ORTEC 473 - Page 2

ORTEC 473 CONSTANT FRACTION DISCRIMINATOR
Manual Change Sheet
September 24, 1975
KCN 473-02
On .scTu-m.it i c 473-01U1-SI , rhangi^ tiic (k'scriptlon Cor Q2 and Q3 from
MI'S23()9 (I'/N 47H45) To MI'SC'Fil (I'/N 480 39) Change the flagged note
from 4 to () and add note 6: Selecteil - ORTEC J'art Number 48039 - Violi't.
October 28, 1975
ECN 473-3T
On schematic 473-0101-Sl, change the values of the following parts:
Change C63 from 1000 pF to 27 pF.
Change R123 from 2K to 1.5K.