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Specialized - Cathode Ray ·CathodeRay

DHM1093

Philips DHM-series cathode-ray instrument tube for precision measurement display, with manufacturer-defined electron-optical, screen, focusing, and deflection characteristics for type DHM1093.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 550 mA

Description

Dual-trace post-deflection-acceleration cathode-ray oscilloscope tube. The source provides CRT heater, focusing/deflection, capacitance, scan/sensitivity and operating data where published.

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.

Electrostatic CRT section; published focusing, deflection, capacitance, scan and operating data retained in parameter rows.

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

Capacitance

  • Capacitances

    3.3 pF

    Capacitances 3.3 pF CD1 ' = 3.3 pF

Other

  • Deflection factors for V

    1 to 18 V

    Deflection factors for V85/V84= 2 D1 - 18 V/cm 1)

Characteristic

  • j) With Vg

    -1 V

    j) With Vg3 set for focus and Vg1 = -1V

  • Post-deflection acceleration present

    1

    Source explicitly describes post-deflection acceleration

  • Independent beam/trace systems

    2

    Dual-trace/double-gun source description

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Useful screen diameter

    90 mm

  • Useful vertical scan

    70 mm

    DualTrace