This exquisite electrostatically deflected oscilloscope tube was designed for small instrument use. The trace was green of medium persistence.
For operating details See the attached data sheet.
The close-up of the electron gun shows the cathode assembly on the left, the electron lens for focus in the centre and at the right side the Y deflection plates can be seen.
The screen is 58 x 52 mm, and excluding the base pins, is 166 mm long.
Reference: Data-sheet. Type D7/200GH was first introduced in 1969.
Absolute Maximum Operating Conditions¶
PDF scanned from an original document held by the museum
Updated August 12, 2016. shape:end.window construction:all.glass type:cathode-ray.tube age:1960.1975 base:b13b heater:6.3v pins:13 pin:1.h pin:2.h pin:3.g1 pin:4.a pin:5.y1 pin:6.y2 pin:7.a(3) pin:8.a(4) pin:9.x1 pin:10.ic pin:11.x2 pin:12.ic pin:13.ic