Manual Operation Guide

Transcription

1 Agilent Technologies 8960 Series 10 Wireless Communications Test Set Manual Operation Guide Making 3GPP TS Tests Manually GSM/GPRS/EGPRS Mobile Test Application E1968A Revision A.04 GSM/GPRS Lab Application E6701D (including E6704A EGPRS) Revision D Copyright Agilent Technologies s1

2 Notice Information contained in this document is subject to change without notice. All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. This material may be reproduced by or for the U.S. Government pursuant to the Copyright License under the clause at DFARS (APR 1988). Agilent Technologies, Inc. Learning Products Department E. Mission Liberty Lake, WA U.S.A. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\e1968a_muiguide_titlepage.fm 2

3 Contents Introduction Making 3GPP TS Tests How do I make a GSM Bad Frame Indication (BFI) Measurement? Measuring 3GPP TS Section BFI How Do I Make a GSM Frame Erasure Rate (FER) Measurement? How do I make Modulation Accuracy Measurements? Measuring 3GPP TS Section Modulation Accuracy A. Test Set Configuration B. Start a Data Connection C. Start the Measurement D. Setup the Measurement E. How to view IQ Imbalance Results F. View the Modulation Accuracy Graphical Results How to Make an AMR In-Band Frame Error Measurement Measuring 3GPP TS Section IFER How Do I Make a Bit Error Measurement? Measuring the Bit Error Ratio How Do I Make a Block Error Measurement? Measuring GPRS/EGPRS Block Error How Do I Make an Output RF Spectrum Measurement? Measuring 3GPP TS / Output RF Spectrum How Do I Make a Phase and Frequency Error Measurement? Measuring 3GPP TS Section 13.1 Phase and Frequency Error How Do I Make a Power Versus Time Measurement? Measuring 3GPP TS Section 13.3 Power versus Time How Do I Make a Transmit Power Measurement? Measuring 3GPP TS GPRS Transmitter Output Power Measuring 3GPP TS EGPRS Transmitter Output Power

4 Contents Appendix Test Adherence to Standards Frequency Error and Phase Error Transmitter Output Power and Burst Timing Error Output RF Spectrum Reference Sensitivity Frequency Stability I/Q Tuning Measurement Dynamic Power Measurement EDGE Dynamic Power Measurement Analog Audio Measurements Spectrum Monitor Measurements Modulation Accuracy GSM Bad Frame Indication How Do I Set Up a Call? Setting Up the Call Parameters Establishing a Mobile Terminated Call Establishing a Mobile Originated Call How Do I Make Measurements on a Mobile? A. Establish a call B. Select measurements How Do I Change Call Parameters? How Do I Change Cell Parameters? A. Select the Cell Parameters menu B. Set a cell parameter How Do I Configure the Test Set for My Test System? A. Configure instrument information and setup B. Set amplitude offsets C. Check the message log How Do I End a Call?

5 Contents How to use the Adaptive Multi-Rate (AMR) Features General AMR Parameter Setup Check the Validity of Encoded Speech Data Change the Codec During a Call Stress Testing with Frequent Changes of Codec Mode Forcing Codec Mode Requests Change Parameters using RATSCCH Discontinuous Transmission (DTX) Handovers While an AMR Call is Active How Do I Use the Spectrum Monitor? Calibrating the Test Set Calibration Strategy Description Calibration Procedures

6 Introduction Introduction The intent of this guide is to help you quickly learn how to use the GSM/GPRS/EGPRS E1968A Test Application and the GSM/GPRS/EGPRS E6701D Lab Application to manually make mobile station receiver and transmitter tests as specified in the 3GPP TS Standard. The Appendix includes additional information to help you perform the 3GPP tests such as: Test Adherence to Standards table that shows which tests are supported by the test set General procedures that are required to setup the measurement Calibration procedures that must be performed periodically when testing mobile stations with the test set The scope of this guide does not cover the numerous features and capabilities of the test set. For details, refer to the E1968A On-line User s Guide which is available at: or User Documentation CD-ROM shipped with your application. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\muiguide_ch_intro.fm 6

7 Making 3GPP TS Tests 1 Making 3GPP TS Tests This chapter demonstrates the step-by-step procedures for making the tests specified in the 3GPP TS standard. To learn more about which tests are supported by the test set, see Test Adherence to Standards. Measuring the Bit Error Ratio Measuring GPRS/EGPRS Block Error Measuring 3GPP TS / Output RF Spectrum Measuring 3GPP TS Section 13.1 Phase and Frequency Error Measuring 3GPP TS Section 13.3 Power versus Time Measuring 3GPP TS GPRS Transmitter Output Power Measuring 3GPP TS EGPRS Transmitter Output Power Measuring 3GPP TS Section BFI (Lab Application only) Measuring 3GPP TS Section Modulation Accuracy Measuring 3GPP TS Section IFER (Lab Application only) S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\muiguide_ch_make_meas.fm 7

8 How do I make a GSM Bad Frame Indication (BFI) Measurement? How do I make a GSM Bad Frame Indication (BFI) Measurement? This section is only applicable to the lab applications and to GSM. This procedure assumes that the BCH parameter for Cell Band is set up correctly for your mobile station and that the appropriate RF IN/OUT Amplitude Offsets have been set to offset loss between the mobile station and the test set. Measuring 3GPP TS Section BFI 1. Press the CALL SETUP key. 2. Press BCH Parameters (F7). 3. Press Cell Power (F7) and set cell power to a value 20 db above the reference sensitivity level for the band in which you are testing. Reference sensitivity levels can be found in 3GPP TS section Press Return (F12). 5. Press TCH Parameters (F8). 6. Press Downlink Traffic Power (F7) and select Power Reduction Level One (PRL One). Enter 9 db. (Set the power reduction level to 9 db when performing 3GPP TS test The power used for downlink traffic channels will then be 11 db above the reference sensitivity level if the cell power is set 20 db above this level.) 7. Verify that the Power Reduction Level Used Burst is set to PRL One. 8. Press Traffic Channel (F9) and enter a value in the middle of the ARFCN range for the band in which you are testing. 9. Press MS TX Level (F10) and enter the value for maximum power for the band in which you are testing. 10.Press Channel Mode Setup (F11) and verify Channel Mode is set to FR Speech. 11.Connect the mobile station to the test set and turn in on. Allow it to camp to the test set s signal. 12.Establish a GSM phone call. NOTE You MUST establish the GSM phone call before the following configuration steps. The measurement does not work correctly if you configure speech type and the mobile loopback before a call is established. 13.Press the More softkey on the right side of the front panel display to access the TCH Parms (2 of 2) menu. 14.Press Speech (F10) and select SID. 15.Press Mobile Loopback (F9) and select Type A. 16.Press the Measurement Selection key. 17.Select GSM Bad Frame Indication. The measurement will start. 18.Press Bad Frame Ind Setup (F1). S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprsla_gen_op_overview_bfi.fm 8

9 How do I make a GSM Bad Frame Indication (BFI) Measurement? NOTE Notice that the default Samples to Test value is This is the number specified in 3GPP TS test for this test. This measurement can take over 45 minutes to complete this number of samples. 19.Select Speech Frame Delay and enter the appropriate value for your mobile station. If you are not sure what that value should be, try a value of Verify the measurement results meet the conformance requirements defined in 3GPP TS section Acceptable performance for the BFI test limit error rate is less than or equal to 0.041%. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprsla_gen_op_overview_bfi.fm 9

10 How Do I Make a GSM Frame Erasure Rate (FER) Measurement? How Do I Make a GSM Frame Erasure Rate (FER) Measurement? This section is only applicable to the lab applications and is not applicable to GPRS or EGPRS. This procedure assumes that the BCH parameter for Cell Band is set up correctly for your mobile station and that the appropriate RF IN/OUT Amplitude Offsets have been set to offset loss between the mobile station and the test set. 1. Press the CALL SETUP key. 2. Press TCH Parameters (F8). 3. Press Traffic Channel (F9) and enter a value on the low end of the ARFCN range for the band in which you are testing. 4. Press MS TX Level (F10) and enter the value for maximum power for the band in which you are testing. 5. Press Return (F12). 6. Connect the mobile station to the test set and turn in on. Allow it to camp to the test set s signal. 7. Establish a GSM phone call. 8. Press BCH Parameters (F7). 9. Press Cell Power (F7) and set cell power to the reference sensitivity level for the band in which you are testing. Reference sensitivity levels can be found in 3GPP TS section Press the Measurement Selection key. 11.Select GSM Frame Erasure Rate. The measurement will start. If the measurement is progressing, the count in the bottom left of the measurement s screen increments. 12.Press FER Setup (F1). NOTE Notice that the default Samples to Test value is either (for DCS and PCS) or 6696 (for all other bands). These are the numbers specified in 3GPP TS test for this test. This measurement can take over 30 minutes to complete this number of samples. 13.Modify the setup parameters as you see fit. 14.Verify the measurement results meet the conformance requirements specified in 3GPP section , table The minimum samples tested is and the Frame Erasure Rate depends on which cell band the mobile station is operating in. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprsla_gen_op_overview_ffer.fm 10

11 How Do I Make a GSM Frame Erasure Rate (FER) Measurement? A typical measurement report is shown above. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprsla_gen_op_overview_ffer.fm 11

12 How do I make Modulation Accuracy Measurements? How do I make Modulation Accuracy Measurements? This section is only applicable to EGPRS. Measuring 3GPP TS Section Modulation Accuracy The following topics are discussed in this section: A. Test Set Configuration on page 12 B. Start a Data Connection on page 13 C. Start the Measurement on page 13 D. Setup the Measurement on page 14 E. How to view IQ Imbalance Results on page 15 F. View the Modulation Accuracy Graphical Results on page 15 After obtaining the measurement results, verify that they meet the conformance requirements defined in 3GPP section A. Test Set Configuration Setup parameters for this measurement are assumed to be set to their default (Full preset) values unless otherwise stated. This procedure also assumes that the BCH parameter for band is set up correctly for your mobile station and that the appropriate RF IN/OUT Amplitude Offsets have been set to offset loss between the mobile station and the test set. 1. Press the CALL SETUP key. 2. Press Operating Mode (F1) and select Active Cell (EGPRS). 3. Press the Connection Type (F2) key, and select ETSI Type A. 4. Select PDTCH Parameters (F9) from the Call Parms menu. 5. Select Modulation Coding Scheme (F11) from the PDTCH Parms menu. The Modulation Coding Scheme popup menu appears. 6. Select Uplink Modulation Coding Scheme and select one of the following modulation coding schemes: MCS-5 (8PSK), MCS-6 (8PSK), MCS-7 (8PSK), MCS-8 (8PSK), or MCS-9 (8PSK). NOTE The Modulation Accuracy measurement is only useful for measuring 8PSK signals, therefore, it is necessary to select a modulation and coding scheme using 8PSK modulation for the measured signal. 7. Press the Close Menu (F6) key. 12 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprs_gen_op_overview_emac.fm

13 How do I make Modulation Accuracy Measurements? B. Start a Data Connection 1. Connect the mobile. 2. Turn the mobile on and wait for Attached in the Active Cell field. NOTE For mobiles that don t perform an EGPRS attach automatically, set the mobile to data mode. For example, your mobile station may have a connectivity setting for GPRS that allows you to specify whether you are always on-line or only use GPRS when it is needed. 3. Press the Start Data Connection (F3) key and watch for the Active Cell field changing to Transferring. C. Start the Measurement 1. Press the Measurement selection key. 2. Select the EGPRS Modulation Accuracy measurement. The measurement results for the default measurement setup are displayed. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprs_gen_op_overview_emac.fm 13

14 How do I make Modulation Accuracy Measurements? D. Setup the Measurement 1. Press the Modulation Accuracy Setup (F1) key. 2. You can set the measurement parameters as needed for your measurement, for example, statistical measurement results can be turned on by selecting the Multi-Measurement Count parameter and changing to the value to something greater than zero. For this example, enter Press the Close Menu (F6) key. The measurement results now include statistical results. 14 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprs_gen_op_overview_emac.fm

15 How do I make Modulation Accuracy Measurements? E. How to view IQ Imbalance Results 1. Press the Modulation Accuracy Setup (F1) key. 2. To view results for IQ Imbalance, select IQ Imbalance Calculate State and select On. 3. Press the Close Menu (F6) key. The measurement results now include IQ Imbalance results. F. View the Modulation Accuracy Graphical Results The procedures below all start from the Control menu. (This is the menu on the left in the previous figure.) General on page 16 View the EVM and Demodulated Symbols Graph on page 16 View the Magnitude and Phase Error Graphs on page 17 View the Sample EVM Histogram on page 18 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprs_gen_op_overview_emac.fm 15

16 How do I make Modulation Accuracy Measurements? General 1. Press the Change View (F2) key. 2. Press the EVM Demod Symbols (F2) key, Magnitude Error Phase Error (F3) key, or the Sample EVM Histogram (F5) key to display their respective measurement graphs. 3. Use the Return (F6) key to return to the Control menu. NOTE You can access the other graphs from any one graph s display by pressing Next Graph (F5) until the graph you want is displayed. View the EVM and Demodulated Symbols Graph 1. Press the Change View (F2) key. 2. Press the EVM Demod Symbols (F2) key to display the graphical EVM and Demod Symbols measurement results. You can change the EVM % per division by pressing Axis Control (F1) and then %/ div (F3)and entering the desired value. For the following example, 1.00 % was the value used. Press Return (F6) to return to Graph Control. You can also turn on markers to see the Demodulated symbols, EVM, Magnitude Error, and Phase error for individual symbols. Also, notice that the previous figure shows the demodulated symbols in octal. You can change the display to show the demodulated symbol values in binary by pressing the Demod Symbols (F4) key and selecting Binary. 3. Use the Return (F6) key to return to the Control menu. 16 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprs_gen_op_overview_emac.fm

17 How do I make Modulation Accuracy Measurements? View the Magnitude and Phase Error Graphs 1. Press the Change View (F2) key. 2. Press the Magnitude Error Phase Error (F3) key to display the graphical Magnitude and Phase Error measurement results. The graphs display error versus symbol position. You can alter the error axis of the magnitude error graph by pressing Axis Control (F1) and then %/div (F3) and entering the desired value. For the following example, 5.00 % was the value used. The phase error graph s error axis is altered by pressing deg/div (F4). Press Return (F6) to return to Graph Control. You can also turn on markers to see the Magnitude Error and Phase error for individual symbols. Also, notice that the previous figure shows the demodulated symbols in octal. You can change the display to show the demodulated symbol values in binary by pressing the Demod Symbols (F4) key and selecting Binary. 3. Use the Return (F6) key to return to the Control menu. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprs_gen_op_overview_emac.fm 17

18 How do I make Modulation Accuracy Measurements? View the Sample EVM Histogram 1. Press the Change View (F2) key. 2. Press the Sample EVM Histogram (F5) key to display the sample EVM histogram and the 95th Percentile EVM measurement results. You can also turn on markers to measure the probability for a particular range of EVM percentages. 3. Use the Return (F6) key to return to the Control menu. Changing the Sample EVM axis You can change the Maximum Sample EVM displayed on the graph to increase the resolution of the histogram. 1. Press Return (F6). 2. Press Return (F6) again. 3. Press Modulation Accuracy Setup (F1). 4. Select Histogram Maximum Sample EVM and select from the list. The proceeding figure used the 100% setting. The following figure uses the 10% setting. The vertical orange line is the 95th percentile EVM. The displayed as the limit of the x axis indicates that there were samples with an EVM that exceeded 10 and are not displayed on the graph. 18 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprs_gen_op_overview_emac.fm

19 How do I make Modulation Accuracy Measurements? 5. Press Change View (F2). 6. Press Sample EVM Histogram (F5). You can now use the markers. 7. Use the Return (F6) key to return to the Control menu. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\egprs_gen_op_overview_emac.fm 19

20 How to Make an AMR In-Band Frame Error Measurement How to Make an AMR In-Band Frame Error Measurement This section is only applicable to the lab applications. Measuring 3GPP TS Section IFER This procedure assumes that the BCH parameter for the Cell Band is set up correctly for your mobile station and the appropriate RF IN/OUT Amplitude Offsets have been set to offset loss between the mobile station and the test set. 1. Setup the General AMR Parameters. See General AMR Parameter Setup on page 60 for instructions on how to set these parameters through the front panel. 2. Select Originate Call (F3) to make a mobile terminated call or originate a call from the mobile station. 3. Press the Measurement Selection key. 4. Choose AMR In-Band Frame Error. The AMR IFER measurement starts automatically as soon as it is selected. NOTE There must be four codecs defined in the Active Codec Set (ACS) for the IFER measurement to initiate. 5. Select IFER Setup (F1) to set the measurement specific parameters. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gprsla_gen_op_overview_ifer.fm 20

21 How to Make an AMR In-Band Frame Error Measurement 6. Verify the measurement results meet the conformance requirements in 3GPP TS section , tables and , depending on which cell band your mobile station is operating in. The minimum number of samples for any cell band is , however the test limit error rate is defined separately according to the cell band. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gprsla_gen_op_overview_ifer.fm 21

22 How Do I Make a Bit Error Measurement? How Do I Make a Bit Error Measurement? Bit Error Ratio is defined in 3GPP TS version 5.9, section Measuring the Bit Error Ratio This procedure assumes that the BCH parameter for Cell Band is set up correctly for your mobile station and that the appropriate RF IN/OUT Amplitude Offsets have been set to offset loss between the mobile station and the test set. NOTE To make bit error measurements your mobile must be fitted with a Test SIM card and have ETSI Type B connection capability. 1. Press the CALL SETUP key. 2. Press the More key (bottom right) to obtain the Call Parms (3 of 3) screen. 3. Press the Multislot Config (F7) key and select 1 down, 1 up. 4. Press the Data Conn Type (F4) key and select ETSI Type B. 5. Connect the mobile. 6. Turn the mobile on and wait for Attached in the Active Cell: field. NOTE For mobiles that don t perform GPRS attach automatically, set the mobile to data mode. 7. Press the Start Data Connection (F3) key and watch for the Active Cell field changing to Transferring. 8. Press the Measurement selection key. 9. Select the Bit Error measurement. 10.Press the Bit Error Setup (F1) key. 11.Set the measurement parameters as needed for your measurement situation, including: Measurement Timeout = 13.0 s S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_ber.fm 22

23 How Do I Make a Bit Error Measurement? Observe how reducing the cell power affects the bit error ratio. A typical bit error ratio measurement result is shown above. To see the effect of cell power on the bit error ratio, press the Cell Power (F7) key on the Call Parms (1 of 3) screen and slowly reduce the power while observing the Bit Error display. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_ber.fm 23

24 How Do I Make a Block Error Measurement? How Do I Make a Block Error Measurement? The Block Error (BLER) measurement which the test set provides is based on GPRS receiver tests defined in 3GPP , section (GPRS) and section (EGPRS). Measuring GPRS/EGPRS Block Error NOTE Block error (BLER) measurements cannot be run concurrently with bit error (BER) measurements. Starting a BLER measurement while a BER measurement is currently running, closes the BER measurement. 1. Press the CALL SETUP key. 2. Press the More key (bottom right) to obtain the Call Parms (3 of 3) screen. 3. Connect the mobile. 4. Turn the mobile on and wait for Attached in the Active Cell field. NOTE For mobiles that don t perform GPRS attach automatically, set the mobile to data mode. 5. Press the Start Data Connection (F3) key and watch for the Active Cell field changing to Transferring. 6. Press the Measurement selection key. 7. Select the GPRS Block Error measurement. 8. Press the Block Error Setup (F1) key. 9. Set the measurement parameters as needed for your measurement situation, including: Measurement Timeout = 13.0 s Number of blocks to test = If you are testing the a GPRS mobile station, verify the BLER measurement result for the PDTCH/MCS1 to 4 does not exceed 10% at input levels according to the tables in 3GPP TS version 5.9, section If you are testing an EGPRS mobile station, verify the BLER measurement result for the PDTCH/MCS5 to 9 does not exceed 10% or 30% depending on coding schemes at input levels according to the tables in 3GPP TS version 5.9, section S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_bler.fm 24

25 How Do I Make a Block Error Measurement? Observe how reducing the cell power affects the block error ratio. Observe how reducing the cell power affects the block error ratio. A typical block error measurement result is shown above. To see the effect of cell power on the block error, press the Cell Power (F7) key on the Call Parms (1 of 3) screen and slowly reduce the power while observing the Block Error Ratio display. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_bler.fm 25

26 How Do I Make an Output RF Spectrum Measurement? How Do I Make an Output RF Spectrum Measurement? Measuring 3GPP TS / Output RF Spectrum This procedure assumes that the BCH parameter for Cell Band is set up correctly for your mobile station and that the appropriate RF IN/OUT Amplitude Offsets have been set to offset loss between the mobile station and the test set. 1. Connect the mobile. 2. Turn the mobile on and wait for Attached in the Active Cell field. Note: For mobiles that don t perform a GPRS attach automatically, set the mobile to data mode. 3. Press the Start Data Connection (F3) key and watch for the Active Cell field changing to Transferring. 4. Press the Measurement selection key. 5. Select the Output RF Spectrum measurement. 6. Press the ORFS Setup (F1) key. 7. Press the Measurement Setup (F1) key. 8. Set the measurement parameters as needed for your measurement, including: Measurement Timeout = 20 s. 9. Press the Modulation Frequencies (F2) key and set up your required offset frequencies for ORFS due to modulation. 10.Press the Close Menu (F6) key. 11.Press the Switching Frequencies (F3) key and set up your required offset frequencies for ORFS due to switching. 12.Press the Close Menu (F6) key. 13.Press the Return (F6) key. 14.Press the Change View (F2) key. 15.Press the Modulation Numeric (F1) key. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_orfs.fm 26

27 How Do I Make an Output RF Spectrum Measurement? The figure above displays the ORFS measurement results. Note that the results are in db relative to the 30 khz BW Power shown on the screen. 16.Press the Switching Numeric (F2) key to display the measurement results for ORFS due to switching. A typical measurement results screen for ORFS due to switching is shown above. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_orfs.fm 27

28 How Do I Make an Output RF Spectrum Measurement? 17.Press the Graph (F3) key then the Modulation (F1) key to access the ORFS due to modulation bar graph. Center frequency Frequency offsets A typical ORFS due to modulation graph is shown above. On the display, the bar representing each offset is shown in yellow and the center frequency is indicated by a white vertical line. There are two limit lines displayed; the absolute limit line is green and the relative limit line is blue. The pass/fail result is relevant to the displayed measurement. 18.Press the Switching (F2) key to access the ORFS due to switching bar graph. Marker signal level and offset frequency Marker indicato A typical ORFS due to switching graph is shown above. On the display, the bar representing each offset is shown in blue and the center frequency is indicated by a white vertical line. In this case, the marker is turned on and positioned at the 600 khz offset. The signal level and frequency of the offset where the marker is positioned, are shown at the top of the display above the graph. The marker can be turned on by pressing the Graph Control (F5) key then the Marker Position (F2) key. Set the required marker position using the knob or the numeric entry keys. In addition, the axis values can be changed by pressing the Axis Control (F1) key. This allows you to zoom in or out to look at particular sections of the graph in more detail. 19.Press the Modulation and Switching (F3) key to access a screen displaying both graphs, as shown in the example below. 28 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_orfs.fm

29 How Do I Make an Output RF Spectrum Measurement? Note that each of the graphs have their own graph controls on F4 and F5. Any failing results are displayed in red. If you require details on how to navigate through the Output RF Spectrum graph menus, see Output RF Spectrum Graph Menus on page To set your own limits for each offset use the Measurement Setup menu and set Limit Source to Manual. You can then use Modulation Limits (F4) and Switching Limits (F5) to set your required limits for each offset. 21. Verify the results from the test set meet the conformance requirements detailed in 3GPP TS (Version 5.9) section for GPRS mobile stations and for EGPRS mobile stations. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_orfs.fm 29

30 How Do I Make an Output RF Spectrum Measurement? Output RF Spectrum Graph Menus * * May show 2 Graph Control keys 30 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_orfs.fm

31 How Do I Make a Phase and Frequency Error Measurement? How Do I Make a Phase and Frequency Error Measurement? Measuring 3GPP TS Section 13.1 Phase and Frequency Error This procedure assumes that the BCH parameter for Cell Band is set up correctly for your mobile station and that the appropriate RF IN/OUT Amplitude Offsets have been set to offset loss between the mobile station and the test set. 1. Connect the mobile. 2. Turn the mobile on and wait for Attached in the Active Cell field located in the bottom center of the screen. Note: For mobiles that don t perform a GPRS attach automatically, set the mobile to data mode. 3. Press the Start Data Connection (F3) key and watch for the Active Cell field changing to Transferring. 4. Press the Measurement selection key. 5. Select the Phase & Frequency Error measurement. 6. Press the Phase & Freq. Setup (F1) key. 7. Set the measurement parameters as needed for your measurement situation, including: Measurement Timeout = 10 s 8. Verify that the RMS phase error is not greater than 5 degrees, and the peak phase error is not greater than 20 degrees. Also verify that the mobile station s carrier frequency is accurate to within 0.1 ppm. PCS was the Cell Band used while capturing the results below. For the PCS band the Frequency error should not exceed +/ Hz. A typical phase and frequency error measurement result is shown above. 9. Press the Change View (F2) key. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_pfer.fm 31

32 How Do I Make a Phase and Frequency Error Measurement? 10.Press the Graph (F2) key to access the peak phase error graph. A typical peak phase error graph is shown above. The marker can be turned on by pressing the Graph Control (F5) key then the Marker Position (F2) key. Set the required marker position using the knob or the numeric entry keys. In addition, the axis values can be changed by pressing the Axis Control (F1) key. This allows you to zoom in or out to look at particular sections of the graph in more detail. Marker indicator Marker phase error and bit position A typical peak phase error graph is shown above. This graph is zoomed in to show bits ranging from to at a 1.0 degrees per division setting. The Y-axis reference point is changed to 5.0 degrees. In this case, the marker is turned on and positioned at bit 104. The phase error at the marker and its bit position are shown at the top of the display above the graph. If you require details on how to navigate through the phase and frequency error graph menus, see Phase and Frequency Error Graph Menus on page S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_pfer.fm

33 How Do I Make a Phase and Frequency Error Measurement? Phase and Frequency Error Graph Menus S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_pfer.fm 33

34 How Do I Make a Power Versus Time Measurement? How Do I Make a Power Versus Time Measurement? The pass/fail result the test set returns indicates whether the entire burst fell within power and timing ranges determined by a point-by-point comparison of the power versus time measurement mask defined in 3GPP TS Annex B for either GMSK or EPSK bursts. Measuring 3GPP TS Section 13.3 Power versus Time This procedure assumes that the BCH parameter for Cell Band is set up correctly for your mobile station and that the appropriate RF IN/OUT Amplitude Offsets have been set to offset loss between the mobile station and the test set. NOTE This measurement procedure assumes that your mobile supports two adjacent uplink timeslots. 1. Press the CALL SETUP key. 2. Press the More key (bottom right) to obtain the Call Parms (3 of 3) screen. 3. Press the Multislot Config (F7) key and select 2 down, 2 up. 4. Connect the mobile. 5. Turn the mobile on and wait for Attached in the Active Cell field. Note: For mobiles that don t perform a GPRS attach automatically, set the mobile to data mode. 6. Press the Start Data Connection (F3) key and watch for the Active Cell field changing to Transferring. 7. Press the Measurement selection key. 8. Select the Power vs Time measurement. 9. Press the Power vs Time Setup (F1)key. 10.Press the Measurement Setup (F1)key. 11.Set the measurement parameters as needed for your measurement situation, including: Measurement Timeout = 10 s 12.Press the Burst1 Meas Offsets (F2) key and set up your required time offset values for burst 1. NOTE For statistical analysis the test set allows you to set up to 12 time markers. These markers do not define the mask but allow you to obtain measurement results from specified points on the mask. If you want to define your own custom mask, you can do this using the Custom Mask Setup parameters within the Power vs Time Setup menu. 13.Press the Burst2 Meas Offsets (F3) key and set up your required time offset values for burst 2. NOTE Offsets are referenced to bit zero in a normal burst. To obtain results from measurement points before bit 0, enter negative offset values. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_pvt.fm 34

35 How Do I Make a Power Versus Time Measurement? 14.Press the Close Menu (F6) key. A typical summary results screen is shown above. 15.Press the Return (F6) key. 16.Press the Change View (F2) key. 17.Press the Burst 1 numeric Results (F2) key to view the offset measurement results for burst 1. A typical numeric measurement results screen for offsets is shown above. 18.Press the Burst 2 numeric Results (F3) key to view the offset measurement results for burst 2. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_pvt.fm 35

36 How Do I Make a Power Versus Time Measurement? 19.Press the Graph (F4) key to access the full graph view of the two adjacent uplink bursts. The structure of the Power versus Time graph menus are slightly different depending on the number of uplink bursts in the multislot configuration. If you require details on how to navigate through the Power versus Time graph menus, see either: Power versus Time Graph Menus (one uplink burst) on page 38, or Power versus Time Graph Menus (two uplink bursts) on page 39. Pass/Fail indicators for each section of the uplink bursts Overall Pass/Fail indicator A typical full graph view of two adjacent uplink bursts is shown above. Two types of pass/fail results are provided: An overall measurement pass/fail indicator is positioned in the bottom left corner of the display: The text Pass is shown in a green-colored font if the measurement has passed the entire mask. The text Fail is shown in a red-colored font if the measurement has failed any part of the mask. Individual pass/fail indicators are provided for each section of the mask. On the display, text labels corresponding to the following sections change color to indicate a pass or fail (green indicates a pass; red indicates a fail): Rise section of burst 1 Active (useful) section of Burst 1 36 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_pvt.fm

37 How Do I Make a Power Versus Time Measurement? Guard period between burst 1 and 2 (Note: this indicator is only available if you are measuring two uplinks) Active (useful) portion of Burst 2 (Note: this is only available if you are measuring two uplinks) Fall section NOTE When the Multi-Measurement Count parameter is set to a number greater than 1, it is possible for some, or all of the individual pass/fail indicators to show a pass while the overall pass/fail indicator shows a fail. This is because the individual pass/fail indicators relate to the last of the multi-measurements made, whereas the overall mask pass/fail indicator is an accumulative result from all the multi-measurements made. You can zoom in to individual sections of the graph by pressing the Guard Period (F2), Burst 1 Views (F3), or Burst 2 Views (F4) keys. In addition, you can control a marker or change axis values by pressing the Graph Control (F5) key. Marker signal level and position along the x-axis Marker indicator A typical graph view of the falling edge of burst 2 is shown above. You can access this view by pressing the Burst 2 Views (F4) key then the Falling Edge (F3) key. In this case, the marker is turned on and positioned on the falling edge. The marker can be turned on by pressing the Graph Control (F5) key then the Marker Position (F2) key. Set the required marker position using the knob or the numeric entry keys. The signal level at the marker and its position along the x-axis are shown at the top of the display above the graph. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_pvt.fm 37

38 How Do I Make a Power Versus Time Measurement? Power versus Time Graph Menus (one uplink burst) 38 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_pvt.fm

39 Power versus Time Graph Menus (two uplink bursts) How Do I Make a Power Versus Time Measurement? S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_pvt.fm 39

40 How Do I Make a Transmit Power Measurement? How Do I Make a Transmit Power Measurement? This section contains the measurement procedures for: Measuring 3GPP TS GPRS Transmitter Output Power Measuring 3GPP TS EGPRS Transmitter Output Power Measuring 3GPP TS GPRS Transmitter Output Power This procedure assumes that the BCH parameter for Cell Band is set up correctly for your mobile station and that the appropriate RF IN/OUT Amplitude Offsets have been set to offset loss between the mobile station and the test set. 1. Connect the mobile. 2. Turn the mobile on and wait for Attached in the Active Cell field. Note: For mobiles that don t perform a GPRS attach automatically, set the mobile to data mode. 3. Press the Start Data Connection (F3) key and watch for the Active Cell field changing to Transferring. 4. Press the Measurement selection key. 5. Select the GSM/GPRS Transmit Power measurement. 6. Press the GSM/GPRS Transmit Power Setup (F1) key. 7. Set the measurement parameters as needed for your measurement situation, including: Measurement Timeout = 5.0 s 8. Verify the transmit power measurement (with averaging turned on) conforms to ETSI GSM (Ver 8), section 4. Verify also that it conforms with the test requirements of 3GPP (formerly ETSI GSM 11.10) section A typical measurement result is shown above. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_txp.fm 40

41 How Do I Make a Transmit Power Measurement? Measuring 3GPP TS EGPRS Transmitter Output Power This procedure assumes that the BCH parameter for Cell Band is set up correctly for your mobile station and that the appropriate RF IN/OUT Amplitude Offsets have been set to offset loss between the mobile station and the test set. 1. Connect the mobile. 2. Turn the mobile on and wait for Attached in the Active Cell field. Note: For mobiles that don t perform a GPRS attach automatically, set the mobile to data mode. 3. Press the Start Data Connection (F3) key and watch for the Active Cell field changing to Transferring. 4. Press the Measurement selection key. 5. If the test set is in an EGPRS operating mode: Select the EGPRS Transmit Power measurement. 6. Press the EGPRS Transmit Power Setup (F1) key. 7. Set the measurement parameters as needed for your measurement situation, including: Measurement Timeout = 5.0 s 8. Verify the EGPRS 8PSK Estimated Carrier Power measurement meets the accuracy requirements for an estimation technique of long term average power as defined in 3GPP , annex 5. A typical measurement result is shown above. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\gen_op_overview_meas_txp.fm 41

42 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\muiguide_ch_appendix.fm 42

43 Appendix 2 Appendix This Appendix includes some general setup procedures that are required to perform the tests and other helpful information. The contents are: Test Adherence to Standards on page 44 How Do I Set Up a Call? on page 49 Setting Up the Call Parameters on page 49 Establishing a Mobile Terminated Call on page 50 Establishing a Mobile Originated Call on page 50 How Do I Make Measurements on a Mobile? on page 51 How Do I Change Call Parameters? on page 53 How Do I Change Cell Parameters? on page 54 How Do I End a Call? on page 59 How to use the Adaptive Multi-Rate (AMR) Features on page 60 How Do I Use the Spectrum Monitor? on page 65 Calibrating the Test Set on page 70 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\muiguide_ch_appendix.fm 43

44 Test Adherence to Standards Test Adherence to Standards The 8960 Series 10 is compliant with 3GPP (formerly ETSI GSM 11.10). Frequency Error and Phase Error Standards Reference: 3GPP (formerly ETSI GSM 11.10) sections 13.1 and The method of test implemented by the test set s Phase and Frequency Error measurement conforms to the measurement method defined in 3GPP , section For GPRS mobiles which support a single uplink timeslot or two adjacent uplink timeslots, the Phase and Frequency Error measurement conforms to 3GPP , section For EGPRS mobiles which support a single uplink timeslot or two adjacent uplink timeslots, the Phase and Frequency Error measurement conforms to 3GPP , section Transmitter Output Power and Burst Timing Error Standards Reference: 3GPP (formerly ETSI GSM 11.10) sections 13.3, , and To make a transmitter output power measurement that conforms to 3GPP standards, perform a Power versus Time measurement. An ETSI compliant, transmitter output power (TXPower) result is available as a result of this measurement. Pass/fail checking of the Power versus Time mask is also available by using the Power versus Time measurement. The Burst Timing Error result is available for GSM, GPRS and EGPRS on the Call Setup screen and by sending a query to the CALL subsystem. For GPRS mobiles which support a single uplink timeslot or two adjacent uplink timeslots, the transmitter output power result conforms to 3GPP , section When measuring two adjacent uplinks, each of these can have different power levels. For EGPRS mobiles which support a single uplink timeslot or two adjacent uplink timeslots, the 8PSK burst power measurement (with averaging turned on) conforms to 3GPP , section The 8PSK Estimated Carrier Power measurement meets the accuracy requirements for an estimation technique of long term average power as defined in 3GPP , annex 5. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\meas_adherence_desc.fm 44

45 Test Adherence to Standards Making a faster transmitter output power measurement for GMSK modulated signals An alternative method for testing the transmitter output power is using the GSM/GPRS TX Power measurement in the test set. The GSM/GPRS TX Power measurement implemented in the test set varies from the ETSI recommended method for measuring carrier power in terms of synchronization. This measurement synchronizes using RF amplitude synchronization instead of midamble synchronization. This was intentionally done to speed up the measurement, as this is one of the most common measurements performed in manufacturing. This alternative measurement technique is approximately four times faster than the synchronized method with the same accuracy. If the input signal meets the GSM Power versus Time characteristics, the TX Power measurement provides the same results as the Power versus Time - TX Power result (which is midamble synchronized and ETSI compliant). Note that the output RF spectrum measurement makes the TX Power measurement as part of its measurement process. NOTE The serving cell must be either GSM or GPRS for the GSM/GPRS TX Power measurement to be used. When the serving cell is EGPRS, this measurement is not available. S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\meas_adherence_desc.fm 45

46 Test Adherence to Standards Output RF Spectrum Standards Reference: 3GPP (formerly ETSI GSM 11.10) sections 13.4 and The Output RF Spectrum due to Switching method of test conforms to ETSI GSM 11.10, section 13.4 at offsets < 1800 khz. For GPRS mobiles which support a single uplink timeslot or two adjacent uplink timeslots, the measurement conforms to ETSI GSM 11.10, section at offsets < 1800 khz. The Output RF Spectrum due to Modulation method of test conforms to 3GPP , section 13.4 at offsets < 1800 khz. For GPRS or EGPRS mobiles which support a single uplink timeslot or two adjacent uplink timeslots, the measurement conforms to 3GPP , section at offsets < 1800 khz (when the Multi-Measurement Count - Modulation parameter is set to Off using SETup:ORFSpectrum:COUNt:STATe). Making a faster ORFS measurement When Multi-Measurement Count (Modulation) is greater than 1, the measurement is performed over 40 or more bits in each of the regions from bit 15 to 60 and bit 87 to 132 of the burst. In 3GPP , the measurement is only specified on the latter section of the burst. Measuring on both the front and back of the burst has two advantages. First, this method provides two modulation measurements per burst, effectively doubling measurement speed. Secondly, it provides additional information regarding the spurious performance of the mobile. The method of test in 3GPP is based upon time-gated spectrum analysis; this technique only allows one measurement per burst. Modern DSP techniques employed in the test set makes it possible to measure more of the burst while still excluding the unwanted effects of the midamble and switching transients generated by burst modulation. Measuring ORFS on GPRS and EGPRS mobiles using the BLER data connection type The result of the Output RF Spectrum measurement relies on pseudo random data being present in the data field of the RF burst. When using the BLER data connection type, these data fields do not contain pseudo random data, therefore the results may not be representative. 46 S:\content repository\(01) E5515\E1968A, E6701C, E6704A GSM GPRS EGPRS\release archive\4.8\mui\chapters\meas_adherence_desc.fm