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4XP11

Ultra-high-resolution magnetic-focus, magnetic-deflection CRT with a small neck and P11 screen, designed for airborne and photo-oscillographic applications. Its anode capability reaches approximately 22 kV.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: B12C
Base pins: -
Nominal heater: 6.3 V / 600 mA

Description

Ultra-high-resolution magnetic-focus, magnetic-deflection CRT with small neck for airborne/photo-oscillographic applications.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B12C
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 600 mA
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

Max plate voltage: 22000 V

Published source ratings and characteristics promoted where applicable; additional electrical and operating data retained as parameters.

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

1964 RMA EIA

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Application

Application
Cathode-ray display / television / instrumentation

Characteristics

Focusing method
Magnetic
Deflection method
Magnetic
Deflection angle
50 deg
Resolution capability
2600 lines/in
Line width
0.0004 in
Spot size
0.0007 in

Capacitance

Grid1-to-all capacitance
6 pF
Cathode-to-all capacitance
6 pF

Other

Typical anode voltage
10000 V
Grid1 visual-cutoff range
-20 to -40 V
Anode voltage minimum
8000 V
Anode voltage maximum
22000 V
Focus-coil current
50 mA