Specifications
2.7
Applications Manual
© 2003-2005 Prism Media Products Ltd
Revision 1.11Prism Sound dScope Series III
3 AES17
The dScope can perform conformity testing of digital audio products (such as A-D or D-A converters),
according to the AES17 standard, quickly and easily. A set of simple-to-follow scripts and
accompanying configurations are provided that guide you through each test. These are installed
automatically from the dScope's installation CD; updates may be obtained from
www.prismsound.com, or by contacting Prism Sound or your local distributor. Contact details are
provided in the
General information
section.
Copies of the AES17-1998 standard can be purchases from
www.aes.org
, from where it is also
possible to download a single copy of the standard free of charge. Sections 3 and 4 of AES17-1998
outline many more definitions and also general measurement conditions not included in this
document.
The following section contains an
overview
of AES17 testing with the dScope.
3.1 Overview
The following sections describe how to perform the standard test methods outlined in AES17-1998
using Prism Sound dScope Series III.
To run the dScope's AES17 tests, either select the 'Applications:AES17' option from the default User
Bar (if configured), or else simply run the script 'AES17 Tests.dss' by selecting "Run Script" from the
Automation menu. This script provides access to all of the individual AES17 tests from a two-level
menu.
On running the script, the user is presented with the
I/O Set-up dialogue
in order to define the
configuration of the
EUT
, after which selection of the individual tests from the menus is limited to
those which apply to that type of EUT.
The buttons on the first menu correspond to the sub-sections in AES17. Each button opens up a sub-
menu containing buttons for each of the tests available; clicking on an individual test button
automatically loads the appropriate configuration and runs the test script. In between the tests, the
EUT I/O input and output configuration details can be modified by clicking the
[EUT I/O Setup]
button.
Also on each sub-menu is a help button, indicated by a question mark. This functions in a manner
very similar to the Windows "What's This?" help feature. Clicking on the help button turns on the help
feature which is indicated by the button turning green. At this point, the next test button selected will
open the relevant help page from this help manual instead of running the test.
The scripts automatically perform each test, prompting the user for any required information. In cases
where graphs are generated, it is possible to print the graph or to export it as a Windows metafile,
complete with a title, legend and notes, by using the Print/Export Graph dialogue box.
For detailed information about all of the dScope's AES17 tests, see the following
AES17 tests reference
section.
It is possible for users to construct their own scripts to run single or multiple AES17 tests without the
need for entry through the menu system. In this case, the appropriate section of 'AES17 Tests.dss'
(which includes loading of the appropriate dScope configuration and occasionally special weighting
filters) can be cut and pasted into the user's own script. It is possible to add features such as
automatic logging of results and graphs to a report document or database.