ASTi's Model Builder Utilities Version 4.4c (download) adds an automated test routine called RIUTEST that provides improved diagnostic checks for Remote Interface Unit (RIU) audio and digital interfaces.
RIUTEST executes a stand-alone loopback test that verifies the performance of RIUs in isolation from ancillary devices and cables. The test routine allows users to quickly and easily test the basic operation of RIU interfaces and determine the source of problems.
Basic functions are:
Successful test results prove that
The tests do not provide objective audio quality figures of merit. To judge audio quality, perform additional subjective listening tests or use 3rd party test and measurement equipment. Description of these test procedures is outside the scope of this application note.
The test routine requires two key components:
The routine tests one user-specified RIU at a time. All other RIUs connected to system DSP(s) are inactive during the test procedure.
This application note covers: