Specifications

2.54

Applications Manual

Revision 1.11Prism Sound dScope Series III

Additional help during testing

When starting the launcher script, the operator will be prompted to select whether additional help is

required in either (or both) of the following areas:

Test methods;

Test specifications (pass/fail limits);

If either of these is selected, then additional message boxes are generated during running of each

test which describe the selected parameter(s) for that test.

Note about Reference Level

The first test listed in the tests menu is the 'Reference Level' test. This test establishes an ideal 'full-

scale' amplitude reading for the Dolby Digital device under test. This level is used as a reference in

most of the other tests, and so it is important that the Reference Level test is performed first. Failure

to do so will result in an error message when other tests are attempted.

Collection of results

When a test from the test menu has been executed, its button becomes italicised in the test menu to

indicate that it has been completed. The results of each graphical test test are saved as an EMF file,

in preparation for inclusion in a document at the end.

The files are saved in a subfolder which is made up of the name of the product and its serial number.

The operator is prompted for these at the beginning of the test, and exported graphs are then saved

to a subfolder of the dScope's Graph Exports folder of the form <Graph Exports Folder>\Dolby\5_1-

channel\Product\SerialNum

e.g. if the Product name is "A360" and the serial number is "043", and the dScope's Graph Exports

folder is left as the default, then the folder will be:

<dScope program folder>\Graph Exports\Dolby\5_1-channel\A360\043\

Note: Unlike the Dolby Digital two-channel tests, results are available only during the test and are not

written to a Word document. This feature is a planned addition for the future.

Customising the tests

This document describes the automatic execution of the Dolby Digital 5.1-channel tests, one at a

time, from a tests menu under the control of a central 'launcher script'. The script loads a dScope

Configuration for the selected test, and then starts the test, prompting the operator to play the relevant

track on the test DVD. The results of each test are presented for operator scrutiny, but precise

'pass/fail' limits are not applied (principally because few limits are specified by Dolby for the tests).

Since the launcher script and Configurations are 'soft', it is possible to customise the process

according to requirements. For example:

The execution of whichever tests were required could be automated as a single operation, with

track-prompts;

Pass/fail limits could be applied, with an overall pass/fail report generated;

Note that minor or temporary changes to a test Configuration can be made manually before clicking

the button to start the test.