Data set 01
1938 Raytheon
Published operating points and test conditions from this source.
Cathode Ray
Application
Application
Oscilloscope_Display text
Specialized - Cathode Ray ·CathodeRay
Five-inch P7 cathode-ray display tube with electrostatic focusing and magnetic deflection, using an special-purpose screen for visual or instrument display.
5-inch radar cathode-ray tube with electrostatic focus, magnetic deflection, and long-persistence P7 screen.
International Octal
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
Cathode-ray display/scanning system; published focusing, deflection and high-voltage data retained as parameters.
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.
Application
Oscilloscope_Display text
Data set 02
Published operating points and test conditions from this source.
Focusing method
1 code
Electrostatic
Deflection method
1 code
Magnetic
Minimum useful screen
100 in
Accelerator voltage maximum
10000 V
Accelerator voltage
7000 V
Grid No. 1 voltage
-
Published range -72 to -28 V
Grid No. 1 negative bias maximum
200 V
Data set 03
Published operating points and test conditions from this source.
Focusing method
Electrostatic
Deflection method
Magnetic
Heater voltage
6.3 V
Heater current
600 mA
Fluorescence
Blue-white / yellow afterglow
Persistence
Long
Line width maximum
0.4 mm
Phosphor
P7
Phosphor construction
Non-aluminized P7
Application
Oscilloscope / instrument / special-purpose display
Anode voltage maximum
11000 V
Focus-electrode voltage range maximum
-550 to +1100 V
Grid-2 voltage maximum
770 V
Grid-1 negative-bias maximum
-200 V
Grid-1 positive-bias maximum
0 V
Peak heater-cathode voltage maximum
200 V
Typical anode voltage
7000 V
Typical focus voltage range
0 to +250 V
Typical grid-2 voltage
300 V
Grid cutoff range
-33 to -77 V
Grid-1 circuit resistance maximum
1.5 Mohm