The main purpose of this test is to verify the resistance to electrostatic discharge (ESD) caused by the proximity or contact of an object or person or device. Chinhu kana munhu anogona kuunganidza magetsi emagetsi mukati memagetsi akakwirira kupfuura 15kv. Chiitiko chinoratidza kuti kukundikana kusingatsanangurike uye kukuvara zvinokonzereswa neESD. Nekuburitsa kubva kune ESD simulator kuenda kumusoro uye padyo neEUT, iyo yekuyedza chombo (EUT) inotora ESD chiitiko. Iyo nhanho yekuomarara yekuburitswa inotsanangurwa zvakajeka mune zvigadzirwa zviyero uye EMC bvunzo zvirongwa zvakagadzirwa nemugadziri. EUT inoongorora kutadza kushanda kana kupindirwa mune dzese nzira dzekushanda. Kupasa / kutadza maitiro kunofanirwa kutsanangurwa muEEMC bvunzo chirongwa uye kwakatemwa nemugadziri wechigadzirwa.

PCB transient conductivity resistance

Chinangwa chikuru chemuedzo uyu ndechekusimbisa kuramba kweEUT kumishure uye kwenguva pfupi yekuvhunduka nenguva inokurumidza inomuka inogona kugadzirwa nemitutu inokanganisa kana vanobatika. Iyo inokurumidza kusimuka nguva uye kudzokorora chimiro cheiyi bvunzo yekupomba kunoguma mune aya makwiriki achipinda zviri nyore EUT maseketi uye anogona kukanganisa maitiro eEUT. Transients inoshanda yakanangana neiyo huru magetsi magetsi uye iyo mvumo yetambo yechiratidzo. Mune mamwe mapcb immune immunity, iyo EUT inofanirwa kuongororwa pasipoti / kukundikana hwaro uchishandisa yakajairika mashandiro ekugadzirisa.

Resistance of PCB to electromagnetic radiation

Chinangwa chikuru chemuedzo uyu ndechekuongorora chigadzirwa chePCB inopesana nekupindirana nemasairesi, maTransceivers, nharembozha dzeGSM / AMPS, uye akasiyana maseru emagetsi anowanikwa kubva kumagetsi emagetsi emagetsi. Kana iyo system isina kudzivirirwa, magetsi emagetsi anokwanisa kubatanidzwa kune tambo yekushandura uye kupinda mudunhu nenzira yekufambisa; Kana iyo inogona kuve yakabatanidzwa zvakananga kune wiring yedunhu rakadhindwa. When the amplitude of the rf electromagnetic field is large enough, the induced voltage and demodulated carrier can affect the normal operation of the device.

PCB radiation resistance Test run This test run is usually the longest and most difficult, requiring very expensive equipment and considerable experience. In contrast to other PCB immunity tests, success/failure criteria defined by the manufacturer and a written test plan must be sent to the test room. Kana uchidyisa EUT mundima yemwaranzi, iyo EUT inofanirwa kumisikidzwa mune yakajairika mashandiro uye yakanyanyisa mamiriro.

Zvakajairika mashandiro anofanirwa kumisikidzwa mukamuri yekuyedza kana EUT yakafumurwa kumatanho ekupindirana minda ine frequency ayo anodarika anodikanwa 80MHz kusvika 1GHz frequency renji. Some PCB anti-interference standards start at 27MHz. Kuomarara kweyakaenzana iyi inowanzoda pcb yekudzivirira mazinga e1V / m, 3V / m, kana 10V / m. Zvisinei, zvigadziridzo zvemidziyo zvinogona kuve nezvinodiwa zvadzo zve “dambudziko (kupindirana) mafambiro”. The appropriate PCB radiation resistance level of the product is of interest to the manufacturer.

Yakabatana munda zvinodikanwa Iyo nyowani PCB kupindira kuramba mwero EN50082-1: 1997 inoreva IEC / EN61000-4-3. IEC / EN61000-4-3 inoda yakabatana bvunzo nharaunda zvichienderana nesampuli sampuli. The test environment was realized in an anechoic room with tiles arranged with ferrite absorbers to block reflection and resonance in order to establish a unified test site indoors. Izvi zvinokunda kamwe kamwe uye kazhinji kacho kusingadzokororwke bvunzo zvikanganiso zvinokonzerwa nekuratidzira uye munda gradients mune echinyakare asina kukamurwa makamuri. (Kamuri semi-anechoic zvakare inzvimbo yakanaka yekuyera kubuda kwemwaranzi munzvimbo isina kujairika yemukati inoda kurongeka).

Kuvakwa kwema semi-anechoic makamuri eRF absorbers kunofanira kurongwa pamadziro uye masiling emakamuri ean-anechoic. Iwo ma mechanics neRF dhizaini dhizaini inofanirwa kugara inorema ferrite mataira anonamira padenga remukamuri. Ferrite zvidhinha zvinogara pane dielectric zvinhu uye zvakasungirirwa kumusoro kwekamuri. Mune imwe nzvimbo isina kukamurwa, kuratidzwa kubva padenga resimbi kunokonzeresa masaisai uye amire mafungu, ayo anogadzira makwiriro uye zvidimbu musimba renzvimbo yekuyedza. Iyo munda gradient mune yakajairwa isina kukamurwa kamuri inogona kuve makumi maviri kusvika 20dB, uye izvi zvinokonzeresa muyedzo muyedzo kuti iite kunge inokundikana kamwe kamwe mundima yakadzika kwazvo. Iyo resonance yekamuri inoguma yakadzika kwazvo bvunzo kudzokorora uye yakakwira mwero we “kupidigura”. (Izvi zvinogona kukonzeresa pamusoro-dhizaini yechigadzirwa.) Iyo nyowani pcb inopesana nekupindirana standard IEC1000-4-3, inoda izvo zvakafanana munda zvinodiwa, yakagadzirisa izvi zvakakomba kushomeka.

Iyo Hardware nesoftware inodiwa kugadzira iyo bvunzo saiti yaida yepamusoro-simba Broadband RF gudzazwi kutyaira iyo Broadband ichiendesa antenna mune iyo frequency renji inopfuura 26MHz kuenda ku2GHz, yaive mamaira matatu kubva pachigadzirwa chiri kuyedzwa. Fully automated testing and calibration under software control provides greater flexibility for testing and full control of all key parameters such as scan rate, frequency pause time, modulation and field strength. Software hoko dzinobvumidza kuwiriranisa kwekutarisa uye kukurudzira kweEUT mashandiro. Inopindirana maficha anodikanwa mukuyedza chaiko kugonesa chaiyo-nguva shanduko muEMC yekuyedza software uye EUT parameter. Iyi yekushandisa yekushandisa ficha inobvumira rese data kuti rinyorwe nekukurumidza kuti riite kuongorora uye kupatsanura kweEUT EMC kuita.

Mapiramidhi anopinza echinyakare mapiramidhi (akabatana) anoshanda anoshanda, kunyangwe saizi yakakura yepiramidhi inoita kuti zvikone kuyedza madiki anoshandiswa munzvimbo. Pamatanho epasi e80MHz, kureba kwepiramidhi kunotora kunofanira kudzikiswa kusvika pa100cm, uye kushanda panzvimbo dzakaderera dze26MHz, kureba kwepiramidhi kunotora kunofanira kunge kuri kudarika 2m. Pyramid absorbers zvakare ine zvayakaipira. Izvo zvisina kusimba, zvinokuvadzwa nyore nyore nekurovera, uye zvinopisa. Izvo zvakare hazvishandiswe kushandisa izvi zvinopinda pafloor yekamuri. Nekuda kwe kudziya kwepiramidhi rinobata, simba remunda rakakura kupfuura 200V / m kwenguva yakati rebei rinoisa njodzi huru yemoto.

Ferrite tile inobata

Ferrite mataira anoshanda munzvimbo, asi anowedzera huremu hwakakosha padenga remadziro, nemikova yemukati, saka chimiro chemuchina chekamuri chinove chakakosha. Ivo vanoshanda mushe pakuderera kwakaderera, asi vanova asinganetsi pane mafrifti ari pamusoro pe1GHz. Matera eFerrite akanyanya (100mm × 100mm × 6mm gobvu) uye anogona kumira musimba masimba anopfuura 1000V / m pasina njodzi yemoto.

Dambudziko muPCB radiation radiation kuramba kuyedzwa Nekuti iyo yekubatsira michina inoshandiswa kushandisa iyo EUT inopa inosimudzira mamaki ekuongorora ayo kuita mashandiro, inofanirwa pachayo kuve PCB-inopesana neiyi inonzwisisika munda, inova inhereti yekuzvarwa kuomesa mukumhanyisa radiation radiation kunzwa bvunzo. Izvi zvinowanzo kutungamira kumatambudziko, kunyanya kana michina yekubatsira iri yakaoma uye inoda tambo zhinji uye maficha kuEUT ayo anopetwa kuburikidza nekamuri yekuyedza yekuyedza. Tambo dzese dzinomhanya kuburikidza neyekuyedza kamuri dzinofanirwa kudzivirirwa uye / kana kusefa kuitira kuti iyo bvunzo munda idzivirirwe kubva kwavari kudzivirira kudzikisira kuita kwekudzivirira kweiyo bvunzo imba. Kukwikwidzana mukuita kwekudzivirira kweye yekuyedza kamuri kunoguma nekukanganisa kusingazivikanwe kwenzvimbo yekuyedza munzvimbo yakatenderedza, izvo zvinogona kukonzeresa kune vashandisi veiyo spectrum. Hazvisi zvinogara zvichikwanisika kushandisa maRF mafirita e data kana mitsara yemasaini, senge panenge paine yakawanda data kana kana paine-yekumhanyisa data zvinongedzo zvinoshandiswa.