Specialized - Cathode Ray ·CathodeRay
English Electric cathode-ray instrument tube with electrostatic beam control and precision deflection, intended for oscillographic or measurement display with screen characteristics designated by type T980N.
Five-inch wide-band high-speed oscilloscope cathode-ray tube with electrostatic focus and deflection, post-deflection acceleration, and anode modulation electrodes. N screen
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
No fixed ratings are recorded for this section.
Maximum final-anode/PDA voltage mapped to MaxPlateVoltage.
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
300 mA
Maximum anode 4 voltage
3.3 kV
Maximum anode 3/anode 1 voltage
3.3 kV
Maximum anode 2 voltage
1.5 kV
Typical PDA/screen voltage
12 kV
Screen characteristic
N screen
Grid to all other electrodes capacitance
6.1 pF