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Specialized - Cathode Ray ·CathodeRay

D1012GM

Philips flat-face oscilloscope CRT with helical post-deflection acceleration. Electrostatic focusing and deflection combine with added final acceleration for a bright, accurately controlled waveform trace.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 300 mA

Description

D1012GM is a Philips flat-face oscilloscope CRT with helical post-deflection acceleration. The supplied datasheet provides electrostatic-deflection, focusing, acceleration, screen and operating characteristics.

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
300 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.

Electrostatic deflection, accelerator/focus/grid voltages, sensitivities and limiting values reviewed.

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

1963 Philips Electron Tubes Handbook V2

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

  • Screen fluorescence

    Purplish blue

    Screen

  • Screen phosphorescence

    Yellowish green

    Screen

  • Screen persistence

    Long

    Screen

  • Useful screen diameter

    90 mm

    DisplayGeometry

  • Useful vertical scan

    60 mm

    DisplayGeometry

  • Horizontal deflection factor

    31 V/cm

    Maximum

  • Vertical deflection factor

    11.2 V/cm

    Maximum

Other

  • Post-accelerator voltage

    4000 V

    OscilloscopeCRT

  • Isolation-shield voltage

    1000 ± 100 V

    OscilloscopeCRT

  • Second-accelerator voltage

    1000 ± 50 V

    OscilloscopeCRT

  • Focusing-electrode voltage

    20 to 200 V

    OscilloscopeCRT

  • First-accelerator voltage

    1000 V

    OscilloscopeCRT

  • Grid No.1 voltage

    -25 to -67 V

    OscilloscopeCRT

  • Maximum deflection-linearity deviation

    2 %

    OscilloscopeCRT

  • Maximum pattern distortion

    2 %

    OscilloscopeCRT