Agilent Technologies N9340A Podręcznik Użytkownika

!"Agilent N9340A Handheld Spectrum AnalyzerUser’s Guide

1Overview4 N9340A User’s GuideFront Panel OverviewCaption Function1 Power Switch Toggles the analyzer between on and off 2 SYS Brings up a submenu for

5Key Reference94 N9340A User’s Guide•FastActivates the fast sweep mode.Fast sweep mode provides a fast measurement function that decreases the sweep t

Key Reference 5N9340A User’s Guide 95ENTERHardkey function:• Terminates data entry and enters into the analyzer numerical values keyed from numeric ke

5Key Reference96 N9340A User’s GuideESC/CLRThis hardkey selection performs two functions:Clear• Clears any numeric entry and cancels the active functi

Key Reference 5N9340A User’s Guide 97FrequencyActivates the center frequency function, and accesses the menu of frequency functions. The center freque

5Key Reference98 N9340A User’s GuideCF StepKey access: [FREQ] > {CF Step}Changes the step size for the center frequency function. Once a step size

Key Reference 5N9340A User’s Guide 99MarkerAccesses the marker control softkeys to select the type and number of markers. Markers are diamond- shaped

5Key Reference100 N9340A User’s GuideDeltaActivates a second marker at the position of the first marker. (If no marker is present, two markers appear

Key Reference 5N9340A User’s Guide 101Peak SearchPlaces a marker on the highest peak based on the setting of the Search Criteria as follows:•PeakPlace

5Key Reference102 N9340A User’s GuideMarker ToAccesses the following marker function menu keys:•To CenterSets the center frequency of the analyzer to

Key Reference 5N9340A User’s Guide 103•NoiseActivates a noise readout mode for evaluating power density.Key access: [MARKER] > {More} > {Mode}Ma

Overview 1N9340A User’s Guide 5Top Panel OverviewPCExt. Pow er 12-18 VDC 80 W MAXChar gi ngRF INPUT 50 RF OU T 50 EXT TRIG IN/EXT REF I N 50

5Key Reference104 N9340A User’s GuideMeasHardkey menu access.When in Spectrum Analysis mode, pressing [Meas] accesses the softkey menu for the power m

Key Reference 5N9340A User’s Guide 105SpanHardkey menu access.Accesses the softkey submenu of span functions. Pressing [SPAN] allows you to change th

5Key Reference106 N9340A User’s GuideTraceAccesses the trace softkeys to store and manipulate trace information. Each trace is made of a series of dat

Key Reference 5N9340A User’s Guide 107Minimum HoldMaintains the displayed minimum level for each trace point of the selected trace, and updates each t

5Key Reference108 N9340A User’s Guidea single point of trace data based on the detector mode. The interval during which data for that trace point is b

Key Reference 5N9340A User’s Guide 109•Pos PeakObtains the maximum video signal between the last display point and the present display point. This val

5Key Reference110 N9340A User’s GuideThe average is restarted when any of the following occurs:• A new average number is entered.• Any related param

Key Reference 5N9340A User’s Guide 111LimitLimit LineActivates an adjustable horizontal line that is used as a visual reference line. The limit line,

5Key Reference112 N9340A User’s GuideBeepTurns the Beep feature on or off. When on, it sounds an alarm as an indicator of a measurement limit failure.

113Agilent N9340A Handheld Spectrum AnalyzerAgilent Technologies6SCPI Command Refere

1Overview6 N9340A User’s GuideDisplay AnnotationsDescription Associated Function Key1 Time and Date [SYS] > {Setting} > {General} 2 Reference Le

6 SCPI Command Reference114 N9340A User’s GuideSCPI Language BasicsStandard Commands for Programmable Instruments (SCPI) is an ASCII- based instrument

SCPI Command Reference 6N9340A User’s Guide 115Basic Knowledge RequirementProgramming with SCPI requires knowledge of:• Computer programming languages

6 SCPI Command Reference116 N9340A User’s GuideStandard NotationsA command consists of mnemonics (keywords), parameters and punctuation. Before you st

SCPI Command Reference 6N9340A User’s Guide 117Separator• A colon “:” separates keywords of different hiberarchy.• A space separates a keyword and a p

6 SCPI Command Reference118 N9340A User’s GuideCommon CommandsThese commands are specified in IEEE Standard 488.2- 1992, IEEE Standard Codes, Formats

SCPI Command Reference 6N9340A User’s Guide 119CALCulate SubsystemThis subsystem is used to perform post- acquisition data processing. In effect, the

6 SCPI Command Reference120 N9340A User’s GuideControl Limit line Buzzer:CALCulate:LLINe[1]:BUZZer[:STATe] OFF|ON|0|1:CALCulate:LLINe[1]:BUZZer[:STA

SCPI Command Reference 6N9340A User’s Guide 121Control Limit Pattern Testing:CALCulate:LLINe[1]:PATTern[:STATe] OFF|ON|0|1:CALCulate:LLINe[1]:PATTer

6 SCPI Command Reference122 N9340A User’s GuideDefine Limit Pattern Values:CALCulate:LLINe[1]:DATA <x-axis>,<ampl>{,<x-axis>,<amp

SCPI Command Reference 6N9340A User’s Guide 123CALCulate:MARKer SubsectionMarkers All Off on All Traces:CALCulate:MARKer:AOFFThis command turns off al

Overview 1N9340A User’s Guide 7Instrument MarkingsThe CE mark shows that the product complies with all relevant European Legal Directives (If accompa

6 SCPI Command Reference124 N9340A User’s GuideMarker Function:CALCulate:MARKer[1]|2|3|4|5|6:FUNCtion FCOunt|NOISe|OFF:CALCulate:MARKer[1]|2|3|4|5|6:

SCPI Command Reference 6N9340A User’s Guide 125Marker Mode:CALCulate:MARKer[1]|2|3|4|5|6:MODE POSition|DELTa|OFF:CALCulate:MARKer[1]|2|3|4|5|6:MODE?T

6 SCPI Command Reference126 N9340A User’s GuideSet reference level to the marker value:CALCulate:MARKer[1]|2|3|4|5|6[:SET]:RLEVelThis command sets the

SCPI Command Reference 6N9340A User’s Guide 127Marker readout: X Value:CALCulate:MARKer[1]|2|3|4|5|6:X <para>:CALCulate:MARKer[1]|2|3|4|5|6:X?Th

6 SCPI Command Reference128 N9340A User’s GuideDEMOdulation SubsystemThese sub tree commands are used to control the demodulation after the measureme

SCPI Command Reference 6N9340A User’s Guide 129DISPlay SubsystemThe DISPlay subsystem controls the selection and presentation of textual, graphical, a

6 SCPI Command Reference130 N9340A User’s GuideTrace Y-Axis Re ference Level:DISPlay:WINDow:TRACe:Y[:SCALe]:RLEVel<ampl>:DISPlay:WINDow:TRACe:Y

SCPI Command Reference 6N9340A User’s Guide 131Vertical Axis Scaling:DISPlay:WINDow:TRACe:Y[:SCALe]:SPACing LINear|LOGarithmic:DISPlay:WINDow:TRACe:Y

6 SCPI Command Reference132 N9340A User’s GuideContrast:DISPlay:MODE:CONTrast<integer>:DISPlay:MODE:CONTrast?This command adjusts the contrast o

SCPI Command Reference 6N9340A User’s Guide 133INITiate SubsystemThe INITiate subsystem is used to control the initiation of the trigger. Refer to the

1Overview8 N9340A User’s Guide

6 SCPI Command Reference134 N9340A User’s GuideINSTrument SubsystemThis subsystem includes commands for querying and selecting the instrument measurem

SCPI Command Reference 6N9340A User’s Guide 135MEASure SubsystemProvides programming information for the keys associated with the measurements availab

6 SCPI Command Reference136 N9340A User’s GuideACPR SubsectionCenter Freq:MEASure:ACPR:CENTer <freq>:MEASure:ACPR:CENTer?Sets the center frequen

SCPI Command Reference 6N9340A User’s Guide 137Low Adjacent Channel Power:MEASure:ACPR:LPOWer?Returns the lower adjacent channel power of the ACPR mea

6 SCPI Command Reference138 N9340A User’s GuideChannel Power SubsectionCenter Freq:MEASure:CHPower:CENTer <freq>:MEASure:CHPower:CENTer?Sets the

SCPI Command Reference 6N9340A User’s Guide 139SENSe SubsystemSets the instrument parameters for the input signal measurements.[:SENSe]:AVERage Subsec

6 SCPI Command Reference140 N9340A User’s GuideTurn Averaging On/Off[:SENSe]:AVERage:TRACe 1|2|3|4|5|6[:STATe] OFF|ON|0|1[:SENSe]:AVERage:TRACe 1|2|3|

SCPI Command Reference 6N9340A User’s Guide 141[:SENSe]:BANDwidth SubsectionResolution Bandwidth[:SENSe]:BANDwidth|BWIDth[:RESolution] <freq>[:S

6 SCPI Command Reference142 N9340A User’s GuideVideo Bandwidth Automatic[:SENSe]:BANDwidth|BWIDth:VIDeo:AUTO OFF|ON|0|1[:SENSe]:BANDwidth|BWIDth:VIDeo

SCPI Command Reference 6N9340A User’s Guide 143[:SENSe]:DETector SubsectionAutomatic Detection Type Selected[:SENSe]:DETector:TRACe[1]|2|3|4 AUTO OFF|

9Agilent N9340A Handheld Spectrum AnalyzerAgilent Technologies2Getting StartedInformation on checking the analyzer when received, Preparation for use,

6 SCPI Command Reference144 N9340A User’s GuideTypes of Detection[:SENSe]:DETector:TRACe[1]|2|3|4 [FUNCtion] AVERage|POSitive|SAMPle| NEGative|NORMal[

SCPI Command Reference 6N9340A User’s Guide 145Center Frequency Step Size [:SENSe]:FREQuency:CENTer:STEP[:INCRement] <freq>[:SENSe]:FREQuency:CE

6 SCPI Command Reference146 N9340A User’s GuideLast Frequency Span[:SENSe]:FREQuency:SPAN:PREViousThis command sets the frequency span to the previous

SCPI Command Reference 6N9340A User’s Guide 147[:SENSe]:POWer SubsectionInput Attenuation[:SENSe]:POWer[:RF]:ATTenuation <para>[:SENSe]:POWer[:R

6 SCPI Command Reference148 N9340A User’s GuideSWEep SubsectionSweep Time[:SENSe]:SWEep:TIME <time>[:SENSe]:SWEep:TIME?This command specifies th

SCPI Command Reference 6N9340A User’s Guide 149SYSTem SubsystemThis subsystem is used to set the controls and parameters associated with the overall s

6 SCPI Command Reference150 N9340A User’s GuideTRACe SubsystemThe TRACe subsystem controls access to the internal trace memory of the analyzer.Select

SCPI Command Reference 6N9340A User’s Guide 151Tracking Generator SubsystemThe tracking generator subsystem controls the use of the tracking generator

6 SCPI Command Reference152 N9340A User’s GuideAmplitude Step:TGENerator:AMPLitude:STEP <ampt>:TGENerator:AMPLitude:STEP?This command sets the a

SCPI Command Reference 6N9340A User’s Guide 153Normalization:TGENerator:NORMalize:STATe OFF|ON|0|1:TGENerator:NORMalize:STATe?This command toggles the

1 Getting Started10 N9340A User’s GuideChecking the Shipment and Order ListCheck the shipment and order list when you receive the shipment. • Inspect

6 SCPI Command Reference154 N9340A User’s GuideReference Trace:TGENerator:NORMalize:TRACe VIEW|BLANk:TGENerator:NORMalize:TRACe?This command toggles t

SCPI Command Reference 6N9340A User’s Guide 155TRIGer SubsystemTrigger subsystem is only valid when the analyzer is in zero span.External Trigger Slop

6 SCPI Command Reference156 N9340A User’s GuideUNIT SubsystemSelects a power unit for measurement.:UNIT:POWer DBM|DBMV|DBUV|V|W:UNIT:POWer?This comman

157Agilent N9340A Handheld Spectrum AnalyzerAgilent Technologies7Error MessagesThis

7 Error Messages158 N9340A User’s GuideError Message ListNOTEA symbol [F] at the beginning of an error message indicates this is an error caused by ma

Error Messages 7N9340A User’s Guide 159–200 Execution errorThis is a generic execution error for devices that cannot detect more specific errors. The

7 Error Messages160 N9340A User’s Guide153 RF EEPROM operate failIndicates an error when writing an alignment file.152 Alignment file oversizeIndicate

161Agilent N9340A Handheld Spectrum Analyzer Agilent Technologies8Menu Map.This cha

8Menu Map162 N9340A User’s GuideAMPTDAmplitude Ref levelAttenuationAuto ManPreampOff OnScale/DIVScale TypeLog LinRef OffsetY Axis UnitdBm1 dB/DI

Menu Map 8N9340A User’s Guide 163BW/SWPBW/SWPRBWVBWVBW/RBWAvg TypeSweep TimeAuto ManSweepSingle SweepAutoLog PwrPowerVoltageReturnAuto ManAuto M

Getting Started 1N9340A User’s Guide 11Safety ConsiderationsAgilent has designed and tested the N9340A hand-held spectrum analyzer for Measurement, Co

8Menu Map164 N9340A User’s GuideFREQFreqCenter FreqCF StepAuto ManStart FreqStop Freq

Menu Map 8N9340A User’s Guide 165MARKERMarkerMarkerNormalDeltaOffPeak SearchMarker ToMorePeak Auto Search1 2 3 4 5 6Next Left PKNext Right PK1 of 2To

8Menu Map166 N9340A User’s GuideMEASMEASMeasure OffSpectrum MaskOBWACPRChannel PowerMethod%dBcCenter FreqInt BWChannel BWReturnCenter FreqAdj ChannelC

Menu Map 8N9340A User’s Guide 167SPANSPANSpanFull SpanZero SpanLast SpanDemodTrigger* The two menus enable when zero span.AMOff OnFMOff OnSpeaker

8Menu Map168 N9340A User’s GuideSYSSystemDisplayBrightnessContrastSetting Screen SaveFileGeneralExt InputTrig RefLanguageSave SetupReturnNormal LightM

Menu Map 8N9340A User’s Guide 169TRACETraceTraceClear WriteMax HoldMin HoldViewBlankMore1 2 3 4 1 of 2DetectorSave TraceAverageAutoNormalAveragePos Pe

8Menu Map170 N9340A User’s GuideLimitLimit TypeBeepSave PatternUpper LowerLimitLimit LineLimit PatternRecall PatternOff OnOff OnOff OnPoint 1Po

171AACPR, measuring, 60Adding Option, 25Amplitude, 78Attenuation, 78Average Power Measurement, 71Avg Type, 90BBattery, 16Battery, charging, 17

172Testing Pixel, 19Time Base Calibration, 38TOI Distortion, Viewing, 56Top Panel, 5Trace, 106Trace, saving a, 34Tracking Generator, 63VVBW, 8

!"www.agilent.com© Agilent Technologies, Inc. 2007-2008Printed in China May 2008*N9340-90001*N9340-90001

1 Getting Started12 N9340A User’s GuideWARNINGAlways use the three-pin AC power cord supplied with this product. Failure to ensure adequate earth grou

Getting Started 1N9340A User’s Guide 13Power RequirementsThe AC power supplied to the instrument must meet the following requirements:The AC/DC power

Notices© Agilent Technologies, Inc. 2007-2008No part of this manual may be reproduced in any form or by any means (including electronic storage and re

1 Getting Started14 N9340A User’s GuideAC Power CordsPlug Type Cable Part NumberPlug a DescriptionFor use in Country & Region8121-1703 BS 1363/A O

Getting Started 1N9340A User’s Guide 15Environmental RequirementsThe N9340A is designed for use under the follow-ing conditions:• Operating temperatur

1 Getting Started16 N9340A User’s GuideWorking with BatteriesAlways use the original battery type, as supplied with the analyzer. Installing a Battery

Getting Started 1N9340A User’s Guide 17Charging a BatteryOnly charge the battery when it is installed in the analyzer. Fully charge the battery before

1 Getting Started18 N9340A User’s GuidePowering on the Analyzer for the First TimeThe N9340A is fitted with a transflective screen, which is viewable

Getting Started 1N9340A User’s Guide 19Preparation for UseUse the [SYS] hardkey to check or access the sys-tem settings of your analyzer. Setting up y

1 Getting Started20 N9340A User’s GuideChecking Instrument Information1 Press [SYS] > {More} > {Show System} to display the system information.

Getting Started 1N9340A User’s Guide 21Making a Basic MeasurementThis section provides information on basic analyzer operations. It assumes that you a

1 Getting Started22 N9340A User’s GuideViewing a Signal on the Analyzer1 Using an RF signal generator to provide a CW signal of 1.0 GHz, at a power le

Getting Started 1N9340A User’s Guide 23Some Helpful TipsPerforming a time-base calibrationThe N9340A provides a manual calibration function to calibra

1OverviewIntroduction 2Front Panel Overview 4Top Panel Overview 5Display Annotations 6Instrument Markings 72 Getting StartedChecking th

1 Getting Started24 N9340A User’s Guide2 Press [SYS] > {More} > {Preset} > {Save User} to save the current parameters as the user preset sett

Getting Started 1N9340A User’s Guide 25Upgrading FirmwareThe N9340A allows firmware updating quickly and easily. Perform the following steps for updat

1 Getting Started26 N9340A User’s GuideContacting Agilent TechnologiesAgilent has Sales and Service Offices around the world to provide you with compl

27Agilent N9340A Handheld Spectrum AnalyzerAgilent Technologies3System SettingInformation on System Settings, File types, Saving a file, Quick save a

4System Setting28 N9340A User’s GuideVisual and Audio AdjustmentQuick Display AdjustmentThe analyzer provides you a quick adjustment for both brightne

System Setting 4N9340A User’s Guide 29System SettingIncludes general system settings, displayed language setting, and external input setting.General s

4System Setting30 N9340A User’s GuideExt InputToggles the channel for external input between Ref and Tr ig. Ref refers to an external 10 MHz referen

System Setting 4N9340A User’s Guide 31Quick saving or loading a system setupQuick saving a setupPress [SYS] > {Setting} > {Save Setup} to save

4System Setting32 N9340A User’s GuideFilePressing [SYS] > {File} accesses a menu that allows you to manage file saving and loading.File TypesEach

System Setting 4N9340A User’s Guide 33Saving PathPressing [SYS] > {File} > {File Setup} > {Save Path} allows you to select a path from one o

Reducing Input Attenuation 47Improving Frequency Resolution and Accuracy 52Making Distortion Measurements 53One-button Power Measurement 5

4System Setting34 N9340A User’s GuideQuick saving a trace or a screenPressing [ESC/CLR] > [Save] allows the user to quickly save a trace or a scree

System Setting 4N9340A User’s Guide 35Deleting a file1 Press [SYS] > {File} > {View} to select a directory.2 Press [SYS] > {File} > {File

4System Setting36 N9340A User’s GuideShow SystemDisplays the following hardware, software and battery information of your analyzer:Key Access: [SYS] &

System Setting 4N9340A User’s Guide 37Show ErrorAccesses a list of the 30 most recent error messages as reported by the analyzer. The most recent erro

4System Setting38 N9340A User’s GuidePerform a Time Base CalibrationWhen the calibration function is triggered, the current measurement is interrupted

System Setting 4N9340A User’s Guide 39Factory Default SettingsFor more information about saving a user- defined preset, refer to “Selecting a preset t

4System Setting40 N9340A User’s Guide

41Agilent N9340A Handheld Spectrum Analyzer!"4Making Measurements

4 Making Measurements42 N9340A User’s GuideMeasuring Multiple SignalsThis section provides information on measuring multiple signals.Comparing Signals

Making Measurements 4N9340A User’s Guide 436 Move the second marker to another signal peak using the front panel knob or by using the {Peak Search} s

INSTrument Subsystem 134MEASure Subsystem 135SENSe Subsystem 139SYSTem Subsystem 149TRACe Subsystem 150Tracking Generator Subsystem

4 Making Measurements44 N9340A User’s GuideResolving Signals of Equal AmplitudeIn this example a decrease in resolution bandwidth is used in combinati

Making Measurements 4N9340A User’s Guide 45Use the knob or the arrow keys to further reduce the resolution bandwidth and better resolve the signals.As

4 Making Measurements46 N9340A User’s GuideResolving Small Signals Hidden by Large SignalsThis example uses narrow resolution bandwidths to resolve t

Making Measurements 4N9340A User’s Guide 47Measuring a Low-Level SignalThis section provides information on measuring low-level signals and distinguis

4 Making Measurements48 N9340A User’s Guide5 Reduce the span to 1 MHz, and if necessary, re- center the peak.• Press [SPAN] > [1] > {MHz}.6 Set

Making Measurements 4N9340A User’s Guide 49Decreasing the Resolution BandwidthResolution bandwidth settings affect the level of internal noise without

4 Making Measurements50 N9340A User’s GuideUsing the Average Detector and Increased Sweep TimeThe analyzer’s noise floor response may mask low-level

Making Measurements 4N9340A User’s Guide 51Trace Av eragi ngAveraging is a digital process in which each sweeps trace point is averaged with the prev

4 Making Measurements52 N9340A User’s GuideImproving Frequency Resolution and AccuracyUsing the frequency counter to improve frequency resolution and

Making Measurements 4N9340A User’s Guide 53Making Distortion MeasurementsThis section provides information on measuring and identifying signal distort

4 Making Measurements54 N9340A User’s Guide3 Change the center frequency to the value of the second (400MHz) harmonic:• Press [MARKER] > {Peak Sea

Making Measurements 4N9340A User’s Guide 55Figure 14 Identifying Analyzer Distortion (O dB atten)8 Press [AMPTD] > {Attenuation} > 10 > {dB

4 Making Measurements56 N9340A User’s GuideThird-Order Intermodulation DistortionTwo- tone, third- order intermodulation (TOI) distortion is a common

Making Measurements 4N9340A User’s Guide 572 Set one source (signal generator) to 300 MHz and the other source to 301 MHz. This will define the freque

4 Making Measurements58 N9340A User’s Guide• Press [MARKER] > {Peak Search} > {Next Left (Right) Peak}.9 Measure the difference between this tes

Making Measurements 4N9340A User’s Guide 59One-button Power MeasurementThe N9340A provides one- button measurement functionality on OBW (Occupied Band

4 Making Measurements60 N9340A User’s GuideMeasuring ACPRThe adjacent channel power ratio (ACPR) measures the power ratio between the main channel pow

Making Measurements 4N9340A User’s Guide 61Measuring Channel PowerMeasures the power and power spectral density in the channel bandwidth specified. On

4 Making Measurements62 N9340A User’s GuideChannel BandwidthSets the analyzer span for the channel power measurement using the knob, the arrow keys or

Making Measurements 4N9340A User’s Guide 63Making a Stimulus Response Transmission MeasurementThe procedure below describes how to use a built- in tra

1Agilent N9340A Handheld Spectrum AnalyzerAgilent Technologies1Overview

4 Making Measurements64 N9340A User’s Guide5 Press [Sweep] > {Sweep Time (Auto)} to put the sweep time into stimulus response auto coupled mode.6

Making Measurements 4N9340A User’s Guide 65Measuring Stop Band Attenuation of a Low-pass FilterWhen measuring filter characteristics, it is useful to

4 Making Measurements66 N9340A User’s GuidePress [MEAS] > {Normalize} > {Store Ref} (1-> 4) > {Normalize (On)}8 Reconnect the DUT to the a

Making Measurements 4N9340A User’s Guide 67Making a Reflection Calibration MeasurementThe following procedure makes a reflection measurement using a c

4 Making Measurements68 N9340A User’s Guide2 Connect the tracking generator output of the analyzer to the directional bridge or coupler.3 Connect the

Making Measurements 4N9340A User’s Guide 69Figure 21 Short Circuit Normalized

4 Making Measurements70 N9340A User’s GuideMeasuring Return Loss Using the Reflection Calibration RoutineThis procedure uses the reflection calibratio

Making Measurements 4N9340A User’s Guide 71Making an Average Power MeasurementAverage power measurements provide a key metric in transmitter performan

4 Making Measurements72 N9340A User’s GuideMaking a Basic Average Power MeasurementTo make an average power measurement, connect the power sensor and

Making Measurements 4N9340A User’s Guide 73To Make a Basic Average Power MeasurementYou can follow the steps below to make a basic average power measu

1Overview2 N9340A User’s GuideIntroductionThe Agilent N9340A is a handheld spectrum analyzer with a frequency range from 100 kHz to 3 GHz, tunable to

4 Making Measurements74 N9340A User’s GuideSetting Power Meter ResolutionYou can choose from four levels of Power Meter resolution. Higher resolutions

Making Measurements 4N9340A User’s Guide 75predefined upper or lower amplitude limit.1 Press [Preset] to perform a factory preset.2 Press [Mode] >

4 Making Measurements76 N9340A User’s Guide

77Agilent N9340A Handheld Spectrum AnalyzerAgilent Technologies5Key ReferenceThis Ch

5Key Reference78 N9340A User’s GuideAmplitudeKey access: [AMPTD] Activates the reference level function and accesses the associated softkeys to set fu

Key Reference 5N9340A User’s Guide 79PreampKey access: [AMPTD] > {Preamp}Toggles the internal preamp between On and Off.Preamp results in a correct

5Key Reference80 N9340A User’s GuideRef OffsetKey access: [AMPTD] > {Ref Offset}Adds an offset value, which ranges from - 327.6 dB to +327.6 dB,

Key Reference 5N9340A User’s Guide 81MODEActivates the sofkey menus to select the measurement mode of your analyzer. The measurement modes are:• Spect

5Key Reference82 N9340A User’s GuideAmptd StepKey access: [MODE] > {Tracking Generator} > {Amptd Step}Allows you to set the step size of the pow

Key Reference 5N9340A User’s Guide 83Store reference trace before turning on Normalize(On) is displayed in the status line, however Normalize has been

Overview 1N9340A User’s Guide 3Optimized UsabilityThe Agilent N9340A handheld spectrum analyzer provides enhanced usability:• The 7.2- inch sunlight v

5Key Reference84 N9340A User’s Guidesuch as an amplifier. Now replace the thru line with the device under test, and an accurate measurement of the gai

Key Reference 5N9340A User’s Guide 85• ZeroMake a Zero operation of the power sensor.• CalibrationMake a Calibration operation of the power sen-sor.Th

5Key Reference86 N9340A User’s Guide• Disp ModeChanges the display mode between Meter and Chart. The default mode is Meter.•Chart ViewAccesses the Cha

Key Reference 5N9340A User’s Guide 87measuring range for the measurement. When auto ranging is OFF, the power sensor remains in the current range and

5Key Reference88 N9340A User’s Guide• AverageAccesses the Average submenu.• AverageEnables or disables the Averaging function.• Avg CountSets the filt

Key Reference 5N9340A User’s Guide 89BW/SWPActivates the bandwidth function and accesses the softkey menus to control resolution bandwidth, video band

5Key Reference90 N9340A User’s GuideAs the video bandwidth is decreased, the sweep time is increased to maintain amplitude calibration. A “#”mark appe

Key Reference 5N9340A User’s Guide 91PwrKey access: [BW/SWP] > {Avg Type} > {Power}Converts the scale from logarithmic to linear power units, a

5Key Reference92 N9340A User’s GuideSweep TimeKey access: [BW/SWP] Selects the sweep time for the analyzer to tune across the displayed frequency span

Key Reference 5N9340A User’s Guide 93In FFT ModeIn FFT mode, the sweep time default is auto- coupled. The submenu, sweep time, is invalid in FFT mode.