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Agilent Technologies E4406A manual Using the Markers, Measuring Band Power

Models: E4406A

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Making Measurements

Making the Spectrum (Frequency Domain) Measurement

Using the Markers

The Marker front-panel key accesses the menu to configure the markers. If you want to use the marker function in the I waveform window, press View/Trace, I and Q Waveform, Marker, Trace, I Waveform.

•Select 1 2 3 4 - Allows you to activate up to four markers with the corresponding numbers, respectively. The selected number is underlined and its function is defined by pressing the Function key. The default is 1.

•Normal - Allows you to activate the selected marker to read the frequency and amplitude of the marker position on the spectrum trace. Marker position is controlled by the RPG knob.

•Delta - Allows you to read the differences in frequencies and amplitudes between the selected marker and the next.

•Function Off - Allows you to define the selected marker function to be

Band Power, Noise, or Off. The default is Off. If set to Band Power, you need to select Delta.

•Trace Spectrum - Allows you to place the selected marker on the

Spectrum, Spectrum Avg, Spectrum Linear, Spectrum Avg Linear, I/Q Waveform, I Waveform, or Q Waveform trace. The default is Spectrum.

•Off - Allows you to turn off the selected marker.

•Shape Diamond - Allows you to access the menu to define the selected marker shape to be Diamond, Line, Square, or Cross. The default shape is Diamond.

•Marker All Off - Allows you to turn off all of the markers.

The front panel Search key performs a peak search when pressed. A marker will automatically be activated at the highest peak.

Measuring Band Power

A band power measurement using the markers calculates the average power between two adjustable markers. To make a band power measurement:

1.Press the Marker key.

2.Press Trace, Spectrum to activate a marker on the instantaneous spectrum signal.

3.Press the Spectrum Avg key to activate a marker on the average spectrum trace.

4.Press Function, Band Power.

5.Two marker lines are activated at the extreme left side of the horizontal scale. Press Normal and move marker 1 to the desired place by rotating the RPG knob.

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Chapter 4

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Agilent Technologies E4406A manual Using the Markers, Measuring Band Power

Contents

User’s Guide Agilent Technologies E4406A VSA SeriesTransmitter Tester Safety Information Warranty LIMITATION OF WARRANTYEXCLUSIVE REMEDIES Page Contents Using System FeaturesGetting Started Contents 3.Setting the Mode4. Making Measurements Contents Changing the Measurement Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Changing the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Using the Marker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Troubleshooting Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Making the Power Stat CCDF Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Measurement Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Making the Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Changing the Measurement Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Changing the View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Changing the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Using the Markers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Troubleshooting Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Service Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Timebase Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Measurement Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 50 MHz Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 Measurement Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Measurement Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Front Panel Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Troubleshooting Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Service Power vs. Time Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 Using Baseband I/Q Inputs Option B7C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 What are Baseband I/Q Inputs? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 What are Baseband I/Q Signals? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 Why Make Measurements at Baseband?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 Making Measurements with Baseband I/Q Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 Baseband I/Q Measurement Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Selecting Input Probes for Baseband Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 Selecting Baseband I/Q Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 Selecting Baseband I/Q Input Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 Setting Up Baseband I/Q Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 Baseband I/Q Measurement Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 Baseband I/Q Measurement Result ExamplesContents 5. If You Have a Problem6. Options and Accessories List of Keys List of Keys Front Panel TestList of Keys ReferenceList of Keys Getting Started Topics include Table Standard DocumentationPart Description Table Personality DocumentationMeasurement Option Part DescriptionURL for the Latest VSA Transmitter Tester Update Understanding Digital Communications MeasurementsDescription Agilent PartUpdating the Firmware Getting StartedChapter Making a Measurement Setup KeysStep Primary KeyFront Panel Keys Context Dependency SystemService GSM cdmaOne Waveform Time Domain Spectrum Freq Domain Spurious Close Channel PowerMeas View/Setup Trace MEASURESetupChannel Power SetupMarker Getting StartedService GSM cdmaOne Waveform Time Domain Spectrum Freq Domain Spurious Close Channel PowerMeas View/Setup Trace MEASURESetupFront Panel Description 2.Control keysGetting Started Front Panel Description Chapter6.Mode keys select the measurement mode and mode parameters See page 83 for more detail Getting Started Front Panel Description Chapter12.Floppy Disk Drive. The floppy disk drive accepts 1.44 megabyte disks. For an explanation of the operation of the floppy disc drive see the Using Print Keys section on page be implemented with a future firmware update Rear Panel Description Getting Started Rear Panel DescriptionChapter measurements. The external trigger accepts an 11. PARALLEL The PARALLEL connection supports remote printing Display Annotation Measurement Bar. Displays information about ESec even second clock - The green ESec Installing Optional Measurement Personalities Available Personality OptionsLoading the Optional Personality Required InformationKey Path Available Personality OptionsViewing a License Key Installing a License Key Using the Uninstall KeyPage Cables for Connecting to the Serial Port RS-232 Figure 1-5HP 24542U CableFigure 1-6HP F1047-80002Cable Cables for Connecting to the Serial Port RS-232 Figure 1-7HP 24542G/H CableFigure HP 92219J CableCables for Connecting to the Serial Port RS-232 Figure 1-10HP 24542M Modem CableFigure 1-11HP C2913A/C2914A Cable Figure 1-12Mouse Adapter typicalCables for Connecting to the Serial Port RS-232 Figure 1-13HP 24542U Cable with 5181-6641AdapterFigure 1-14HP 24542U Cable with 5181-6640Adapter Figure 1-15HP 24542U Cable with 5181-6642AdapterFigure 1-16HP 24542U Cable with 5181-6639Adapter Figure 1-19HP F1047-80002Cable with 5181-6642Adapter Safety Considerations Instrument InstallationInstrument Operation and Maintenance Safety Considerations for Service Personnel Getting Started Safety Considerations ChapterUsing System Features Using System Keys Install and UninstallKey Locations Key Access LocationsTable Using System Features Key LocationsChapter Key Access Locations TableUsing System Features Key Access PathKey Access Locations Using System Features Key LocationsKey Access Path TableKey Access Locations Using System Features Key LocationsKey Access Path TableKey Access Locations Using System FeaturesKey Access Path TableKey Access Locations Using System FeaturesKey Access Path Key LocationsUsing System Features Key LocationsInput/Input Port ChapterUsing System Features Key Locations ChapterKey Access Locations Using System FeaturesKey Access Path Key LocationsUsing Print and Print Setup Functions Printing a Displayed Screenlanguage default to when Color Print is set toFront Panel Key LevelUsing System Features Using Print and Print Setup FunctionsChapter selected the six screen filesshown below are available only whenUsing File and Save Keys Loading a StateSaving a State Using the Alpha Editor Keys LevelLevel LevelUsing Input/Output Configuration Keys Configuring I/O•SCPI LAN - Accesses the following keys File System ReferenceFront Panel Level•10 MHz Out - Activates, or deactivates, the 10 MHz out signal on the rear panel of the instrument. The 10 MHz out can be used to lock other test equipment to the same frequency reference that is used by the transmitter tester. Once activated, the 10 MHz out feature is persistent, so if it is set to On it will remain on, even if the instrument has been preset, or powered off and then on Using System Configuration and Alignment Keys Restore System DefaultsShow Errors features are described in the service guide Show SystemUsing System Features Using System Configuration and Alignment KeysShow System Displays ChapterSystem Local Using System FeaturesUsing System Configuration and Alignment Keys ChapterAlignment FrontLevel Levelremains constant Using System Features Using System Configuration and Alignment KeysChapter Using System Features Using System Configuration and Alignment KeysChapter Setting the Mode Selecting a Mode Setting the Mode Selecting a ModeChapter Mode Setup Input KeysAdjust Input Attenuation and Input Power Adjust the IF Align SignalTrigger Keys •RF Burst Wideband •Video IF EnvlpSelecting the Frequency/Channel •Sync Source key menu4 Making Measurements Basic Measurements Initial Setup Using Measure KeysPreparing for Measurements Measurement Setup Measurement ControlAveraging Voltage Avg - The voltage is averaged Trigger Source Changing the View •Typical Measurement Windows•Trace Display Span / X Scale Keys•Amplitude / Y Scale Keys Using Markers TraceMarkers Marker Functions Search MarkerMaking the Spectrum Frequency Domain Measurement PurposeMeasurement Method Making the MeasurementResults Changing the Measurement Setup Spectrum Frequency Domain Measurement DefaultsTable Making Measurementsmeasurement data Auto Auto Peak - Select this to set the ADC range automatically to the peak signal level. Auto peak is a compromise that works well for both CW and burst signals Changing the View Making MeasurementsMaking the Spectrum Frequency Domain Measurement ChapterFigure 4-4Spectrum Measurement - I/Q Polar View Changing the Display Changing the Linear Spectrum DisplayChanging the I or Q Waveform Window Changing the I/Q Polar Window Selecting Displayed Traces Within WindowsMaking Measurements Making the Spectrum Frequency Domain MeasurementUsing the Markers Measuring Band PowerTroubleshooting Hints Making MeasurementsMaking the Spectrum Frequency Domain Measurement ChapterMaking the Waveform Time Domain Measurement PurposeMeasurement Method Making the MeasurementInput signal: cdma2000 Rev 8, SR1, 9 Channel ResultsMaking Measurements Making the Waveform Time Domain MeasurementChapter Changing the Measurement Setup Waveform Time Domain Measurement DefaultsTable In addition, the following parameters can be modified Making Measurements Making the Waveform Time Domain MeasurementChapter Changing the View Meas Setup: View/Trace = I/Q Waveform View Changing the Display Figure 4-9Waveform Measurement - I/Q Polar ViewMaking Measurements Making the Waveform Time Domain MeasurementChapter Using the Markers •Off - Allows you to turn off the selected markerTroubleshooting Hints differing values for the maximum pointMaking the Adjacent Channel Power ACP Measurement Making the Adjacent Channel Power ACP MeasurementPurpose Measurement MethodACP Setup Recommendation Making the MeasurementResults TableChanging the Measurement Setup Adjacent Channel Power Measurement DefaultsMaking the Adjacent Channel Power ACP Measurement Figure 4-10ACP Measurement - Bar Graph ViewMaking the Adjacent Channel Power ACP Measurement Making MeasurementsMaximum ChapterOffset A 750.000 kHz Offset B 1.98000 MHz Chapter Changing the View •Limit Test - Turns off the limit test functionMaking the Adjacent Channel Power ACP Measurement Figure 4-11ACP Measurement - Spectrum ViewMaking Measurements ChapterTroubleshooting Hints This adjacent channel power ratio measurement can reveal degraded or defective parts in the transmitter section of the UUT. The following examples are those areas to be checked furtherMaking the Channel Power Measurement Making the Channel Power MeasurementPurpose Measurement MethodChannel Power Measurement Making the MeasurementResults FigureChanging the Measurement Setup Channel Power Measurement DefaultsTable Page Using the Marker Troubleshooting HintsChanging the Display Making the Power Stat CCDF Measurement PurposeMeasurement Method Power Statistics CCDF Measurement Making the MeasurementResults FigureChanging the Measurement Setup Power Statistics CCDF Measurement DefaultsTable Making the Power Stat CCDF Measurement Changing the ViewChanging the Display Making MeasurementsUsing the Markers Troubleshooting Hints•Off - Allows you to turn off the selected marker Service Measurements Front Panel Test on page Pwr vs Time on pageTest Setup Timebase FrequencyPurpose Measurement MethodWindow Three Freq Error ResultsWindow One Time Record Window Two Magnitude50 MHz Amplitude Test SetupPurpose Measurement MethodWindow Three Error ResultsWindow One RF Magnitude Window Two Cal MagnitudeSensors Test SetupPurpose Measurement MethodMaking Measurements Sensors ChapterFront Panel Test Test SetupPurpose Troubleshooting Hints ResultsMaking Measurements Front Panel Test ChapterService Power vs. Time Measurement Service Power vs. Time MeasurementPurpose Making MeasurementsUsing Baseband I/Q Inputs Option B7C What are Baseband I/Q Inputs? What are Baseband I/Q Signals? Why Make Measurements at Baseband?Making Measurements with Baseband I/Q Inputs Baseband I/Q Measurement Overview Using Baseband I/Q Inputs Option B7CMaking Measurements ChapterSelecting Input Probes for Baseband Measurements Using Baseband I/Q Inputs Option B7C Making MeasurementsChapter Table Agilent Probes - Balanced and UnbalancedSelecting Baseband I/Q Input Connectors Selecting Baseband I/Q Inputs•IF Align - Select to view the IF alignment signal. This signal is available as a diagnostic function, to check the operation of the alignment signal in the case of alignment failure. Once selected, a menu accessing the IF alignment signal parameters is available at the bottom of the Input menu. Either CW, comb, or pulse signals may be selected. Because the alignment signal is input at the IF frequency, it is displayed on any active Spectrum Freq Domain window, regardless of center frequency Setting Up Baseband I/Q Inputs I/Q Range Settings by Displayed Unit of MeasureTable Table I and Q Offset Increment vs. I/Q RangeI and Q I/Q RangeUsing Baseband I/Q Inputs Option B7C Making MeasurementsChapter Selecting Baseband I/Q Input Impedance Baseband I/Q Measurement Views Spectrum Views and 0 Hz Center FrequencyWaveform Views for Baseband I/Q Inputs Comparing RF and Baseband I/Q Measurement Views TableRF vs. Baseband I/Q Input Measurement Views, by MeasurementBaseband I/Q Measurement Result Examples Channel Power MeasurementUsing Baseband I/Q Inputs Option B7C Spectrum Frequency Domain MeasurementMaking Measurements ChapterFigure 4-19Basic Mode Spectrum Linear View- Baseband I/Q Inputs Waveform Time Domain Measurement Baseband I/Q Key Access Locations Baseband I/Q Key Access LocationsTable Baseband I/Q Key Access Locations Using Baseband I/Q Inputs Option B7CTable Making MeasurementsBbIQ Programming Commands CALCulate SubsystemBaseband I/Q - Spectrum I/Q Marker Query Baseband I/Q - Waveform I/Q Marker QueryBaseband I/Q - IQ Offset Calibration DISPlay Subsystem Spectrum - Y-AxisScale/DivSets the amplitude reference level for the y-axis Spectrum - Y-AxisReference LevelINPut Subsystem Baseband I/Q - Select Input ImpedanceBaseband I/Q - Select Input Impedance Reference Baseband I/Q - Activate IQ AlignmentMEASure Subsystem SENSe Subsystem Select the Input Signal Baseband I/Q - Select I/Q Power RangeBaseband I/Q - Select I/Q Voltage Range 5 If You Have a Problem Instrument Messages and Functional Tests documentProblem Symptoms and Solutions Key or Feature Does Not Appear in MenuLAN External Loopback Test Failed - Error Message Instrument Fails Alignment - Error MessageIf You Have a Problem Problem Symptoms and SolutionsInstrument Power-OnProblem LAN Communication ProblemInstrument Keyboard is Locked Support, Services, and Assistance Agilent Technologies Test and MeasurementChapter Returning Your Instrument to Agilent Technologies Table 5-1Contacting AgilentAsia Call Center Numbers Options and Accessories Options and Measurement Personalities Option BAH: GSM Measurement PersonalityOption BAC: cdmaOne Measurement Personality Option BAE: NADC/PDC Measurement PersonalitiesOption HN1: iDEN Measurement Personality Option BAF W-CDMAMeasurement PersonalityOption B78: cdma2000 Measurement Personality Option B7C: Baseband IQ Measurement Personality Option 202: EDGE with GSM Measurement PersonalityOption 300: 321.4 MHz IF Output Option 0B1: Additional Copy of ManualsOption 0BV: Component-levelService Documentation Option 0BW: Assembly-levelService DocumentationOption 1CM Rack Mount Kit Option 1CN Handles KitAccessories Broadband Preamplifiers and Power AmplifiersAC Probe GPIB CableN2714A Calibration and Adjustment Software RS-232CablesModel Number DescriptionIndex IndexNumerics Index IndexIndex Indexoff, 140 select, 140 shape, 140 trace, Index stateIndex Index Index