An osc ill osco pe defl ec to r is de sc ribed , which has a ca lc ulabl e t ra ns fe r fun c tion. Th e de fl ecto r is analyze d , le ading to it s tran sfer fun c tion , in te rm s of th e comp lex fre qu e ncy vari a bl es. A prac ti ca l s trip lin e de fl ec tor, usa ble as a pul se s tandard, is des igned ; a nd it s freq ue ncy response, se ns iti vi t y, bandwidth, ri se tim e, s te p fun cti on, a nd impul se response a re calcu la ted. Th e pre di c ted d efl ec tio n is down to 70 perce nt of it s doc va lu e a t 2.82 GHz , while th e s te p-res ponse 10 to 90 pe rce nt ri se tim e is 148 pi coseco nd s. The effec ts ' of a drift space on the oscillosco pi c d is play is a lso di sc ussed. Res ult s are co mpared with a we ll-kn o wn ex press ion for the parallel plate de fl ec tor s tru c ture.Key Words : De fl ec tor, drift s pace, osc illosco pe, s trip-line , s ta ndard , transfe r fun c tio n.