Bambanci tsakanin incoder na gani (ma'aunin grating) da encoder na maganadisu (ma'aunin maganadisu).

1.Encoder na gani(Grating Scale):

Ka'ida:
Yana aiki bisa ka'idodin gani. Yawanci ya ƙunshi sandunan grating na zahiri, kuma lokacin da haske ya wuce ta waɗannan sanduna, yana haifar da siginonin hoto. Ana auna matsayi ta hanyar gano canje-canje a cikin waɗannan sigina.

Aiki:
Thena gani encoderyana fitar da haske, kuma yayin da yake wucewa ta sandunan grating, mai karɓa yana gano canje-canje a cikin hasken. Yin nazarin tsarin waɗannan canje-canje yana ba da damar ƙayyade matsayi.

Encoder Magnetic (Scale Magnetic):

Ka'ida:
Yana amfani da kayan maganadisu da firikwensin. Yawanci ya haɗa da igiyoyin maganadisu, kuma yayin da shugaban maganadisu ke motsawa tare da waɗannan tsiri, yana haifar da canje-canje a cikin filin maganadisu, waɗanda aka gano don auna matsayi.

Aiki:
Shugaban Magnetic encoder na maganadisu yana jin canje-canje a cikin filin maganadisu, kuma wannan canjin yana canzawa zuwa siginar lantarki. Yin nazarin waɗannan sigina yana ba da damar ƙayyade matsayi.

Lokacin zabar tsakanin na'urorin gani da maganadisu, abubuwa kamar yanayin muhalli, madaidaicin buƙatun, da farashi galibi ana la'akari da su.Encoderssun dace da mahalli mai tsabta, yayin da masu rikodin maganadisu ba su da kulawa ga ƙura da gurɓatawa. Bugu da ƙari, na'urorin gani na gani na iya zama mafi dacewa da aikace-aikacen da ke buƙatar ma'auni mai tsayi.