Tektronix 5440 Instruction Manual page 91

OPTION 78
Ρ 11 PHOS PH O R
Option 78-5440
The purpose of OPTION 78 is to provide α catho
d
e-ray tube with Ρ 11
p
hosphor, which is
b est suited for
waveform photography. The Tektronix part
n umber for the tube is listed in
t
he
R
eplaceable
E lectrical Parts
(see V
400) .
( ω
S
EP 1978
Option 78,
p
age 1