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3ABP11

Flat-face dual-beam oscilloscope CRT with independent electron guns, post-acceleration, high deflection sensitivity, and tight beam-tracking tolerances. Its P11 screen gives blue fluorescence with short persistence.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 1.2 A

Description

The Du Mont 3ABP11 is a flat-face dual-beam CRT with independent electron guns, post-acceleration, high deflection sensitivity, and tight tracking tolerances. This variant uses a P11 screen with blue fluorescence and short persistence.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 1.2 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Representative of two equivalent electron-beam display systems.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1960 Du Mont

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

Heater Voltage
6.3 V
Heater Current
1.2 A
Focusing Method
Electrostatic text
Deflection Method
Electrostatic text
Phosphor
P11 text
Fluorescence
Blue text
Persistence
Short text
Post-Acceleration
Present text