R&S^®UPL16 Audio Analyzer

The Audio Analyzer UPL16 can be used in system applications in different ways:UPL16 together with Digital Radiocommunication Tester CRTxThis application is ideal for type approval and development labs. For CRTx the software package CRTKAUD is required to operate also the speech coder of the CRTx, available for FR (full rate), EFR (enhanced full rate) and HR (half rate) test mode. The test cases are started from the user interface of the CRTx, the UPL16 is controlled via IEEE bus. The results are displayed on the UPL16 and transferred to CRTx. Together with the UPL16, acoustical measurements are now added to the large variety of tests provided by CRTx. UPL16 as part of GSM Simulator TS8916The combination of UPL16 and CRTx is fully integrated in the TS8916 system. Performance and operation, concerning the control of UPL, activation of test cases and speech coder via CRTKAUD, as well as result handling are practically identical on CRTx and TS8916.UPL16 together with Digital Radio- communication Tester CMD52,55,65 or CMU200 This is the ideal and cost-effective combination for testing the acoustical quality in development, quality assurance, production, etc. The CMD or CMU sets up a call to the mobile via the RF link. Then the test cases are started from the user interface of the UPL16 and the results are displayed on the audio analyzer. For some of the tests, the speech codec (FR mode) is needed, which has to be implemented in the CMD or CMU.

Test cases according to GSM 11.10, section 30

The GSM 11.10 recommendation describes 15 test cases for acoustical testing of GSM mobiles. With UPL16 all these measurements can be carried out. For type approval only 7 test cases are mandatory. These are marked with a * in the list below. These tests are validated together with CRTx. 30.1. Sending frequency response *30.2. Sending loudness rating *30.3. Receiving frequency response *30.4. Receiving loudness rating *30.5.1. Side tone masking rating *30.5.2. Listener side tone rating30.6.1. Echo loss30.6.2. Stability margin *30.7.1. Sending distortion *30.7.2. Receiving distortion30.8. Side tone distortion30.9.1. Out-of-band signals sending30.9.2. Out-of-band signals receiving30.10.1. Idle channel noise sending30.10.2. Idle channel noise receivingListener side tone rating requires additional hardware for sound field generation.

DAI operating modes

DAI to MSThis is the normal operating mode which should always be used when connecting the UPL to a DAI mobile to perform the acoustical test cases. The UPL is part of the system simulator (SS).DAI to SSThe UPL simulates a mobile (MS) and thus can be connected to the DAI of a system simulator (SS). This operating mode can be used to test the DAI of an SS.AUX to SSA second (auxiliary) DAI is implemented. Reserved for future use. Identical functions as DAI to SS.