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Series MS278XB High Performance Signal Analyzer Operation Manual Software Version 4.xx Anritsu Comp any 490 Jarvis Drive Morgan Hill, CA 95037-2809 USA P/N: 10410-00273 Revisi on: D Printed: July 20 0.
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W ARRANTY The Anritsu product(s) listed on the title page is (are) warran ted against defects in materia ls and workma nship for three years from the date of shipment. Anritsu’s obligation cover s repairing or replacing product s which prove to be defective during the warranty period.
END-USER LICENS E AGREEMENT FO R ANRITSU SOFTW ARE IMPORTANT-READ CAREFULLY: This End- User License Agreement (EULA) is a legal agreement between you (either an individual or a single entity) and Anri.
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MS278XB O M Safety-1 Safety Symbols To prevent the risk of pe rsonal in jury or loss related to equipment ma lfunction, Anritsu Company uses the following symbols to indicate safety-rel ated informatio n. For your own safety, please read the information carefully before operating the equipment.
Safety-2 MS278XB OM For Safety Wa r n i n g : Always refer to the operation manua l when working near locations at which the alert mark, sho wn on the left, is attached . If the opera tion, etc., is perform ed without heed ing the advice in the operation man ual, there is a risk of personal injury .
MS278XB O M i T able of Content s Chapter 1—General Information 1-1 About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Introduction . . . . . . . . . . . . . . .
ii MS278XB OM 2-7 Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 BIOS Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MS278XB O M iii 3-3 Graphical User Interface Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 -12 Drop-down Menu Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iv MS278XB OM 4-3 Menu Archive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Frequency Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MS278XB O M v 4-4 Parameter En try and Measureme nt Setup Dialog Ar chive . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36 Occupied Bandwidth Setup Dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36 Channel Power Setup Dialog .
vi MS278XB OM 5-5 Modulation Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35 QPSK Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MS278XB O M vii Chapter 6—Software Peripherals 6-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6-2 Signature–MathWorks Connectivity (Option 40 only) .
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MS278XB O M 1-1 Chapter 1 — General Information 1-1 About this Manual This manual provides general information, inst allati on, and operating informati on for the model MS278XB High Performance Spectrum/Vector Signal A nalyzer (S PA/VSA), Signature™.
Product Description General Information 1-2 MS278XB OM 1-2 Product Description The Signature Signal Analyzer is a single instrument th at integ rates state-of-the-a rt spectrum, vector signal and digital modulation analysis into one easy to use instrument.
General Information Product Descrip tion MS278XB O M 1-3 RF/Analog Architecture The RF/analog architecture of the Sign ature Signal Anal yzer is designed to maximize performance over a wide frequency and dynamic range.
Product Description General Information 1-4 MS278XB OM Sof tware Architecture The operating software of the Sig nat ure Signal Analyzer i s based on the Microsoft® .Net platfo rm and takes full advantage of the Windows® XP Professional operating sy stem.
General Information Product Descrip tion MS278XB O M 1-5 External Interfaces In addition to the visible front panel interfaces, th e MS278XB provides the foll owing device interfaces: • IEEE488.2 GPIB: Connects the MS278XB to an external controller for remote programming.
Preventive Mainten ance General Information 1-6 MS278XB OM 1-3 Preventive Maintenance Routine maintenance that can be perfor med by the operator consists of clea ning the data display, protecting the operating system, and replacing a defective line fuse.
General Information Pre ventive Maintenance MS278XB O M 1-7 Operating System Backup and Recovery Signature is configured wi th the Norton® Ghost® backup and recovery system. This system can be accessed from the desktop Start menu or by double cl icking the Ghost icon in the system tray.
Preventive Mainten ance General Information 1-8 MS278XB OM Replacing the Line Fuses The line fuses used in the MS278XB are 6.3A, type T fuse s. The line fuse values ar e pr inted on the rear panel next to the power connector. Always us e a new fuse of the type and rating sp ecified by the fuse markings on the rear panel of the instrument.
MS278XB O M 2-1 Chapter 2 — Prep aration for Use 2-1 Introduction This chapter provide s information for the initial inspection , preparation for use, and instal lation instructi ons for the MS278XB si gnal analyzer. Information is a l so included for interfac ing the MS278XB through: • IEEE-488.
Unpacking the Product Preparation for Use 2-2 MS278XB OM 2-4 Unp acking the Product Initial Inspection Inspect the shipping container for dama ge. If the container or cushioning materia l is damaged, .
Preparation f or Use Assembly (optional) MS278XB O M 2-3 2-5 Assembly (optional) Rack Mount Inst allation Instruments that are ordered from the factory with Opti on 1, Rack Mount, should have the rack mount pre- installed. O ption 1 may b e ordered at a later time.
Assembly (optiona l) Preparation for Use 2-4 MS278XB OM 4. Install the rack mount slides over the threaded studs on the rack mount bracket and handle fixtures as shown in Figu re 2-2, belo w, and secure the m in place w ith the two fasteni ng nuts. (Push the button at 1 to re lease and extend the slide.
Preparation for Use Power On Procedure MS278XB O M 2-5 2-6 Power On Procedure No initial s etup is require d. After un packing, the MS 278XB is ready for use; ho wever, it is strongly recommended that.
Configuration Preparat ion for Use 2-6 MS278XB OM Instrument Shut down To shut down the instrument press and hold the front panel S tandby/Operate key fo r longer than one secon d. Windows will begin the shutdown process and automat icall y close open applications.
Preparation f or Use Configuration MS278XB O M 2-7 Windows XP Configuration This section describes the various aspects of the in strument outside of the main instrument software (Signature applica tion). It specifical ly addresses the various configuratio ns and properties of the “open” Windows XP environment that are set at the Factory.
Configuration Preparat ion for Use 2-8 MS278XB OM Security Settings The following security re lated settings are configured in the instrument: • Internet Explorer Security Settings set to High • F.
Preparation f or Use Configuration MS278XB O M 2-9 Analyzer Configuration This section des cribes how to determine wh ich inst rum ent options are instal led or are available for installation .
Configuration Preparat ion for Use 2-10 MS278XB OM Inst alling Options To install an Option, yo u will need to contact Anrits u customer service to ob tain an installatio n key. Once the key has been obtained, yo u can install an option by pressi ng the Install Now button on the Options menu.
Preparation f or Use Configuration MS278XB O M 2-11 If the key is not vali dated, or there are additional requirements to install the option, you will be notified with a description of the additiona l.
Remote Interface Setup Preparation for Use 2-12 MS278XB OM 2-8 Remote Interface Setup Most of the MS278XB functions (except power on/of f and initializa tion of the hard disk) can be controlled remotely by an external computer/c ontroller via the IEEE-488.
Preparation for Use Remote In terface Setup MS278XB O M 2-13 GPIB Configuration Apply power to the MS278XB and allow the system to po wer up. Once the soft ware has finished loa ding and start-up testing is complete, th e MS278XB is ready to be remotely controlled via the GPIB.
Remote Interface Setup Preparation for Use 2-14 MS278XB OM This brings up the Measurement and Automation Explorer window, below: 3. On the left hand panel, go to My System | Devi ces and Interfaces | GPIB0 (PMC-GPIB), right click on GPIB0, and then select properties fro m the pop-up menu.
Preparation for Use Remote In terface Setup MS278XB O M 2-15 4. In the GPIB Configuration dial og, change the Primary GPIB Address to the desired value. Make similar changes on the Remote PC side by selecting the System Contro ller choice and ch anging the GPIB address as requir ed.
Remote Interface Setup Preparation for Use 2-16 MS278XB OM LAN Setup The LAN can be set up via the RJ45 Ethernet port. Network Connection s The MS278XB supports 10/100 BASE-T. You can connect the analyzer directly to yo ur LAN via the R J45 connector on the rear panel.
Preparation for Use Remote In terface Setup MS278XB O M 2-17 2. From the Control Panel, select Network Connect ions. Figure 2-17. Control Panel Note: If your connectio n already exists and just needs to be mo dified, skip the next step s and p roceed to S tep 1 1.
Remote Interface Setup Preparation for Use 2-18 MS278XB OM 3. In the Network Connections window, under Network Tasks on the left pane, select Create a new connection. 4. The N ew Connection Wizard guides you through the new connection setup. Pr ess Next to continue.
Preparation for Use Remote In terface Setup MS278XB O M 2-19 5. Select Connect to th e network at my workplace and press Next. 6. Select Virtual Private Networ k connection and press Next.
Remote Interface Setup Preparation for Use 2-20 MS278XB OM 7. Enter the name of your new connection and press Next. 8. Enter the Host name or IP address for your network.
Preparation for Use Remote In terface Setup MS278XB O M 2-21 9. Select the connection av ailability of your choice and press Next. 10. If y o u d es ir e t o ha ve an Ic o n p la ce d o n the d es k top, check the box and press Finish to create your new connection.
Remote Interface Setup Preparation for Use 2-22 MS278XB OM 11. If a connection needs to be manually set up or mo dified, you can right click on the connection name in the Netw ork Connections window (Figure 2-17) and select Proper ties from the pop-up dialog box.
Preparation for Use Remote In terface Setup MS278XB O M 2-23 13. For additional setup config urations, select Obtain an IP address automati cally, then select th e Alternate Configuration tab.
Connecting External Device s Preparation for Use 2-24 MS278XB OM 2-9 Connecting External Devices Signature offers a variety of ex ternal device interfaces that facilitate ease of operation and en hance the usability of the instrument.
Preparation fo r Use Connecting Ex ternal Devices MS278XB O M 2-25 Pressing Yes will initiate the Wind ows Add Printer Wizard shown below. If you are installing a network print e r, continue with the Wizard as described below. Otherwise, it is recommended that you follow th e manufacturer’s instal lation instructi ons for your p rinter.
Connecting External Device s Preparation for Use 2-26 MS278XB OM 1. Select the network radio button and press Next. 2. Enter the name and location of your network printer, or select Brows e for a printer, then press Next. Figure 2-32. Add Printer Wizard Figure 2-33.
Preparation fo r Use Connecting Ex ternal Devices MS278XB O M 2-27 3. Select the location of your network printer and press Fi nd Now, then select your printer from t he list and press OK.
Preparation for Storage/Shipment Preparation for Use 2-28 MS278XB OM 2-10 Prep aration for Storage/Shipment Preparation for Storage and Shipment The following paragraphs give instructi ons for preparing the MS278XB for storage or shipment .
MS278XB O M 3-1 Chapter 3 — Instrument Overview 3-1 Introduction This chapter provides information an d instructions on operating the MS27 81B signal analyzer usi ng the front panel controls.
Front Panel Overview Instrument Overview 3-2 MS278XB OM Figure 3-1. MS278XB Front Pan e l Drawing.
Instrument Overview Front Panel Overview MS278XB O M 3-3 Ta b l e 3 - 1 . MS278XB Front Pan el Legend Index Image Description 1 Instrument Name T ag: The instrument name plate indicates the model number and upper fre quency of the instrument.
Front Panel Overview Instrument Overview 3-4 MS278XB OM 9 Rot ary Knob: The rotary knob is used to increment a selected value up or down. 10 Minor Function Keys: The minor fun ction keys are used to activa te se cond- level menus.
Instrument Overview Front Panel Overview MS278XB O M 3-5 16 DVD-ROM/CD-RW Drive T r ay Manual Release: The manual release is used when the drive tray fails to open and needs to be operated manually . 17 Dat a Display and T ouch Panel GUI: Th e graphical user inter face is used to display measurement dat a and interactive finger-touch menus.
Front Panel Overview Instrument Overview 3-6 MS278XB OM Dat a Display The data disp lay area is th e large LCD touch screen. The touch screen is used to display measurements and function menus. The touch screen has the ability to receiv e input from the active soft -keys with a simple press of a finger.
Instrument Overview Front Panel Overview MS278XB O M 3-7 Minor Function Keys The minor function keys are located just left of the major function ke ys and activate se cond-level menu trees on the GUI. Each of the mino r function keys have default para meters associated with them.
Front Panel Overview Instrument Overview 3-8 MS278XB OM Numeric and Cursor Keys The numeric keys are located in a block next to the LCD display. These keys ar e used fo r entering and manipulating dat.
Instrument Overview Front Panel Overview MS278XB O M 3-9 Connectors The front panel connectors consist of the follo wing: • Probe Power Por t: T h i s p o r t s u p p l i e s p o w e r t o y o u r p o w e r probe. Table 3-2 sho ws the probe power port pinout.
Front Panel Overview Instrument Overview 3-10 MS278XB OM DVD-ROM/CD-RW Drive The DVD-ROM/CD-RW drive is capable of reading digita lly stored data on a variety of CD media. The drive is also capable of writing digital data to CD-R and CD-RW media. You can use either 12 cm or 8 cm diameter media.
Instrument Overview Front Panel Overview MS278XB O M 3-11 1. To release t h e drive tray, insert a 1.0 mm diamet er paper clip into the manual relea se hole as shown in Figure 3-5. 2. Gently slide the tray open and rem o ve your disk fro m the drive tray.
Graphical User Interfac e Overview Instrument Overview 3-12 MS278XB OM 3-3 Graphical User Interface Overview This section provides descriptions of the front panel graph ical user interface, here fo rth referred to as the GUI . The GUI is the LCD touch screen that can be accessed thro ugh direct touch or with a pointing device such as a mouse.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-13 Drop-down Menu Bar The drop-down menus along the top of the screen confor m to MS-Windows standards. They provide consistent application interfacin g as that found in standard MS -Windows applications.
Graphical User Interfac e Overview Instrument Overview 3-14 MS278XB OM Front Panel The Front Panel drop-down menu provides access to all of the instrument’s ma in menus and sub-menus. This is useful when the instrum ent is bein g accessed via the remote desk top feature.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-15 To o l s The Tools drop-down menu provides access to the Cu stomize Tool Bar dialog and MATLAB. The To ols drop-down menu can be quickly acce ssed using the Al t-T keyboard combination .
Graphical User Interfac e Overview Instrument Overview 3-16 MS278XB OM About Anritsu Signature The About Anritsu Signature dialog con tains informat ion about the ana lyzer’s software, provides a lega l disclaimer, and offers a li nk to the Window’s system informati on file.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-17 Main Menu Bar The Main Menu bar contains a set of icons that access the analyzer’s measurement and setup configuration sub-menus. Pressing an icon will refresh the sub-menu t r ee with the related set of sub-menus.
Graphical User Interfac e Overview Instrument Overview 3-18 MS278XB OM The Sweep icon opens the “Sweep Main Menu” on pag e 4-27. The Zero S pan icon sets the spa n to zero span. The Last S pan icon recalls the previous spa n se tting. The T rigger icon opens the “T rigger Main Menu” on p age 4-29.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-19 Sub-menu T rees After pressing one of the Main Menu icons, the main menu tree is update d with the related sub-menus. Each sub-menu and its related functions are documented in Chapter 4.
Graphical User Interfac e Overview Instrument Overview 3-20 MS278XB OM Figure 3-15 b e low illu strates the te rminator fly-out menus that you may encounter when entering data: Figure 3-16, below, ill.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-21 Modulation Graphs CF Step Sizes Detector T ypes T rigger Sources T race St ates Modulation T ypes I/O Configuration Sp an Preset s St andards Figure 3-16.
Graphical User Interfac e Overview Instrument Overview 3-22 MS278XB OM Spreading Fac t or Phase Error Constellation Rot ation Magnitude Scale Input RACH/TCP Command Pattern CDP Zo om Factor T ran smit Diversity T ransmit Power Ste p S i z e Figure 3-16.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-23 T oggle Buttons Several menus offer a simple on/off type o f mode sele ction. W hen these controls are present, there is a check mark indicating the current selection. To toggle the selection to the other mode, press on the control button.
Graphical User Interfac e Overview Instrument Overview 3-24 MS278XB OM Drop-down Selection Menus Many menus offer drop-down selections that contain a variety of choices. To a ccess a drop-down selection menu, press on the down arrow for the parameter you would like to ch ange and the drop-d own selections will expand.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-25 Alpha-Numeric Entry Alphanumeric entry can be accomplished through an ex ternal physical key board or through the on-screen software keyb oard. Figure 3 -20 shows the on- s creen keyb oard interface.
Graphical User Interfac e Overview Instrument Overview 3-26 MS278XB OM Graticule The Graph area is the main container for all of the meas urement displays.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-27 Ta b l e 3 - 6 . S pectral Analysis Graticule Le gend Index Description 1 St atus Indicator: This indicator (ast erisk) is dis played when th e current instrument set up does no t correspond to the one which was applied when a trace is displayed.
Graphical User Interfac e Overview Instrument Overview 3-28 MS278XB OM Dat a D isplays The following figures (Fi gure 3-22 to Figure 3-27) sh ow the measurem ent tables that are displayed for the one-button RF measurements. Figure 3-22. Marker T able with Delt a and Noise Marker Figure 3-23.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-29 Figure 3-26. Adjacent Channel Power Measurement T able Figure 3-27. Multi-Carrier Power T able.
Graphical User Interfac e Overview Instrument Overview 3-30 MS278XB OM V ector Signal Analysi s Graticule Disp lays Figure 3-28 shows trace data whil e using the va rious modulation graph types i ndic.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-31 The Summary graph type displays the position and value (bit s) of the demodu lated signal. Ta b l e 3 - 7 . V ector Signal Analysis Graticule Legend Index Description 1 Input St atus: Indicates ADC overload and L.
Graphical User Interfac e Overview Instrument Overview 3-32 MS278XB OM Figure 3-30 is a summary table showing the key modulation quality measurements an d the bit stream for one of the codes.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-33 Signature can also displa y a variety of da ta combination s as shown in the followin g figures.
Graphical User Interfac e Overview Instrument Overview 3-34 MS278XB OM For more detail about making modulation measurements and setting up the displays, refer to the appropriate sections in Chapter 5.
Instrument Over view Graphical User Interface Over view MS278XB O M 3-35 Instrument Messages and St atus Bar The Status Bar Area is used for instrument wide messa ges to show Status, Warnings , Errors, etc. Typically, any warning messages di splayed in this area will be shown until you perform some action on the interface.
Graphical User Interfac e Overview Instrument Overview 3-36 MS278XB OM External Keyboard Hot-key Functions When the MS278XB is equipp ed with an external keyboard, addit ional input is available through various keyboard combinati ons (hot keys). Table 3-8 lists the hot keys and their function.
Instrument Over view Instrument Operation MS278XB O M 3-37 3-4 Instrument Operation Changing Setup s When a parameter is changed via the front panel, or a message is received containi ng new setup information, the system vali dates the requested change, and then goes into the “setup” state while the new setup information is a ssimilated.
Rear Panel and Connector Diagrams Instrument Overview 3-38 MS278XB OM 3-5 Rear Panel and Connector Diagrams Figure 3-34, below, illustrates the MS 278XB’s rear panel features and connectors. Tabl e 3-9, on the following pages, describes the indices shown, li sts Input/Output specificat ions for ea ch connector, and lists the connector type.
Instrument Over view Rear Panel and Connector Diagr ams MS278XB O M 3-39 Ta b l e 3 - 9 . MS278XB Rear Panel Index Le gend Index Name/Image De scription Connector 1 Air Exhaust Grill The rear panel exhaust grill pr ovides for cooling of the instruments internal components.
Rear Panel and Connector Diagrams Instrument Overview 3-40 MS278XB OM 6 GPIB Interfa ce IEEE 4 88 standard 24-pin connecto r that provides for remote ly controlling the MS278XB from an ex ternal computer /controller via the IEEE-488 bus (GPIB). T able 3-1 0 describes the signal lines and shows the connecto r pinout.
Instrument Over view Rear Panel and Connector Diagr ams MS278XB O M 3-41 10 PS/2 Keyboard Interface Provides connection to an external PS/2 keyboard. 6-pin DIN 11 Reference Output Provides a reference.
Rear Panel and Connector Diagrams Instrument Overview 3-42 MS278XB OM 18 Q Input VSA Q differe ntial inp ut for baseband I/Q 50 Ω or 1 M Ω Switchable unbalanced or differential 1 V olt max BNC Femal.
Instrument Over view Rear Panel and Connector Diagr ams MS278XB O M 3-43 T able 3-10. Index 6: IEEE 488.2 GPIB Con nector Pinout Diagram Pin Name Description 1-4 DIO 1 th rough DIO 4 Data Input/Output. Bit s are HIGH when the data is logical 0 and LOW when the data is logical 1.
Rear Panel and Connector Diagrams Instrument Overview 3-44 MS278XB OM T able 3-1 1. Index 7: 25-pin Parallel Printer Connector Pinout Diagram Pin Name Description 1 S trobe S trobe signal drop s TTL l.
Instrument Over view Rear Panel and Connector Diagr ams MS278XB O M 3-45 T able 3-13. Index 8: 15-pin XGA Con nector Pinout Diagram Pin Name Description 1R e d Red Vi deo (75 Ω , 0.7 V p-p ) 2G r e e n Green V ideo (75 Ω , 0. 7 V p-p ) 3B l u e Blue Video (75 Ω , 0.
Rear Panel and Connector Diagrams Instrument Overview 3-46 MS278XB OM T able 3-15. Index 19: 8-pin Ether net RJ45 Connector Pinout Diagra m Pin Name Description 1 TX+ T ransmit data (> +3 volt s) 2.
MS278XB O M 4-1 Chapter 4 — Front Panel Menus 4-1 Introduction This chapter provides a comprehe nsive collection of annotated front panel menus and displays . Each illustration is accompanied with a desc ription that incl udes information on how to use the functions availabl e in that particular display.
Quick Referenc e Front Panel Menus 4-2 MS278XB OM Frequency Menu Amplitude Menu Bandwid th Menu Display Menu Measure Menu T race Menu T rigger Menu System Menu Sweep Menu File Menu Marker Men u Figure 4-1.
Front Panel Menu s Quick Refe rence MS278XB O M 4-3 Ta b l e 4 - 2 . List of Dialogs Dialog Page Occupied Bandwid th Setup Dialog 4-36 Channel Power Setup Dialo g 4-37 Adjacent Channel Power (ACP) Set.
Menu Archive Front Panel Menus 4-4 MS278XB OM 4-3 Menu Archive This menu archive illustrates a co mprehensive set of the main menus and sub-menus contained in the MS278XB GUI. The structure follows that of what one would encounter when normal ly interfacing with the analyzer.
Front Panel Menu s Menu Archive MS278XB O M 4-5 Frequencies Menu The Frequencies Menu lets you set the following frequency parameters: Ta b l e 4 - 3 . Frequencies Menu Center: T o set the center frequency , press in the Center p arameter field and en ter a new value using the numeric keys.
Menu Archive Front Panel Menus 4-6 MS278XB OM Step Size and Offset Menu The Step Size and Offset Menu lets you set the ce nter frequency step size and frequency offset parameters.
Front Panel Menu s Menu Archive MS278XB O M 4-7 Amplitude Main Menu The Amplitude ma in menu can be q uickly accessed by using the Ctrl-Shift-W keyboard combination.
Menu Archive Front Panel Menus 4-8 MS278XB OM Amplitude Menu The Amplitude menu lets you set the reference level, attenuation level, attenua tion mode, and scale-per- division o f the grati cule’s Y-axi s . Ta b l e 4 - 5 . Amplitude Menu Reference Level: The reference level is set at the top line o f the graticule.
Front Panel Menu s Menu Archive MS278XB O M 4-9 Y -Axis Options Menu The Y-Axis Options menu lets you se t the following parameters: Ta b l e 4 - 6 . Y -Axis Options Menu Scale T ype: The Sc ale T ype bu tton is used to toggle the vertical scale type between Logarithmic or Linear scal es.
Menu Archive Front Panel Menus 4-10 MS278XB OM Bandwidth Main Menu The Bandwidth main menu can be quickly accessed by using the Ctrl-Shift-E keyboard combin ation. The Bandwid th main menu let s you adjust the followin g: Resolution Bandwid th and Mode Video Ba ndwidth and Mode Sweep T ime and Mode Bandwid th Coupling Parameters Figure 4-4.
Front Panel Menu s Menu Archive MS278XB O M 4-11 Bandwidth Menu The Bandwidth menu l e ts you select between a utoma tic or manual resolution bandwidth and set the resolution and video bandwi dth s when in the manual mode.
Menu Archive Front Panel Menus 4-12 MS278XB OM Auto Coupling Menu The Auto Coupling menu lets you select the co upling modes and set the coupling p arameters. Ta b l e 4 - 8 . Auto Coupling Menu T o select the fully coupled mode, press the All Auto button.
Front Panel Menu s Menu Archive MS278XB O M 4-13 Marker Main Menu The Marker main menu can be quickly accessed by using the Ctrl-Shi ft-R keyboard comb ination. The Marker main menu let s you set the: Active Marker and M a rker S tatus Marker to Next Opt ions Marker Configuratio n Pa rameters Display Line Setup Parameters Figure 4-5.
Menu Archive Front Panel Menus 4-14 MS278XB OM Marker Select Menu The Marker Select menu lets you toggle the markers on or off, set the active marker frequency, and select between normal or delta markers.
Front Panel Menu s Menu Archive MS278XB O M 4-15 Modulation Measurement s When in the WCDMA measur ement mode with the QPSK or Composite graph type selected, the following marker selections are availa.
Menu Archive Front Panel Menus 4-16 MS278XB OM Modulation Measurement s When in the WCDMA measurement mode with the Random Access Chann el graph type selected, the following marker selecti ons ar e av.
Front Panel Menu s Menu Archive MS278XB O M 4-17 Marker to (–>) Menu The Marker To (–>) menu lets yo u perform the following actions: Modulation Measurement s When in the WCDMA measurement m.
Menu Archive Front Panel Menus 4-18 MS278XB OM Marker Config Menu The Marker Config me nu lets you s elect the foll owing: Display Lines Menu The Display Lines menu lets you display limit lines.
Front Panel Menu s Menu Archive MS278XB O M 4-19 Measurement Main Men u The Measurement main menu can be quickly accessed by using the Ctrl-Sh ift-T keyboard combination.
Menu Archive Front Panel Menus 4-20 MS278XB OM Measurem ent Menu The Measurement menu gives you acce ss to setup various measurement types, such as Spectrum, RF, and a variety of modulation measurements.
Front Panel Menu s Menu Archive MS278XB O M 4-21 QAM/PSK Measureme nt T ype QAM/PSK Measurement T ype: T o change the measureme nt type, press on the Measurement T ype button and select one of the fol.
Menu Archive Front Panel Menus 4-22 MS278XB OM WiMAX Measurement Ty p e WiMAX Measurement T ype: T o chang e the meas urement type, press on the Measurement T ype button and select one of the followin.
Front Panel Menu s Menu Archive MS278XB O M 4-23 T race Main Menu The Trace main men u can be qui ckly accessed b y using the Ctrl-Shi ft-A keyboard comb ination. The T race main menu lets you configur e and set up the: Active T race Display T race Mode T race Averaging Detectors Figure 4-7.
Menu Archive Front Panel Menus 4-24 MS278XB OM T race Config Menu The Trace Config menu lets you select the active trac e, trace state, detector type, and set various trace options. Note: The T race Menu is only available in S pectrum and RF measurement modes.
Front Panel Menu s Menu Archive MS278XB O M 4-25 Display Main Menu The Display main menu can be quickly accessed by usi ng the Ctrl-Shift-S keyboard combi nation. The Display main menu lets you select the: T askbar Vi ew Desktop View Video Inver s ion T ouch Screen Calibrat ion Figure 4-8.
Menu Archive Front Panel Menus 4-26 MS278XB OM Display Options Menu The Display Options menu le ts you set up limit lines on the grati cule for display and measurement purposes. T ouch Screen Menu The Touch Screen menu lets you calibrate the touch screen.
Front Panel Menu s Menu Archive MS278XB O M 4-27 Sweep Main Menu The Sweep main menu can be quickly accessed by using the Ctrl- Shift-D keyboard combination. The Sweep Main M enu lets you: Set the Sweep T ime Parameter Select the Sweep Mode S tart a Single Sweep Select the Sweep T ype Figure 4-9.
Menu Archive Front Panel Menus 4-28 MS278XB OM Sweep Menu The Sweep menu lets you lets you select between conti nuous or single sweep mode s, and to start a single sweep. T able 4-17. Sweep Menu Sweep Ti me: T o set the sweep time, press in the Sweep T ime p arameter field and enter the desired sweep time value.
Front Panel Menu s Menu Archive MS278XB O M 4-29 T rigge r Ma in Menu The Trigger main menu can be quickly accessed by using the Ctrl-Shift-F keyboard combination. The T rigger main menu lets you: Select the T rigger Source Set the Trigger Level Set the T rigger Edge Set the T rigger Delay Figure 4-10.
Menu Archive Front Panel Menus 4-30 MS278XB OM T rigger Menu The Trigger menu lets y ou configure the following: T able 4-18. T rigger Menu T rigger Source: T o change the trigger source, press on the.
Front Panel Menu s Menu Archive MS278XB O M 4-31 System Main Menu The System main menu can be quickly accessed by using the Ct rl-Shift-G keyboard combination.
Menu Archive Front Panel Menus 4-32 MS278XB OM Rear Panel Control Menu The Rear Panel Control menu lets you configure the rear panel input/outpu t ports and toggle the no ise source power On or Off. Calibration Menu The Calibration menu lets you sel ect and apply a ca libration routine for spe cific hardware sy stems.
Front Panel Menu s Menu Archive MS278XB O M 4-33 Configuratio n Menu The Configuration menu lets you co nfigure the IO, o ptimize phase no ise, and sele ct filtering. Remote Control Menu The Remote Control menu lets you return local control from remote operations, such as GPIB remote control.
Menu Archive Front Panel Menus 4-34 MS278XB OM Service Menu The Service menu l ets you toggle the i nternal 50 MHz calibrator Off and On and initiate a calibration alignmen t. T able 4-24. Calibrator Menu Calibrator: T o toggle the internal 50 MHz calibrator Off or On, press on the calibr ator Off/On toggle button.
Front Panel Menu s Menu Archive MS278XB O M 4-35 File Main Menu The File main menu can be quickly accessed by using the Ctrl-Shi ft-H keyboard combination. File Menu The File menu lets you save an d r ecall measurement setup inform ation and send the measurement display to a printer.
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-36 MS278XB OM 4-4 Parameter Entry and Measurement Setup Dialog A rchive This property an d dialog menu archiv e illu strates t.
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-37 Channel Power Setu p Dialog Channel Power measures the power and power spectral de nsity in the cha nnel ban dwidth that you specify in the following dialogs: Channel Power T a b Channel BW: Sets the bandwidth over which the m easureme nt is made.
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-38 MS278XB OM Adjacent Channel Powe r (ACP) Setup Dialog Adjacent Channel Power (ACP) is a measure of the powe r that leaks into adjacent transmit channels.
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-39 ACP T ab (2 of 2) Alt2 Channel: T oggles the Alt2 channel measurem ent off or on. Alt2 Channel W id th: Sets the bandwid th of the Alt2 channel. Range: 1 Hz to 8 GHz Default: 5 MHz Alt2 Channe l Sp acing: Set s the spacing between the main and Al2 chan ne l.
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-40 MS278XB OM Multicarrier Channe l Power Setup Dialog Multicarrier Channel Power is similar to the ACP measurement and ca n be set up a s follows: T ransmit Channels T ab Number of Channels: Set s the number of channels.
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-41 Adj/Alt Cha nnels T ab Adj Channel: T oggles the adjacent ch annel On or Off. Adj Channel Wid th: Sets the adjacent chan nel width. Range: 1 Hz to 8 GHz Default: 5 MHz Adj Channel Sp acing: Sets the adjacent channel spacing.
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-42 MS278XB OM ACP Reference T ab ACP Reference Channel Select ion Mode: Selects the ad jacent channel power reference mode of: Select Channel Highest Power Channe l Lowest Power Chan nel Channel #: Enter the channel numbe r for the reference (chann el 1 through 12).
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-43 CCDF Setup Dialog Occupied Bandwidth integrates th e po wer of the displaye d spectrum a nd pu ts markers at the bandwidth limits as specified in the measurement setu p fields.
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-44 MS278XB OM Spectrum Mask Setup Dialog Spectrum Masks define limits typically used for compliance testing. Apply Mask T ab T o apply or remove a sp ectrum mask from the measurement, select a mask from the list and toggle the mask to On or Off.
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-45 Define S pectrum Mask Dialog Defining a spectrum mask consist s of entering the available mask definitions provided on the De fine S pectrum Mask dialog. On ce the mask is defined, press Save to save the mask.
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-46 MS278XB OM VSA Modulation Parameters Setup Dialog The VSA Modulation Parameters dialog allows you to specify the modulat i on setting for your measurement.
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-47 Advanced T ab T racking Range: T oggles the tracking range on or off.
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-48 MS278XB OM WCDMA Graph T ype Dialog The WCDMA Graph Ty pe dialog let s you select th e graph type display for your measurement. QPSK T ab For QPSK measurements, the following graph types can be selected: V ector Diagram Constellation Diagram Power vs.
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-49 Code Domain Power T ab For Code Domain Power me asurements, the follo wing graph types can be selected: Code Domain Power Code Domain Power with Zoom Code Domain Error Code Domain Error with Zoom Summary Display Base St ation/User Equipment: Uplink or Downlink.
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-50 MS278XB OM Other T ab The following graph types can be selected for additional Downlink measurement s: Sync Channel (SCH) Summary and Slot Number for Data Bit s T ransm it Power Control T ransm it Power vs.
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-51 WCDMA Setup Dialog The WCDMA Setup dialog allows you to sp ecif y the WCDMA settings for your measurement. Acquisition Config T ab Input: Narrowband RF Input. IQ Input Impedance: Select between 50 Ω or 1M Ω .
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-52 MS278XB OM Demodulation Config (1 ) T ab Scrambling Code: Manually set s the modulation scrambling code or selects Auto. Scramble Code T ype: Selects between long an d short.
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-53 Demodulation Config (2) T ab IQ Origin Offset for EVM: Select to include or exclude the IQ origin of fset for the error vector magnitude. PCDE Spread Factor: Select either 4 or 256 for the peak code domain err or spreading factor .
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-54 MS278XB OM TPC Limit Edge Definition Dialog The TPC Limit Edge Defini tion dialog lets you ma nually enter the transmit power control limit edge definitions. TPC Config T ab Time Ra nge: Enter the number of frames for the time range.
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-55 Channel T able Editor Dialo g The Channel Table Editor dialog l ets you manually enter the active code chan nel setup. Channel T a bl e Ed ito r T he Channel T able Editor is used to create or edit channel tables.
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-56 MS278XB OM Customize T ool Bar Dialog The Customize Tool Bar Dialog allow s you to add and remove icons to suit your needs. Refer to “Customizing th e Tool Bar” on page 2-11 for more information.
Front Panel Menus Parameter Entry and Measurement Setup Dia log Archive MS278XB O M 4-57 MA TLAB Setup Dialog The MATLAB Setup dialog allows you to launch The Math Work s MATLAB application . In this dialog, you can toggle the MATLAB connection On and Of f, and select which information to send (Active Trac es and I/O Vectors).
Parameter Entry and Meas urement Setup Dialog Archive Front Panel Menus 4-58 MS278XB OM Advanced T ab Send T o MA TLAB: IQ Dat a: T oggles the IQ Data (vectors) on or off and en ables the transfer configurations below .
MS278XB O M 5-1 Chapter 5 — Measurement s 5-1 Introduction This chapter prov ides procedures on how to make several common spectr um analyzer measurements. It is assumed that you have a ba sic understanding of spectrum analyzer measurements and tha t the MS278XB front panel and menu structure is famili ar to you.
Basic Measurement Setups Measurements 5-2 MS278XB OM Setting the Center Frequency The center frequency is set at th e center of the graticule display. 1. Press the Freq icon on the main menu bar, or press the Frequency key on the in strument front panel, to display the Frequency menu below: 2.
Measurements Basic Measurement Set ups MS278XB O M 5-3 Setting the Frequency Sp an The frequency span is set su ch that the graticule displa y shows the entire span fr om the left edge of the graticule to the right edge of the graticule.
Basic Measurement Setups Measurements 5-4 MS278XB OM Setting the St art and Stop Frequencies The start frequency is set at the left side of the graticule displa y and the st op frequency is set at the right side of the graticule display.
Measurements Basic Measurement Set ups MS278XB O M 5-5 Setting the Reference Level The reference level is set at the top o f the graticule di splay. Measurements can only be made on signal peaks that .
Basic Measurement Setups Measurements 5-6 MS278XB OM Setting the Input Attenuation The input attenuation is set to brin g the input signal down to an opti mum level range below +30 dBm and to protect the input stage of the analyz er from damage. The input attenuatio n can be selected between Manual or Auto.
Measurements Basic Measurement Set ups MS278XB O M 5-7 Setting the Scale/Div The Scale/Div selection is only avai lable when the instru ment is set to Log mode. Th e Scale/Div setting adjusts the number of units per v ertical division of the graticule displa y.
Basic Measurement Setups Measurements 5-8 MS278XB OM Setting the Resolution Bandwid th The Resolution Bandwidth (RBW) sets th e filter response of the analyzer’s IF stages. This is defined as the width of the filter response at its 3 dB (50% ) point from maximum.
Measurements Basic Measurement Set ups MS278XB O M 5-9 Setting the Video Bandwid th The Video Bandwidth (VBW) sets the filter response of th e analyzer’s Video processor. 1. Press the BW icon on the main menu bar, or press the Bandwidth key on the instrument front panel, to display the Bandwidth menu below: 2.
Basic Measurement Setups Measurements 5-10 MS278XB OM Setting the Sweep Time The Sweep Time sets the duration of a full span sweep. When the sweep time is set to Manual mode, the RBW and VBW settings need to be set to Auto to allow for their automatic determination.
Measurements Basic Measurement Set ups MS278XB O M 5-11 Setting the Bandwid th Coupling Modes The Bandwidth Auto Coupling modes (Span/RBW and VB W/RBW) sets the coupling ratios of the span, RBW , and VBW. These ratios can be set au tomatically or manually as follows: 1.
Basic Measurement Setups Measurements 5-12 MS278XB OM Setting Markers Markers can be used t o measure the frequency and peak power values as follows: 1. Press the Marker i con on the main menu b ar, or press the Marker ke y on the instrument fro nt panel, to display the Marker Select menu below: 2.
Measurements Basic Measurement Set ups MS278XB O M 5-13 5. To activate the marker table, sele ct t he Marker Config menu and pre ss the Marker Tabl e Off/On toggle button.
Basic Measurement Setups Measurements 5-14 MS278XB OM Setting T race Modes Signature can display up to five traces, each using d i ff erent trace modes and detector s.
Measurements Basic Measurement Set ups MS278XB O M 5-15 3. Press the Trace Mo de button and sele ct a trace mode from the fly-out menu belo w to turn the trace on. Note: Refer to Displaying T race Modes on page 5-26 for a detailed description of the trace modes.
Basic Measurement Setups Measurements 5-16 MS278XB OM 4. To change the detector for the curre nt ly active trace, pres s the Detector button and select a new detector from the fly-out menu below: Note: Refer to Displayin g Detectors on page 5-25 for a mo re detailed description o f the differ ent detectors.
Measurements Basic Measurement Set ups MS278XB O M 5-17 Configuring th e T riggering Signature has a v a riety of trigg er modes and configur ations you can setup to hel p you display signals.
Basic Measurement Setups Measurements 5-18 MS278XB OM 3. Press in the Trigger Level paramete r field a nd enter the trigger level usi ng the keypad, then sel ect the appropriate termina tor from the fly-o ut menu belo w: 4. Select the trigger slope by pressing the Rising/Falling toggle button.
Measurem ents Measurement Examples MS278XB O M 5-19 5-3 Measurement Examples The examples in this section give a simple step-b y-step instruction on how to set up the MS278XB to pe rform the measurement and show a final scr een shot of the measurement re sult.
Measurement Examples Measurements 5-20 MS278XB OM Measuring a CW Carrier The following example sh ows a basic measurem ent of a 0 dBm, 5 GHz carrier using markers: 1. Preset the analyzer using the Pres et button. 2. On the analyzer, set up the followin g: Center Frequency: 5 GHz Span: 20 kHz RBW: 200 Hz 3.
Measurem ents Measurement Examples MS278XB O M 5-21 Measuring Harmonics The following example shows a basic me asurement of th e second and third harmonic of a + 10 dBm, 1 GHz carrier using delta markers: 1. Preset the analyzer using the Preset butto n.
Measurement Examples Measurements 5-22 MS278XB OM Displaying Wide Band FFT Mode The following example shows a modulated, 1 GHz signal in the wide band FFT mode: 1. Preset the analyzer using the Pres et button. 2. On the analyzer, se t the center frequency to 1 GHz.
Measurem ents Measurement Examples MS278XB O M 5-23 Displaying Narr ow Band FFT Mode The following example shows a modulated, 1 G Hz signal in the narrow band FFT mode: 1. Preset the analyzer using the Preset butto n. 2. On the analyzer, set the ce nter frequency to 1 GHz.
Measurement Examples Measurements 5-24 MS278XB OM Measuring a Pulse in the T ime Domain The following example shows a triggered measuremen t of a pulsed 1 GHz signal in zero-span mode: 1. Preset the analyzer using the Pres et button. 2. On the analyzer, set up the followin g: Center Frequency: 1 GHz Span: 0 Hz Reference Level: 10 dBm 3.
Measurem ents Measurement Examples MS278XB O M 5-25 Displaying Detectors The following example shows an ex ample of a 1 GHz carrier using the Average, RMS, Minim um, and Maximum detectors: 1. Preset the analyzer using the Preset butto n. 2. Set the center frequency to 1 G Hz and the span to 300 kHz.
Measurement Examples Measurements 5-26 MS278XB OM Displaying T race Modes The following example shows the display of a 1 GHz ca rrier using the MaxHold, Average, and Mi nHold trace states: 1. Preset the analyzer using the Pres et button. 2. Set the cen ter freque ncy to 1 G Hz and the sp an to 300 kHz.
Measurem ents Measurement Examples MS278XB O M 5-27 Measuring Phase Noise The following example shows a basic me asurement of a 1 GHz carrier’s 100 kHz phase noise using markers: 1. Preset the analyzer using the Preset butto n. 2. On the analyzer, set up the fo llowing: Center Frequency: 1 GHz Span: 1 MHz RBW: 1 kHz Sweep Time: 30 seconds 3.
RF Measurements Measurements 5-28 MS278XB OM 5-4 RF Measurement s This section describe s the one-button Spe ctrum RF measure ments that are av ailable.
Measurem ents RF Measurements MS278XB O M 5-29 Third Order Intercept Measurement The Third Order Intercept (TOI) measurement computes and displa ys the output in tercept point and places markers on the trace to indicate the measur ed signals and their third-order products.
RF Measurements Measurements 5-30 MS278XB OM Occupied Bandwid th Measurement The Occupied Bandwidth (OBW) measurement shows the ban dwidth that incl udes most of the channel energy. This is usually 9 9%, but can be adju sted. It al so shows the bandwidth that is occupi ed down to X dB below the signal level, which ca n also be adjusted.
Measurem ents RF Measurements MS278XB O M 5-31 Channel Power Measurement The Channel Power (CP) measurement is similar to a power meter. It shows the total power from a transmitter, but the measurement is more accurate than a power meter as it is frequency sele ctive and can be made on lower amplitude signals.
RF Measurements Measurements 5-32 MS278XB OM Figure 5-1 1. Channel Power Measurement.
Measurem ents RF Measurements MS278XB O M 5-33 Adjacent Channel Power Measurement Adjacent Channel Power (ACP) is a me asure of the power that l eaks into adjacent transmit channels.
RF Measurements Measurements 5-34 MS278XB OM Multicarrier Channel Power Measurement The Multicarrier Channel Power (MCCP) measurement is similar to the Channel Powe r measuremen t (refer to Channel Power Measurement on page 5-31).
Measurements Modulation Measurement s MS278XB O M 5-35 5-5 Modulation Measurement s This section outl ines a fe w common modulation measurements performed by Signature.
Modulation Measureme nts Measurements 5-36 MS278XB OM QPSK Measurement The following modulation measurements use a 2 GHz test signal at 5 dBm with the analyzer set up as follows: • Modulation Format: QPSK •F i l t e r T y p e : vNyquist • Roll-off Factor (a): 0.
Measurements Modulation Measurement s MS278XB O M 5-37 EVM vs. Time Graph of QPSK Modulated Test Signal Figure 5-15. EVM/T ime Graph of QPSK Modulated T est Signal.
Modulation Measureme nts Measurements 5-38 MS278XB OM Summary Table of QPSK Modulated Test Signal Figure 5-16. Summary T able of QPSK Modulated T est Signal.
Measurements Modulation Measurement s MS278XB O M 5-39 Eye (I or Q) Graph of QPSK Modulated Test Signal Figure 5-17. Eye Graph of QPSK Modulated T est Signal.
Modulation Measureme nts Measurements 5-40 MS278XB OM QAM Measurement The following modulation measurem ents use a 2 GHz, 64QAM modula ted test signal at 5 dBm with the analyzer set up as follows: • Modulation Format: 64 QAM • Roll-off Factor (a): 0.
Measurements Modulation Measurement s MS278XB O M 5-41 Power vs. Time Graph of 64 QAM Modulated Test Signal Figure 5-19. Power/T ime Graph of 64 QAM Modulated T est Signal.
Modulation Measureme nts Measurements 5-42 MS278XB OM WCDMA Measurement s All of the common modulation quality measurements are available, similar to the Signature Option 38 (QAM/ PSK Modulation Analysis); however, since this is focuse d on WCDM A, the symbol (chip) rate i s fixed at 3.
Measurements Modulation Measurement s MS278XB O M 5-43 Two key measurements for CDMA are the Code Do main Power (C DP) and Cod e Domain Error (CD E). Code Domain Power Measurement Signature can di splay the Code Domain Power with an opti onal zoom window or an op tional summary table, or both.
Modulation Measureme nts Measurements 5-44 MS278XB OM The Code Domain Power graph shows the power in each code and a llows a comparison to the total signal power in terms of absolute power.
Measurements Modulation Measurement s MS278XB O M 5-45 The followin g CDP display is with the summ ary table view active. The tab le can be scroll ed by using the scroll buttons on the right side of the table.
Modulation Measureme nts Measurements 5-46 MS278XB OM The following CDP display is with the zoom view acti ve . The zoom view can be s crolled by using the scroll buttons on the bottom of the graph.
Measurements Modulation Measurement s MS278XB O M 5-47 The following CDP display is wit h both the zoom and su mmary table vi ews active. The views can be scrolled by using the scroll buttons next to each of the graphs.
Modulation Measureme nts Measurements 5-48 MS278XB OM Code Domain Err or Measurement Signature can display the Code Domain Error with an optional zoom window or an optional s ummary table, or both. In each case, the absolut e power in each active code is shown.
Measurements Modulation Measurement s MS278XB O M 5-49 The CDE graphs shows the error of each code and is similar to the EVM of each code, but it is in dB.
Modulation Measureme nts Measurements 5-50 MS278XB OM QPSK Measurement The next class of modulation quali ty measurements is when yo u don’t have a full WCDMA transmitter, but you want to measure the modulation quality anyw ay. This is a common test for RF components, for example.
Measurements Modulation Measurement s MS278XB O M 5-51 The following display is a constell ation measuremen t along with the key summary measurements (EVM, IQ Offset, Frequency Error, Ma gnitude Error and Phase Error).
Modulation Measureme nts Measurements 5-52 MS278XB OM Signature can also show displays of multiple measurements at once, such as this All Errors vs. Time display. This display simultaneously shows EVM, Magnitude Error an d Phase Error, all versus time.
Measurements Modulation Measurement s MS278XB O M 5-53 Eye diagrams are also availa ble. These can be of the I channel, the Q channel, or both at once as show here.
Modulation Measureme nts Measurements 5-54 MS278XB OM Composite Measurement The next class of measure ments are of the Composite signal. This measures the entire coded W CDMA signal and provides metrics for the entire signal in both uplink and downlink modes.
Measurements Modulation Measurement s MS278XB O M 5-55 Below is a com posite conste llation along wi th the su mmary table. The composit e constellation includes the effects of all active codes as well as noise. If th ere was only one active code, the constellation would be very simple—it would look like Q PSK.
Modulation Measureme nts Measurements 5-56 MS278XB OM Single Code Measurement The next class of modulation qu ality measurements fo cuses on a single W CDMA co de. This is again very similar to the QPSK and Composite measurement sele ctions, but with a few sign ificant diff erences.
Measurements Modulation Measurement s MS278XB O M 5-57 The following figure is an example of the single -cod e measure ments. This is the Code Powe r vs.
Modulation Measureme nts Measurements 5-58 MS278XB OM This single-code example shows the 16QAM constellation of an HSDPA si gnal . This is Test Model 5 wi th two high speed data channels. The selected code (#4 at Spreading Factor 16) is shown highlight e d.
Measurements Modulation Measurement s MS278XB O M 5-59 Below is the Summary table showin g the key modulation quality measurements and the b it stream for one of the codes.
Modulation Measureme nts Measurements 5-60 MS278XB OM Below is an example of the summary table showing the bit stream of a high-speed channel in binary.
Measurements Modulation Measurement s MS278XB O M 5-61 Single Code with Compressed Mo de Measurement The final cla ss of measure ments is of Sing le Codes in Co mpressed Mode. W e are calling this a separa te “class” as there are a number of significant di stin ctions from the usual single-code measurements.
Modulation Measureme nts Measurements 5-62 MS278XB OM For all other Single Channel measur ements (other than the Code Po wer vs. Slot Overview), you can choose either the No rmal or Compresse d display. Th e measurement results will then be for the signal assuming that it is in the mode of the chosen An alysis Start and Length.
Measurements Modulation Measurement s MS278XB O M 5-63 WCDMA Uplink Code Domain Power The Code Domain Power (CDP) me asurement fo r Upli nk measures the CDP for each code channel for each Orthogonal Variable Spreadin g Factor (OVSF) code.
Modulation Measureme nts Measurements 5-64 MS278XB OM The color code for the differ ent uplink channel types are listed in the followin g table. If the summary option is enabled, the channel name , th.
Measurements Modulation Measurement s MS278XB O M 5-65 To get a clearer picture of the cont ent in the display, select the CDP with Zoom graph type. A zoom of 16 code channel s will be sh own depend ing on the pos iti on of the dotted frame at the top graph.
Modulation Measureme nts Measurements 5-66 MS278XB OM The Code Domain Error graph shows the code domain error for each channel inst ead of the code domain power. Figure 5-43 and Figure 5-44 show the Code Do main Error and Code Doma in Error with Zoom for the same signal shown earlier in Figure 5-41 and Figure 5-42.
Measurements Modulation Measurement s MS278XB O M 5-67 Figure 5-44. Code Domain Error with Zoom.
Modulation Measureme nts Measurements 5-68 MS278XB OM WCDMA Uplink Code Domain Single Channel The Code Domain Single Channel measurement for Up link shows the CDP for each code channel. There are two graph type option s for this measurement: • Summary • Code Power vs.
Measurements Modulation Measurement s MS278XB O M 5-69 The summary graph is sh own in Figure 5- 46. The top ha lf of the display shows the detected data for each slot of the code channel. When th e I-button i s clicked, the d e tected data for the programmed I -channel is displayed.
Modulation Measureme nts Measurements 5-70 MS278XB OM The Code Power vs. Slot Overview graph is shown in Figure 5-47. The top half of the display sh ows the code power at each slot for the code channel. The yellow plot is the I-channel code and the green pl ot is the Q-channel code.
Measurem ents Operation Verifi cation MS278XB O M 5-71 5-6 Operation V erification This section provides procedures that you can use to verify the signal anal yzer is operating properly and meets some of its specifications.
Operation Verification Measurements 5-72 MS278XB OM Cable N(m) to N(f) Frequency: 50 MHz Impedance: 50 Ω Anritsu Model 15NNF50-1.5C Cable K(m) to K(m) Frequency Range: DC to 8 GHz Impedance: 50 Ω An.
Measurem ents Operation Verifi cation MS278XB O M 5-73 Reference Oscillator Aging Rate (Optional) The following test can be used to verify that the MS2781B 10 MHz Reference Oscill ator is within its aging specification. Th e instrument derives its frequency a ccuracy from an internal 10 MHz crystal oscillator standard.
Operation Verification Measurements 5-74 MS278XB OM T est Procedure 1. On the MS278XB, set the 10 MHz Re ference to Internal Reference. 2. On the frequency standard, cycle the menu scr een to the sixth screen (External F requency Measurement), and then pre ss the keyboard switch numbered “ 1” followed by the number 10000000 .
Measurem ents Operation Verifi cation MS278XB O M 5-75 Frequency Readout Accuracy The following test can be used to verify that the MS2781B is with in its Frequency Readout Accuracy specification s. Te s t S e t u p Connect the equipment as shown in the figure below: T est Procedure 1.
Operation Verification Measurements 5-76 MS278XB OM 9. Turn on Marker and perform Marker Peak search. Read the marker frequency an d verify that the value is within specifica tions using the formula below: ± ((marker fre q x reference accuracy) + span accuracy + (0.
Measurem ents Operation Verifi cation MS278XB O M 5-77 Frequency Sp an Accuracy The following test can be used to verify that the MS2781B is with in its Frequency Span Accuracy specification s. Te s t S e t u p Connect the equipment as shown in the figure below: T est Procedure 1.
Operation Verification Measurements 5-78 MS278XB OM 12. Use the formula below to verify whether the measured result is within specification s: 13. Repe at steps 7 through 12 for the other combinations of Span and RBW settings listed in Table 5-5. Ta b l e 5 - 5 .
Measurem ents Operation Verifi cation MS278XB O M 5-79 Swept Resolution Bandwid th The following test can be used to verify that the MS27 81B is within its Swept Reso lution Bandwidth Accuracy specification s. Te s t S e t u p Connect the equipment as shown in the figure below: T est Procedure 1.
Operation Verification Measurements 5-80 MS278XB OM 12. Repeat steps 9 through 12 for the other combinations of RBW and Sp an settings. Ta b l e 5 - 6 . Swept Resolution Bandwidth T est Frequency RBW Sp an Specification Minimum Maximum 100 MHz 10 Hz 30 Hz 9.
Measurem ents Operation Verifi cation MS278XB O M 5-81 Single Sideband Phase Noise The following test can be used to verify that the M S2781B is within its Si ngle Sideban d Phase Noise specifications. A signal source with phase noise performan ce of at least 10 dB lower than the MS2781B is required for this procedure.
Operation Verification Measurements 5-82 MS278XB OM 10. On the MS2781B, set Peak to CF an d then set Peak to Reference Level. 11. Set the MS2781B to Single Sweep mode, press the Sweep button, and then wait for the 200 sweeps to complete. 12. Turn on Marker 1 and Marker 2.
Measurem ents Operation Verifi cation MS278XB O M 5-83 26. Compute the Calculated Phase Nois e for each value in Table 5-8. 27. Return Optimize Phase No ise to the Auto setting.
Operation Verification Measurements 5-84 MS278XB OM A verage Noise Level The following test can be used to verify that the MS 27 81B is within its average noise level specificat ions. Te s t S e t u p Connect the equip ment as shown in th e figure below: T est Procedure 1.
Measurem ents Operation Verifi cation MS278XB O M 5-85 5. Press the Sweep button from the Sweep menu and allow averaging to complete. The display should look similar to that below: 6. Record the averag e displayed no ise level i n Table 5-9 an d verify that i t meets the specif ication.
Operation Verification Measurements 5-86 MS278XB OM Ta b l e 5 - 9 . A verage No ise Level T est Center Frequency Measured Result Specifications 10 MHz < –167 dBm 98 MHz < –167 dBm 499 MHz &.
Measurem ents Operation Verifi cation MS278XB O M 5-87 Frequency Response The following test can be used to ve rify th at the MS2781B is within its Frequency Respo nse specificatio ns. Te s t S e t u p Connect the equipment as shown in the figure below: T est Procedure 1.
Operation Verification Measurements 5-88 MS278XB OM 9. Adjust the MG369XB RF output so that the power meter input B re ading is –10 dBm. Record the corresponding power meter input A reading in Table 5-10. 10. Repeat steps 7 and 8 for the other frequencies listed in Tab le 5-10.
Measurem ents Operation Verifi cation MS278XB O M 5-89 Reference Level Switching Uncertainty The following test can be used to verify that the MS27 81B is within its Ref erence Level Switching Uncertainty specification s. Te s t S e t u p Connect the equipment as shown in the figure below: T est Procedure 1.
Operation Verification Measurements 5-90 MS278XB OM 10. Subtract the new reading from the marker reading at –70 d Bm Reference Level setting. 11. Verify that the devia tion is with in specifica tions. 12. Repeat steps 8 to 12 for other Referenc e Level settings li sted in Table 5-11.
Measurem ents Operation Verifi cation MS278XB O M 5-91 Resolution Bandwid th (R BW) Switching Uncertainty The following test can be used to verify that the M S2781B is wi thin its RBW Swi tching uncerta inty specification s. Te s t S e t u p Connect the equipment as shown in the figure below: T est Procedure 1.
Operation Verification Measurements 5-92 MS278XB OM 13. Record the new marker level readout value on the display to the correspondi ng ce ll in Table 5- 12. 14. Ca lculate the amplitude deviation by subtracting the new marker value f rom the 30 kHz RBW marker reading.
Measurem ents Operation Verifi cation MS278XB O M 5-93 Residual Spurious Response The following test can be used to ve rify th at the MS2781B meets Residual Spur ious Response specifications. Te s t S e t u p Connect the equipment as shown in the figure below: T est Procedure 1.
Operation Verification Measurements 5-94 MS278XB OM T able 5-13. Residual S purious Response T est Center Frequen cy (MHz) Measured Res i dual (dBm) Specifications (dBm) 10 –95 100 –95 300 –95 6.
Measurem ents Operation Verifi cation MS278XB O M 5-95 Input-related Spurious Response The following test can be used to verify that the MS2781B meets th e Input-related Spurious Response specification s. Te s t S e t u p Connect the equipment as shown in the figure below: T est Procedure 1.
Operation Verification Measurements 5-96 MS278XB OM 10. Record the max imum Spurious amplitudes in the appropriate column of Ta ble 5-14 based on the frequency offset from the carrier frequency. Note: Any spurs foun d should be verified not to or igin ate from the signal source.
MS278XB O M 6-1 Chapter 6 — Sof tware Peripherals 6-1 Introduction This chapter describes a few of the so ftware peripherals that may be used in conjunction with Signature to enhance data a nalysis an d presentati on. Thes e peripherals are centered around the advanced features of MathWorks MATLAB and the popular Micros oft Office tools.
Signature–MathWork s Connectivity (Option 40 only) Software Peripherals 6-2 MS278XB OM 2. Selecting the Target Para meters for Computation: To facilitate usage of external computational to ols, Signature provides a list of measure ment related parameters as well as acquisition data .
Software Peripherals Signature–MathW orks Conne c tivit y (O ption 4 0 only) MS278XB O M 6-3 1. Select MATLAB from the Tools d rop-down menu or the toolba r icon.
Signature–MathWork s Connectivity (Option 40 only) Software Peripherals 6-4 MS278XB OM MA TLAB Control Once the connecti on to MATLAB i s established, a Deskto p Window is launched as shown below : The Main MATLAB Interfac e has three sub-windows: • Workspace: This sh ows information ab out MATLAB variables.
Software Peripherals Signature–MathW orks Conne c tivit y (O ption 4 0 only) MS278XB O M 6-5 Advanced MA TLAB Functions MATLAB provides advanced data analysis capa bilities.
Microsoft Applicatio ns Software Peripherals 6-6 MS278XB OM 6-3 Microsof t Applications Microsoft has many popular tools that are used for generating reports.
Software Peripherals Microsoft Applications MS278XB O M 6-7 Exporting T race Data Signature a llows you to export n umerical trace data for further analysis and processing by applications such as Excel and Access .You can easily export tra ce data by d oing the foll owing: 1.
Microsoft Applicatio ns Software Peripherals 6-8 MS278XB OM 3. The data is imported into Excel as shown below: Importing the T race Data to Access 1. Open Access and create a new database.
Software Peripherals Microsoft Applications MS278XB O M 6-9 3. Navigate to the directory where yo u exported the trace data and select: Files of type: Text Files (* .txt, *.csv, *.tab, *.asc). 4. Follow the Import Tex t Wizard by choosing the Co mma Delimited format and continuing to set the remaining options to your preference.
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MS278XB O M 7-1 Chapter 7 — Remote Operation 7-1 Introduction Remote Operation is comp rise d of one of three methods: • GPIB Control • Web Services Control • Remote Desktop The primary functions of GPIB and Web Services are documented in the MS2781 B programming manual (part number: 10410-00274 ).
Remote Desktop Remote Operat ion 7-2 MS278XB OM 2. On the Remote tab, select the “Allow users t o co nnect remotely to this computer” check box, as shown below: 3. Note the analyzer’s full computer name shown in the dialog box above for use when making the remote connection.
Remote Operation Remote Desktop MS278XB O M 7-3 St arting a Remote Desktop Session Once you have enabled your analyzer to allo w remote connections and have installed the client software on a Windows-based client computer, you are ready to start a remote desktop session.
Remote Desktop Remote Operat ion 7-4 MS278XB OM Unless this was changed, you should be able to login using thi s user name and password. 6. After a successful logi n, you will see the desktop of Signature and you can remotely perform all of the tasks on the analyzer that yo u could normally perform locally.
MS278XB O M A-1 Appendix A — S pecifications Environment al Specifications The MS278XB environmental spec ifications are listed below: EMI Comp atibility The MS278XB meets the following EMI (e missi.
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Symbols MS278XB O M Index-1 Subject Index Symbols % Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36 /Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37 /Hz, in ACP Setup . . . . . . . . . . . . .
D Index-2 MS278XB OM Connecto r Pinout BNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-44 Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-46 GPIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43 Parallel Printer .
H MS278XB O M Index-3 GPIB Interface Connector . . . . . . . . . . . . . . . . . . . 3-40 Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43 Graph Type Constellation . . . . . . . . . . . . . . . . . . . . . . . . 4-21 EVM/Time . .
M Index-4 MS278XB OM Markers Active . . . . . . . . . . . . . . . . . 4-14, 4-15, 4-16, 4-17 All Off Button . . . . . . . . . . . 4-14, 4-15, 4-16, 4-17 CF = Mkr . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17 Function . . . . . . . . . .
N MS278XB O M Index-5 Modulation Capture Time . . . . . . . . . . . . . . . . . . . . . . . . 4-46 Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46 Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46 IF Bandwidth .
S Index-6 MS278XB OM Roll-off Factor, in ACP Setup . . . . . . . . . . . . . . . 4-39 Roll-off Factor, i n Multicarrier Channe l Power Setup 4-42 Roll-off Factor, Modulatio n . . . . . . . . . . . . . . . . 4-46 Root Nyquist . . . . . . . . . . . . . .
U MS278XB O M Index-7 Trace Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23 Trace Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24 Average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24 Clear-Write .
Anrit su Customer Service Centers UNITED ST A TES ANRITSU COMP ANY 490 Jarvis Drive Morgan Hill, CA 95037-2809 T elephone: 1-800-ANRITSU F AX: 408-776-1744 FRANCE ANRITSU U.S.A. 9 Ave nue du Quebec Zone de Courtaboe uf 91951 Les Ulis Cedex T elephone: 0 16-09-21-550 F AX: 016-44-61-065 JAP A N ANRITSU CUSTOMER SERVICE L TD.
Een belangrijk punt na aankoop van elk apparaat Anritsu Series MS278XB (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen Anritsu Series MS278XB heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens Anritsu Series MS278XB vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Anritsu Series MS278XB leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Anritsu Series MS278XB krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van Anritsu Series MS278XB bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Anritsu Series MS278XB kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Anritsu Series MS278XB . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
