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UNI-T UTS1000 Series, Руководство по эксплуатации

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3.1.3 FREQ

FREQ

Center frequency

Start frequency

Stop frequency

Frequency stepping

Auto Manual

Frequency offset

Frequency reference

Internal External

3.1.4 MARKER

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5

1

2

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5

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NdB

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MARKER

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Frequency marker

Trace

Normal

Difference

Off

Next page

Function off

On Off

On Off

On Off

Frequency

marker noise

Frequency
counting

Back

Frequency
counting

On Off

Resolution
bandwidth

Back

All off

Frequency marker list

Frequency marker
functions

Frequency
marker

Back

Center frequency

Frequency marker

Frequency marker

Frequency stepping

Frequency marker

Start frequency
Frequency marker

Stop frequency

Frequency marker

Reference level

Next page

Frequency marker

Frequency marker

Center frequency

Back

Span

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14

Содержание UTS1000 Series

Страница 1: ......

Страница 2: ...el 6 2 3 Preparations before Use 7 2 4 User Interface 9 2 5 Parameter Input 10 2 6 Basic Measurement 11 3 Descriptions of Menu 12 3 1 Menu Maps 12 3 2 Brief of Menu 24 3 3 Descriptions of Menu 34 4 Measurement Application 61 4 1 Measurement of Continuous wave Signal 61 4 2 Measurement of Signals with Close Resolution Bandwidth and Resolution Range 62 4 3 Measurement of Signal Frequency by Frequenc...

Страница 3: ... by Pre amplifier 71 4 9 Measurement of Harmonic Distortion 71 4 10 Measurement of Third order Intercept Distortion 73 4 11 Measurement of AM Modulation Signal 74 5 Remote Control 75 5 1 By USB 75 5 2 By LAN 76 6 Troubleshooting and Repairing 76 6 1 Troubleshooting 76 6 2 Repairing of Spectrum Analyzer 78 7 Performance Parameters 79 8 Appendix Maintenance and Cleaning 85 876 23 5 7 1 0 18 ...

Страница 4: ...desk type spectrum analyzer it is of technical parameters better than mainstream portable spectrum analyzer suitable Main characteristics of product for tests conducted indoors outdoors and in other conditions This product is able to display testing images by remote control through PC after connecting to PC Adopt general USB LAN communication interface convenient for your measuring and using adopt...

Страница 5: ...position ways 1 2 Safety Precautions before use 1 2 1 Check Power Handheld spectrum analyzer has two power supply modes i e supplied by power adapter and internal battery The input of power adapter adopts power cord interface in line with international safety standards If power of instrument is supplied by power adapter ground wire of AC power shall be reliably grounded Before start up make sure t...

Страница 6: ...rotection is always neglected by users The damage to instrument usually doesn t appear immediately but such damage would greatly reduce reliability of instrument Therefore if possible adopt static protection measures and adopt proper static protection measures in daily work Warning Before power on and start up of spectrum analyzer a please firstly check whether voltage of power is normal to avoid ...

Страница 7: ... Spectrum Analyzer can t store power during transportation so such battery must be charged before first time use Battery can be charged while Before use please firstly confirm voltage of AC power has satisfied the requirement for input voltage of power adapter to avoid damage of equipment Before putting AC plug into instrument adapter please firstly confirm power adapter is qualified or instrument...

Страница 8: ...nt mark socket is displayed in the upper left of display screen when battery supplies power to instrument mark battery is displayed in corresponding position 2 Quick start Guides This chapter introduces spectrum analyzer s front panel side panel and user interface notes for first time use and its usage demonstrated by one measurement example 2 1 Front Panel Figure 2 1 View of Front Panel 5 ...

Страница 9: ...Set reference level RF attenuator pre amplification scale unit and other parameters Set spectrum analyzer s resolution bandwidth video bandwidth trace average sweep time and other parameters Set trace wave detection mode max hold min hold and other parameters of swept signal Full band auto search positioning signal Set tracking source demodulation trigger Pass Fail and other functions Advanced mea...

Страница 10: ...2 3 Battery UTS1000 Series Spectrum Analyzer adopts rechargeable battery Battery output voltage range is 7V 9V battery is 6000mAh large capacity lithium battery 2 2 4 Trigger Input External trigger signal is input to spectrum analyzer s trigger port through BNC interface product port is marked as TRIG IN 2 2 5 Reference Clock Input Output When set internal reference output 10MHz reference clock fr...

Страница 11: ...battery provided as accessory to spectrum analyzer at battery installing removing chamber Please refer to descriptions specified in Section Side Panel for battery and battery installing removing chamber 2 3 4 Start up After connecting with power adapter or installing battery press Power On key on the front panel to open spectrum analyzer and you will know start up initialization process informatio...

Страница 12: ...ion modes of spectrum curve Video bandwidth Display values of video bandwidth Resolution bandwidth Display values of resolution bandwidth Spectrum curve Display normal curve after start up of spectrum analyzer Sweep time Display sweep time of sweep frequency Span Display value of span in current state Center frequency Display values of center frequency Scale Display scale values marked Reference l...

Страница 13: ...1 When parameters are under editable state rotate knob to increase clockwise or decrease counterclockwise values of parameters in specific stepping 2 When editing file names knob is used to select different characters on the soft keyboard 3 Realize some simple auxiliary functions during measurement Number keyboard are composed of following parts 1 Number keys 0 9 number keys are used to directly i...

Страница 14: ...s of center frequency appear in the upper left of the screen grid indicating center frequency function has been activated Values of center frequency can be changed by using number keyboard knob or direction keys Press number keys to input 300MHz and spectrum analyzer s center frequency is set as 300MHz Ƽ Set span PressǏSPANǐ key span menu appears at the bottom of screen Span soft menu is highlight...

Страница 15: ...surement of UTS1000 Series Spectrum Analyzer are shown as Figure 2 6 Figure 2 6 View of Measured Signal 3 Descriptions of Menu This chapter provides function maps of keys on the panel of spectrum analyzer and elaborately defines meanings of every menu 3 1 Menu Maps This chapter provides function maps of relevant menu keys on the panel of spectrum analyzer in alphabetical order Please refer to next...

Страница 16: ...age Reference offset Reference unit Back Back 3 1 2 BW SWP BW SWP 9kHz 30kHz 120kHz 䖨ಲ 1MHz Resolution bandwidth Auto Manual Resolution stepping Default Continuous Video bandwidth Auto Manual Trace average On Off Sweep time Auto Manual Next page Swept point Single sweep Continuous sweep EMI bandwidth Back Back EMI bandwidth EMI bandwidth On Off 876 23 5 7 1 0 18 13 ...

Страница 17: ...unction off On Off On Off On Off Frequency marker noise Frequency counting Back Frequency counting On Off Resolution bandwidth Back All off Frequency marker list Frequency marker functions Frequency marker Back Center frequency Frequency marker Frequency marker Frequency stepping Frequency marker Start frequency Frequency marker Stop frequency Frequency marker Reference level Next page Frequency m...

Страница 18: ...hannels The number of adjacent channel Occupied power Back 3 1 6 MODE AM FM MODE Tracking source Demodulation Trigger Pass Fail Frequency discrimination test Audio demodulation Digital demodulation Back Back Tracking source On Off On Off Output power Network measurement Network measurement Auto Video External Back Output power Reference level Normalization Back 876 23 5 7 1 0 18 15 ...

Страница 19: ...width Auto Manual Auto Manual Back On Off Carrier frequency Demodulation bandwidth Back External 1 2 4 0 5 0 25 Frequency discrimination test Frequency discrimination test On Off Calibration Amplitude Sweep time Back Output power Input gain Scale DC offset Back Back 876 23 5 7 1 0 18 16 ...

Страница 20: ... demodulation Audio demodulation On Off Demodulation modes Sound volume Radio station Radio station 1 Radio station 2 Radio station 3 Radio station 4 Radio station 5 Pass Fail Window measurement Region measurement Back 876 23 5 7 1 0 18 17 ...

Страница 21: ...y Upper limit line Lower limit line Start frequency Stop frequency Upper limit line Lower limit line Edit Back Back Back Frequency offset Amplitude offset Edit of upper line Edit of lower line Front page Page up Page down End page Operation Add Delete Empty Frequency Amplitude Back Back Front page Page up Page down End page Operation Add Delete Empty Frequency Amplitude Back 876 23 5 7 1 0 18 18 ...

Страница 22: ...1 7 PEAK ė PEAK Max value search Next peak Left peak Right peak Frequency marker Center frequency Next page Min value search Peak search Back 3 1 8 SPAN SPAN Span Full span Zero span Previous span 876 23 5 7 1 0 18 ...

Страница 23: ...page Next page Chinese English Back System information System log Back File Save Print Display Backlight adjustment IP address Subnet mask Gateway Reset network Back Date setting Time setting Back User calibration System service Back Start to calibrate Reset to factory defaults 876 23 5 7 1 0 18 ...

Страница 24: ...art up parameters Reset parameters Back Back Factory User Power off Back Factory User Power off A4 A3 B5 C5 Print Paper size Direction Lateral Longitudinal Copies Print curve Print screen Back Letter Back 876 23 5 7 1 0 18 ...

Страница 25: ...us page Next page End page Back Sort Delete Export Import Back By name By time By size Back Select This page All Back Delete selection Delete this page Delete all Back Save Screen capture Trace data User state Back Back Save to local Save to flash drive Back Save to local Save to flash drive 876 23 5 7 1 0 18 ...

Страница 26: ...itude ruler Display style Back Default Back 3 1 10 TRACE 1 2 3 4 5 1 ĕė 2 2 DLė 2 2 ĕė 3 1 ė 3 2 ė 3 TRACE Trace Refresh Max hold Min hold Blanking Next page Back View Trace operation Wave detection mode Back Auto Normal Positive peak Negative peak Sampling Back 876 23 5 7 1 0 18 ...

Страница 27: ...ference unitź ǏAMPǐ Soft menu for the unit setting of amplitude pops up dBm Reference uniWź Select dB relative to 1mW as unit of amplitude dBμW Reference uniWź Select dB relative to 1μW as unit of amplitude dBpW Reference uniWź Select dB relative to 1pW as unit of amplitude dBmV Reference uniWź Select dB relative to 1mV as unit of amplitude dBμV Reference uniWź Select dB relative to 1μV as unit of...

Страница 28: ... of frequency functions pops up Center frequency ǏFREQǐ Activate center frequency function set spectrum analyzer in center frequency span mode Start frequency ǏFREQǐ Activate start frequency set spectrum analyzer in start stop mode Stop frequency ǏFREQǐ Activate stop frequency set spectrum analyzer in start stop mode Frequency stepping Auto Manual ǏFREQǐ Adjust stepping of center frequency so as t...

Страница 29: ... marker is normalized as noise power with 1Hz bandwidth Frequency countinJź Frequency marker functioQź Soft menu of frequency counting function pops up Frequency countinJź On Off Frequency countinJź Open or close frequency counter activate a frequency marker When such counter is open display counting results Resolution bandwidth Frequency countinJź Set counting resolution Frequency markerĺ ź ǏMARK...

Страница 30: ...frequencies of main channel and adjacent channel The number of adjacent channel Measurement setuSź Set the number of upper adjacent channels and lower adjacent channels for adjacent channel power measurement Occupied power Measurement setuSź Calculate power of occupied bandwidth between two frequency markers ǏMODEǐ Soft menu of other measurement functions Tracking sourcHź ǏMODEǐ Soft menu related ...

Страница 31: ...isable audio demodulation Demodulation modeVź Audio demodulatioQź Soft menu of demodulation mode pops up FMW Demodulation modeVź Set demodulation mode as broadband FM demodulation FM Demodulation modeVź Set demodulation mode as FM demodulation AM Demodulation modeVź Set demodulation mode as AM demodulation USB Demodulation modeVź Set demodulation mode as upper sideband demodulation LSB Demodulatio...

Страница 32: ...disable frequency line Window sweep On Off Window measuremenWź Enable or disable window sweep Amplitude frequ encyź Window measurementź Positions of control line of amplitude andfrequency pops up Upper limit line Amplitude freq uencyź Set position of upper limit line Lower limit line Amplitude freq uencyź Set position of lower limit line Start frequency Amplitude freq uencyź Set position of start ...

Страница 33: ...etting of span pops up Span ǏSPANǐ Activate frequency span function set spectrum analyzer in center frequency span mode Full span ǏSPANǐ Set spectrum analyzer s span value as maximum value Zero span ǏSPANǐ Set span as 0Hz this function displays input signal in amplitude time mode so it is very helpful to observe modulated signal Previous span ǏSPANǐ Set spectrum analyzer s span value as previous s...

Страница 34: ...interface End page Directoryź Set current interface displayed as end page of directory File typesź Fileź Open soft menu of file types easy for optional view Screen picture File typesź Only files in screen picture format can be viewed Table 3 1 Descriptions of Basic Functions continued Function key Access key Descriptions Trace data File typesź Only files in trace data format can be viewed All File...

Страница 35: ... Set printout by A3 paper B5 Papersizeź Set printout by B5 paper 876 23 5 7 1 0 18 C5 Papersizeź Set printout by C5 paper Letter Papersizeź Set printout by letter Direction Lateral Longitudinal Printź Set print direction default to lateral Copies Printź Set copies printed Print curve Printź Only graphs are printed Print screen Printź All information on the screen is printed Displayź ǏSYSǐ Soft men...

Страница 36: ... 2 DLĺ 2 Trace operationź Subtract value of display line from track register 2 and then put the result back to track register 2 2 ĸĺ 3 Trace operationź Get contents in track register 2 and track register 3 exchanged and then set track 2 and track 3 in display mode at the same time 1 ĺ 3 Trace operationź Get contents in track register 1 transferred to track register 3 and then set track 3 in displa...

Страница 37: ...d Ɣ 7he adjustment of center frequency is equivalent to parallel movement of current channel adjustable range is limited by frequency range given by parameters Ɣ n zero span mode values of start frequency stop frequency and center frequency are same and they will be revised together Ɣ You can use number keys knob and direction keys to revise this parameter Activate center frequency and set spectru...

Страница 38: ... to stop frequency 3 3 1 4 Frequency stepping Auto Manual Adjust stepping of center frequency Revise center frequency by fixed stepping so as to continuously switch measured channel Notes Ɣ There are two modes for the setting of frequency stepping manual and auto When frequency stepping is in auto mode frequency stepping is 1 10 of span in case of non zero span stepping equals to 25 of RBW in case...

Страница 39: ...requency input mode is switched as center frequency span Notes Ɣ If span is changed spectrum analyzer s start frequency and stop frequency would automatically change Ɣ When set span manually it can be minimally set as 0Hz i e in zero span mode please refer to specification descriptions provided in Performance parameters for maximum set value When span is set as maximum value spectrum analyzer ente...

Страница 40: ... affected by max mixing level input attenuation and pre amplifier When adjust reference level adjust attenuation always on the condition that max mixing level keeps unchanged so as to satisfy inequality Set parameters related with amplitude of spectrum analyzer By adjusting these parameters measured signal can be displayed in current window in a certain manner which is easy for observation and is ...

Страница 41: ...level z When reference level changes attenuation can automatically make adjustment but the change of attenuation will not affect reference level z You can use number keys knob and direction keys to revise this parameter The purpose of adjustment of attenuator is to make max signal amplitude of input mixer lower than or equal to 10dBm For example if reference level is 12dBm attenuation is 22dB so i...

Страница 42: ...nce between two frequency markers Notes Adjust amplitude range currently can be displayed by setting different scale Signal amplitude range currently can be displayed 10 current scale to reference level You can use number keys knob and direction keys to revise this parameter 3 3 3 5 Scale types Linear Logarithmic Select scale in vertical axis displayed in linear or logarithmic mode it defaults to ...

Страница 43: ...it of amplitude 2 dBμW Select dB relative to 1μW as unit of amplitude 3 dBpW Select dB relative to 1pW as unit of amplitude 4 dBmV Select dB relative to 1mV as unit of amplitude 5 dBμV Select dB relative to 1ȝV as unit of amplitude 6 W Select watt as displayed unit of amplitude 7 V Select volt as displayed unit of amplitude 3 3 4 ǏBW SWPǐ Set spectrum analyzer s resolution bandwidth video bandwidt...

Страница 44: ...on bandwidth and video bandwidth If resolution bandwidth is in auto mode it would become smaller with smaller span non zero span 3 3 4 4 Trace average On Off Enable or disable trace average function Trace average is able to smoothly display trace no need of narrow video bandwidth This function sets wave detector in sampling mode meanwhile it continues to everage and smooth the trace 3 3 4 5 Sweep ...

Страница 45: ...eters Therefore system will execute sweep and measurement again You can use number keys knob and direction keys to change parameters 3 3 4 7 Single sweep Set sweep as signal sweep 3 3 4 8 Continuous sweep Set sweep as continuous sweep 3 3 4 9 EMI bandwidtKź Soft menu concerning EMI bandwidth measurement pops up 3 3 4 10 EMI bandwidth On Off 3 3 4 11 EMI bandwidthź Bandwidth parameters for EMI band...

Страница 46: ...this mode trace can continuously receive sweep data and select positive peak wave detection mode 3 3 6 4 Min hold Display min response of input signal held in trace In this 3 3 6 5 Blanking Clear traces on the screen away However contents stored in trace register keep unchanged not refreshed mode trace can continuously receive sweep data and select negative peak wave detection mode 3 3 6 6 View Di...

Страница 47: ...ection modes according to actual application so as to ensure the accuracy of measurement Optional wave detection modes positive peak value negative peak value sampling value Selected wave detection modes are correspondingly displayed in parameter icons in status bar on the left of screen Table 3 2 Comparison of wave detection modes Auto Combination of normal wave detection and positive peak wave d...

Страница 48: ...lue in sampling data 3 3 6 18 Sampling Set wave detector in sampling wave detection mode This mode is usually used in video average and noise frequency marker functions 3 3 7ǏMEASǐ Provide various advanced measurement functions including time spectrum adjacent channel power channel bandwidth and occupied bandwidth In this mode when noise is detected positive peak value and negative peak value are ...

Страница 49: ...d bandwidth measurement pops up Occupiedbandwidth is used to measure bandwidth occupied by signal of transmitter It can be measured by the ratio of in band power to total power within frequency span default to 99 this valuecan be set by user 3 3 8 ǏMODEǐ Provide other measurement functions including tracking source signal source frequency discrimination properties demodulation trigger and Pass Fai...

Страница 50: ...yed measurement result is spectrum measurement result unit dBm Normalization soft menu and a straight line is displayed in 0dB scale on the display 3 3 8 9 Frequency discrimination testź Open soft menu for the setting of frequency discrimination test 3 3 8 10 Frequency discrimination On Off Enable or disable frequency discrimination test function 3 3 8 11 Calibration It is used to calibrate test s...

Страница 51: ...ion 3 3 8 16 DC offset Under DC offset menu set DC offset to move measured Sparameter wave form up or down easy for user s measurement 3 3 8 17 Sweep time Sweep time menu change time for the sweep of 601 points ByǏPEAKǐon the panel of instrument max peak and center frequency of wave form can be automaticallydisplayed 3 3 8 18 Demodulation ź Enter demodulation setting This spectrum analyzer support...

Страница 52: ...h in auto or manual mode 3 3 8 29 FM demodulation ź Soft menu related with FM demodulation pops up 3 3 8 30 FM On Off Enable or disable FM demodulation 3 3 8 31 Carrier frequency Set carrier frequency of FM demodulation signal 3 3 8 32 Demodulation bandwidth Auto Manual Set demodulation bandwidth in auto or manual mode 3 3 8 33 Trigger ź Soft menu for the setting of trigger function pops up 3 3 8 ...

Страница 53: ...able or disable frequency line This frequency line defaults to on when window measurement is on 3 3 8 44 Window sweep On Off Enable or disable window sweep When window sweep is on only sweep within window formed by the intersection of amplitude line and frequency line periphery is not swept when window sweep is off sweep in full frequency range 3 3 8 45 Amplitude frequenc ź It is used to sweep and...

Страница 54: ... to edit control line above trace according to specific condition of trace 3 3 8 54 Edit of lower lineź Edit of lower line is used to edit control line above trace according to specific condition of trace 3 3 9 ǏMARKERǐ Frequency marker is a diamond marker used to mark points on trace Amplitude frequency or sweep time point of points on trace can be read out by marker Notes 5 pairs of markers at m...

Страница 55: ...trace After selecting Normal frequency marker marker identified by 3 3 9 4 Difference One of types of marker used to measure the difference between reference point and certain point on trace X frequency or time or Y amplitude value After selecting Frequency marker difference a pair of markers appears on the trace reference marker and difference marker the difference of amplitude and frequency betw...

Страница 56: ... define certain point as reference point a Open a normal marker get it positioned at one point and then switch marker type as difference By this way such point becomes reference point Difference measurement can be realized by changing position of difference point 3 3 9 5 Off Close currently open marker and disable its related functions Frequency marker is not displayed any longer 3 3 9 6 All off C...

Страница 57: ...hange the value of N the value of N defaults to 3 3 3 9 11 Frequency marker noise On Off Enable or disable frequency marker noise function As for selected marker perform function of marking function and then read noise power density When it is on average noise level read from frequency marker is noise power normalized as 1Hz bandwidth 3 3 9 12 Frequency countingź Enter soft menu of frequency count...

Страница 58: ...urrent marker Notes If normal marker is selected center frequency stepping is set as frequency at marker 3 3 9 18 Frequency markerĺstart frequency Set spectrum analyzer s start frequency according to frequency at current marker Notes If normal marker is selected start frequency is set as frequency at marker If frequency marker difference marker is selected start frequency is set as frequency at di...

Страница 59: ...eak search function Notes If max value is selected from peak search options find max value on trace and mark it by marker The search of next peak right peak and left peak must satisfy search parameter conditions Pseudo signal generated by local oscillation feed through at zero frequency shall not be as peak it shall be neglected 3 3 10 1 Max value search Place a frequency marker at the peak of tra...

Страница 60: ...ed if this function is on 3 3 11 ǏSYSǐ and peak threshold Operations related with system system information language date and time network start up reset file save print display backlight adjustment user calibration and system service 3 3 11 1 System informationź View system information or latest messages 3 3 11 2 System information System information includes following information serial number e...

Страница 61: ...ress Set gateway s IP address 3 3 11 10 Subnet mask Set parameters of subnet mask 3 3 11 11 Gateway Set parameters of gateway address 3 3 11 12 Reset network Set reset network 3 3 11 13 Start up Resetź Soft menu for the setting of start up parameters or reset parameters of spectrum analyzer pops up 3 3 11 14 Start up parameter ź The setting of start up parameters includes factory user and power of...

Страница 62: ...layed in picture format in current interface of spectrum analyzer 3 3 11 20 Refresh Refresh file catalogue 3 3 11 21 Saveź Execute operation of saving files Notes When save files select file types as required including screen capture or trace data Similarly file storage location can be selected files can be saved to local storage or mobile flash disk If user state is selected for the setting of st...

Страница 63: ...n Off Enable or disable display line or change its display position Display line can be as reference for reading 3 3 11 32 Amplitude ruler On off Enable or disable amplitude ruler function When it is on the left most part of screen is displayed easy for observing signal power 3 3 11 33 Backlight brightness Set backlight brightness of spectrum analyzer s LCD screen You can use number keys knob and ...

Страница 64: ...fier Measurement of harmonic distortion Measurement of Third order Intercept Distortion Measurement of AM modulation signal 4 1 Measurement of Continuous wave Signal One of the most common tasks of spectrum analyzer is to measure frequency and amplitude of signal In the following example continuous wave signal 300MHz 10dBm generated by signal generator Agilent E4421B as signal to be measured Opera...

Страница 65: ... analyzer sweeps band pass shape of IF filter by signal Therefore frequencies of two uniform amplitude signals are very close which may cause the top of band pass shape swept by any signal is almost covered by the other signal so it seems like one signal If two signals are not with uniform amplitude but their frequencies are still very close then small signal possibly is flooded with large signal ...

Страница 66: ... two sets of signal generator and observe spectrum analyzer s displayed signal so as to make two signal amplitudes displayed by spectrum analyzer equal 2 Set parameters 1 Reset spectrum analyzer Press PRESET key 2 Set parameters Press FREQ key Press Center frequency key and input 1800 5MHz Press SPAN key Press Span key and input 50kHz Press BW SWP key Press Resolution bandwidth Auto Manual key set...

Страница 67: ...s frequency difference 50kHz amplitude drop approx 40dB To distinguish two non uniform amplitude signals resolution bandwidth must be less than frequency spacing of two signals same with distinguishing two uniform amplitude signals However max frequency bandwidth for distinguishing two non uniform amplitude signals is determined by rectangle coefficient of IF filter rather than 3dB bandwidth Recta...

Страница 68: ...kHz 3 Measurement results Rectangle coefficient for resolution bandwidth filter of UTS1000 Series Spectrum Analyzer is about 5 1 When resolution bandwidth is 30kHz 60dB point is 115kHz half bandwidth is 57 5kHz larger than frequency spacing 50kHz So two input signals can t be distinguished as shown in Figure 4 5 Figure 4 5 Test Done under 30kHz Resolution Bandwidth 1 Reduce resolution bandwidth ob...

Страница 69: ...gnal 500MHz 10dBm generated by signal generator Agilent E4421B as signal to be measured Operation steps 1 Connect equipment Connect signal output of signal generator with RF input on the front panel of spectrumanalyzer 2 Use frequency counter to measure frequency Press FREQ key Press Center frequency key and input 500MHz Press SPAN key Press Span key and input 10MHz 3 Open marker Press MARKER key ...

Страница 70: ...owing example continuous wave signal 500MHz 10dBm generated by signal generator Agilent E4421B as signal to be measured Operation steps 1 Connect equipment Connect signal output of signal generator with RF input on the front panel of spectrum analyzer 2 Set parameters 1 Reset instrument Press PRESET key 2 Set parameters Press FREQ key Press Center frequency key and input 500MHz Press SPAN key Pres...

Страница 71: ... 10dBm generated by signal generator Agilent E4421B as signal to be measured Operation steps 1 Connect equipment Connect signal output of signal generator with RF input on the front panel of spectrum analyzer 2 Use adjacent channel power to measure signal power 1 Reset instrument Press PRESET key 2 Set parameters Press FREQ key Press Center frequency key and input 500MHz Press MEAS key Press Adjac...

Страница 72: ...nnel Power In the following example continuous wave signal 500MHz 10dBm generated by signal generator Agilent E4421B as signal to be measured Operation steps 1 Connect equipment Connect signal output of signal generator with RF input on the panel of spectrum analyzer 2 Use channel power to measure signal power 1 Reset instrument Press PRESET key 2 Set parameters Press FREQ key Press Center frequen...

Страница 73: ... input on the front panel of spectrum analyzer 2 Use occupied bandwidth to measure distribution of signal power 1 Reset instrument Press PRESET key 2 Set parameters Press FREQ key Press Center frequency key and input 500MHz Press MEAS key Press Occupied bandwidth On Off key set occupied bandwidth on 3 Read measurement result Measurement result is displayed in the second half of split screen window...

Страница 74: ...ess Center frequency key and input 500MHz Press SPAN key Press Span key and input 10MHz Press AMP key Press Reference level key and input 20dBm Press Pre amplification On Off key set pre amplification on 3 Read measurement result Output signal tested by spectrum analyzer is shown as in Figure 4 12 Figure 4 12 Measurement Result of Pre amplification 4 9 Measurement of Harmonic Distortion In the fol...

Страница 75: ...h marker is marked at fundamental harmonic frequency is 300MHz amplitude is 10dBm Press MARKER key Press Difference key Press PEAK key Press Next peak key By this time marker s reference is at fundamental harmonic difference is at second harmonic Read measurement results frequency Figure 4 13 Measurement Result of Harmonic Distortion offset 300MHz amplitude difference 26 55 dB Press Next peak key ...

Страница 76: ...ment Reset PRESET key 2 Set parameters Press FREQ key Press Center frequency key and input 500 5MHz Press SPAN key Press Span key and input 5MHz Press BW SWP key Press Resolution bandwidth Auto Manual key set resolution bandwidth in manual mode and input 1kHz 3 Use marker to measure frequency and amplitude Press PEAK key Press Marker key Press Difference key Press Peak key Press Next peak key read...

Страница 77: ...RESETǐkey 2 Set parameters PressǏFREQǐkey Press Center frequency key and input100MHz PressǏSPANǐkey Press Zero span key set spectrum analyzer s span as 0Hz PressǏBW SWPǐkey Press Sweep time Auto Manual key set sweep time in manual mode and input 10ms Press Next page Press Signal sweep PressǏAMPǐkey Press Scale type Linear Logarithmic set scale type as linear 3 Use marker to measure frequency of AM...

Страница 78: ...ment bus such as USB LAN This chapter introduces how to use upper computer software SARemoteControl provided by our Company for remote control over spectrum analyzer through various interfaces in details 5 1 By USB 1 Connect equipment Connect spectrum analyzer with your PC through USB remote control 2 Install USB driver After correct connection between spectrum analyzer and PC and start up spectru...

Страница 79: ...ble clicking Open remote command control panel and then you can send command and read data through this panel as shown in the following 6 Troubleshooting and Maintenance This chapter lists possible common troubleshooting during the use of spectrum analyzer Contents are as follows Black screen and without any display after start up No response or error of key value by pressing keys No signal displa...

Страница 80: ...are failure may occur Please contact with manufacturer 4 Signal frequency inaccurately displayed When test signals if signal frequency read out is beyond allowable error limit or signals shakes on the screen 1 Check whether input signal is stable If yes please check according to step 2 2 Check internal and external references of spectrum analyzer is normal Select reference as internal or external ...

Страница 81: ...dustproof anti static plastic bag to avoid possible damage 3 Use adhesive tape to seal packing case s opening and use nylon strap to reinforce packing case 4 Make FRAGILE NO TOUCH HANDLE WITH CARE on packing case 5 Please consign it as precise instrument 6 Keep all copies of shipping documents Notice Spectrum analyzer may be damaged if it is packed by other kind of material Don t use polystyrene s...

Страница 82: ...not provided Typical value means parameters not guaranteed by product Frequency Frequency range Frequency resolution Frequency reading accuracy frequency marker reading frequency benchmark accuracy 1 span 10 RBW 0 5 span sweep point 1 1Hz Internal benchmark 10MHz Aging rate 1ppm y Temperature drift 0 5ppm 15ć to 35ć Resolution bandwidth RBW Range 10Hz as option 1Hz to500kHz continuous stepping fro...

Страница 83: ...oise fc 500MHz If frequency offset is 100kHz If frequency offset is 1MHz Notes RBW 1kHz sampling and wave detection average times of trace 10 Sweep time 10ms to 3000s Zero span 1ms to 3000s Sweep mode Continuous single Trigger Frequency If frequency offset is 30kHz Trigger source Free video external 876 23 5 7 1 0 18 ...

Страница 84: ...accuracy 90 Input signal range 0dBm to 50dBm 1 5dB Amplitude Max safety input level Average continuous power Max DC input voltage Input attenuator range 0 to 39dB 3dB stepping 1dB compression point Counting resolution Stray and residual response TOI Third order Intercept distortion SHI Second order Intercept distortion Relevant input stray signal Residual response Tracking signal source optional 8...

Страница 85: ... 100KHz to 2GHz Frequency range 100KHz to 2 6GHz Frequency range 100KHz to 3 6GHz Frequency range to Accuracy of modulation rate accuracy 1Hz nominal value modulation rate 1kHz 0 1 modulation rate nominal value modulation rate 1kHz Modulation depth 5 to 95 Accuracy of modulation rate 4 nominal value FM measurement Modulation rate 20Hz to 100kHz Accuracy of modulation rate 1Hz nominal value modulat...

Страница 86: ...t output 10MHz BNC female Input power 0dBm to 10dBm Output power 0dBm 2dB External trigger input BNC female 5V TTL level max 10V 100mA Common parameters Display 6 5 inch TFT LCD Resolution 600 480 Max dimension Weight No more than 2 8kg including battery Working temperature 0ć to 40ć Storage temperature 40ć to 70ć Power Battery Capacity Supply time About 4 hours Charging time About 4 hours 876 23 ...

Страница 87: ...amming Manual AC DC adapter AC input 9V output Optional Pre amplifier 100kHz to 1 5GHz tracking signal source 1Hz resolution bandwidth Audio demodulation AM measurement FM measurement with a pair of headphones PC upper computer software LAN and USB connect with cable Portable bag Standby battery unit Double BNC test cable Double N test cable N BNC adapter N SMA adapter Test antenna LAN connection ...

Страница 88: ... time please place instrument in a dry and cool place Please keep instrument away from any corrosive liquid to avoid damage of instrument Please clean instrument depending on actual service condition Method is as follows 1 Disconnect power and close instrument 2 Use wet not dripping soft cloth gentle detergent or clean water can be used to wipe off dust outside instrument When clean LCD display sc...

Страница 89: ...86 876 23 5 7 1 0 18 ...

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