QAM Measurement | Anritsu Series MS278XB instruction

Modulation Measurements

Measurements

QAM Measurement

The following modulation measurements use a 2 GHz, 64QAM modulated test signal at 5 dBm with the analyzer set up as follows:

•Modulation Format: 64 QAM

•Roll-off Factor (a): 0.22

•Symbol Rate: 5 MHz

Constellation Graph of 64 QAM Modulated Test Signal

Figure 5-18.Constellation Graph of 64 QAM Modulated Test Signal

5-40	MS278XB OM

Image 196

Anritsu Series MS278XB operation manual QAM Measurement, Constellation Graph of 64 QAM Modulated Test Signal

Contents

MS278XB Page Updates END-USER License Agreement for Anritsu Software Page Page Safety Symbols Safety-1 For Safety Safety-2 Table of Contents Table of Contents Front Panel Menus Table of Contents Measurements Table of Contents Software Peripherals Appendix A-Specifications Subject IndexRemote Operation Page About this Manual IntroductionAssociated Documentation Conventions Product Description Product Description Digital Architecture RF/Analog ArchitectureGeneral Information Product Description Software Architecture Options and Accessories Part Number Optional Accessory DescriptionExternal Interfaces Identification Number Cleaning the Touch Screen Preventive MaintenanceOperating System Integrity Operating System Backup and Recovery General Information Internal Battery Replacing the Line Fuses Introduction Power RequirementsOperating Environment Unpacking the Product Package ContentsInitial Inspection Rack Mount Installation Assembly optionalPreparation for Use Assembly optional Assembly optional Preparation for Use Rack Mount Slide Assembly Diagram Instrument Startup Power On ProcedureWarm-up Time Configuration Bios ConfigurationConfiguration Preparation for Use Instrument Shutdown Windows XP Configuration Configuration Preparation for Use Security Settings Remote AccessHard Disk Configuration Computer Name Analyzer Configuration Tools Drop-down Menu Configuration Preparation for Use Installing Options OptionsWiz Dialog Customizing the Tool Bar 10.Customize Toolbar Dialog Remote Interface Setup Gpib SetupRemote Interface Setup Preparation for Use Gpib Interface Connection Gpib Configuration 12.MS278XB Configuration Sub-menu 13.National Instruments Measurement and Automation Explorer 14.National Instruments Gpib Configuration Dialog Network Interface Setup LAN SetupNetwork Connections 17. Control Panel 18.Network Connections Select Connect to the network at my workplace and press Next Enter the name of your new connection and press Next 24.New Connection Wizard 26.Local Area Connection Properties 28.Alternate Internet Protocol TCP/IP Properties Connecting External Devices Connecting an External Keyboard or MouseConnecting an External Monitor Connecting an External Printer Preparation for Use Connecting External Devices 30.Add Printer Wizard Select the network radio button and press Next Connecting an External USB Device 34.Add Printer Wizard Preparation for Storage Preparation for Storage/ShipmentPreparation for Shipment Instrument Overview Front Panel Overview Front Panel Overview Instrument Overview MS278XB Front Panel Drawing Instrument Overview Front Panel Overview Image Description Index Image Description Display measurement data and interactive finger-touch menus Front Panel Keys Data DisplayMajor Function Keys Minor Function Keys Numeric Keys Connectors Pin Description DVD-ROM/CD-RW Drive Function SpecificationManually Ejecting the DVD-ROM/CD-RW Drive Tray 15 mm Mm Diameter Graphical User Interface Overview Graphical User Interface Overview Instrument Overview File Drop-down Menu BarView 10.Front Panel Drop-down Menus Matlab About Anritsu Signature Main Menu Bar Icon Description MS278XB OM Sub-menu Trees Frequency Menu Amplitude Menu Bandwidth Menu Display MenuSystem Menu Entering Data and Fly-out Menus 15.Terminator Fly-out Menus RF Measurements Active Traces Active Markers Sweep Modes Modulation Types Configuration Span Presets Standards 16.Selection Fly-out Menus RACH/TCP Toggle Buttons 17.Toggle Buttons Parameter Entry and Measurement Setup Dialogs 18.Drop-down Selection Menu Alpha-Numeric Entry 20.MS278XB On-Screen Keyboard Graticule Spectral Analysis Graticule Displays Index Description 22.Marker Table with Delta and Noise Marker 26.Adjacent Channel Power Measurement Table 28.Vector Signal Analysis Graticule 29.QPSK Summary Display 30.Single Code Summary Table 31.Composite Constellation with Summary Table of Test Model MS278XB OM General Status Messages Instrument Messages and Status BarCalibration Messages External Keyboard Hot-key Functions Key Reference Signature Usage AT-101 Usage Changing Setups Instrument PresetInstrument Operation Calibration State Rear Panel and Connector Diagrams Rear Panel and Connector Diagrams Instrument Overview Instrument Overview Rear Panel and Connector Diagrams Index Name/Image Description Connector Air Exhaust GrillAC Power Input Fuse Block Description Connector Gpib Interface Monitor InterfacePS/2 Mouse Interface Description Connector PS/2 Keyboard IndexReference Output Reference Input Description Connector Input Noise Source PowerEthernet Sweep Output Pin Name Description EOI 11. Index 7 25-pin Parallel Printer Connector Pinout Diagram ID2 RX+ Name Description Quick Reference Main Menu Submenu Bandwidth Menu Display Menu Quick Reference Front Panel Menus Frequency MenuMarker Menu Front Panel Menus Quick Reference Dialog Frequency Main Menu Menu ArchiveMenu Archive Front Panel Menus Front Panel Menus Menu Archive Frequencies Menu Menu Archive Front Panel Menus Step Size and Offset Menu Amplitude Main Menu Front Panel Menus Menu Archive Menu Archive Front Panel Menus Amplitude Menu Front Panel Menus Menu Archive Axis Options Menu Y-Axis Options menu lets you set the following parameters Bandwidth Main Menu Front Panel Menus Menu Archive Bandwidth Menu Menu Archive Front Panel Menus Auto Coupling Menu Marker Main Menu Modulation Menu Archive Front Panel Menus Marker Select MenuMeasurements Marker value Be used to increment the marker value Modulation Measurements Marker to Menu Menu Archive Front Panel Menus Marker Config Menu Display Lines Menu Measurement Main Menu Spectrum Menu Archive Front Panel Menus Measurement MenuRF Measurement Types QAM/PSK Graph Types Phase Noise Trace Main Menu Menu Archive Front Panel Menus Trace Config Menu Display Main Menu Menu Archive Front Panel Menus Display Options Menu Touch Screen Menu Sweep Main Menu Menu Archive Front Panel Menus Sweep Menu 17. Sweep Menu Trigger Main Menu 10.Trigger Main Menu If Power Wide BW SPA ModeVSA Mode Menu Archive Front Panel Menus Trigger Menu System Main Menu 11.System Main Menu Calibration Menu Menu Archive Front Panel Menus Rear Panel Control MenuSystem Information Menu Front Panel Menus Menu Archive Configuration Menu Remote Control Menu Menu Archive Front Panel Menus Service Menu File Menu File Main Menu25. File Menu Occupied Bandwidth Setup Dialog Parameter Entry and Measurement Setup Dialog ArchiveOBW Tab Channel Power Setup Dialog 14.Channel Power Setup Dialog Adjacent Channel Power ACP Setup Dialog ACP Tab 1 ACP Tab 2 Multicarrier Channel Power Setup Dialog 16.Multicarrier Channel Power Setup Dialog Adj/Alt Channels Tab Advanced Tab Ccdf Setup Dialog 17.CCDF Setup Dialog Apply Mask Tab Spectrum Mask Setup DialogAdd\Edit\Delete Mask Tab Define Spectrum Mask Dialog VSA Modulation Parameters Setup Dialog Modulation SettingsFormat Modulation Tab Advanced Tab Qpsk Tab Wcdma Graph Type DialogBase Station/User Equipment Uplink or Downlink Code Domain Power Tab Code Domain Single Channel Tab MS278XB OM Acquisition Config Tab Wcdma Setup DialogBase Station/User Equipment Uplink or MS278XB OM Modulation Analysis Config Tab Constellation Rotation Select 0 degrees TPC Limit Edge Definition Dialog 22.TPC Limit Edge Definition Dialog Channel Table Editor Channel Table Editor DialogChannel Table Test Models Customize Tool Bar Dialog Options Dialog Matlab Setup Dialog Basic Tab Without Option Basic Measurement Setups Measurements Setting the Center Frequency Basic Measurement Setups Measurements Setting the Frequency Span Measurements Basic Measurement Setups Setting the Start and Stop Frequencies Setting the Reference Level Setting the Input Attenuation Setting the Scale/Div Setting the Resolution Bandwidth Setting the Video Bandwidth Setting the Sweep Time Setting the Bandwidth Coupling Modes Setting Markers MS278XB OM Setting Trace Modes MS278XB OM MS278XB OM Configuring the Triggering MS278XB OM Measurement Examples Measuring a CW Carrier Measurement Examples Measurements Measuring Harmonics Displaying Wide Band FFT Mode Displaying Narrow Band FFT Mode Measuring a Pulse in the Time Domain Displaying Detectors Displaying Detector Modes Displaying Trace Modes Measuring Phase Noise RF Measurements RF Measurements Third Order Intercept Measurement Measurements RF Measurements Occupied Bandwidth Measurement 10.Occupied Bandwidth Measurement Channel Power Measurement 11.Channel Power Measurement Adjacent Channel Power Measurement 12.Adjacent Channel Power Measurement Multicarrier Channel Power Measurement 13.Multi-Carrier Channel Power with Acpr Measurement Modulation Measurements Measurements Modulation Measurements 14.Vector Graph of Qpsk Modulated Test Signal Qpsk Measurement 15.EVM/Time Graph of Qpsk Modulated Test Signal Summary Table of Qpsk Modulated Test Signal 17.Eye Graph of Qpsk Modulated Test Signal 18.Constellation Graph of 64 QAM Modulated Test Signal QAM Measurement 19.Power/Time Graph of 64 QAM Modulated Test Signal Wcdma Measurements Code Domain Power Measurement 20.Code Domain Power Graph Selection Dialog 21.Code Domain Power for Test Model 22.Code Domain Power for Test Model 5 with Summary Table 23.Code Domain Power for a Test Model with Zoom MS278XB OM Modulation Measurements Code Domain Error Measurement 25.Code Domain Power Graph Selection Dialog 26.Code Domain Error of Test Model 27.QPSK Graph Type Setup Dialog Modulation Measurements Qpsk Measurement 28.QPSK Constellation with Summary Table 29.All Errors Vs. Time Display 30.QPSK Eye-I and Eye-Q Diagram Modulation Measurements Composite Measurement 31.Composite Graph Type Selection Dialog MS278XB OM Modulation Measurements Single Code Measurement 33.Code Domain Single Channel Graph Type Selection Dialog MS278XB OM MS278XB OM 36.Single-Code Summary Table with Bit Stream Display 37.Single-Code Summary Table of Hsdpa Bit Stream in Binary 38.Single Channel Code Power vs. Slot MS278XB OM 40.Code Domain Power Setup Screen 41.Code Domain Power Channel Uplink Channel Type Color 42.Code Domain Power with Zoom 43.Code Domain Error 44.Code Domain Error with Zoom 45.Code Domain Single Channel Setup Screen 46.Code Domain Single Channel with Summary 47.Code Domain Single Channel-Code Power vs. Slot Overview Operation Verification Required Equipment Operation Verification Measurements Test Setup Reference Oscillator Aging Rate Optional Operation Verification Measurements Test Procedure 49.Equipment Setup for Frequency Readout Accuracy Test Frequency Readout Accuracy Span Specification Marker Readout MHz Frequency 50.Equipment Setup for Frequency Span Accuracy Test Frequency Span Accuracy Specification Span Error MHz F1’ F2’ F2’ F1’/0.8 Span Swept Resolution Bandwidth 51.Equipment Setup for Swept Resolution Bandwidth Test Swept Resolution Bandwidth Test Single Sideband Phase Noise 52.Equipment Setup for Single Sideband Phase Noise Test To Noise Ratio Calculated Phase Noise Specification Offset DBc DBc/Hz Compute the Calculated Phase Noise for each value in Table 53.Equipment Setup for Average Noise Level Test Average Noise Level 54.Displaying the Average Noise Level Center Frequency Measured Result Specifications 55.Equipment Setup for Frequency Response Test Frequency Response 10.Frequency Response Test Reference Level Switching Uncertainty Deviation from MS2781B DBm Reference Level Resolution Bandwidth RBW Switching Uncertainty From 30 kHz RBW dB Specifications MS2781B Marker Amplitude Deviation 58.Equipment Setup for Residual Spurious Responses Test Residual Spurious Response Center Frequency Measured Residual Specifications MHz DBm 59.Equipment Setup for Input-related Spurious Response Test Input-related Spurious Response 14.Input-related Spurious Responses Test Signature MathWorks Connectivity Description Signature-MathWorks Connectivity Option 40 onlyIntegrated MathWorks Computational Components Signature-MathWorks Connectivity Option 40 only Connecting to MatlabPreConditions Matlab Setup Dialog Matlab Control Matlab Main Interface Signature Measurement Trace vs. Matlab Timerplot Advanced Matlab Functions Microsoft Applications Copying Graphical Screen ImagesMicrosoft Applications Copying Screen Shots to Image Editors Software Peripherals Microsoft Applications Exporting Trace DataImporting the Trace Data to Excel Importing the Trace Data to Access Signature Data Imported Into Excel Selecting the File Type in Access Page Remote Desktop Setting Up Your AnalyzerEnabling the Analyzer as the Host Installing the Client Software Remote Desktop Remote Operation This opens the Remote Desktop Connection dialog shown below Advanced Connection Options Logging Off and Ending a Remote Desktop Session Safety Environmental SpecificationsEMI Compatibility Page Symbols SymbolsNumerics USB Index-2 Input Wcdma Index-4 Input -41,3-42 QAM Measurement Type Safety Symbols Index-6 Index-7 Anritsu Customer Service Centers United States France Japan