Yog hais tias lub tswv yim ntawm lub module tau teem rau "ib txwm qhib kev tshuaj xyuas kab" lub xeev cov tswv yim, qhov kawg ntawm lub module input kab (nyob deb ntawm lub module davhlau ya nyob twg) yuav tsum tau txuas nyob rau hauv parallel nrog ib tug 4.7kΩ termination resistor, thiab yog hais tias tus module input. Lub davhlau ya nyob twg yog teem rau "ib txwm kaw kab tshuaj xyuas" lub xeev, qhov kawg ntawm cov tswv yim kab ntawm lub module input kab (tawm ntawm lub module davhlau ya nyob twg) yuav tsum txuas nrog hauv series nrog 4.7kΩ termination resistor. Thaum lub module yog ib tug active tso zis, ib tug 4.7kΩ termination resistor yuav tsum tau kev cob cog rua nyob rau hauv parallel ntawm lub active tso zis thiab ib tug IN4007 diode nyob rau hauv series.