News from Rohde & Schwarz
Magazine for test & measurement and radio communication
News from Rohde & Schwarz Issue 2000/IV - 169
Cellular Phone Production Test Platform TS 7100: Compact,flexible and ready to go for mass production
TS7100 is a compact, ready-to-go test platform for use in the mass production of mobile phones, i. e. for PCB tests, RF adjustments and final tests. It can handle all common mobile-radio standards worldwide and is planned to be upgraded to support third-generation mobile radio (3G). In its design, the focus was on easy inter-facing with customer-specific manu-facturing processes besides maximum throughput. Worldwide customer support is guaranteed by regional Rohde & Schwarz integration centers.
Cellular Phone Production Test Platform TS 7100: Compact,flexible and ready to go for mass production
Protocol Tester PTW60 for Bluetooth applications: Comprehensive protocol tests to BluetoothTM qualification program
One of the prerequisites for acceptance of Bluetooth technology* by the user and thus successful and wide-spread application is full interoper-ability of the different implementa-tions. To ensure this interoperability, the special interest group (SIG) has defined a qualification program that every product must pass to go to market under the Bluetooth label.
Protocol Tester PTW60 for Bluetooth applications: Comprehensive protocol tests to BluetoothTM qualification program
Universal Radio Communication Tester CMU200: Measuring bit error rate on GSM mobiles
The test modes defined by GSM standardization committees prescribe how to measure the receiver characteris-tics of GSM mobile phones. This is the kind of application that CMU200 with its advanced concept excels in.
Universal Radio Communication Tester CMU200: Measuring bit error rate on GSM mobiles
Signal Generator SMIQ: Simulating channel models for 3GPP fading tests
TS7100 is a compact, ready-to-go test platform for use in the mass production of mobile phones, i. e. for PCB tests, RF adjustments and final tests. It can handle all common mobile-radio standards worldwide and is planned to be upgraded to support third-generation mobile radio (3G). In its design, the focus was on easy inter-facing with customer-specific manu-facturing processes besides maximum throughput. Worldwide customer support is guaranteed by regional Rohde & Schwarz integration centers.
Signal Generator SMIQ: Simulating channel models for 3GPP fading tests
Signal Generator SMIQ: TETRA T1 test signals to standard
Signal Generator SMIQ: TETRA T1 test signals to standard
Signal Generators SML02/03: Economy class extended to 3.3 GHz
The SML01 economy generator was launched a year ago, a signal source for the frequency range 9 kHz to 1.1 GHz.. Based on this successful unit, Rohde & Schwarz has developed follow-on Signal Generators SML02 and SML03, creating an instrument family that continues the excellent technical characteristics of SML 01 up to 2.2 GHz (SML02) and 3.3 GHz (SML03).
Signal Generators SML02/03: Economy class extended to 3.3 GHz
I/Q Modulation Generator AMIQ/ Signal Generator SMIQ: HiperLAN/2 signals with OFDM Simulation Software WinIQOFDM
HiperLAN/2 and IEEE 802.11a, the new standards for wireless LAN, use OFDM modulation, which has proved itself also in digital broadcasting systems (DAB, DVB-T). With OFDM Simulation Software WinIQOFDM for generators AMIQ and SMIQ (FIG 1), Rohde & Schwarz meets the increasing demand for units that generate such signals.
I/Q Modulation Generator AMIQ/ Signal Generator SMIQ: HiperLAN/2 signals with OFDM Simulation Software WinIQOFDM
Power combiners for UHF Transmitters NH/NV7000: Different transmitter power ratings made easy
The liquid-cooled UHF Transmitters NH7000 (analog TV) and NV7000 (DVB-T) are notable for their high economic efficiency and reliability. The new cascaded power combiners for these transmitters allow implementation of a whole variety of different output power ratings.
Power combiners for UHF Transmitters NH/NV7000: Different transmitter power ratings made easy
Multichannel Video Quality Analyzer DVQM: Multichannel monitoring in digital TV broadcasting networks
The introduction of the European DVB standard produced a virtually overnight increase in available TV programs. This meant new requirements for automatic, continuous monitoring of picture and sound quality in digital TV broadcasting networks in terms of price and space efficiency. Rohde & Schwarz has taken up the challenge and, with Multichannel Video Quality Analyzer DVQM, presents a highly compact but powerful test platform for simultaneously monitoring up to twelve TV channels.
Multichannel Video Quality Analyzer DVQM: Multichannel monitoring in digital TV broadcasting networks
Continued from No. 168: Measurements on MPEG2 and DVB-T signals (2)
Part 1 of the refresher topics dealt with key measurements in the studio as well as monitoring of the feeder link between the studio output and the transmitter input. This time, mea surements on the actual DVB-T transmitter are looked at.
Continued from No. 168: Measurements on MPEG2 and DVB-T signals (2)
DF antennas for every purpose: From HF to UHF, stationary and mobile
When Rohde & Schwarz launched a new generation of digital direction finders several years ago, a new family of DF antennas appeared at the same time and has been contin-uously added to. The antennas can be used for both Digital Monitoring Direction Finders DDF0xM and Digital Scanning Direction Finders DDF0xS, which feature three receiver modules. A separate antenna family is provided for the single-channel DDF 190.
DF antennas for every purpose: From HF to UHF, stationary and mobile
SITLink: Secure and confidential communication on leased lines
Everyone is talking about mobile communication, wireless around the world using exorbitant bandwidths. The leased line usually recedes into the background when such solutions are discussed. But it is often forgotten that the leased line is an approved communication medium for transmitting large data quantities at low cost. The purpose of SITLink is to provide confidential communication on such transmission routes.
SITLink: Secure and confidential communication on leased lines
Test Tips: Measuring noise figure on amplifiers in pulsed mode:
To save power, amplifiers in TDMA mobile phones are only fed with current during the active slot. For this purpose, the bias voltage of the amplifier is usually applied in pulsed form, in the case of GSM for example with a pulse width of about 1/8 of the total 4.615 ms period. The noise figure, an important parameter also in power amplifiers, can only be determined with conventional measuring equip-ment if the amplifier is in a continuous mode, which may overload it and corrupt the result. Now there is a convenient way of determining the noise figure of amplifiers with a pulsed power supply: using Spectrum Analyzer FSP, Noise Measurement Software FS-K3 and a function or pulse generator.
Test Tips: Measuring noise figure on amplifiers in pulsed mode:
Test Tips: Accurately measuring drift on BluetoothTM transmitter modules:
The Bluetooth* specifications contain a number of tests to be performed on transmitter modules. One of them is looked at here. This test tip explains how to measure frequency drift of Bluetooth transmitters very accurately, e. g. for module adjustment in equipment production. This test and others, which can be conveniently carried out with Spectrum Analyzers FSE and FSIQ, are detailed in an application note.
Test Tips: Accurately measuring drift on BluetoothTM transmitter modules:
Technical documentation: HTML online help: Expert knowledge available at a mouse click
Modern measuring equipment and application programs have numerous functions - and the volume of user documentation increases with product complexity. With the number of pages in a manual, the time spent finding what you are looking for increases, too. HTML online help with its automatic search and navigation tools offers ideal support.
Technical documentation: HTML online help: Expert knowledge available at a mouse click
Measuring noise figure on amplifiers in pulsed mode:
To save power, amplifiers in TDMA mobile phones are only fed with current during the active slot. For this purpose, the bias voltage of the amplifier is usually applied in pulsed form, in the case of GSM for example with a pulse width of about 1/8 of the total 4.615 ms period. The noise figure, an important parameter also in power amplifiers, can only be determined with conventional measuring equipment if the amplifier is in a continuous mode, which may overload it and corrupt the result. Now there is a convenient way of determining the noise figure of amplifiers with a pulsed power supply: using Spectrum Analyzer FSP, Noise Measurement Software FS-K3 [1] and a function or pulse generator.
Measuring noise figure on amplifiers in pulsed mode:
Different topics: Information as pdf-file
Different topics: Information as pdf-file
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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