Search Application Notes & Cards
Learn how to configure Rohde & Schwarz products to fit your application. Search our database by product, technology, or application to find relevant technical documents.
Search Application Notes & Cards
Learn how to configure Rohde & Schwarz products to fit your application. Search our database by product, technology, or application to find relevant technical documents.
1117 Results
This application note shows how to perform Bluetooth transmitter measurements with the CMU200 in a reduced signaling mode, in which the protocol handshake between the Bluetooth Equipment Under Test, the EUT, and CMU200 is skipped. This additional CMU200 feature allows both more flexible and faster RF testing of Bluetooth modules. A step-by-step example with SMIQ demonstrates the principles and serves as a reference for integrating this method in user-specific test strategies.
04-Feb-2003 | AN-No. 1MA49
This application note describes an effective method for generating test setups, performing measurements and producing test reports with the hand-held Spectrum Analyzer R&S FSH3
31-Jan-2003 | AN-No. 1EF50
This application note provides information about measurements on pulsed signals with a spectrum analyzer. Examples show the practical realisation of measurements like pulse width, peak power and mean power, and the limitations of spectrum analyzer measurements. A method for long time average power measurement is explained.
16-Jan-2003 | AN-No. 1EF48
Testing multi carrier power amplifiers of the 3rd Generation requires test signals with a high dynamic range. This application note describes how a 4 carrier 3G WCDMA signal can be generated and measured with the application software SET_MC4. The software sets up to 4 SMIQ03HDs to generate the signal, and an FSU or FSQ to immediately evaluate and analyze the Adjacent Channel Leakage Ratio (ACLR) of the power amplifier. The setups are controlled remotely.The SET_MC4 source code is also included. Modify the code to meet your individual requirements or adopt the IEEE-commands into your own setup script.
13-Dec-2002 | AN-No. 1MA62
A new calibration method, presented by John R. Juroshek (NIST), offers fast and accurate determination of the equivalent source match of three-port devices like power-splitters and directional-couplers. The measurement result is directly displayed as normal trace on the R&S ZVM or R&S ZVK and can be stored in the most common data-formats for further processing and documentation.
13-Dec-2002 | AN-No. 1EZ51
Determining the noise figure of a component can be difficult in unshielded lab environments. Measuring small noise figures (less than 3 dB) and reproducing the results is sometimes not possible. These difficulties are caused by interference effects (electric fields) that can occur in any environment. A suitable remedy is a measurement environment able to shield the Device Under Test (DUT) against all interfering fields in the range up to 3 GHz. When used in conjunction with a spectrum analyzer and Noise Measurement Software FS-K3, the Shielded Box ZA-SB10 provides a complete noise measurement system.
16-Oct-2002 | AN-No. RSH01
This application note describes essential test setups and test procedures for 3GPP power amplifiers especially for production lines.
04-Sep-2002 | AN-No. 1MA40
Power amplifiers for WCDMA/3GPP base stations should have the best possible spectral purity and smallest intermodulation distortion, in order to prevent disturbance of the neighbouring channels. To test such amplifiers, signal generators are required that can generate WCDMA signals with low noise and intermodulation over a very wide dynamic range. The R&S SMIQ03HD signal generator with its outstanding Adjacent Channel Leakage Ratio (ACLR) performance is especially designed for these applications. This application note describes how to use SMIQ03HD to get the best performance with 3GPP single and multi carrier signals.
02-Sep-2002 | AN-No. 1GP52
A lack of lip synchronicity is an effect that can severely impair the quality of TV reception. With modern digital signal processing, this audio-to-video delay occurs much more often than in earlier times when analog signal generation was used. The total delay can reach several hundred milliseconds, which is immediately noticeable on a TV home receiver. To prevent such impair-ments, the audio-to-video delay must be measured.
27-Aug-2002 | AN-No. 7BM44
GTSL (Generic Test Software Library ) is part of the production test systems R&S TS7100/ TS7180, simplifies very much test programming with the CMU200 and can be used together with the ”Test Executive” TestStand ® from National Instruments. This application note shows how GTSL can be implemented outside a TestStand ® environment and describes the accompanying source code of a demo ”Test Executive” developed in Microsoft ® Visual C++.
02-Jul-2002 | AN-No. 1SC01
This application note provides information about the ACLR measurement with noise correction. The basic requirements and the limiting factors of a spectrum analyzer are explained. Dynamic range improvements by means of a noise correction is presented. Measurement examples show the practical realisation ACLR measurements.
16-May-2002 | AN-No. 1EF49
This Application Note describes how to configure and calibrate R&S ZVR network analyzers for conversion gain measurements of devices with two ports that have different impedances. Thus accurate measurements on frequency-converting devices such as low noise converters of sattellite receivers are possible.
16-May-2002 | AN-No. 1EZ50
7BM30 Digital TV,DTV,DVB,MPEG2,Broadcasting,Television,SFQ,EFA Phase Jitter in DTV Signals Phase Jitter in DTV Signals 7BM30 Digital TV,DTV,DVB,MPEG2,Broadcasting,Television,SFQ,EFA Phase Jitter in DTV Signals Related products
16-May-2002 | AN-No. 7BM30
White noise of a defined power is superimposed on the DVB signal. From the noise and the modulated DVB signal, the S/N respectively the C/N ratio in dB (with consideration of the 'roll off' factor) can be calculated. After conversion, the corresponding BER is obtained for each S/N value.
08-May-2002 | AN-No. 7BM03
Two test setups which demonstrate the Bit Error Rate (BER) test function of either an SMIQ (with option B21) or an AMIQ (with option B1) are described. The tester generates the FSK modulated RF or IF signal as well as carries out the BER test. The analog Marker FM Demodulator from an FSP/FSU spectrum analyzer is used as an online FSK demodulator.
06-May-2002 | AN-No. 1MA57
SMIQ/ABFS TV shows the SMIQ or ABFS display remotely on any Windows™ PC
02-May-2002 | AN-No. 1GP54
1SP01 Production Produktionstestsysteme- Funktionstest von Businesstelefonen Produktionstestsysteme- Funktionstest von Businesstelefonen 1SP01 Production Produktionstestsysteme- Funktionstest von Businesstelefonen Related products
08-Apr-2002 | AN-No. 1SP01
The Radiocommunication Tester CRTx can be used to test various aspects of GSM based mobile telephones. For this, a large number of testcases written in accordance with the GSM Rec. 11.10-1 are available. These tests are written in Borland C programming language, are supplied as source code, may also be modified by the user and are normally performed manually.
07-Mar-2002 | AN-No. 1CMAN30E
When monitoring transmission systems it is often necessary to control the monitoring equipment and to check the measurement results from a remote station. The user may also be interested to know which transmission data cause an error or violate a standard. Rohde & Schwarz offers several instruments that meet all these requirements in the field of digital TV transmission. This application note gives an overview of the design and use of a DTV monitoring system made up of the above-mentioned instruments and meeting the requirements.
15-Feb-2002 | AN-No. 7BM38
This is a very special application note for all those who have seen the ZVatch (ZVR watch) and not really believed the nice red curve on its face. This curve can actually be generated with a Vector Network Analyzer ZVR.
25-Jan-2002 | AN-No. 1EZ28
The DTV recorder generator DVRG is a useful tool for recording and replaying MPEG2 transport streams in addition to uncompressed video (ITU -R B.T. 601).[[ br />Due to their length and data rate the streams can become very large and might not be able to transfer through the internal CD-R drive. This application note describes how a Microsoft network can be setup for a quick file transfer and remote operation of DVRG.
24-Jan-2002 | AN-No. 7BM07
A collection of frequently occurring customer questions on using the ZVR analyzer, calibration, virtual transform networks, and additional applications.
23-Jan-2002 | AN-No. 1EZ38
Especially with test receivers not comprising a built-in disk drive (ESHS10, ESVS10, ESVD, ESVB and ESPC) it is necessary to store instrument settings before a firmware update or before changing the battery of the static memory to be able to restore the settings later on. Frequently it is desirable to exchange settings or comprehensive data like transducer sets between receivers, or receivers have to be set up to suit different applications.
18-Jan-2002 | AN-No. 1EE20
All models of the receiver family ESXS are equipped with a remote-control interface to IEC 625-2 (IEEE 488.2). Via this bus almost all instrument settings can be effected, measurements triggered and test results read in by the PC.
18-Jan-2002 | AN-No. 1EE05
The constantly increasing number of telecommunication services and subscribers is putting more and more pressure on the availability of already scarse frequencies. Authorities responsible for monitoring and regulating the radio traffic are confronted with more and more complex problems relating to radiomonitoring and frequency management. Without exact data - a prerequisite for monitoring existing installations and planning new services - it is impossible to solve the problem. It is essential to use the proper measurement equipment. This Application Note deals with the following measurements: Measuring various signal parameters at defined frequencies. Monitoring emissions for compliance with specified limits for field strength, modulation depth/index, frequency deviation and offset.
18-Jan-2002 | AN-No. 1EE13
Rohde & Schwarz test receivers of the ESXS, ESS and ESXN series are equipped with a 3.5' floppy-disk drive so that receiver settings, scan results, limit lines, transducer factors and whole sets of transducers can be stored on a floppy disk and reloaded into the receiver. Data can only be loaded into the receiver type from which they have been stored. The reason is that data eg from an ESHS30, which operates in the frequency range from 9 kHz to 30 Hz, should not be loaded into an ESVS30 as the data of the two units may be incompatible to because of the different frequency ranges alone (ESVS30: 20 MHz to 1000 MHz). However, in some cases it may be desirable to load an ESVS20 file into an ESVS30, or an ESN file into an ESVN40.
18-Jan-2002 | AN-No. 1EE19
It is frequently desired to process the results stored on the floppy on a PC, eg for the generation of customer-specific test reports by means of a word processing system. To enable processing on an external PC, the binary data usually need conversion into an ASCII format. This is possible by means of the ESXS2ASC.EXE program. The program is available free of charge from your Rohde & Schwarz representative.
18-Jan-2002 | AN-No. 1EE21
In digital wireless communication systems one or multiple users are assigned to a physical RF channel. With analog systems only one user per carrier is possible. Output spectrum of the transmitter has to be restricted to the assigned channel in order to avoid interference with the neighbor channels. With the switch over to digital modulation formats more user per channel are possible. They share one channel by using only part of the time for transmission (Time Division Multiplex Access, TDMA) or by coding the transmission by orthogonal sequences for distinction to other users (Code Division Multiples Access, CDMA). Beneath the restriction of modulation spectrum with TDMA systems also time behavior of the transmitted signal is critical. One reason is that in a multi-user situation only one user is allowed to transmit within his assigned time slots. Another reason is that by switching a carrier on and off spectrum of the transmitter splatters and causes additional interference in other RF channels.
17-Jan-2002 | AN-No. 1EF32
The following application note describes the function and operation of user menus for FSE Spectrum Analyzers including option Vector Signal Analysis (FSE-B7). For measurements according to the PCS 1900 standard user menus are provided, which perform settings on FSE for Base Station testing required in the standard. The menu and the accompanying setups are stored on a floppy disk. For operation of the menus firmware version 1.40 or higher is required. Option Vector Signal Analysis FSE-B7 has to be installed for the use of the application menu.
17-Jan-2002 | AN-No. 1EF24
In addition to frequency, power and long-term stability, short-term stability or its equivalent, phase noise, is an important characteristic of signal sources. For example, the phase noise of conversion oscillators of receivers obtained in the presence of a strong signal determines adjacent-channel sensitivity. In the case of transmitters, the phase noise of the oscillator together with the modulator characteristics is responsible for the power generated in adjacent channels. The phase noise of oscillators or synthesizers and the relevant measurements therefore play an important role in radio transmission systems.
16-Jan-2002 | AN-No. 1EF16