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Kuyesa kwa Impedance Control kwa PCB Board

  • 2021-12-08 17:07:18
Kuyesa kwa TDR pakadali pano kumagwiritsidwa ntchito kwambiri pa PCB opanga ma batri circuit board ( matabwa ozungulira osindikizidwa ) mizere yowonetsera ndi kuyesa kwa chipangizo cha impedance.

Pali zifukwa zambiri zomwe zimakhudza kulondola kwa kuyesa kwa TDR, makamaka kuwonetsera, kuwerengetsa, kusankha kuwerenga, ndi zina zotero. Kusinkhasinkha kudzachititsa kuti pakhale kusiyana kwakukulu pamtengo woyesera wa mzere wamfupi wa chizindikiro cha PCB, makamaka pamene TIP (probe) imagwiritsidwa ntchito poyesa.Mwachiwonekere, chifukwa TIP ndi malo olumikizirana ndi ma siginecha zipangitsa kuti kutha kwapang'onopang'ono kupangike, kupangitsa kuti kuwunikira kuchitike, ndikupangitsa kuti kupindika kwa mzere wa siginecha ya PCB kusinthasintha pafupi ndi mainchesi atatu kapena anayi.

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Monga mizere yongopeka yokha, mizere yosiyanitsa yosiyana, zolumikizira, ndi zina zotere. Mayesero amtunduwu ali ndi chofunikira, chomwe ndi kuphatikiza ndi mikhalidwe yeniyeni yogwiritsira ntchito.Mwachitsanzo, kukwera kwenikweni kwa mzere wa siginecha wa mzere wa siginecha ndi pafupifupi 300ps, ndiye kukwera m'mphepete kwa chizindikiro cha TDR chotulutsa mpweya kuyenera kukhazikitsidwa molingana ndi 300ps m'malo mwa 30ps.Kumanzere ndi kumanja kukwera m'mphepete, apo ayi zotsatira zoyeserera zitha kukhala zosiyana kwambiri ndi momwe mungagwiritsire ntchito.

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