Lub pob nyem qeeb mentshis yuav siv tau los hloov cov tsoos qeeb mentshis tshuab hluav taws xob ntawm lub analog tsis kam potentiometer. Cov ntsuas qeeb mentshis no feem ntau siv nyob rau hauv tib neeg-tshuab interface ntawm lub vaj huam sib luag pem hauv ntej ntawm lub ntsuas thiab cov khoom siv hluav taws xob tswj pom. Lub qeeb mentshis hloov siv orthogonal optical encoders hloov qhov analog potentiometers. Cov khoom siv hluav taws xob ntshiab no, cov ntsuas khoom ua lub cev sib luag yog qhov zoo sib xws rau cov tsoos lossis resistive potentiometers, tab sis cov qauv sab hauv ntawm cov ntsuas hluav taws xob no yog ua tiav digital thiab siv cov thev naus laus zis. Zoo ib yam li cov tsoos nce cov teeb meem ntau ntxiv, muaj ob lub cim orthogonal tso tawm suab (channel A thiab channel B), uas tuaj yeem txuas ncaj qha rau daim encoder ua nti.
Qeeb mentshis ntiv taw yog qhov hloov uas tswj cov chwv sib txuas qhib thiab kaw los ntawm tig tus kov. Kuj tseem muaj ob daim ntawv tshaj tawm ntawm cov kev sib hloov kev sib hloov, uas yog chav tsev unipolar qauv thiab ntau tus ncej ntau txoj haujlwm. Ib leeg-ncej chav tsev cov kab ntsig sib dhos feem ntau yog siv ua ke nrog cov kab ua teb potentiometers hauv kev siv, thaum ntau tus ncej thiab ntau txoj kab ntsuas viav vias feem ntau siv rau kev hloov ua haujlwm ntawm lub xeev kev ua haujlwm.
Hauv qee qhov ntau, tus nqi tsis kam hloov, thiab tom qab ntawd muaj tus hu rau lub pob nyem. Nov yog qhov hloov ntawm lub TV qub thiab xov tooj cua. Muaj ob peb lub zog rau tus kiv cua. Ob peb co ntawm cov xov hlau ua rau txuas nrog lub kiv cua winding. Los ntawm kev hloov tus naj npawb ntawm coil lem Hloov qhov ceev, lub hauv paus ntsiab lus zoo ib yam li lub zog ntawm potentiometer.