JHA's 19 ”3U yerekana amashusho ya OM1918V yagenewe kwibanda kumurongo wa OM620 1 ~ 8 umuyoboro wamashusho ya optique yakira.Gukina-no gucomeka igishushanyo gitanga ubworoherane mugushiraho.Irashobora gufata ibice 18 byamakarita 1 ~ 4-ch, cyangwa ibice 9 byamakarita 8-ch.