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08/09/2020

NanoVNA User Guide | NanoVNA User Guide

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Summary of Contents for NanoVNA

Page 1: ...dforoperation iii BasicsofNanoVNA iv OscillationfrequencyofNanoVNA 2 Firstthing 3 inputmethod 4 Howtoreadthescreen i Mainscreen a 1 START2 STOPfrequency b 3 Marker c 4 Calibrationstatus d 5 Referencep...

Page 2: ...Tracechannel ii marker iii Timedomainoperation a Timedomainbandpass b Timedomainlowpassimpulse c Timedomainlowpassstep a Stepresponseexample d Timedomainwindow e Settingthewavelengthreductionfactor Ve...

Page 3: ...version rmware c Buildityourself ii Howtowritethe rmware a Writingwithdfu util Ubuntu b Writingwithdfu util macOS c Writingwithdfu util Windows10 iii Howtowritethe rmware WindowsGUI a Convertthe lefo...

Page 4: ...08 09 2020 NanoVNA User Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 4 51 iii Cablecheck iv Commonmode ltermeasurement...

Page 5: ...chasdiscrepancieswiththelatest rmware ItisalsoavailableinPDFformatontheReleasespageonGitHub https github com cho NanoVNA manual releases WhatisNanoVNA ThereareseveraltypesofNanoVNAhardwareandthisdocum...

Page 6: ...thefrequencycharacteristicsofre ectedpowerandpassedpowerofahighfrequency network RFNetwork NanoVNAmeasuresthefollowingfactors InputvoltageI Qsignal I Qsignalofre ectedvoltage I Qsignalofpassingvoltage...

Page 7: ...o MHz Frequenciesabovethisuseharmonicmode Thefundamentalwaveisnot attenuatedeveninharmonicmode Theusagemodesforeachfrequencyareasfollows Upto MHz fundamentalwave From MHzto MHz rdharmonic MHzto MHz th...

Page 8: ...NanoVNA User Guide https cho45 github io NanoVNA manual 7 8 51 Firstthing Itmustalwaysbecalibrated rstbeforeitcanbeused Initiallycalibrateasfollows MakesureSTARTisat kHz MakesureSTOPis MHz Calibrateac...

Page 9: ...noVNA User Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 9 51 inputmethod TheNanoVNAhasthefollowinginputs Touchpanellongtap Leverswitch L Llongpress R Rlongpress Push Pushandhold Pow...

Page 10: ...s cho45 github io NanoVNA manual 7 10 51 Howtoreadthescreen Mainscreen 1 START2 STOPfrequency Displaystherespectivefrequencieswhenstart stopisspeci ed 3 Marker Thepositionofeachmarkeronthetraceisdispl...

Page 11: ...ompensationisbeingusedforerrorcorrection D directivityIndicatesthaterrorcorrectionisapplied R refrectiontrackingIndicatesthaterrorcorrectionisapplied S sourcematchIndicatesthaterrorcorrectionisapplied...

Page 12: ...noVNA manual 7 12 51 ChannelCH re ection format LOGMAG Scaleis10dB Currentvalueis dB Inaddition thechanneldisplayisreversedfortheactivetrace 8 Batterystatus Ifthebatteryisinstalledandis D2 alreadymoun...

Page 13: ...io NanoVNA manual 7 13 51 9 CENTERfrequency10 span Whenthecenterfrequencyandspanarespeci ed therespectivefrequenciesaredisplayed Menuscreen 11 Menu Youcandisplaythemenubythefollowingoperations Whenyo...

Page 14: ...eypadscreen 12 Numerickeys Tapanumbertoenteronecharacter 13 Backkey Deleteonecharacter Ifyouhavenotenteredanycharacters theentryiscanceledandthepreviousstatusisrestored 14 Unitkey Immediatelyendsthein...

Page 15: ...08 09 2020 NanoVNA User Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 15 51 15 Input eld Theinputitemnameandtheenterednumberaredisplayed...

Page 16: ...08 09 2020 NanoVNA User Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 16 51 Startmeasurement Basicmeasurementsequence 1 Setthefrequencyrangetomeasure 2 Calibrate 3 ConnectDUT...

Page 17: ...mationandgiveasomewhatcorrectdisplay Thishappensif youchangethefrequencyrangeafterloadingthecalibrationdata Atthistime thedisplayofthecalibrationstatusonthescreenis cn D R S T X nisthedatanumberyouare...

Page 18: ...ecablestotheCH andCH ports connectthecableswiththethroughconnector CAL CALIBRATE THRU and execute 7 Finishcalibrationandcalculateerrorcorrectioninformation CAL CALIBRATE DONE 8 Specifythedatanumberand...

Page 19: ...etracecandisplayonlywhatyouneed DISPLAY TRACE TRACE n Selecttoswitchthedisplay Therearethefollowingmethodstoswitchtheactivetrace Tapthetracemarkeryouwanttoactivate DISPLAY TRACE TRACE n Selecttodispla...

Page 20: ...OLAR Polarcoordinateformat LINEAR Absolutevalueofmeasuredvalue REAL Realnumberofmeasuredvalue IMAG Imaginarynumberofmeasuredvalue RESISTANCE Resistancecomponentofthemeasuredimpedance REACTANCE Reactan...

Page 21: ...maindata DISPLAY TRANSOFRM TRANSFORM ON Selecttoconvertthemeasurementdatatothetimedomain TRANSFORM ON Ifisenabled the measurementdataisimmediatelytransformedanddisplayedinthetimedomain Thetimedomainan...

Page 22: ...nbandpass Inbandpassmode youcansimulatetheDUT sresponsetoanimpulsesignal Thetraceformat LINEAR LOGMAG SWR canbesetto Belowisanexampleoftheimpulseresponseofabandpass lter Timedomainlowpassimpulse Inlow...

Page 23: ...https cho45 github io NanoVNA manual 7 23 51 Timedomainlowpassstep Inlowpassmode youcansimulateTDR Inlowpassmode thestartfrequencymustbesetto kHzandthestopfrequencymustbe setaccordingtothedistanceyouw...

Page 24: ...08 09 2020 NanoVNA User Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 24 51 short Stepresponseexample Capacitiveshort Inductiveshort...

Page 25: ...VNA manual 7 25 51 Capacitivediscontinuity Cinparallel Inductivediscontinuity Linseries Timedomainwindow Themeasurablerangeisa nitenumber andthereareminimumandmaximumfrequencies Windowscanbeusedtosmoo...

Page 26: ...on Thisisalwaysstatedinthecablespeci cations Inthetimedomain thedisplayedtimecanbedisplayedintermsofdistance Thewavelengthreductionrateusedfordistance display DISPLAY TRANSFORM VELOCITY FACTOR canbese...

Page 27: ...tfrequencyandstopfrequency Setcenterfrequency span Zerospan Settingthestartfrequencyandstopfrequency Each STIMULUS START STIMULUS STOP andselectingandsetting Setcenterfrequency span Each STIMULUS CENT...

Page 28: ...rilystopthemeasurement Calibrationandsetuprecall Youcansaveupto5calibrationdata TheNanoVNAloadsthedataofnumber0immediatelyafterstarting Calibrationdataisdatathatincludesthefollowinginformation Frequen...

Page 29: ...ecurrentsettingsbyselecting CAL RESET Youcanresetthecurrentcalibrationdatabyselecting Ifyou RESET wanttorecalibrate youmustdo CAL CORRECTION Indicateswhethererrorcorrectioniscurrentlybeingperformed Yo...

Page 30: ...generalsettingsforthedevice Touchpanelcalibrationandtesting CONFIG TOUCH CAL Selecttocalibratethetouchpanel Ifthereisalargedi erencebetweentheactualtappositionandthe recognizedtapposition thiscanbesol...

Page 31: ...youreleaseitfromthe touchpanel itreturnstotheoriginalstate Saveinstrumentsettings CONFIG SAVE Selecttosavethegeneralsettingsofthedevice Generaldevicesettingsaredatathatincludesthefollowing information...

Page 32: ...ttps cho45 github io NanoVNA manual 7 32 51 CONFIG VERSION Selecttodisplaytheversioninformationofthedevice Firmwareupdate CONFIG DFU RESET AND ENTER DFU SelecttoresetthedeviceandenterDFU DeviceFirmwar...

Page 33: ...ersionedandisfrequentlydeveloped GitHubreleases CircleCIbuild GitHubreleaseshasareasonablystablereleaseversionofthe rmware CircleCIhasallthe rmwarepercommit Usethisifyouwanttotrythelatestfeaturesorche...

Page 34: ...sion BootthedeviceinDFUmode UseoneofthefollowingmethodstoenterDFUmode TurnonthepowerbyjumperingtheBOOT pinonthePCB Afterturningonthepower removethejumper Thescreen becomeswhitebutitisnormal CONFIG DFU...

Page 35: ...gcommand build ch bindescribesthepathtothe binofthedownloaded rmware le dfu util d 0483 df11 a 0 s 0x08000000 leave D build ch bin Writingwithdfu util Windows10 ForWindows connectingtheNanoVNAinDFUmod...

Page 36: ...lSerialBuscontrollers of DeviceManager and execute Uninstalldevice ThedriverwillbeinstalledautomaticallywhentheUSBconnectorisremovedandreinserted Next placedfu util Downloadandextractdfu util win zipf...

Page 37: ...ser Guide https cho45 github io NanoVNA manual 7 37 51 Draganddropdfu util exefromExplorertoPowerShelltoinsertthepathautomatically Thefollowingso version youcanstartto whentheversiondisplayofdfu utilw...

Page 38: ...scribesthepathtothe binofthedownloaded rmware le C dfu util dfu util exe d 0483 df11 a 0 s 0x08000000 leave D build ch bin Howtowritethe rmware WindowsGUI ForthosewhoarenotfamiliarwithCUI somecomplica...

Page 39: ...de https cho45 github io NanoVNA manual 7 39 51 isincluded Convertthe leformatwithDFUFileManager First startDFUFileManager I want to GENERATE a DFU file from S19 HEX or BIN files Choose S19 or Hex Cli...

Page 40: ...Writing rmwarewithDfuSeDemo FirstbootthedeviceinDFUmode UseoneofthefollowingmethodstoenterDFUmode TurnonthepowerbyjumperingtheBOOT pinonthePCB Afterturningonthepower removethejumper Thescreen becomesw...

Page 41: ...08 09 2020 NanoVNA User Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 41 51 Selectthe dfu leyousavedearlier...

Page 42: ...08 09 2020 NanoVNA User Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 42 51 Upgrade Clickthebutton...

Page 43: ...020 NanoVNA User Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 43 51 Afterwriting thisscreenwill Leave DFU mode appear ClickthebuttontoexitDFUmode Thedevicewillresetandbootwiththenew...

Page 44: ...ildthe rmwarewith git clone git github com ttrftech NanoVNA git cd NanoVNA git submodule update init recursive make BuildwithDocker Youcanusedockertobuildwithoutanyhassles dockerisafree cross platform...

Page 45: ...nbedonebyGUI byintroducingCortex DebugExtension Iwillomittheplatform dependentpart butinadditiontotheabove thefollowingisrequired openocd VSCode Cortex Debug Cortex DebugissearchedfromVSCodeExtensions...

Page 46: ...Link interface stlink cfg wo interface jlink cfg replaceitwith version 0 2 0 configurations type cortex debug servertype openocd request launch name OpenOCD Debug executable build ch elf configFiles i...

Page 47: ...Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 47 51 IfyoudoStartDebugging F5 OpenOCDwillautomaticallystartandthe rmwarewillbetransferredafterthebuildbymake Whenthetransferiscomplete...

Page 48: ...08 09 2020 NanoVNA User Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 48 51 svdFile Ifisspeci ed thede nedMCUregisterswillbedisplayedinthedebugscreen...

Page 49: ...08 09 2020 NanoVNA User Guide NanoVNA User Guide https cho45 github io NanoVNA manual 7 49 51...

Page 50: ...mpleofuse Bandpass lteradjustment TODO Antennaadjustment HereisanexampleofusingNanoVNAasanantennaanalyzer Thefollowingtwopointsareimportantinadjustingtheantenna Whethertheantennaisinatuned resonantsta...

Page 51: ...ethefrequencyisthetuningpoint ifthereisadeviation adjusttheantennasothatthetuningpointcomestothetargetfrequency Ifthetuningpointisatthedesiredfrequency makesurethattrace0 whichisdisplayingSWR isdispla...

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