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5GP1

Five-inch P1 cathode-ray instrument tube for oscillograph or measurement display, with manufacturer-specified focusing, deflection, accelerating voltages, and phosphor characteristics for precision waveform presentation.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: B11A
Base pins: -
Nominal heater: 6.3 V / 600 mA

Description

Five-inch P1 green-screen cathode-ray tube with electrostatic focus and deflection.

Socket description

Magnal 11-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B11A
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: 2000 V

Published ratings/characteristics promoted from supplied source; additional conditions retained in parameter table.

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

Characteristic

Heater Voltage
6.3 V
Heater Current
600 mA
FocusingMethod
Electrostatic
DeflectionMethod
Electrostatic
Phosphor
P1
GridToAllCapacitance
9 pF
DeflectionPlateYPairCapacitance
2.4 pF
DeflectionPlateXPairCapacitance
1 pF

Other

Anode2VoltageMaximum
2000 V
Anode1VoltageMaximum
1000 V
Anode2Voltage
2000 V
Anode1VoltageForFocus
425 V
GridVoltageForVisualCutoff
-40 V