and ESPC for 9 kHz to 2.5 GHz ...
EMC Asia 97 – debut in Singapore:
Valuables packed safely:
State-of-the-art electronics from Rohde & Schwarz was shown safely packed in edition 10/97 of the customer journal “Knürr direct”. The 19-inch racks and cabinets from Knürr keep out dust, water, heat and electromagnetic interference. Which makes them a safe and sure solution for the integration of high-grade electronics, like TETRA Test System TS8940 (photo far right) from Rohde & Schwarz, comprising TETRA simulator and TETRA protocol tester. This system was designed for verification, quality assurance and type approval to TBR35 (Technical Basis for Regulation) of TETRA base and mobile stations. In addition to determination of RF characteristics by the TETRA simulator, TBR35 also stipulates protocol measurements, which are performed by the TETRA protocol tester.
Valuables packed safely:
Reducing time to test GSM base stations:
Besides high accuracy and reproducibility of results, speed is of vital importance for in-production testing of GSM900/1800/1900 base stations. The following transmitter measurements are specified for the transceiver module of a base station: phase/frequency error, carrier power, power ramp, spectrum due to transients and spectrum due to modulation. For the receiver, the bit error rate is to be determined.
Reducing time to test GSM base stations:
Airspace safety and Austro Control: an excellent combination
More than 700 000 instrument flights were safely directed through Austria’s airspace by Austro Control in 1997, with up to 2700 flight activities every day. Austro Control, with headquarters in Vienna, emerged from the Austrian Federal Office of Civil Aeronautics in 1994 and has been kept really busy ever since: We do everything that in Germany is done jointly by air traffic control, the German Meteorological Service and the Federal Office of Civil ...
Airspace safety and Austro Control: an excellent combination
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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