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DH1397

Philips DH-series cathode-ray instrument tube designed for oscillographic and measurement display, with manufacturer-defined high-performance focusing, deflection, screen, and accelerating characteristics for type DH1397.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 550 mA

Description

Precision direct-view oscilloscope CRT with flat face, two stages of distributed post-deflection acceleration, and side deflection contacts.

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: 550 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-specific optical, focusing, deflection, accelerating-voltage, scan, and capacitance data are retained in TUBE_SECTION_PARAMETER because the locked promoted fields primarily target conventional electrode sections.

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

Construction

Focusing
Electrostatic
OscilloscopeCRT
Deflection
Double electrostatic
OscilloscopeCRT
Screen fluorescence
Green to blue
OscilloscopeCRT
Screen persistence
Short
OscilloscopeCRT

Other

Heater voltage
6.3 V
OscilloscopeCRT
Heater current
550 mA
OscilloscopeCRT
Useful D1 scan from center
30 mm
OscilloscopeCRT
Useful D2 scan from center
47.5 mm
OscilloscopeCRT
Post accelerator stage voltage
10000 V
OscilloscopeCRT
Second post-accelerator voltage
4000 V
OscilloscopeCRT
Deflection shield voltage
1800 V
OscilloscopeCRT
Accelerator voltage
1400 V
OscilloscopeCRT
Focusing voltage minimum
440 V
OscilloscopeCRT
Focusing voltage maximum
560 V
OscilloscopeCRT
Grid No.1 extinction voltage minimum
45 V
OscilloscopeCRT
Grid No.1 extinction voltage maximum
90 V
OscilloscopeCRT