Line 1 level adjust rx lam back, Lam1-s 7sec -10dbm dur lvl s/u back, Lam1-s duration 7se 7sec dwn up back – Telex C-2002 User Manual
Page 22: Mute1 level = -10db off edit back, 1 menu 1 - line level settings, 1 rx input level screen, 2 lam programming screen, 3 mute button level screen