Note
Service, Aug 1938, p. 486
The Model UF Cathode-Ray Oscilloscope employs the standard three-inch cathode-ray tube (type unspecified, but possibly an RCA 906), and provides all necessary power from a self-contained rectifier and filter system. The built-in 60 Hz sweep allows study of Lissajou's figures for analyzing voltages and currents.
The form factor is similar to General Radio’s first scope, released in 1931. The cathode-ray tube is housed in a separate hood mounted on a swivel atop of the power unit. Thus it is shielded from the power unit and may be adjusted to any angle for convenient observation or removed and placed at a distance from the power unit.
Coils for magnetic deflection are available for applications requiring this operation. Two types of linear-sweep units are also available; one provides a time axis for visual curve plotting at frequencies from 20 to 200,000 Hz. This unit incorporates a frequency interlock circuit that entirely eliminates drift of pattern. All units operate entirely from 110 volts AC, and are available for either table or rack mounting.