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Tube Tinker — Electron Tube Database
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Specialized - Cathode Ray ·CathodeRay

5ATP1

Five-inch high-voltage oscilloscope CRT with electrostatic focusing and deflection, designed for bright precision oscillographic display. Its elevated accelerating potential improves trace brightness and definition.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B14A
Base pins
-
Nominal heater
6.3 V / 600 mA

Description

High-voltage electrostatic-focus and electrostatic-deflection cathode-ray tube for bright precision oscillographic display.

Socket description

Large readout/Nixie 14-contact base, 44.5 mm pin circle

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B14A
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

No fixed ratings are recorded for this section.

CRT electron-gun/display section; CRT-specific ratings and operating data are stored 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

1960 Du Mont

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    1 code

    Electrostatic

  • Deflection method

    1 code

    Electrostatic

  • Deflection factor D1-D2

    -

    Published range 94 to 116 V/in

  • Deflection factor D3-D4

    -

    Published range 34 to 42 V/in

  • Minimum useful screen

    41 in

Other

  • Accelerator voltage maximum

    10000 V

  • Accelerator voltage

    6000 V

  • Grid No. 1 voltage

    -

    Published range -56 to -34 V

  • Grid No. 1 negative bias maximum

    200 V

Capacitance

  • Cathode to all other electrodes

    6.1 pF

    Approximate or first published bound

  • Grid No. 1 to all other electrodes

    11 pF

    Approximate or first published bound