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1. and select the appropriate codec and rate 2 4 CDMA2000 The service option is selected on the CDMA2000 signalling page Mobile Station Control 1st Service Option SO 3 Speech X Figure 4 Setting the service option in the main page of CDMA2000 signalling 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 7 Settings on the R amp S CMW500 CDMA2000 The speech codec must be enabled in the Config page of the CDMA2000 signalling user interface The following settings apply for NB EVRC according to service option 3 Scenario Standard Cell Enable Speech Codec RF Input RX i f RF Frequency GRF Power Physical Layer E Reverse Power Control amp Time Service Configuration Accept Speech Calls Accept Packet Calls 1 Loopback Service i Speech Service i Voice Coder Echo Delay EB Emh Variable Rate Codec Test Data Service Packet Data Service amp Network i System Parameters System ID Number we Output TX Accept All Calls Reject gt Codec 2 00 Only applicable for Service Option S068 S070 S073 x CDMA2000 CDMA2000 1 CDMA2000 1 Signaling Parameter CDMA2000 Signaling OFF Figure 5 Setting the parameters for narrowband speech SO3 on the CMW500 The CMW500 also allows wideband EVRC connections according to service option 73 codec operating point 0 Please2. peak output level is 1V For the input there are two different settings Handset or Speech Codec respectively with 0 1 V full scale peak input level and Handset low or Speech Codec low respectively with 1 4 V full scale peak input level 1 2 1 Decoder Calibration The Decoder Cal function outputs a full scale sinewave with a frequency of 1 kHz from the CMU200 speech output This functionality can be used to determine the analog full scale output level by means of an appropriate measurement Note that the Decoder Cal function is only available in an active call although the mobile is not involved in the signal path 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 3 Introduction Speech input and output level in the CMW500 1 2 2 Encoder Calibration The Encoder Cal function establishes a digital connection from the A D converter to the D A converter of the speech codec In this operational mode the input level to the speech input can be adjusted such that the analog output level equals the level measured during decoder calibration This input level is then the full scale input level of the analog speech codec input The internal analog gain settings equal those of the Handset low or Speech Codec low operation Therefore this operational mode has to be used during all measurements Note that the Encoder Ca
3. see the settings below for this operational mode RF Input RX 4 RF Frequency RF Power Physical Layer Reverse Power Control Time Service Configuration Accept Speech Calls Accept Packet Calls Loopback Service E Speech Service i Voice Coder Echo Delay B Enh Variable Rate Codec Encoder Operating Point Rate i ie Rate Restriction Initialize Voice Coder S ffm i E Average Encoding Rate Standard Cell Accept All Calls Reject Codec v 2 00 Only applicable for Service Option S068 S070 S073 0 8 5 kbps Auto Initialize CDMA2000 CDMA2000 1 TX Meas CDMA2000 1 RX Meas Signaling Parameter Signaling Figure 6 Setting the parameters for wideband speech SO73 COP 0 on the CMW500 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 8 Settings in R amp S UPV Applications 3 Acoustic Tests with Option UPV K9 Settings in R amp S UPV Applications 3 1 Acoustic Tests with Option UPV K9 The UPV K9 programs store the decoder output level in terms of a so called decoder loss Agec Agec iS a Virtual value which means the attenuation of the analog RMS output signal Vo relative to 0 dBU 775 mV RMS for a digital level of 0 dBm0 3 14 dBFS on the digital side The full scale peak output voltage Vo Fspk can be calculated as Viel V Syl O F100 775 V IV J2 s
4. 62 up to version 1 2 3 2 1 1 Equivalence Method e Read the encoder calibration value from the 1GA50 1GA62 application program and enter the value as full scale peak input value in the user interface of the CMW500 audio measurement unit e Read the decoder calibration value from the 1GA50 1GA62 application program and enter the value as full scale peak output value in the user interface of the CMW500 audio measurement unit 3 2 1 2 CMU independent Method e Set recommended full scale peak input and output values in the user interface of the CMW500 audio measurement unit 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 10 Settings in R amp S UPV Applications Application Programs 1GA50 and 1GA62 e Open an existing encoder calibration ccl file in a text editor and enter the full scale peak input value from the CMW500 audio measurement user interface in V e Save the modified file file type All files and load the file as encoder calibration in the downlink tab of the 1GA50 1GA62 program e Open an existing decoder calibration ccl file in a text editor and enter the full scale peak output value from the CMW500 audio measurement user interface in V e Save the modified file file type All files and load the file as encoder calibration in the downlink tab of the 1GA50 1GA62 program 3 2 2 1GA62 from version 1 3 The full scale peak value
5. 92 User Manual http www rohde schwarz com en search common library_63448 html facet facet CommonLibraryT ype amp facet CommonLibraryT ype Manuals amp term UPV K92 R amp S CMW500 User Manual http www rohde schwarz com en search common library_63448 html facet facet CommonLibraryT ype amp facet CommonLibraryT ype Manuals amp term CMW500 Application note 1GA50 Calibration Tool for PESQ Speech Quality Tests http www rohde schwarz com en search applications_63466 html term 1GA50 amp facet facet Applic ationType amp facet ApplicationT ype Application 2520Note Application note 1GA62 Test Automation Tool for POLQA and PESQ Speech Quality Tests http www rohde schwarz com en search applications_63466 html term 1GA628 amp facet facet Applic ationType amp facet ApplicationT ype Application 2520Note 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 12 Ordering Information Application Programs 1GA50 and 1GA62 5 Ordering Information Ordering Information Type of instrument background noise Description Instrument type Ordering number Audio Analyzer R amp S UPV or 1146 2003 02 R amp S UPV66 1146 2003 66 Base software for mobile phone R amp S UPV K9 1402 0008 02 tests UMTS GSM Mobile phone tests R amp S UPV K91 1402 0108 02 CDMA2000 Mobile phone tests R amp S UPV K92 1402 0608 02 Background noise contro
6. Frequency Offset UL Random Frequency Offset TCH Assignment epeated FACCH Repeated SACCH AMR AMR NB FR GMSK AMR NB HR GMSK AMR NB HR 8PSK r 3 AMR NB FR GMSK 0 Speech Immediate Release cf F re close after channel change 12345 very early r r Figure 2 GSM signaling configuration for speech The speech codec must be enabled in the Config page of the GSM signaling user interface Set Data Source to Speech and select the appropriate codec and rate 2 3 WCDMA GSM The speech codec must be enabled in the Config page of the WCDMA signaling user interface 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 6 Settings on the R amp S CMW500 CDMA2000 WCDMA os Standard Cell Enable Data end to end M E RF Settings Physical Downlink Settings amp Physical Uplink Settings Connection Configuration UE term Connection Voice je SRB Data Rate DL 13 6 kbps 7 UL 13 6 kbps id Caller ID 764332637249279 I Voice Speech v Loopback Os Narrow Band AMR A 12 2 kbps gt 1 6 60 kbps amp Video Single SRB ignaling Tee Mode arameter Packet Data _ a Network CDMA UE H HSDPA ignaling S OFF Config Figure 3 WCDMA signaling configuration for speech Set Data Source to Speech
7. Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G speech Test Applications Application Note Products R amp S CMU200 R amp S UPV K9 R amp S CMW500 R amp S UPV K61 R amp S UPV R amp S UPV K63 The combination of R amp S CMU200 and R amp S UPV is in use for various tests of mobile phone speech functionality such as acoustic tests according to 3GPP 26 132 or speech quality tests according to ITU T P 862 PESQ or ITU T P 863 POLQA This application note explains how to replace the R amp S CMU200 in these tasks with R amp S CMW500 Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 17 Jul 14 1GA65_0e Thomas Lechner 1GPM Table of Contents Table of Contents 1 1 1 2 1 2 1 1 2 2 1 3 2 1 2 2 2 3 2 4 3 1 3 1 1 3 1 1 1 3 1 1 2 3 1 2 3 2 3 2 1 3 2 1 1 3 2 1 2 3 2 2 aiigete i Ce n Mea EEE ies E E E E a eer re 3 OVONVICW AARTE este eee ee eee teci 3 Speech input and output level in the CMU200 sssseeeesssceresssceeees 3 Decoder Calibration ccceecceseesseesesseeenseeeeeeneesnaeseseeeeeseeeseeeeeseaeseanenenseaenes 3 Encoder Calibration ccsseccesccesseeeeseeeenseeeeeensessaeeeseeeensnaeenseeesseesaseaeenseanees 4 Speech input and output level in the CMW500 cessseereesseeeees 4 Settings on the R amp S CMW500 ssscsessssssssssseesesesseesneereees 5 Audio Meas
8. e 0 921 S dace 20 O FSpk The encoder input level is stored as full scale RMS input voltage Vi Fsrms Therefore the full scale peak input voltage Vi Fspk can be calculated as x Vi _rspk v2 ViFsrms 3 1 1 Versions up to 2 x 3 1 1 1 Equivalence Method This method allows direct replacement of the CMU200 by CMW500 without any change in the K9 program e Read the age and Vi Fsrms Values from the UPV K9 program using menu item Calibration gt Show selected devices e Calculate the full scale peak values according to the formulae above e Enter the full scale peak input and output value in the user interface of the CMW500 audio measurement unit Example Selected Calibration Devices Usage 2 Manufacturer Type SerialNo Date and Time Calib value File b Ambient noise field Default 02 22 2008 16 17 null D CMU CBT Decoder Default 04 11 2014 11 52 DA CMU CBT Encoder Default 04 11 201 Virsims D CMW Decoder RAS CM Ww500 12345 05 08 2014 14 3 3 9315 D 5 Phd Enondar ntg Fhiann 17M5 NRINAIMA ART TAT 11RA NA Figure 7 CMU calibration values in the K9 program With the example values above the full scale peak values are Vo Fspk 1 0432 V Vi Fspk 1 4609 V 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 9 Settings in R amp S UPV Applications Application Programs 1GA50 and 1GA62 3 1 1 2 CMU independ
9. ent Method e Set recommended full scale peak input and output values in the user interface of the CMW500 audio measurement unit e Inthe UPV K9 program set the codec type in Options gt System simulator to Electric e Divide the full scale peak input value entered in the user interface of the CMW500 audio measurement unit by V2 and enter the result as calibration value in Calibration gt Electric connections gt replacing encoder e Divide the full scale peak output value entered in the user interface of the CMW500 audio measurement by V2 and enter the result as calibration value in Calibration gt Electric connections gt replacing decoder 3 1 2 Versions from 3 x e Set recommended full scale peak input and output values in the user interface of the CMW500 audio measurement e Inthe UPV K9 program set the codec type in Options gt System simulator to CMW e Inthe UPV K9 program enter the full scale peak output value from the CMW500 user interface in mV as decoder calibration value and the full scale peak input value from the CMW500 user interface in mV as encoder calibration value in menu item Calibration gt Codec gt CMW 3 2 Application Programs 1GA50 and 1GA62 The decoder and encoder calibration values in the application programs 1GA50 and 1GA62 are full scale peak values same as in the user interface of the CMW500 audio measurement unit 3 2 1 1GA50 and 1GA
10. est Applications 2 Introduction Overview 1 Introduction 1 1 Overview The R amp S CMU200 radio communication tester herein below further called CMU200 together with the R amp S UPV audio analyzer herein below further called UPV forms a test platform for various measurement tasks in the speech functionality of mobile phones Examples are acoustic testing according to 3GPP TS 26 132 and speech quality evaluation according to ITU T P 862 PESQ and ITU T P 863 POLQA With all these applications the audio level has significant influence on the results Therefore correct adjustment of levels at the analog speech interfaces between the radio communication tester and the audio analyzer is required With the advent of new wireless radio access technologies like LTE R amp S CMW500 wideband radio communication tester herein below further called CMW500 is gradually replacing the CMU200 The method of adjusting the levels at the analog input and output of the speech codec is fundamentally different between CMU200 and CMW500 This application note explains the differences and gives instruction on the use of the CMW500 in well known speech test applications 1 2 Speech input and output level in the CMU200 The analog speech interface of the CMU200 has a fixed but uncalibrated input and output level For this reason the CMU firmware provides special functionality for adjusting the levels of the test platform The nominal full scale
11. l function is only available in an active call The signal at the speech input is at the same time sent as downlink speech signal to the connected mobile 1 3 Speech input and output level in the CMW500 Other than the CMU200 the CMW500 has no dedicated speech input and output Instead AF input 1 and AF output 1 of the audio measurement unit are used for this purpose For this reason the full scale peak input and output levels can be set in the user interface of the audio measurement unit The conformity of the analog speech input and output levels with the settings in the user interface are part of the calibration procedure of the CMW500 in factory and service Therefore decoder and encoder calibration functionality is not required 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 4 Settings on the R amp S CMW500 Audio Measurement 2 Settings on the R amp S CMW500 2 1 Audio Measurement Scenario External Analog Speech Analysis v Figure 1 Settings in the Audio Measurement page The scenario must be set to External Analog Speech Analysis The full scale input and output levels can be set with the softkeys on bottom of the screen 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 5 Settings on the R amp S CMW500 Settings Network Connection Frequency Offset DL
12. l softw R amp S UPV K98 1424 2003 02 Measurements using R amp S UPV K101 1424 2203 02 Universal Sequence Controller R amp S UPV K1 1401 7009 02 SW for PESQ Measurements R amp S UPV K61 1401 7309 02 Listening quality analysis POLQA to ITU T rec P 863 R amp S UPV K63 1402 1156 02 Tester Universal Radio Communication R amp S CMU200 1100 0008 02 Tester Wideband Radio Communication R amp S CMW500 1201 0002K50 For help on the configuration of R amp S CMW500 please contact local R amp S sales 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 13 About Rohde amp Schwarz Rohde amp Schwarz is an independent group of companies specializing in electronics It is a leading supplier of solutions in the fields of test and measurement broadcasting radiomonitoring and radiolocation as well as secure communications Established more than 75 years ago Rohde amp Schwarz has a global presence and a dedicated service network in over 70 countries Company headquarters are in Munich Germany Environmental commitment e Energy efficient products e Continuous improvement in environmental sustainability e ISO 14001 certified environmental management system Certified Quality System ISO 9001 Regional contact Europe Africa Middle East 49 89 4129 12345 customersupport rohde schwarz com Nor
13. s for decoder and encoder can be directly entered in the user interface Enter the full scale peak value of the CMW500 speech input as encoder calibration value and the full scale peak value of the CMW500 speech output as decoder calibration value Poiga and Delay Test Tool J loj o x Uplink Downlink Loop on Network Side Loop on Mobile Side Monitor Test Control Results Delay Meas Delay Results Connection Show Schematic Show Instructions cs CMU C cs CMW C VoLTE w ext MS VoLTE on CMW Decoder Cal Enter Value Browse 1000 m Encoder Cal erer vate Browse 1000 m Figure 8 Buttons for direct entry of decoder and encoder calibration values D s UPVA LGA62 CMW_Dec_1V ccl D UPVA 1GA62 CMW_Enc_1 ccl Click the respective Enter Value button for entering the full scale peak decoder output and encoder input values from the CMW The Connection radio buttons have only influence on the displayed schematics and instructions not on the other functionality of the macro 1GA65_0e Rohde amp Schwarz Replacing R amp S CMU200 with R amp S CMW500 in 2G and 3G Speech Test Applications 11 Literature Application Programs 1GA50 and 1GA62 4 Literature 1 R amp S UPV K9 K91 User Manual http www rohde schwarz com en search common library_63448 html facet facet CommonLibraryT ype amp facet CommonLibraryT ype Manuals amp term UPV K91 R amp S UPV K9 K
14. th America 1 888 TEST RSA 1 888 837 8772 customer support rsa rohde schwarz com Latin America 1 410 910 7988 customersupport la rohde schwarz com Asia Pacific 65 65 13 04 88 customersupport asia rohde schwarz com China 86 800 8 10 8228 86 400 650 5896 customersupport china rohde schwarz com This application note and the supplied programs may only be used subject to the conditions of use set forth in the download area of the Rohde amp Schwarz website R amp S is a registered trademark of Rohde amp Schwarz GmbH amp Co KG Trade names are trademarks of the owners
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