Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Cathode Ray ·CathodeRay

3XP7

Electrostatically focused and deflected P7 cathode-ray instrument tube for waveform display, with a 6.3 V heater, adjustable focusing, and manufacturer-specified deflection sensitivity.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 600 mA

Description

Focusing Method Electrostatic DEFLECTION SENSITIVITY—HIGH Deflecting Method Electrostatic LENGTH—SHORT Phosphor Number . Pi MONOACCELERATOR Fluorescent Color ... Green FACE PLATE—CLEAR, CYLINDRICAL Phosphorescent Color None DEFLECTION—ELECTROSTATIC

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
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

No fixed ratings are recorded for this section.

CRT section; maximum anode voltage 2750 V and capacitances 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

1960 Waterman Products

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • RAYONIC®

    3

    RAYONIC® 3XP1 CATHODE RAY TUBE QUICK REFERENCE DATA

  • Heater Voitage

    6.3 V

    Heater Voitage ...... 6.3 Volts

  • Heater Current ... ettt e e e [1]

    600 mA

    Heater Current ... ettt e e e 0.6 =10% Amperes

  • Heater Current ... ettt e e e [2]

    10 A

    Heater Current ... ettt e e e 0.6 =10% Amperes

  • Cathode to all other electrodes

    5.2

    Cathode to all other electrodes 5.2 puf

  • Grid # [1]

    1

    Grid # 1 to all other electrodes 5.7 ppuf

  • Grid # [2]

    5.7

    Grid # 1 to all other electrodes 5.7 ppuf

  • Positive voliage on D1 deflects beam approximately toward pin

    3

    Positive voliage on D1 deflects beam approximately toward pin 3

  • Positive voltage on D3 deflects beam approximately toward pin

    35

    Positive voltage on D3 deflects beam approximately toward pin 35

  • DI1-D2 are nearest to the screen (

    37

    DI1-D2 are nearest to the screen (37 Dimension)

  • Anode Voltage (A2)

    2750 V

    Anode Voltage (A2) 2750 Volts DC

  • Anode (A2) Input

    6

    Anode (A2) Input .. 6 Watts

  • Anode # [1]

    1 V

    Anode # 1 (Focusing Electrode) Voltage . 1100 Volts

  • Anode # [2]

    1100 V

    Anode # 1 (Focusing Electrode) Voltage . 1100 Volts

  • Grid #

    1

    Grid #1 (G1) Voltage

  • Peak voltage between Anode # [1]

    2 V

    Peak voltage between Anode #2 and any deflecting plate ... .......... 550 Volts

  • Peak voltage between Anode # [2]

    550 V

    Peak voltage between Anode #2 and any deflecting plate ... .......... 550 Volts

  • Focusing Electrode (A1) current for any operating condition ........................... ~ [1]

    -15 A

    Focusing Electrode (A1) current for any operating condition ........................... ~-15to +10 pAmps

  • Focusing Electrode (A1) current for any operating condition ........................... ~ [2]

    10 A

    Focusing Electrode (A1) current for any operating condition ........................... ~-15to +10 pAmps

  • Spot Position, Undeflected (Note [1]

    1 mm

    Spot Position, Undeflected (Note 1) 7.0 Max. mm

  • Spot Position, Undeflected (Note [2]

    7 mm

    Spot Position, Undeflected (Note 1) 7.0 Max. mm

  • Al Voltage [1]

    20

    Al Voltage 20% to 35% of A2 Voltage

  • Al Voltage [2]

    35

    Al Voltage 20% to 35% of A2 Voltage

  • G1 Voltage [1]

    3.375

    G1 Voltage 3.375 max% of A2 Voltage (Note 2)

  • G1 Voltage [2]

    2

    G1 Voltage 3.375 max% of A2 Voltage (Note 2)

  • Anode Voltage (A2) [1]

    1000 V

    Anode Voltage (A2) 1000 1500 2000 Volts

  • Anode Voltage (A2) [2]

    1500 V

    Anode Voltage (A2) 1000 1500 2000 Volts

  • Anode Voltage (A2) [3]

    2000 V

    Anode Voltage (A2) 1000 1500 2000 Volts

  • Focusing Electrode Voltage (Al) [1]

    200 V

    Focusing Electrode Voltage (Al) 200 to 350 300 to 525 400 to 700 | Volts

  • Focusing Electrode Voltage (Al) [2]

    350 V

    Focusing Electrode Voltage (Al) 200 to 350 300 to 525 400 to 700 | Volts

  • Focusing Electrode Voltage (Al) [3]

    300 V

    Focusing Electrode Voltage (Al) 200 to 350 300 to 525 400 to 700 | Volts

  • Focusing Electrode Voltage (Al) [4]

    525 V

    Focusing Electrode Voltage (Al) 200 to 350 300 to 525 400 to 700 | Volts

  • Focusing Electrode Voltage (Al) [5]

    400 V

    Focusing Electrode Voltage (Al) 200 to 350 300 to 525 400 to 700 | Volts

  • Focusing Electrode Voltage (Al) [6]

    700 V

    Focusing Electrode Voltage (Al) 200 to 350 300 to 525 400 to 700 | Volts

  • Grid # [1]

    1

    Grid # 1 Voltage (Note 2) —34 max. —51 max. —67.5 max. | Volis

  • Grid # [2]

    2

    Grid # 1 Voltage (Note 2) —34 max. —51 max. —67.5 max. | Volis

  • Grid # [3]

    -34

    Grid # 1 Voltage (Note 2) —34 max. —51 max. —67.5 max. | Volis

  • Grid # [4]

    -51

    Grid # 1 Voltage (Note 2) —34 max. —51 max. —67.5 max. | Volis

  • Grid # [5]

    -67.5

    Grid # 1 Voltage (Note 2) —34 max. —51 max. —67.5 max. | Volis

  • Deflection Factor D1-D2 [1]

    3410 V

    Deflection Factor D1-D2 3410 46 51 to 69 68 to 92 Volts DC/Inch

  • Deflection Factor D1-D2 [2]

    46 V

    Deflection Factor D1-D2 3410 46 51 to 69 68 to 92 Volts DC/Inch

  • Deflection Factor D1-D2 [3]

    51 V

    Deflection Factor D1-D2 3410 46 51 to 69 68 to 92 Volts DC/Inch

  • Deflection Factor D1-D2 [4]

    69 V

    Deflection Factor D1-D2 3410 46 51 to 69 68 to 92 Volts DC/Inch

  • Deflection Factor D1-D2 [5]

    68 V

    Deflection Factor D1-D2 3410 46 51 to 69 68 to 92 Volts DC/Inch

  • Deflection Factor D1-D2 [6]

    92 V

    Deflection Factor D1-D2 3410 46 51 to 69 68 to 92 Volts DC/Inch

  • Deflection Factor D3-D4 [1]

    14 V

    Deflection Factor D3-D4 14 to 19 2110 28.5 2B to 38 Volts DC/Inch

  • Deflection Factor D3-D4 [2]

    19 V

    Deflection Factor D3-D4 14 to 19 2110 28.5 2B to 38 Volts DC/Inch

  • Deflection Factor D3-D4 [3]

    2110 V

    Deflection Factor D3-D4 14 to 19 2110 28.5 2B to 38 Volts DC/Inch

  • Deflection Factor D3-D4 [4]

    28.5 V

    Deflection Factor D3-D4 14 to 19 2110 28.5 2B to 38 Volts DC/Inch

  • Deflection Factor D3-D4 [5]

    2 V

    Deflection Factor D3-D4 14 to 19 2110 28.5 2B to 38 Volts DC/Inch

  • Deflection Factor D3-D4 [6]

    38 V

    Deflection Factor D3-D4 14 to 19 2110 28.5 2B to 38 Volts DC/Inch

  • Grid # [1]

    1

    Grid #1 Circuit Resistance 1.5 Megohms

  • Grid # [2]

    1.5

    Grid #1 Circuit Resistance 1.5 Megohms

  • Resistance in any Deflecting Electrode Circuit (Note [1]

    3

    Resistance in any Deflecting Electrode Circuit (Note 3) 1.0 Megohms

  • Resistance in any Deflecting Electrode Circuit (Note [2]

    1

    Resistance in any Deflecting Electrode Circuit (Note 3) 1.0 Megohms

  • Published value

    1

    1. With deflecting electrodes connected to Anode (A2).

  • Published value

    2

    2. For visual extinction of undeflected focused spot.

  • Published value

    3

    3. The resistance in each deflecting electrode circuit should be approximately equal.