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.
21 Results
Audio Analyzers UPD and UPL with their large variety of functions provide practically all measurement procedures required in audio technology. Thanks to the Universal Sequence Controllers UPD-K1 and UPL-B10, which are available as options, the user is able to considerably expand the range of functions to suit his particular requirements. It is possible, for instance, to add complete measurement functions - eg measurement of ohmic resistance - and to read out, convert or reload sweep results or to add new scale labelling (eg group delay). Another example is the analysis of sweep curves and the display of results in a window next to the curve. As far as softkey labelling and functions are concerned, operation of the sequence control programs is analogous to the softkey control of the UPD/UPL graphics display.
04-Jun-1998 | AN-No. 1GA16
Interferences on audio transmissions, which happens only from time to time, are very difficult to be measured. This application note describes a method, used by the audio analyzers UPL and UPD, to monitor test tones without any interruption and detecting even the shortest clicks.
04-Jun-1998 | AN-No. 1GA31
In many applications, circuitries with automatic gain control are used, for example in the fields of tape recording or hearing aids. This application note describes the typical characteristic of these control circuitries and the difficulties in measurements using oscilloscops. With the audio analyzers UPL and UPD these measurements can be done much easier, the analysis can be done manually or automatically by using a special software tool.
04-Jun-1998 | AN-No. 1GA32
Present-day sound studios are hardly conceivable without A/D converters. A/D converters are essential components when music is recorded and they directly influence the recording quality. The current Application Note describes a test program permitting automatic measurements of all parameters of sound studio equipment with the aid of Audio Analyzers UPD or UPL. Measuring converter chips with mostly serial interfaces that are not to standard are not the subject of this Application Note.
26-Jun-1998 | AN-No. 1GA30
The UPL Audio Analyzer can be remote-controlled via the IEEE bus or the RS-232-C interface. Test results are output either individually or in blocks. ASCII or binary files such as setup files can be transferred to the audio analyzer from an external controller. This Application transfers files from the audio analyzer to an external controller via the serial interface. Utility programs for the audio analyzer and the external controller (PC) are required.
15-Nov-2001 | AN-No. 1GA42
When measuring audio components with unknown transients, the experienced engineer watches the settling of the DUT before accepting a measured result to be valid. The settling function in the UPL/UPD simulates this process and automates it by continuously comparing the measured value with a number of measured values stored before. A measured value is only accepted as being valid if it is within the tolerance limits entered by the user. This application note explains the settling process and gives hints for practical use.
03-Jun-1998 | AN-No. 1GA12
Many measurements in audio applications have to be monitored for compliance with specified limit values. Therefore, sometimes a whole series of measurements have to be compared with a fixed limit value, in other case it might be necessary to define different tolerances for example for different frequency ranges. Both can be done using Audio Analyzer UPD or UPL. This application note covers the different possibilities of limit checking, it demonstrates how to edit limit files and presents a program to easily generate files for checking the limits of frequency response measurements. Furthermore the display modes for different kinds of references are explained.
04-Jun-1998 | AN-No. 1GA33
In modern telephoning, dual-tone dialling is used more and more often. Every symbol to be transmitted is coded by two frequencies which are sent at the same time. To ensure a trouble-free call setup, transmission has to be done within defined tolerances. For measuring these kind of dialling signals, the measurement equipment has to fulfill high requirements. This application note describes how the measurements can be carried out by using the Audio Analyzers UPL or UPD. It also presents a measuring program for this application.
04-Jun-1998 | AN-No. 1GA23
For the transmission of digial audio data, different data formats are in use. The AES/EBU format, which is used in professional applications, as well as the S/P DIF format used in consumer electronics, transmit the audio data in time multplex for both channels. Additonal bits in the data stream cover complementary information, respectively are used for error detection.The generation and the analysis of those protocol data using the audio analyzers UPD or UPL is the topic of this application note. An extract of the AES3 standard informs about the basic definitions.
04-Jun-1998 | AN-No. 1GA15
A great number of measurements have to be performed to determine the quality of FM tuners. This Application Note presents a program that permits these measurements to be carried out in line with DIN EN60315-4.
11-Feb-2003 | AN-No. 1GA43
Being faced with a wide variety of standards and manufacturer’s specifications, test engineers may often find it difficult to keep track of necessary audio measurements. This is aggravated by the fact that modern audio analyzers offer a multitude of settings. This application note serves as an aid offering a collection of typical setups that make it possible to get started with measurements immediately. In addition, information is given on associated standards, on the adaptation of the setups to specific measurement tasks as well as on the evaluation of results.
04-Jun-1998 | AN-No. 1GA36
There are proposals for broadband measurements on hearing aids, for example the proposed standard ANSI S3.42. Such measurements are intended to simulate more accurately the behaviour of hearing aids under normal hearing conditions also in the presence of ambient noise. Audio Analyzer UPD fitted with High-Speed Option UPD-B3 makes it possible already now to generate the proposed test signal and to perform all the related measurements including coherence and transfer functions. These measurements may become more and more important in the future but have scarcely been performed up to now as they require highly complex test equipment. Audio Analyzer UPD enables the user to measure to tomorrow’s standards even today.
04-Jun-1998 | AN-No. 1GA34
To analyse the quality of CD players, lots of measurements have to be done. This application note presents a program, which combines these measurements to an automatically running sequence and gives a printout of the results. A test CD is used for generating the test signals. Here the Audio Test Disc UPA-CD from Rohde & Schwarz is used, which holds all required signals in a sequence permitting automatic measurements to be carried out, without the need of controlling the CD player. In addition, this application note explains the measurements and informs about the different standards.
16-Feb-1998 | AN-No. 1GA21
To analyse the quality of tuners, lots of measurements have to be done. This application note presents a program, which combines these measurements to an automatically running sequence and gives a printout of the results. In addition, it explains the measurements and informs about the different standards.
16-Feb-1998 | AN-No. 1GA24
This application note investigates and discusses the influence of wideband noise on harmonic distortion measurements.
06-Jul-2011 | AN-No. 1GA55
This Application Note presents a program which combines FM tuner measurements to form automatically running sequences in line with DIN EN60315-4. It is an extension of Application Note 1GA43 and can be used with the Generator R&S SML and the Audio Analyzer R&S UPV or UPL.
15-Dec-2006 | AN-No. RAC-0502-0012
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
Versatile Software Tool for Rohde & Schwarz Instruments
RSCommander is a versatile software tool for a wide range of Rohde & Schwarz spectrum-, network analyzers, signal generators and oscilloscopes. It allows for automatic instrument discovery, making screenshots, reading traces, file transfer and simple script creation.
24-Dec-2017 | AN-No. 1MA074
PESQ measurements employ a level adaptation algorithm and are hence widely insensitive to absolute level. However, if the tests are performed via a speech codec, the driving level of the codec has an influence on the MOS result. Therefore careful alignment of the level is required. This application note provides an application program which runs on the Audio Analyzer R&S UPV or R&S UPV66 and can be used to calibrate signal levels for the PESQ measurement.
30-Jun-2011 | AN-No. 1GA50
The use of Rohde & Schwarz device drivers under VEE software is not complicated. However, a number of factors are involved, the errors that occur are often difficult to diagnose. This application provides easy and detailed support for installation and troubleshooting using National Instruments or Agilent GPIB boards.
20-Dec-2012 | AN-No. 1MA035
This application note outlines two different approaches for remote-controlling Rohde & Schwarz instruments out of MathWorks MATLAB:The first one uses VISA connection and direct SCPI commands.The second approach takes advantage of Rohde & Schwarz VXI plug&play instrument drivers and MATLAB Instrument Control Toolbox.
12-Jun-2017 | AN-No. 1MA171