Tektronix 1740A/1750A - Manual (Page 21)

Options
1-6
1740A/1750A Series Waveform/Vector Monitor User Manual
CRT Options
The standard instrument is shipped with a P31 (green)
phosphor CRT installed. If Option 74 is ordered, the instru-
ment is shipped with a P4 (white) phosphor CRT installed.
The Option 74 CRT part numbers are given in the service
manual, at the end of the Replaceable Electrical Parts List.