Specialized - Cathode Ray ·CathodeRay
Philips or Mullard oscillography CRT with electrostatic beam control and a greenish-yellow long-persistence screen. Its lingering trace is intended for waveform measurements and instrument displays requiring extended visual retention.
Cathode-ray oscilloscope tube. The source provides CRT heater, focusing/deflection, capacitance, scan/sensitivity and operating data where published.
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
Post-accelerated CRT for oscillography. Screen variant: green-yellow, long persistence.
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
Published heater rating
Heater current
300 mA
Published heater rating
Cathode capacitance
6 pF
OscilloscopeCRT
Grid No.1 capacitance
4.6 pF
OscilloscopeCRT
D1-pair capacitance
1.9 pF
OscilloscopeCRT
D2-pair capacitance
2.5 pF
OscilloscopeCRT
Data set 02
Published operating points and test conditions from this source.
Final anode voltage
2000 V
Published datasheet value
Post-acceleration voltage
4000 V
Published datasheet value
Deflection type
Double electrostatic symmetric
Published datasheet value
Focusing
Electrostatic
Published datasheet value
Grid No.1 to all capacitance
4.6 pF
Published datasheet value
Cathode to all capacitance
6 pF
Published datasheet value
Useful screen diameter
90 mm
Published datasheet value
Screen fluorescence
Green for DG; blue for DB; double-layer for DP; greenish-yellow for DR
Published datasheet value
Persistence
Varies by screen designation
Published datasheet value