C/o plug-in fixture, extender board 067-1071-000, fiber optic cables 175-4573-01 and 175-9351; signal levels are 50, 60 and 70db, add'l 9 signal levels available; log amp circuit provided in 10db steps from 20 to 100db; meets mil-t-28800c, type 3, class 6, stylee specification except for non-operating temp of m25 to p75 degrees c
