{"id":36871,"date":"2019-10-31T22:14:23","date_gmt":"2019-10-31T19:14:23","guid":{"rendered":"https:\/\/prohoster.info\/blog\/sravnitelnyj-obzor-portativnyh-svch-priborov-arinst-vs-anritsu\/"},"modified":"2019-10-31T22:14:23","modified_gmt":"2019-10-31T19:14:23","slug":"sravnitelnyj-obzor-portativnyh-svch-priborov-arinst-vs-anritsu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/sravnitelnyj-obzor-portativnyh-svch-priborov-arinst-vs-anritsu","title":{"rendered":"Krahasim i aparateve portative mikroval\u00eb Arinst vs Anritsu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"Krahasim
\n
\nN\u00eb nj\u00eb test t\u00eb pavarur u shqyrtuan dy instrumente nga zhvilluesi rus \u00abKroks\u00bb. K\u00ebto jan\u00eb mat\u00ebs t\u00eb frekuencave t\u00eb miniaturizuar, konkretisht: nj\u00eb analizator spektri me nj\u00eb gjenerator sinjali t\u00eb integruar dhe nj\u00eb analizator vektorial i qarqeve (reflektomet\u00ebr). T\u00eb dy pajisjet kan\u00eb nj\u00eb frekuenc\u00eb maksimale deri n\u00eb 6,2 GHz. <\/p>\n

Pati interes t\u00eb kuptohet n\u00ebse k\u00ebto jan\u00eb p\u00ebrs\u00ebri 'mat\u00ebs t\u00eb dor\u00ebs' (loj\u00ebra) ose n\u00ebse jan\u00eb instrumente q\u00eb vlen t\u00eb shqyrtohen, p\u00ebr shkak se prodhuesi i pozicionon: - 'Instrumenti \u00ebsht\u00eb i destinuar p\u00ebr p\u00ebrdorim nga amator\u00ebt e radios, p\u00ebr shkak se nuk \u00ebsht\u00eb nj\u00eb mjet mat\u00ebs profesional.' <\/p>\n

V\u00ebmendje lexuesve! K\u00ebto teste jan\u00eb kryer amatore, dhe n\u00eb asnj\u00eb m\u00ebnyr\u00eb nuk pretendojn\u00eb t\u00eb jen\u00eb studime metrologjike t\u00eb mjeteve t\u00eb matjes, sipas standardeve t\u00eb regjistrit shtet\u00ebror dhe gjith\u00e7kaje tjet\u00ebr q\u00eb lidhet me t\u00eb. T\u00eb apasionuarit pas radios do t\u00eb jen\u00eb t\u00eb interesuar t\u00eb shohin matjet krahasuese t\u00eb pajisjeve q\u00eb p\u00ebrdoren shpesh n\u00eb praktik\u00eb (antenat, filtrat, attenuator\u00ebt), dhe jo ato \u2018abstraksione\u2019 teorike, si\u00e7 \u00ebsht\u00eb zakon n\u00eb metrologji, p\u00ebr shembull: ngarkesa t\u00eb paarsyetshme, linja trasuese t\u00eb heterogjene, ose segmente t\u00eb linjave t\u00eb shkurtuara, t\u00eb cilat nuk jan\u00eb p\u00ebrdorur n\u00eb k\u00ebt\u00eb test.
\n <\/a><\/noindex>
\nP\u00ebr t\u00eb shmangur ndikimin e interferenc\u00ebs gjat\u00eb matjes krahasuese t\u00eb antenave, k\u00ebrkohet nj\u00eb dhom\u00eb pa echo, ose nj\u00eb hap\u00ebsir\u00eb t\u00eb hapur. P\u00ebr shkak t\u00eb munges\u00ebs s\u00eb s\u00eb par\u00ebs, matjet u kryen jasht\u00eb, t\u00eb gjitha antenat me diagram t\u00eb drejtp\u00ebrdrejt\u00eb 'shikonin' n\u00eb drejtim t\u00eb qiellit, t\u00eb ankuara n\u00eb nj\u00eb stativ, pa l\u00ebvizje n\u00eb hap\u00ebsir\u00eb gjat\u00eb ndryshimit t\u00eb pajisjeve.
\nN\u00eb teste u p\u00ebrdor nj\u00eb kabllor koaksial fazostabil i klas\u00ebs s\u00eb matjes, Anritsu 15NNF50-1.5C, dhe adapter\u00eb N-SMA nga kompani t\u00eb njohura: Midwest Microwave, Amphenol, Pasternack, Narda.<\/p>\n

\"Krahasim
\n
\n\"Krahasim
\n
\nAdapter\u00ebt e lira t\u00eb prodhimeve kineze nuk u p\u00ebrdor\u00ebn, p\u00ebr shkak t\u00eb munges\u00ebs s\u00eb p\u00ebrs\u00ebritshm\u00ebris\u00eb s\u00eb kontaktit gjat\u00eb riaktivizimit, si dhe p\u00ebr shkak t\u00eb zbehjes s\u00eb mbules\u00ebs jo t\u00eb fort\u00eb antoksiduese, e cila \u00ebsht\u00eb p\u00ebrdorur n\u00eb vend t\u00eb arit t\u00eb zakonsh\u00ebm\u2026<\/p>\n

P\u00ebr t\u00eb siguruar kushte t\u00eb barabarta krahasuese, \u00e7do matje u kalibrua me t\u00eb nj\u00ebjtin set kalibrues OSL, n\u00eb t\u00eb nj\u00ebjtin band\u00eb frekuencash dhe temperaturash aktuale. OSL \u00ebsht\u00eb \"Open\", \"Short\", \"Load\", pra nj\u00eb grup standard kalibrimi: \"masa e papenguar\", \"masa e shkurtimit\" dhe \"ngarkesa e pajtueshme 50,0 Ohm\", me t\u00eb cilat zakonisht kalibrohen analizator\u00ebt vektor\u00eb t\u00eb qarqeve. P\u00ebr formatin SMA u p\u00ebrdor seti kalibrues Anritsu 22S50, i normalizuar n\u00eb band\u00ebn e frekuencave nga DC deri n\u00eb 26,5 GHz, lidhja n\u00eb fletushk\u00eb (49 fq.):
\nwww.testmart.com\/webdata\/mfr_pdfs\/ANRI\/ANRITSU_COMPONENTS.pdf<\/a><\/noindex><\/p>\n

P\u00ebr kalibrimin e formatit N, p\u00ebrkat\u00ebsisht Anritsu OSLN50-1, i normalizuar nga DC deri n\u00eb 6 GHz. <\/p>\n

\"Krahasim
\n
\nRezistenca e matur n\u00eb ngarkes\u00ebn e pajtueshme t\u00eb kalibrator\u00ebve ishte 50 \u00b10,02 Ohm. Matjet u kryen me multimetra laboratorik\u00eb t\u00eb verifikuar dhe preciz, nga firmat HP dhe Fluke.<\/p>\n

\"Krahasim
\n
\n\"Krahasim
\n
\nP\u00ebr t\u00eb siguruar sakt\u00ebsin\u00eb m\u00eb t\u00eb mir\u00eb, si dhe kushte m\u00eb t\u00eb barabarta n\u00eb testet krahasuese, n\u00eb pajisje \u00ebsht\u00eb vendosur nj\u00eb gam\u00eb e ngjashme e filtrit t\u00eb P\u00c7, sepse sa m\u00eb e ngusht\u00eb t\u00eb jet\u00eb kjo gam\u00eb, aq m\u00eb e lart\u00eb \u00ebsht\u00eb sakt\u00ebsia e matjes dhe raporti sinjal\/zhurm\u00eb. Lindi gjithashtu numri m\u00eb i madh i pikave t\u00eb skanimit (af\u00ebr 1000). <\/p>\n

P\u00ebr t\u00eb njohur t\u00eb gjitha funksionalitetet e reflektometrit t\u00eb shqyrtuar, ka nj\u00eb lidhje me udh\u00ebzimin ilustruar nga fabrika:
\narinst.ru\/files\/Manual_Vector_Reflectometer_ARINST_VR_23-6200_RUS.pdf<\/a><\/noindex><\/p>\n

Para \u00e7do matje, t\u00eb gjitha sip\u00ebrfaqet e lidhura n\u00eb lidh\u00ebsit koaksial\u00eb (SMA, RP-SMA, tipi N) jan\u00eb kontrolluar me kujdes, sepse n\u00eb frekuencat mbi 2-3 GHz, past\u00ebrtia dhe gjendja e sip\u00ebrfaqes antioxiduese t\u00eb k\u00ebtyre kontakteve, fillon t\u00eb ket\u00eb nj\u00eb ndikim t\u00eb duksh\u00ebm n\u00eb rezultatet e matjeve dhe stabilitetin e p\u00ebrs\u00ebritshm\u00ebris\u00eb s\u00eb tyre. \u00cbsht\u00eb shum\u00eb e r\u00ebnd\u00ebsishme t\u00eb mbahen t\u00eb pastra sip\u00ebrfaqja e jashtme e pinit qendror n\u00eb lidh\u00ebsin koaksial dhe sip\u00ebrfaqja e brendshme e tav\u00ebs n\u00eb gjysm\u00ebn p\u00ebrball\u00ebse. E nj\u00ebjta \u00ebsht\u00eb e v\u00ebrtet\u00eb edhe p\u00ebr kontaktin 'me mbulese'. Ky kontroll dhe pastrimi i nevojsh\u00ebm zakonisht realizohen n\u00ebn mikroskop ose n\u00ebn nj\u00eb lente me madhe zmadhim. <\/p>\n

Gjithashtu \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb mos lejohet prania e grimcave metalike t\u00eb shk\u00ebputura n\u00eb sip\u00ebrfaqen e izolueseve n\u00eb lidh\u00ebsit koaksial\u00eb, sepse ato fillojn\u00eb t\u00eb sjellin kapacitet parazitar, duke penguar duksh\u00ebm funksionimin dhe kalimin e sinjalit.<\/p>\n

Shembuj tipik t\u00eb ndotjes metalike t\u00eb lidh\u00ebsve SMA, t\u00eb pa dukshme me sy:<\/p>\n

\"Krahasim
\n
\nSipas k\u00ebrkesave t\u00eb fabrik\u00ebs p\u00ebr lidh\u00ebsit koaksial\u00eb t\u00eb tipit t\u00eb lidhjes me filxhan, gjat\u00eb lidhjes NUK duhet t\u00eb lejohet kthimi i kontaktit qendror q\u00eb hyn n\u00eb gril\u00ebn q\u00eb e merr at\u00eb. P\u00ebr k\u00ebt\u00eb, \u00ebsht\u00eb e nevojshme t\u00eb mbani baz\u00ebn axiale t\u00eb gjysm\u00ebs s\u00eb lidh\u00ebsit q\u00eb mb\u00ebrthehet, duke lejuar vet\u00ebm rrotullimin e vet\u00eb gj\u00ebs\u00eb, dhe jo t\u00eb gjith\u00eb konstrukcionin e mb\u00ebrthyer. K\u00ebshtu, zvog\u00eblohet konsideruesh\u00ebm g\u00ebrvishja dhe konsumimi mekanik i sip\u00ebrfaqeve q\u00eb lidhen, duke siguruar kontakt m\u00eb t\u00eb mir\u00eb dhe duke zgjatur numrin e cikleve t\u00eb lidhjes. <\/p>\n

Fatkeq\u00ebsisht, pak nga adhuruesit e k\u00ebsaj e din\u00eb, dhe shumica e tyre mb\u00ebrthejn\u00eb t\u00ebr\u00ebsisht, \u00e7do her\u00eb duke g\u00ebrvishtur dhe ashtu si \u00ebsht\u00eb, shtres\u00ebn m\u00eb t\u00eb holl\u00eb t\u00eb sip\u00ebrfaqeve t\u00eb pun\u00ebs s\u00eb kontakteve. K\u00ebt\u00eb e v\u00ebrtetojn\u00eb \u00e7do her\u00eb shum\u00eb video n\u00eb YouTube, nga ata q\u00eb quhen 'testues-tester\u00eb' t\u00eb pajisjeve t\u00eb reja t\u00eb mikroval\u00ebve.<\/p>\n

N\u00eb k\u00ebt\u00eb shqyrtim testues, t\u00eb gjitha lidhjet e shumta t\u00eb lidh\u00ebsve koaksial\u00eb dhe kalibrator\u00ebve u b\u00ebn\u00eb strikt n\u00eb p\u00ebrputhje me k\u00ebrkesat e m\u00ebsip\u00ebrme t\u00eb funksionimit.<\/p>\n

N\u00eb testet e krahasuara u mat\u00ebn disa antena t\u00eb ndryshme p\u00ebr t\u00eb verifikuar leximet e reflektometrit n\u00eb gamat e ndryshme t\u00eb frekuencave.<\/p>\n

Krahasoni anten\u00ebn 7-element\u00ebshe Uda-Yagi n\u00eb gam\u00ebn 433 MHz (LPD)<\/h4>\n

\"Krahasim
\n
\nP\u00ebr shkak se antenat e k\u00ebtij tipi gjithmon\u00eb kan\u00eb nj\u00eb qoshe t\u00eb theksuar pas dhe disa an\u00ebsore, p\u00ebr past\u00ebrtin\u00eb e testit, t\u00eb gjitha kushtet e mjedisit u ruajt\u00ebn me kujdes, duke p\u00ebrfshir\u00eb mbylljen e maceve n\u00eb sht\u00ebpi. N\u00eb m\u00ebnyr\u00eb q\u00eb, gjat\u00eb fotografimit t\u00eb regjimeve t\u00eb ndryshme n\u00eb ekrane, ai t\u00eb mos ndodhej papritur n\u00eb zon\u00ebn e ndikimit t\u00eb qoshes s\u00eb pasme dhe k\u00ebshtu t\u00eb mos shkaktonte shqet\u00ebsime n\u00eb grafik. <\/p>\n

N\u00eb imazhe jan\u00eb mbledhur fotografi nga tre aparate, 4 regjime nga secili.<\/p>\n

Fotoja e sip\u00ebrme \u00ebsht\u00eb nga VR 23-6200, e mesme nga Anritsu S361E dhe e poshtme nga GenCom 747A.<\/p>\n

Grafik\u00ebt e KSVn:<\/p>\n

\"Krahasim
\n
\nGrafik\u00ebt e humbjeve t\u00eb reflektuara: <\/p>\n

\"Krahasim
\n
\nGrafik\u00ebt e diagramit t\u00eb rezistencave t\u00eb Vollpert-Smith:<\/p>\n

\"Krahasim
\n
\nGrafik\u00ebt e faz\u00ebs:<\/p>\n

\"Krahasim
\n
\nSi\u00e7 duket, grafik\u00ebt e marr\u00eb jan\u00eb shum\u00eb t\u00eb ngjashme, dhe vlerat e matjeve kan\u00eb nj\u00eb shp\u00ebrndarje brenda 0.1% sakt\u00ebsie.<\/p>\n

Krahasoni dipolin koaksial n\u00eb gam\u00ebn 1.2 GHz<\/h4>\n

\n\"Krahasim
\n
\nKSVn:<\/p>\n

\"Krahasim
\n
\nHumbjet e rikthimit:<\/p>\n

\"Krahasim
\n
\nDiagrami i Vollpert-Smith:<\/p>\n

\"Krahasim
\n
\nFaza:<\/p>\n

\"Krahasim
\n
\nT\u00eb tri pajisjet q\u00eb matnin frekuenc\u00ebn e rezonanc\u00ebs s\u00eb k\u00ebsaj antene u p\u00ebrshtat\u00ebn brenda nj\u00eb variacioni prej 0.07%.<\/p>\n

Krahasimi i anten\u00ebs m\u00eb konus n\u00eb gam\u00ebn 3-6 GHz<\/h4>\n

\n\"Krahasim
\n
\nK\u00ebtu u p\u00ebrdor nj\u00eb kabllosh elongues me koneksione N, q\u00eb shkaktoi pak ngat\u00ebrresa n\u00eb matje. Por meqen\u00ebse detyra ishte thjesht t\u00eb krahasoheshin pajisjet, dhe jo kabllot ose antenat, n\u00ebse kishte ndonj\u00eb problem n\u00eb trajektore, pajisjet duhej ta tregonin si\u00e7 ishte.<\/p>\n

Kalibrimi i planit mat\u00ebs (referues) duke marr\u00eb parasysh adaptorin dhe fedin:<\/p>\n

\"Krahasim
\n
\nKSVn n\u00eb band\u00ebn 3 deri 6 GHz:<\/p>\n

\"Krahasim
\n
\nHumbjet e rikthimit:<\/p>\n

\"Krahasim
\n
\nDiagrami i Vollpert-Smith:<\/p>\n

\"Krahasim
\n
\nGrafik\u00ebt e fazave:<\/p>\n

\"Krahasim
\n<\/p>\n

Krahasimi i anten\u00ebs me polarizim cirkular n\u00eb gam\u00ebn 5.8 GHz<\/h4>\n

\n\"Krahasim
\n
\nKSVn:<\/p>\n

\"Krahasim
\n
\nHumbjet e rikthimit:<\/p>\n

\"Krahasim
\n
\nDiagrami i Vollpert-Smith:<\/p>\n

\"Krahasim
\n
\nFaza:<\/p>\n

\"Krahasim
\n<\/p>\n

Matja krahasuese e KSVn p\u00ebr filtrin kinez LPF 1.4 GHz<\/h4>\n

\nPamja e jashtme e filtrit:<\/p>\n

\"Krahasim
\n
\nGrafik\u00ebt e KSVn:<\/p>\n

\"Krahasim
\n<\/p>\n

Matja krahasuese e gjat\u00ebshkurt\u00eb t\u00eb fed (DTF)<\/h4>\n

\nVendosa t\u00eb mat nj\u00eb kabllosh koaksial t\u00eb ri me koneksione N:<\/p>\n

\"Krahasim
\n
\nMe nj\u00eb met\u00ebr dy metra, matova 3 metra e 5 centimetr.<\/p>\n

Dhe ja \u00e7far\u00eb treguan pajisjet:<\/p>\n

\"Krahasim
\n
\nSi\u00e7 thuhet, komentet jan\u00eb t\u00eb tep\u00ebrta.<\/p>\n

Krahasimi i sakt\u00ebsis\u00eb s\u00eb gjenerat\u00ebsit t\u00eb integruar t\u00eb t\u00ebrheqjes<\/h4>\n

\nN\u00eb k\u00ebt\u00eb GIF, jan\u00eb mbledhur 10 fotografi t\u00eb treguesve t\u00eb frekuenc\u00ebs Ch3-54. Pjes\u00ebt superiore t\u00eb imazheve paraqesin treguesin e testuar VR 23-6200. Pjes\u00ebt inferior jan\u00eb sinjalet e d\u00ebrguara nga reflektometri Anritsu. P\u00ebr testin u p\u00ebrzgjodh\u00ebn pes\u00eb frekuenca: 23, 50, 100, 150 dhe 200 MHz. Kur Anritsu d\u00ebrgonte frekuenc\u00ebn me zero n\u00eb shenjat m\u00eb t\u00eb vogla, VR kompakt d\u00ebrgonte me nj\u00eb tepric\u00eb t\u00eb vog\u00ebl, e cila rritej numerikisht me rritjen e frekuenc\u00ebs:<\/p>\n

\"Krahasim
\n
\nMegjithat\u00eb, sipas karakteristikave teknike t\u00eb prodhuesit, kjo nuk mund t\u00eb jet\u00eb nj\u00eb \"minus\", pasi nuk del jasht\u00eb dy p\u00ebrmasave t\u00eb shpallura pas shenj\u00ebs dekimale.<\/p>\n

Imazhet e mbledhura n\u00eb GIF, p\u00ebr \"brend\u00ebsin\u00eb\" e instrumentit:<\/p>\n

\"Krahasim
\n
\nAvantazhet: <\/p>\n

Avantazhet e pajisjes VR 23-6200 jan\u00eb \u00e7mimi i ul\u00ebt, kompakt\u00ebsia portative me autonomi t\u00eb plot\u00eb, q\u00eb nuk k\u00ebrkon nj\u00eb ekran t\u00eb jasht\u00ebm nga kompjuteri ose telefoni inteligjent, duke ofruar nj\u00eb gam\u00eb t\u00eb gjer\u00eb frekuencash t\u00eb shfaqura n\u00eb etiketim. Nj\u00eb aspekt tjet\u00ebr pozitiv \u00ebsht\u00eb se ky nuk \u00ebsht\u00eb nj\u00eb mat\u00ebs skalar, por nj\u00eb mat\u00ebs vektor t\u00eb plot\u00eb. Si\u00e7 tregohet nga rezultatet e matjeve krahasuese, VR praktikisht nuk i dor\u00ebzohet pajisjeve m\u00eb t\u00eb m\u00ebdha, t\u00eb njohura dhe shum\u00eb t\u00eb shtrenjta. N\u00eb \u00e7do rast, p\u00ebr t\u00eb kontrolluar gjendjen e fider\u00ebve dhe antenave, \u00ebsht\u00eb m\u00eb e preferueshme t\u00eb ngjitesh n\u00eb \u00e7ati (ose n\u00eb mast) me k\u00ebt\u00eb t\u00eb vog\u00ebl se me nj\u00eb aparat m\u00eb t\u00eb madh dhe m\u00eb t\u00eb r\u00ebnd\u00eb. Nd\u00ebrsa p\u00ebr gam\u00ebn q\u00eb \u00ebsht\u00eb b\u00ebr\u00eb e mod\u00ebs 5,8GHz p\u00ebr garat FPV (pajisje fluturimi t\u00eb kontrolluara nga radio dhe aeroplan\u00eb, me transmetim video nga bordi n\u00eb syze ose ekrane), \u00ebsht\u00eb v\u00ebrtet nj\u00eb must-have. Sepse lejon q\u00eb gjat\u00eb fluturimeve t\u00eb zgjedh\u00ebsh leht\u00ebsisht anten\u00ebn optimale nga rezervat, ose madje edhe n\u00eb l\u00ebvizje t\u00eb drejtohet dhe rregullohet antena, e cila \u00ebsht\u00eb deformuar pas r\u00ebnies s\u00eb nj\u00eb makine fluturuese garuese. Pajisja mund t\u00eb quhet \"pajisje xhepi\", dhe me mas\u00ebn e saj t\u00eb vog\u00ebl mund t\u00eb varur leht\u00ebsisht edhe n\u00eb nj\u00eb fider t\u00eb holl\u00eb, q\u00eb \u00ebsht\u00eb e p\u00ebrshtatshme p\u00ebr kryerjen e shum\u00eb pun\u00ebve n\u00eb terren. <\/p>\n

Disavantazhet jan\u00eb t\u00eb v\u00ebrejtura:<\/p>\n

1) Nj\u00eb nga disavantazhet m\u00eb t\u00eb m\u00ebdha t\u00eb reflektometrit \u00ebsht\u00eb pamund\u00ebsia p\u00ebr t\u00eb gjetur shpejt markat p\u00ebr minimumin ose maksimumin n\u00eb grafik, pa p\u00ebrmendur gjetjen e 'deltas', ose k\u00ebrkimin automatik t\u00eb minimumeve\/maksimumeve t\u00eb m\u00ebvonsh\u00ebm (apo t\u00eb m\u00ebparsh\u00ebm).
\n Kjo nevoj\u00eb \u00ebsht\u00eb ve\u00e7an\u00ebrisht e dukshme n\u00eb modet LMag dhe SWR, ku mungon ndjesh\u00ebm kjo mund\u00ebsi kontrolli p\u00ebr markat. Duhet t\u00eb aktivizohet marka n\u00eb menun\u00eb p\u00ebrkat\u00ebse, dhe m\u00eb pas duhej t\u00eb l\u00ebvizet manualisht marka n\u00eb minimumin e kurb\u00ebs, p\u00ebr t\u00eb llogaritur frekuenc\u00ebn dhe madh\u00ebsin\u00eb e KSV n\u00eb at\u00eb pik\u00eb. Mund\u00ebsisht, n\u00eb versionet e ardhshme t\u00eb softuerit, prodhuesi do t\u00eb shtoj\u00eb k\u00ebt\u00eb funksion.<\/p>\n

1 a) Gjithashtu, aparati nuk di t\u00eb p\u00ebrcaktoj\u00eb nj\u00eb mod t\u00eb nevojsh\u00ebm t\u00eb shfaqjes p\u00ebr markat, kur kalon mes modeve t\u00eb matjes. <\/p>\n

P\u00ebr shembull, kalova nga moda VSWR n\u00eb LMag (Humori i Kthimit), por markat vazhdojn\u00eb t\u00eb tregojn\u00eb vler\u00ebn e VSWR, nd\u00ebrkoh\u00eb q\u00eb logjikisht duhet t\u00eb paraqesin madh\u00ebsin\u00eb e modulit t\u00eb reflektimit n\u00eb dB, dometh\u00ebn\u00eb at\u00eb q\u00eb tregon grafik\u00eb i p\u00ebrzgjedhur aktualisht.
\nE nj\u00ebjt\u00eb \u00ebsht\u00eb edhe n\u00eb t\u00eb gjitha m\u00ebnyrat e tjera. Q\u00eb t\u00eb lexoni vlerat p\u00ebrkat\u00ebse p\u00ebr grafik\u00ebt e zgjedhura n\u00eb tabel\u00ebn e marker\u00ebve, duhet \u00e7do her\u00eb t\u00eb rikonfiguroni manualisht m\u00ebnyr\u00ebn e shfaqjes p\u00ebr secil\u00ebn nga 4 marker\u00ebt. Duket si nj\u00eb detaj i vog\u00ebl, por do t\u00eb preferohej nj\u00eb pak \u00abautomatik\u00bb. <\/p>\n

1 b) N\u00eb modin m\u00eb t\u00eb k\u00ebrkuar p\u00ebr matjen e VSWR, shkalla e amplitud\u00ebs nuk mund t\u00eb kaloj\u00eb n\u00eb nj\u00eb nivel m\u00eb detalizuar, m\u00eb pak se 2,0 (p.sh. 1,5, ose 1,3).<\/p>\n

2) Ka nj\u00eb ve\u00e7ori t\u00eb vog\u00ebl n\u00eb kalibrimin q\u00eb nuk \u00ebsht\u00eb i nj\u00ebpasnj\u00ebsh\u00ebm. Si gjithmon\u00eb \u00abi hapur\u00bb, ose \u00abparalel\u00bb kalibrimi. Kjo do t\u00eb thot\u00eb se nuk ka nj\u00eb mund\u00ebsi t\u00eb rregullt p\u00ebr t\u00eb regjistruar mas\u00ebn e lexuar nga kalibratori, si\u00e7 \u00ebsht\u00eb zakon n\u00eb pajisje t\u00eb tjera VNA. Zakonisht n\u00eb modin e kalibrimit, pajisja k\u00ebshillon p\u00ebrkat\u00ebsisht se cila mas\u00eb kalibrimi duhet t\u00eb vendoset (n\u00eb radh\u00eb) dhe t\u00eb p\u00ebrfundohet leximi p\u00ebr regjistrim.<\/p>\n

N\u00eb ARINST, operator\u00ebve u jepet mund\u00ebsia p\u00ebr t\u00eb zgjedhur \u00e7do tre shtypje t\u00eb regjistrimeve, q\u00eb k\u00ebrkon nj\u00eb v\u00ebmendje t\u00eb shtuar gjat\u00eb kalibrimit t\u00eb radh\u00ebs. Edhe pse nuk kam pasur asnj\u00ebher\u00eb konfuzion, ekziston nj\u00eb mund\u00ebsi e leht\u00eb p\u00ebr t\u00eb b\u00ebr\u00eb nj\u00eb gabim duke shtypur butonin q\u00eb nuk p\u00ebrputhet me skajin e kalibratorit q\u00eb \u00ebsht\u00eb lidhur aktualisht. <\/p>\n

N\u00eb p\u00ebrdit\u00ebsimet e ardhshme t\u00eb firmware-it, krijuesit mund t\u00eb modifikojn\u00eb k\u00ebt\u00eb \u2018paraleliz\u00ebm\u2019 t\u00eb hapur t\u00eb zgjedhjes n\u00eb nj\u00eb \u2018sekuenc\u00eb\u2019, p\u00ebr t\u00eb eliminuar mund\u00ebsin\u00eb e gabimeve nga operator\u00ebt. Nuk \u00ebsht\u00eb rast\u00ebsi q\u00eb n\u00eb instrumentet e m\u00ebdha \u00ebsht\u00eb p\u00ebrdorur nj\u00eb sekuenc\u00eb e qart\u00eb veprimesh me masat e kalibrimit, p\u00ebr t\u00eb shmangur nj\u00eb ngat\u00ebrrim t\u00eb till\u00eb. <\/p>\n

3) Nj\u00eb gam\u00eb shum\u00eb e ngusht\u00eb temperaturash p\u00ebr kalibrim. N\u00ebse Anritsu ofron nj\u00eb gam\u00eb (p.sh.) nga +18\u00b0C deri n\u00eb +48\u00b0C pas kalibrimit, Arinst ofron vet\u00ebm \u00b1 3\u00b0C nga temperatura e kalibrimit, q\u00eb mund t\u00eb jet\u00eb pak kur b\u00ebhet fjal\u00eb p\u00ebr pun\u00eb n\u00eb terren (jasht\u00eb), n\u00ebn diell, ose n\u00eb hije.<\/p>\n

P\u00ebr shembull: e kalibrat\u00eb pasdite, nd\u00ebrsa punoni me matje deri n\u00eb mbr\u00ebmje, dielli \u00ebsht\u00eb zhdukur, temperatura ka r\u00ebn\u00eb dhe leximet kan\u00eb filluar t\u00eb jen\u00eb t\u00eb pasakta. <\/p>\n

P\u00ebr ndonj\u00eb arsye, nuk shfaqet nj\u00eb mesazh ndalimi q\u00eb thot\u00eb - \"rikalibroni, p\u00ebr shkak t\u00eb daljes jasht\u00eb gam\u00ebs temperatur\u00eb t\u00eb kalibrimit t\u00eb kaluar\". N\u00eb vend t\u00eb k\u00ebsaj, fillojn\u00eb matjet e gabuara me nj\u00eb zero t\u00eb devijuar, q\u00eb ndikon duksh\u00ebm n\u00eb rezultatin e matjeve.<\/p>\n

P\u00ebr krahasim, k\u00ebshtu e raporton reflektometri Anritsu:<\/p>\n

\"Krahasim
\n
\n4) P\u00ebr mjedisin normal, por p\u00ebr hap\u00ebsir\u00eb t\u00eb hapur, ekrani \u00ebsht\u00eb shum\u00eb i zbeht\u00eb.<\/p>\n

N\u00eb nj\u00eb dit\u00eb me diell, jasht\u00eb nuk lexon asgj\u00eb, madje edhe n\u00ebse mbuloni ekranin me dor\u00eb.
\n Rregullimi i ndrit\u00ebs s\u00eb ekranit nuk \u00ebsht\u00eb i parashikuar q\u00eb t\u00eb b\u00ebhet.<\/p>\n

5) D\u00ebshironi t\u00eb rip\u00ebrshkruani butonat harduerike p\u00ebr t\u00eb tjer\u00eb, pasi disa nuk reagojn\u00eb menj\u00ebher\u00eb n\u00eb shtytje.<\/p>\n

6) Ekrani prekje n\u00eb disa vende nuk \u00ebsht\u00eb i ndjesh\u00ebm, nd\u00ebrsa n\u00eb disa vende \u00ebsht\u00eb tep\u00ebr i ndjesh\u00ebm.<\/p>\n

Konkluzionet e reflektometrit VR 23-6200<\/h4>\n

\nN\u00ebse nuk ngulmojm\u00eb te disavantazhet, krahasuar me zgjidhje t\u00eb tjera buxhetore, portative dhe t\u00eb qasshme n\u00eb treg, si RF Explorer, N1201SA, KC901V, RigExpert, SURECOM SW-102, NanoVNA \u2014 ky Arinst VR 23-6200 duket si zgjedhja m\u00eb e mir\u00eb. Sepse t\u00eb tjer\u00ebt ose kan\u00eb nj\u00eb \u00e7mim mjaft t\u00eb shtrenjt\u00eb, ose jan\u00eb t\u00eb kufizuar n\u00eb band\u00ebn e frekuencave dhe k\u00ebshtu nuk jan\u00eb universale, ose n\u00eb thelb jan\u00eb instrumente t\u00eb tipit loj\u00eb. Pavar\u00ebsisht modestis\u00eb dhe \u00e7mimit relativisht t\u00eb ul\u00ebt, vektori reflektometr VR 23-6200, n\u00eb p\u00ebrvoj\u00eb, doli t\u00eb jet\u00eb nj\u00eb instrument mjaft i k\u00ebnaqsh\u00ebm, madje edhe kaq portativ. Po ashtu, n\u00ebse prodhuesit do t'i rregullonin disavantazhet dhe do t\u00eb zgjerojn\u00eb paksa skajet m\u00eb t\u00eb ul\u00ebta t\u00eb frekuenc\u00ebs p\u00ebr amator\u00ebt e radios t\u00eb val\u00ebve t\u00eb shkurtra, ky instrument do t\u00eb zinte nj\u00eb vend nderi mes t\u00eb gjitha buxhetoreve globale t\u00eb k\u00ebtij lloji, pasi do t\u00eb ofronte nj\u00eb mbulim t\u00eb qassh\u00ebm n\u00eb \u00e7mim: nga \"KaV\u00eb deri n\u00eb eFPeV\u00eb\", dmth nga 2 MHz n\u00eb KV (160 metra), deri n\u00eb 5,8 GHz p\u00ebr FPV (5 centimetra). Dhe \u00ebsht\u00eb e d\u00ebshirueshme pa nd\u00ebrprerje n\u00eb gjith\u00eb band\u00ebn, ndryshe nga sa ndodhi me RF Explorer: <\/p>\n

\"Krahasim
\n
\n Paqartasht , se shpejt do t\u00eb shfaqen edhe zgjidhje m\u00eb t\u00eb lira n\u00eb nj\u00eb gam\u00eb t\u00eb till\u00eb t\u00eb gjer\u00eb frekuencash, dhe kjo do t\u00eb ishte fantastike! Por p\u00ebr momentin (n\u00eb qershor-korrik 2019), sipas mendimit tim skrom, ky reflektometr \u00ebsht\u00eb m\u00eb i miri n\u00eb bot\u00eb nd\u00ebr portativ\u00ebt dhe zgjidhjet e lira q\u00eb jan\u00eb n\u00eb dispozicion n\u00eb treg. <\/p>\n

\u2014 Pjesa e dyt\u00eb<\/b>
\n Analizatori i spektrit me gjeneruesin e gjurm\u00ebve SSA-TG R2<\/b><\/p>\n

Instrumenti i dyt\u00eb \u00ebsht\u00eb nj\u00eblloj interesant si reflektometri vektorial.
\nAi lejon q\u00eb t\u00eb b\u00ebhen matje t\u00eb parametrave \"kalues\" t\u00eb pajisjeve t\u00eb ndryshme t\u00eb MW, n\u00eb modin e matjeve me 2 porte (lidhja S21). P\u00ebr shembull, mund t\u00eb kontrolloni funksionimin dhe matni sakt\u00ebsisht koeficientin e forcimit t\u00eb boosterave, amplifikator\u00ebve, ose sasin\u00eb e humbjes s\u00eb sinjalit n\u00eb attenuator\u00ebt, filtrat, kabllot koaksiale (feeder), dhe pajisje dhe module t\u00eb tjera aktive dhe pasive, gj\u00eb q\u00eb nuk mund t\u00eb b\u00ebhet me reflektometrin me nj\u00eb port\u00eb.
\nKy \u00ebsht\u00eb nj\u00eb analizues spektri t\u00eb plot\u00eb, n\u00eb nj\u00eb diapazon shum\u00eb t\u00eb gjer\u00eb dhe t\u00eb vazhduesh\u00ebm frekuencash, q\u00eb nuk ndodh shpesh mes pajisjeve t\u00eb lira p\u00ebr amator\u00eb. P\u00ebrve\u00e7 k\u00ebsaj, ai ka nj\u00eb gjenerator sinjalesh t\u00eb ndjekjes s\u00eb integruar n\u00eb frekuenca radioje, gjithashtu n\u00eb nj\u00eb gam\u00eb t\u00eb gjer\u00eb. Kjo \u00ebsht\u00eb nj\u00eb ndihm\u00eb e nevojshme p\u00ebr reflaktometrin dhe mat\u00ebsin e anten\u00ebs. Kjo lejon t\u00eb shihni n\u00ebse ka devijime t\u00eb frekuenc\u00ebs s\u00eb mb\u00ebshtetjes n\u00eb transmetues, nd\u00ebrveprimin parazitar, klipping dhe m\u00eb shum\u00eb...
\n Duke pasur nj\u00eb gjenerator ndjek\u00ebs dhe nj\u00eb analizues spektri, duke shtuar nj\u00eb ndar\u00ebs t\u00eb jasht\u00ebm n\u00eb drejtim (ose nj\u00eb ur\u00eb), b\u00ebhet e mundur t\u00eb matet KSVn i antenave, por vet\u00ebm n\u00eb m\u00ebnyr\u00ebn e matjes skalar, pa marr\u00eb parasysh faz\u00ebn, ashtu si do t\u00eb ishte n\u00eb matjen vektoriale.
\nLidhja me udh\u00ebzimin nga fabrika:
\n Ky instrument \u00ebsht\u00eb krahasuar kryesisht me kompleksin e kombinuar, mat\u00ebsin GenCom 747A, me kufizim maks p\u00ebr frekuenc\u00ebn deri n\u00eb 4 GHz. Gjithashtu n\u00eb testet mori pjes\u00eb nj\u00eb mat\u00ebs fuqie t\u00eb klasit precision Anritsu MA24106A, me tabela korrektuese t\u00eb instaluara n\u00eb fabrik\u00eb p\u00ebr frekuenc\u00ebn dhe temperatur\u00ebn e matur, t\u00eb normalizuar deri n\u00eb 6 GHz. <\/p>\n

Raft i analizatorit t\u00eb spektrit t\u00eb zhurm\u00ebs, me nj\u00eb \"p\u00ebrmbajtje\" t\u00eb p\u00ebrshtatur n\u00eb hyrje:<\/p>\n

\"Krahasim
\n
\nMinimumi -85,5 dB, u gjend n\u00eb af\u00ebrsi t\u00eb LPD (426 MHz).
\n M\u00eb tej, me rritjen e frekuenc\u00ebs, shkalla e zhurm\u00ebs gjithashtu rritet, gj\u00eb q\u00eb \u00ebsht\u00eb plotsisht normale:
\n 1500 MHz \u2014 83,5 dB. 2400 MHz \u2014 79,6 dB. N\u00eb 5800 MHz \u2014 66,5 dB.<\/p>\n

Matja e koeficientit t\u00eb forcimit t\u00eb nj\u00eb p\u00ebrforcuesi aktiv Wi-Fi, bazuar n\u00eb modul\u00ebn XQ-02A
\n\"Krahasim
\n
\nKarakteristika e k\u00ebtij p\u00ebrforcuesi \u00ebsht\u00eb aktivizimi automatik, i cili, kur ka energji t\u00eb ofruar, nuk e mban menj\u00ebher\u00eb p\u00ebrforcuesin n\u00eb gjendje t\u00eb aktivizuar. Duke eksperimentuar me attenuator\u00ebt n\u00eb nj\u00eb instrument t\u00eb madh, arrit\u00ebm t\u00eb zbulojm\u00eb pragun e aktivizimit t\u00eb automatik\u00ebs s\u00eb p\u00ebrfshir\u00eb. U zbulua se p\u00ebrforcuesi kalon n\u00eb gjendje aktive dhe fillon t\u00eb forcoj\u00eb sinjalin q\u00eb kalon, vet\u00ebm n\u00ebse ai \u00ebsht\u00eb m\u00eb i madh se minus 4 dBm (0,4 mW):
\n\"Krahasim
\n
\nP\u00ebr k\u00ebt\u00eb test n\u00eb instrumentin e vog\u00ebl, thjesht nuk kishte nivele t\u00eb mjaftueshme t\u00eb daljes nga gjeneratori t\u00eb p\u00ebrfshir\u00eb, i cili ka nj\u00eb gam\u00eb t\u00eb dokumentuar n\u00eb TTHX, nga minus 15 deri n\u00eb minus 25 dBm. Dhe k\u00ebtu ishte e nevojshme minus 4, q\u00eb \u00ebsht\u00eb shum\u00eb m\u00eb shum\u00eb se minus 15. Po, mund t\u00eb ishte p\u00ebrdorur nj\u00eb p\u00ebrforcues i jasht\u00ebm, por detyra ishte ndryshe.
\n Morrja e madhe mat\u00ebse e KU aktive t\u00eb booster-it, rezultoi 11 dB, sipas TTHX.
\nNd\u00ebrsa me pajisjen e vog\u00ebl arrit\u00ebm t\u00eb zbulojm\u00eb madh\u00ebsin\u00eb e dob\u00ebsimit t\u00eb booster-it t\u00eb fikur, por me furnizim energjie. Doli se booster-i pa energji dob\u00ebsonte sinjalin q\u00eb kalonte deri te antena me 12,000 her\u00eb. P\u00ebr k\u00ebt\u00eb arsye, nj\u00eb her\u00eb, duke fluturuar dhe haruar t\u00eb ofroj energji p\u00ebr booster-in e jasht\u00ebm, hexacopter-i i gjat\u00eb fluturoi 60-70 metra dhe u ndal p\u00ebr t'u rikthyer automatikisht n\u00eb pik\u00ebn e ngritjes. At\u00ebher\u00eb lindte nevoja p\u00ebr t\u00eb kuptuar madh\u00ebsin\u00eb e dob\u00ebsimit t\u00eb kalimit t\u00eb amplifikatorit t\u00eb fikur. Doli t\u00eb ishte rreth 41-42 dB.<\/p>\n

Generator zhurme 1-3500 MHz
\n\"Krahasim
\n
\nNj\u00eb generator zhurme i thjesht\u00eb, i klas\u00ebs amatore, prodhim kinez.
\nKrahasimi linear i matjeve n\u00eb dB k\u00ebtu \u00ebsht\u00eb disi i pavend, p\u00ebr shkak t\u00eb ndryshimit t\u00eb vazhduesh\u00ebm t\u00eb amplitudh\u00ebs n\u00eb frekuenca t\u00eb ndryshme, t\u00eb shkaktuar nga natyra e vet\u00eb zhurm\u00ebs.
\nMegjithat\u00eb, nga t\u00eb dy pajisjet arriti t\u00eb marr\u00eb grafik\u00eb shum\u00eb t\u00eb ngjashme, krahasuese t\u00eb A\u00c7H-s\u00eb:<\/p>\n

\"Krahasim
\n
\nK\u00ebtu diapazoni i frekuencave n\u00eb pajisje ishte i caktuar nj\u00eblloj, nga 35 deri n\u00eb 4000 MHz.
\nDhe sipas amplitud\u00ebs, si\u00e7 duket, u arrit\u00ebn gjithashtu vlera mjaft t\u00eb ngjashme.<\/p>\n

A\u00c7H kaluese (matja S21) e filtrit LPF 1.4
\nN\u00eb gjysm\u00ebn e par\u00eb t\u00eb rishikimit, ky filtr \u00ebsht\u00eb p\u00ebrmendur tashm\u00eb. Por atje \u00ebsht\u00eb matur KSVn e tij, nd\u00ebrsa k\u00ebtu \u00ebsht\u00eb A\u00c7H e kalimit, ku \u00ebsht\u00eb qart\u00eb se \u00e7far\u00eb dhe me sa z\u00eb ul ai kalon, si dhe ku dhe sa prer\u00eb.<\/p>\n

\"Krahasim
\n
\nK\u00ebtu \u00ebsht\u00eb m\u00eb n\u00eb detaje e dukshme se t\u00eb dy pajisjet kan\u00eb regjistruar pothuajse nj\u00eblloj A\u00c7H t\u00eb k\u00ebtij filtri:<\/p>\n

\"Krahasim
\n
\nN\u00eb frekuenc\u00ebn e fillimit t\u00eb prerjes 1400 MHz, Arinst tregoi amplitud\u00eb minus 1.4 dB (marker blu Mkr 4), nd\u00ebrsa GenCom minus 1.79 dB (marker M5). <\/p>\n

Matja e z\u00eb ul\u00ebsve<\/p>\n

\"Krahasim
\n
\nP\u00ebr matjet krahasuese zgjodha z\u00eb ul\u00ebsit m\u00eb t\u00eb sakt\u00eb, t\u00eb mark\u00ebs. Q\u00ebllimisht nuk zgjodha kinez\u00eb, p\u00ebr shkak t\u00eb variacioneve t\u00eb konsiderueshme q\u00eb kan\u00eb.
\nSpektri i frekuencave mbetet ende i nj\u00ebjt\u00eb, nga 35 deri n\u00eb 4000 MHz. Kalibrimi i m\u00ebnyr\u00ebs s\u00eb dyfisht\u00eb t\u00eb matjeve u b\u00eb po ashtu me kujdes, me kontroll t\u00eb domosdosh\u00ebm t\u00eb past\u00ebrtis\u00eb s\u00eb sip\u00ebrfaqeve t\u00eb gjitha kontakteve n\u00eb pajisjet koaksiale t\u00eb lidhura. <\/p>\n

Rezultati i kalibrimit n\u00eb nivelin 0 dB:<\/p>\n

\"Krahasim
\n
\nFrekuenca e mostrave u b\u00eb n\u00eb mes, n\u00eb qend\u00ebr t\u00eb shiritit t\u00eb caktuar, konkretisht 2009.57 MHz. Numri i pikave t\u00eb skanimit gjithashtu ishte i nj\u00ebjt\u00eb, 1000+1. <\/p>\n

\"Krahasim
\n
\nSi\u00e7 tregohet, rezultati i matjeve t\u00eb s\u00eb nj\u00ebjt\u00ebs nj\u00ebsi t\u00eb attenuatorit 40 dB ishte, ndon\u00ebse af\u00ebr, paksa i pap\u00ebrputhsh\u00ebm. Arinst SSA-TG R2 tregoi 42,4 dB, nd\u00ebrsa GenCom 40,17 dB, n\u00ebn kushte t\u00eb barabarta. <\/p>\n

Attenuator 30 dB
\n\"Krahasim
\n
\nArinst = 31,9 dB
\nGenCom = 30,08 dB
\nNj\u00eb p\u00ebrhapje e ngjashme e vog\u00ebl n\u00eb p\u00ebrqindje \u00ebsht\u00eb arritur gjithashtu gjat\u00eb matjeve t\u00eb attenuator\u00ebve t\u00eb tjer\u00eb. Por p\u00ebr shkak t\u00eb kursimit t\u00eb koh\u00ebs dhe hap\u00ebsir\u00ebs s\u00eb lexuesve, ato nuk u p\u00ebrfshin\u00eb n\u00eb k\u00ebt\u00eb rishikim, pasi jan\u00eb t\u00eb ngjashme me matjet e paraqitura m\u00eb sip\u00ebr.<\/p>\n

Min dhe max track
\nPavar\u00ebsisht portabilitetit dhe thjesht\u00ebsis\u00eb s\u00eb pajisjes, prodhuesit e kan\u00eb shtuar nj\u00eb opsion t\u00eb dobish\u00ebm si\u00e7 \u00ebsht\u00eb shfaqja e minimaleve dhe maksimaleve akumuluese t\u00eb trajektimeve n\u00eb ndryshim, t\u00eb cilat k\u00ebrkohen gjat\u00eb konfigurimeve t\u00eb ndryshme.
\nTre imazhe t\u00eb mbledhura n\u00eb nj\u00eb imazh gif, n\u00eb shembullin e filtrit LPF t\u00eb gam\u00ebs 5,8 GHz, n\u00eb lidhjen e t\u00eb cilit u b\u00ebn\u00eb q\u00ebllimisht nd\u00ebrhyrje dhe shqet\u00ebsime t\u00eb komunikimit:<\/p>\n

\"Krahasim
\n
\nTrajektorja e verdh\u00eb \u2014 presa aktuale e kthes\u00ebs s\u00eb fundit t\u00eb nxjerrjes.
\nTrajektorja e kuqe \u2014 maksimet e mbledhura n\u00eb memorie nga nxjerrjet e kaluara.
\nPista e err\u00ebt (pas p\u00ebrpunimit dhe kompresimit t\u00eb imazheve, gri) \u2014 p\u00ebrkat\u00ebsisht minimumet e A\u00c7HK.<\/p>\n

Matja KSVn e antenave
\nSi\u00e7 u p\u00ebrmend n\u00eb fillim t\u00eb shqyrtimit, ky instrument ka mund\u00ebsin\u00eb e lidhjes s\u00eb nj\u00eb ndar\u00ebsi t\u00eb drejtuar t\u00eb jasht\u00ebm (Direct coupler), ose nj\u00eb ure mat\u00ebse q\u00eb ofrohet ve\u00e7mas (por vet\u00ebm deri n\u00eb 2,7 GHz). Programi parashikon kryerjen e kalibrimit OSL, p\u00ebr t\u00eb treguar instrumentit pik\u00ebn e fillimit n\u00eb KSVn.<\/p>\n

\"Krahasim
\n
\nK\u00ebtu shfaqet nj\u00eb ndar\u00ebs i drejtuar me fider\u00eb mat\u00ebs t\u00eb stabilizuar me faz\u00eb, por tashm\u00eb i shk\u00ebputur nga instrumenti pas p\u00ebrfundimit t\u00eb matjeve t\u00eb KSVn. Por k\u00ebtu ai paraqitet n\u00eb pozita t\u00eb hapur, k\u00ebshtu q\u00eb mos e merrni parasysh nd\u00ebshkimin n\u00eb lidhje me lidhjen e dukshme. Ndar\u00ebsi i drejtuar lidhet nga e majta me instrumentin, por n\u00eb form\u00ebn e p\u00ebrmbysur me markimin prapa. At\u00ebher\u00eb d\u00ebrgimi i val\u00ebs s\u00eb r\u00ebn\u00eb nga gjeneratori (porti i sip\u00ebrm) dhe marrja e reflektuar n\u00eb hyrjen e analizuesit (porti i posht\u00ebm) do t\u00eb funksionoj\u00eb sakt\u00eb.<\/p>\n

N\u00eb dy fotografit\u00eb e kombinuara, tregohet nj\u00eb shembull i till\u00eb i lidhjes dhe matjes s\u00eb KSVn-s\u00eb p\u00ebr anten\u00ebn e polarizimit t\u00eb rrethit t\u00eb tipit 'Klever', me nj\u00eb frekuenc\u00eb prej 5.8 GHz.<\/p>\n

\"Krahasim
\n
\nPavar\u00ebsisht se kjo mund\u00ebsi matjeje e KSVn-s\u00eb nuk \u00ebsht\u00eb nd\u00ebr q\u00ebllimet kryesore t\u00eb k\u00ebtij aparati, megjithat\u00eb, si\u00e7 shihet n\u00eb fotografi, jan\u00eb disa pyetje t\u00eb arsyeshme. Shkalla e caktuar dhe e pandryshueshme e grafikut t\u00eb KSVn-s\u00eb, me nj\u00eb vler\u00eb t\u00eb madhe pre 6 nj\u00ebsi. Megjith\u00ebse grafiku tregon p\u00ebraf\u00ebrsisht nj\u00eb pasqyr\u00eb t\u00eb sakt\u00eb t\u00eb kurb\u00ebs KSVn t\u00eb k\u00ebsaj antene, numri i sakt\u00eb nuk shfaqet fare n\u00eb tregues, me dhjet\u00ebra dhe qindra t\u00eb fragmentuara q\u00eb nuk shfaqen. Shfaqen vet\u00ebm vlera t\u00eb plota, si 1, 2, 3... Kjo l\u00eb nj\u00eb far\u00eb paqart\u00ebsie mbi rezultatin e matjes.
\nMegjithat\u00eb, p\u00ebr vler\u00ebsime t\u00eb p\u00ebraf\u00ebrta, p\u00ebr t\u00eb kuptuar n\u00eb p\u00ebrgjith\u00ebsi n\u00ebse antena \u00ebsht\u00eb e mir\u00eb ose e d\u00ebmtuar, \u00ebsht\u00eb shum\u00eb e pranueshme. Por p\u00ebr t\u00eb b\u00ebr\u00eb p\u00ebrshtatjet e holl\u00ebsishme n\u00eb pun\u00ebn me anten\u00ebn do t\u00eb jet\u00eb m\u00eb e v\u00ebshtir\u00eb, ndon\u00ebse e mundshme. <\/p>\n

Matja e sakt\u00ebsis\u00eb s\u00eb gjeneratilit t\u00eb integruar
\nAs with the reflectometer, here too the specifications only state 2 decimal places of accuracy.
\nIt is indeed naive to expect a budget pocket device to have a rubidium frequency standard onboard. *smiley face*
\nHowever, the curious reader will certainly be interested in the error magnitude of such a miniature generator. Since the calibrated precision frequency counter was only available up to 250 MHz, I limited my review to 4 frequencies at the lower end of the range, just to understand the error trend, if any is discovered. It should be noted that photographs at higher frequencies were also prepared from another device. But to save space in the article, they were not included in this review for the reason of confirming the same proportional error magnitude found at lower orders.<\/p>\n

Four photographs at four frequencies were compiled into a gif image, also for saving space: 50.00; 100.00; 150.00 and 200.00 MHz
\n\"Krahasim
\n
\nThe trend and the magnitude of the existing error are clearly visible:
\n50.00 MHz shows a slight frequency overshoot of the generator, specifically by 954 Hz.
\n100,00 MHz, p\u00ebrkat\u00ebsisht pak m\u00eb shum\u00eb, +1,79 KHz.
\n150,00 MHz, akoma m\u00eb shum\u00eb +1,97 KHz.
\n200,00 MHz, +3,78 KHz.<\/p>\n

M\u00eb pas, frekuenca m\u00eb e lart\u00eb u mat nga analizatori GenCom, i cili kishte nj\u00eb mat\u00ebs frekuencash t\u00eb mir\u00eb. Ja p\u00ebr shembull, n\u00ebse gjeneratori i integruar n\u00eb GenCom nuk jepte 800 hertz n\u00eb frekuenc\u00ebn 50,00 MHz, at\u00ebher\u00eb jo vet\u00ebm q\u00eb mat\u00ebsi i jasht\u00ebm e tregoi k\u00ebt\u00eb, por edhe vet\u00eb analizatori i spektrit e matoi sakt\u00ebsisht k\u00ebt\u00eb vler\u00eb:<\/p>\n

\"Krahasim
\n
\nM\u00eb posht\u00eb \u00ebsht\u00eb nj\u00eb nga fotografit\u00eb e ekranit, me frekuenc\u00ebn e matur t\u00eb gjeneratorit t\u00eb integruar n\u00eb SSA-TG R2, duke marr\u00eb si shembull mesataren e gam\u00ebs Wi-Fi 2450 MHz:
\n\"Krahasim
\n
\nP\u00ebr t\u00eb kursyer hap\u00ebsir\u00eb n\u00eb artikull, gjithashtu nuk e publikova fotografit\u00eb e tjera t\u00eb ngjashme t\u00eb ekranit, n\u00eb vend t\u00eb tyre nj\u00eb p\u00ebrmbledhje e shkurt\u00ebr e rezultateve t\u00eb matjeve p\u00ebr gamat mbi 200 MHz:
\nN\u00eb frekuenc\u00ebn 433,00 MHz, tejkalimi ishte +7,92 KHz.
\nN\u00eb frekuenc\u00ebn 1200,00 MHz, = +22,4 KHz.
\nN\u00eb frekuenc\u00ebn 2450,00 MHz, = +42,8 KHz (n\u00eb foto e m\u00ebparshme).
\nN\u00eb frekuenc\u00ebn 3999,50 MHz, = +71,6 KHz.
\nMegjithat\u00eb, karakteristikat e deklaruara n\u00eb specifikimet fabrikore kan\u00eb dy shifra pas pik\u00ebs, t\u00eb cilat jan\u00eb sakt\u00ebsisht t\u00eb ruajtura n\u00eb t\u00eb gjitha gamat.<\/p>\n

Krahasimi i matjes s\u00eb amplitud\u00ebs s\u00eb sinjalit.
\nN\u00eb figur\u00ebn gif t\u00eb paraqitur m\u00eb posht\u00eb, jan\u00eb mbledhur 6 fotografi, ku analizatori Arinst SSA-TG R2, mat vet\u00eb gjeneratorin e tij, n\u00eb gjasht\u00eb frekuenca t\u00eb zgjedhura rast\u00ebsisht.<\/p>\n

\"Krahasim
\n
\n50 MHz -8,1 dBm; 200 MHz -9,0 dBm; 1000 MHz -9,6 dBm;
\n 2500 MHz -9,1 dBm; 3999 MHz \u2014 5,1 dBm; 5800 MHz -9,1 dBm
\nMegjith\u00ebse amplituda maksimale e gjeneratorit \u00ebsht\u00eb shpallur se nuk \u00ebsht\u00eb m\u00eb e lart\u00eb se minus 15 dBm, n\u00eb verifikim rezultojn\u00eb vlera t\u00eb tjera.
\nP\u00ebr t\u00eb zbuluar arsyet e k\u00ebsaj indikacioni t\u00eb amplitud\u00ebs, u kryen matjet me gjeneratorin Arinst SSA-TG R2, n\u00eb sensorin preciz Anritsu MA24106A, me kalibrim zero n\u00eb ngarkes\u00ebn e p\u00ebrshtatur, para fillimit t\u00eb matjeve. Gjithashtu, \u00e7do her\u00eb u fut vlera e frekuenc\u00ebs, p\u00ebr sakt\u00ebsin\u00eb e matjes duke marr\u00eb parasysh koeficient\u00ebt sipas tabel\u00ebs korrigjuese t\u00eb integruar nga fabrika p\u00ebr frekuenc\u00ebn dhe temperatur\u00ebn.<\/p>\n

\"Krahasim
\n
\n35 MHz -9,04 dBm; 200 MHz -9,12 dBm; 1000 MHz -9,06 dBm;
\n 2500 MHz -8,96 dBm; 3999 MHz \u2014 7,48 dBm; 5800 MHz -7,02 dBm
\nSi\u00e7 duket, vlera e amplitud\u00ebs s\u00eb sinjalit t\u00eb gjeneruar nga gjeneratori i integruar n\u00eb SSA-TG R2, analizatori mashton mjaft mir\u00eb (p\u00ebr nj\u00eb klas\u00eb amator\u00ebsh t\u00eb sakt\u00ebsis\u00eb). Dhe amplituda e gjeneratorit e treguar posht\u00eb ekranit t\u00eb pajisjes, rezulton t\u00eb jet\u00eb thjesht \u00abe vizatuar\u00bb, pasi realisht ai duket se prodhon nj\u00eb nivel m\u00eb t\u00eb lart\u00eb, sesa duhet brenda kufijve t\u00eb rregulluesh\u00ebm nga -15 deri n\u00eb -25 dBm. <\/p>\n

Ishim n\u00eb dyshime n\u00ebse ndoshta sensori i ri Anritsu MA24106A po jepte rezultate t\u00eb gabuara, prandaj kryem nj\u00eb krahasim me nj\u00eb analizator sistematik laboratorik tjet\u00ebr nga General Dynamics, modeli R2670B.
\n\"Krahasim
\n
\nPor jo, ndarja n\u00eb amplitud\u00eb rezultoi t\u00eb ishte krejt e vog\u00ebl, brenda 0.3 dBm.<\/p>\n

Mat\u00ebsi i fuqis\u00eb n\u00eb GenCom 747A, gjithashtu tregoi nj\u00eb tejkalim t\u00eb nivelit nga gjeneratori:<\/p>\n

\"Krahasim
\n
\nPor n\u00eb nivelin 0 dBm, analizatori Arinst SSA-TG R2 p\u00ebr ndonj\u00eb arsye kalonte paksa treguesit e amplitud\u00ebs, sidomos nga burime t\u00eb ndryshme sinjali n\u00eb 0 dBm.
\n\"Krahasim
\n
\nN\u00eb k\u00ebt\u00eb rast, sensori Anritsu MA24106A tregon 0.01 dBm nga kalibruesi Anritsu ML4803A.
\n\"Krahasim
\n
\nT\u00eb rregulloni madh\u00ebsin\u00eb e dob\u00ebsimit t\u00eb attenuator-it n\u00eb ekranin me prekje me gishta, duket se nuk \u00ebsht\u00eb shum\u00eb e p\u00ebrshtatshme, pasi lista me shirit kalon shpejt, ose shpesh kthehet n\u00eb vler\u00ebn maksimale. U tregua m\u00eb e p\u00ebrshtatshme dhe e sakt\u00eb t\u00eb p\u00ebrdoret nj\u00eb stilus i vjet\u00ebr p\u00ebr k\u00ebt\u00eb:
\n\"Krahasim
\n
\nGjat\u00eb shqyrtimit t\u00eb harmonikave t\u00eb sinjalit t\u00eb ul\u00ebt me frekuenc\u00eb 50 MHz, pothuajse n\u00eb t\u00eb gjith\u00eb gam\u00ebn e pun\u00ebs s\u00eb analizuesit (deri n\u00eb 4 GHz), u takua nj\u00eb 'anomali' n\u00eb frekuencat rreth 760 MHz:
\n\"Krahasim
\n
\nMe nj\u00eb gam\u00eb m\u00eb t\u00eb gjer\u00eb n\u00eb frekuenc\u00ebn m\u00eb t\u00eb lart\u00eb (deri n\u00eb 6035 MHz), p\u00ebr t\u00eb pasur nj\u00eb Span sakt\u00ebsisht 6000 MHz, anomalia gjithashtu v\u00ebrehet:
\n\"Krahasim
\n
\nMegjithat\u00eb, ky sinjal i nj\u00ebjt\u00eb, nga i nj\u00ebjti gjenerator i integruar n\u00eb SSA-TG R2, kur u dha n\u00eb nj\u00eb pajisje tjet\u00ebr, nuk ka k\u00ebt\u00eb anomali:
\n\"Krahasim
\n
\nDuke qen\u00eb se n\u00eb nj\u00eb analizues tjet\u00ebr nuk \u00ebsht\u00eb v\u00ebrejtur kjo anomali, do t\u00eb thot\u00eb se problemi nuk \u00ebsht\u00eb te gjeneratori, por te analizuesi i spekt\u00ebr. <\/p>\n

Attenuatori i integruar p\u00ebr dob\u00ebsimin e amplitud\u00ebs s\u00eb gjeneratorit, e dob\u00ebson qart\u00eb me nj\u00eb hap prej 1 dB, t\u00eb gjitha 10 nivelet e tij. K\u00ebtu n\u00eb fund t\u00eb ekranit shihet qart\u00eb nj\u00eb shtegtim i shkall\u00ebzuar n\u00eb shkall\u00ebn e koh\u00ebs, q\u00eb tregon funksionalitetin e attenuator-it:<\/p>\n

\"Krahasim
\n
\nDuke l\u00ebn\u00eb t\u00eb lidhura portin dal\u00ebs t\u00eb gjeneratorit dhe portin hyr\u00ebs t\u00eb analizatorit, e fikja pajisjen. T\u00eb nes\u00ebrmen, kur e ndeza, zbulova nj\u00eb sinjal me harmonika normale n\u00eb nj\u00eb frekuenc\u00eb interesante prej 777,00 MHz:<\/p>\n

\"Krahasim
\n
\nGjat\u00eb k\u00ebsaj kohe, gjeneratori ishte l\u00ebn\u00eb i fikur. Pasi kontrollova menun\u00eb, v\u00ebrtet ai rezultoi i fikur. Teorikisht, nuk duhet t\u00eb kishte asgj\u00eb n\u00eb daljen e gjeneratorit, n\u00ebse ai ishte fikur dit\u00ebn e kaluar. Duhej t\u00eb aktivizoja gjeneratorin n\u00eb ndonj\u00eb frekuenc\u00eb dhe pastaj ta fikja s\u00ebrish. Pas k\u00ebtij veprimi, frekuenca e \u00e7uditshme zhduket dhe nuk shfaqet m\u00eb, p\u00ebrve\u00e7 mund\u00ebsis\u00eb s\u00eb aktivizimit t\u00eb gjithashtu t\u00eb pajisjes. Sigurisht q\u00eb n\u00eb versionin e ardhsh\u00ebm t\u00eb softuerit, prodhuesi do ta zgjidh\u00eb k\u00ebt\u00eb aktivizim t\u00eb vet\u00ebdijsh\u00ebm, n\u00eb daljen e gjeneratorit t\u00eb fikur. Por n\u00ebse kablli midis porteve mungon, nuk v\u00ebrehet aspak q\u00eb di\u00e7ka \u00ebsht\u00eb e gabuar, p\u00ebrve\u00e7 se ndoshta k\u00ebndi i zhurm\u00ebs \u00ebsht\u00eb pak m\u00eb i lart\u00eb. Pas aktivizimit dhe fikjes s\u00eb detyrueshme t\u00eb gjeneratorit, niveli i zhurm\u00ebs b\u00ebhet pak m\u00eb i ul\u00ebt, por n\u00eb nj\u00eb mas\u00eb t\u00eb padukshme. Ky \u00ebsht\u00eb nj\u00eb minus i vog\u00ebl operacional, p\u00ebr zgjidhjen e t\u00eb cilit harxhohen 3 sekonda t\u00eb tep\u00ebrta pas aktivizimit t\u00eb pajisjes.<\/p>\n

Brendimi i Brendit Arinst SSA-TG R2, i paraqitur n\u00eb tre foto t\u00eb grumbulluara n\u00eb gif:<\/p>\n

\"Krahasim
\n
\nKrahasimi i dimensioneve me analizuesin e vjet\u00ebr t\u00eb spektrit Arinst SSA Pro, mbi t\u00eb cilin q\u00ebndron nj\u00eb smartphone, si nj\u00eb ekran:<\/p>\n

\"Krahasim
\n
\nAvantazhet:
\nSi\u00e7 ishte rasti me analizuesin e reflektimit Arinst VR 23-6200, i shqyrtuar k\u00ebtu, analizuesi Arinst SSA-TG R2 \u00ebsht\u00eb n\u00eb t\u00eb nj\u00ebjtin format dhe dimensione, miniatur\u00eb, por nj\u00eb ndihm\u00ebs i mjaftuesh\u00ebm p\u00ebr entuziast\u00ebt e radios. Nuk ka nevoj\u00eb p\u00ebr ekrane t\u00eb jashtme, as n\u00eb kompjuter as n\u00eb smartphone, si modelet e kaluara SSA.
\nNj\u00eb gam\u00eb shum\u00eb e gjer\u00eb e frekuencave, nga 35 deri n\u00eb 6200 MHz, e plot\u00eb dhe pa nd\u00ebrprerje.
\nKoha e sakt\u00eb e autonomis\u00eb nuk \u00ebsht\u00eb hulumtuar, por kapaciteti i bateris\u00eb litium t\u00eb integruar \u00ebsht\u00eb mjaftuesh\u00ebm p\u00ebr nj\u00eb koh\u00eb t\u00eb gjat\u00eb funksionimi autonom.
\nNj\u00eb gabim mjaft i vog\u00ebl n\u00eb matje, p\u00ebr nj\u00eb instrument t\u00eb k\u00ebtij klas\u00eb t\u00eb miniaturizuar. N\u00eb \u00e7do rast, p\u00ebr nivelin amator \u2014 \u00ebsht\u00eb m\u00eb se e mjaftueshme.
\nMb\u00ebshtetet nga prodhuesi, si me p\u00ebrdit\u00ebsime t\u00eb softuer\u00ebve ashtu edhe me riparime fizike, n\u00ebse \u00ebsht\u00eb e nevojshme. Tani \u00ebsht\u00eb gjer\u00ebsisht i disponuesh\u00ebm p\u00ebr blerje, nuk k\u00ebrkohet por si\u00e7 ndodh ndonj\u00ebher\u00eb me prodhues t\u00eb tjer\u00eb. <\/p>\n

D\u00ebshira ka qen\u00eb e dukshme:
\nParaqitje e paqart\u00eb dhe e pa dokumentuar, dalja spontane e gjeneratorit t\u00eb sinjalit me frekuenc\u00eb 777,00 MHz. Me siguri ky keqkuptim do t\u00eb eliminohet me nj\u00eb p\u00ebrdit\u00ebsim t\u00eb ardhsh\u00ebm. Megjithat\u00eb, n\u00ebse e dini k\u00ebt\u00eb ve\u00e7ori, e zgjidhni leht\u00ebsisht brenda 3 sekondave duke e fikur dhe ndezur gjeneratorin e integruar.
\nDuhet pak koh\u00eb p\u00ebr t'u m\u00ebsuar me ekranin, pasi slider-i nuk aktivizon menj\u00ebher\u00eb t\u00eb gjitha butonat virtual\u00eb kur l\u00ebvizin. Mir\u00ebpo, n\u00ebse nuk l\u00ebvizni slider-at dhe klikoni menj\u00ebher\u00eb n\u00eb pozitat p\u00ebrkat\u00ebse, gjith\u00e7ka funksionon sakt\u00ebsisht. Kjo nuk \u00ebsht\u00eb kaq e pap\u00ebrshtatshme, por m\u00eb shum\u00eb nj\u00eb 've\u00e7ori' e kontrolleve t\u00eb vizatuara, konkretisht n\u00eb menun\u00eb e gjeneratorit dhe sliderin p\u00ebr rregullimin e attenuatorit.
\n Kur lidhet me Bluetooth, analizatori duket se lidhet me telefonin e men\u00e7ur, por traku i grafikut t\u00eb A\u00c7H nuk shfaqet, si p\u00ebr shembull n\u00eb SSA Pro. Gjat\u00eb lidhjes jan\u00eb respektuar plot\u00ebsisht t\u00eb gjitha k\u00ebrkesat e udh\u00ebzimeve, t\u00eb p\u00ebrshkruara n\u00eb seksionin 8 t\u00eb udh\u00ebzimeve t\u00eb fabrik\u00ebs.
\nKisha mendimi se n\u00ebse fjal\u00ebkalimi pranohet dhe n\u00eb ekranin e smartphone-it shfaqet konfirmimi i lidhjes, ndoshta kjo funksion \u00ebsht\u00eb vet\u00ebm p\u00ebr p\u00ebrmir\u00ebsimin e programit p\u00ebrmes smartphone-it.
\nPor jo.
\nN\u00eb pik\u00ebn e udh\u00ebzimit 8.2.6 thuhet qart\u00eb:
\n8.2.6. Do t\u00eb ndodhi lidhja e pajisjes me tabletin\/smartphone-in, n\u00eb ekran do t\u00eb shfaqet grafik i spektrit t\u00eb sinjalit dhe nj\u00eb mesazh informativ p\u00ebr lidhjen me pajisjen ConnectedtoARINST_SSA, si\u00e7 tregohet n\u00eb figur\u00ebn 28. (c)
\nPo, konfirmimi shfaqet, por trek\u00ebt \u2014 nuk ka.
\nE kam lidhur shum\u00eb her\u00eb, gjithmon\u00eb trek\u00ebt nuk shfaqeshin. Por me SSA Pro t\u00eb vjet\u00ebr, ndodhte menj\u00ebher\u00eb.
\nGjithashtu, nga disavantazhet e asaj \u2018universaliteti\u2019 t\u00eb p\u00ebrfolur, p\u00ebr shkak t\u00eb kufizimeve n\u00eb skajet e poshtme t\u00eb frekuencave t\u00eb pun\u00ebs, nuk i p\u00ebrshtaten p\u00ebr radioamator\u00ebt e val\u00ebve t\u00eb shkurtra. Megjithat\u00eb, p\u00ebr RC FPV, plot\u00ebsisht dhe t\u00ebr\u00ebsisht p\u00ebrmbushin k\u00ebrkesat e entuziast\u00ebve dhe profesionist\u00ebve, madje edhe tej, p\u00ebrtej pr expectations.<\/p>\n

Konkluzione:
\nN\u00eb t\u00ebr\u00ebsi, t\u00eb dy pajisjet lan\u00eb nj\u00eb p\u00ebrshtypje shum\u00eb pozitive, pasi n\u00eb thelb ofrojn\u00eb nj\u00eb kompleks mat\u00ebs t\u00eb kompletuar, p\u00ebr \u00e7do rast madje edhe p\u00ebr nivelin e avancuar t\u00eb radioamator\u00ebve. Politika e \u00e7mimeve k\u00ebtu nuk shqyrtohet, por megjithat\u00eb ajo \u00ebsht\u00eb duksh\u00ebm m\u00eb e ul\u00ebt se analog\u00ebt e tjer\u00eb m\u00eb t\u00eb af\u00ebrt n\u00eb treg n\u00eb nj\u00eb gam\u00eb kaq t\u00eb gjer\u00eb dhe t\u00eb vazhdueshme frekuencash, gj\u00eb q\u00eb nuk mund t\u00eb mos g\u00ebzoj\u00eb.
\nQ\u00ebllimi i k\u00ebtij shqyrtimi ishte thjesht t\u00eb krahasohej k\u00ebto pajisje me teknologjin\u00eb m\u00eb t\u00eb avancuar mat\u00ebse dhe t'u ofronte lexuesve fotografit\u00eb e dokumentuara t\u00eb shfaqjeve, p\u00ebr t\u00eb formuar nj\u00eb opinion t\u00eb tyre dhe p\u00ebr t\u00eb marr\u00eb nj\u00eb vendim t\u00eb vet\u00ebdijsh\u00ebm n\u00eb lidhje me mund\u00ebsin\u00eb e blerjes. Asnj\u00ebher\u00eb nuk u synua ndonj\u00eb q\u00ebllim reklamimi. Vet\u00ebm nj\u00eb vler\u00ebsim i jasht\u00ebm dhe publikimi i rezultateve t\u00eb v\u00ebzhgimeve.
\n
Burimi: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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Ka lindur interes q\u00eb t\u00eb kuptohet n\u00ebse k\u00ebto jan\u00eb s\u00ebrish \u00abt\u00eb ndihm\u00ebs\u00bb portab\u00ebl (lojra), ose n\u00ebse jan\u00eb v\u00ebrtet aparatura q\u00eb meritojn\u00eb v\u00ebmendje, ashtu si\u00e7 i pozicionon prodhuesi:","canonical_url":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/sravnitelnyj-obzor-portativnyh-svch-priborov-arinst-vs-anritsu","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sq_AL","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0421\u0440\u0430\u0432\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043e\u0431\u0437\u043e\u0440 \u043f\u043e\u0440\u0442\u0430\u0442\u0438\u0432\u043d\u044b\u0445 \u0421\u0412\u0427 \u043f\u0440\u0438\u0431\u043e\u0440\u043e\u0432 Arinst vs Anritsu | ProHoster","og:description":"\u041d\u0430 \u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u044b\u0439 \u0442\u0435\u0441\u0442-\u043e\u0431\u0437\u043e\u0440 \u043f\u043e\u0441\u0442\u0443\u043f\u0438\u043b\u0430 \u043f\u0430\u0440\u0430 \u043f\u0440\u0438\u0431\u043e\u0440\u043e\u0432 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u043e\u0433\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430 \u00abKroks\u00bb. \u042d\u0442\u043e \u0434\u043e\u0432\u043e\u043b\u044c\u043d\u043e \u043c\u0438\u043d\u0438\u0430\u0442\u044e\u0440\u043d\u044b\u0435 \u0440\u0430\u0434\u0438\u043e\u0447\u0430\u0441\u0442\u043e\u0442\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u0440\u0438\u0442\u0435\u043b\u0438, \u0430 \u0438\u043c\u0435\u043d\u043d\u043e: 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