Data set 01
1960 Du Mont
Published operating points and test conditions from this source.
Cathode Ray
Characteristic
Heater Voltage
6.3 V
Heater Current
600 mA
DeflectionMethod
Electrostatic
FocusingMethod
Electrostatic
ScreenDiagonal
7 in
Specialized - Cathode Ray ·CathodeRay
Seven-inch P1 cathode-ray instrument tube for oscillographic or measurement display, with manufacturer-specified focusing, deflection, accelerating-voltage, and phosphor characteristics.
Seven-inch electrostatic-focus and electrostatic-deflection cathode-ray tube with tight-tolerance construction.
Medium-shell Diheptal 12-contact CRT base
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Published Du Mont ratings and characteristics retained from the supplied source.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Heater Voltage
6.3 V
Heater Current
600 mA
DeflectionMethod
Electrostatic
FocusingMethod
Electrostatic
ScreenDiagonal
7 in
Data set 02
Published operating points and test conditions from this source.
Heater Voltage
6.3 V
Heater Current
600 mA
FocusingMethod
Electrostatic
DeflectionMethod
Electrostatic
Phosphor
P1 green, medium persistence
MinimumUsefulScreen
6.25 in
PatternDistortionMaximum
2.5 %
DeflectionFactorUniformityMaximum
3 %
ModulationMaximum
37 V
BeamCurrent=25uA
LineWidthMaximum
0.022 in
BeamCurrent=25uA
Grid1CircuitResistanceMaximum
1.5 Mohm
Anode3VoltageMaximum
8800 V
Anode2VoltageMaximum
4400 V
Anode3ToAnode2VoltageRatioMaximum
2
Anode1FocusVoltageMaximum
1375 V
Grid1NegativeBiasMagnitudeMaximum
220 V
HeaterCathodeVoltageMaximum
200 V
PeakVoltageAnode2ToDeflectionPlate
825 V
Anode3Voltage
4000 V
Anode2Voltage
2000 V
Anode1VoltageForFocus
380 to 620 V
Grid1VoltageForCutoff
-45 to -75 V
DeflectionFactorD1D2
81 to 101 V/in
DeflectionFactorD3D4
67 to 83 V/in