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

Specialized - Cathode Ray ·CathodeRay

2FP4

Small oscilloscope and monitor cathode-ray tube in the 2FP family. The database record associates it with electrostatic focusing and deflection, but no separate manufacturer artifact is attached for this screen variant.

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

Description

from JEDEC release #3011, Oct. 31, 1960 RAYONIC® 2FP1 CATHODE RAY TUBE OSCILLOSCOPE AND MONITOR TUBE Focusing Method ... e LIECTOSTATIC Deflecting Method ... ...Electrostatic Phosphor ... SRR o|

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®

    2

    RAYONIC® 2FP1 CATHODE RAY TUBE OSCILLOSCOPE AND MONITOR TUBE

  • Heater VOIAZE ...t smsssssmsssssssssssssmsssssssmssssssmsmsssesmnenenele

    3

    Heater VOIAZE ...t smsssssmsssssssssssssmsssssssmssssssmsmsssesmnenenele 3. VOIS

  • Heater Current [1]

    600 mA

    Heater Current .. 0.6 = 10% Amperes

  • Heater Current [2]

    10 A

    Heater Current .. 0.6 = 10% Amperes

  • Grid #

    1

    Grid #1 to all other electrodes ........ . S ST

  • Minimum Useful Screen Dlameter

    1347

    Minimum Useful Screen Dlameter 1347

  • Positive voltage on D1 deflects beam approx. toward pin #

    3

    Positive voltage on D1 deflects beam approx. toward pin #3

  • Positive voltage on D3 deflects beam approx. toward pin #

    5

    Positive voltage on D3 deflects beam approx. toward pin #5

  • Anode Contact is on same side as Pin #

    3

    Anode Contact is on same side as Pin #3

  • Anode # [1]

    1 V

    Anode #1 (Focusmg Electrode) Voltage 1200 Volts

  • Anode # [2]

    1200 V

    Anode #1 (Focusmg Electrode) Voltage 1200 Volts

  • Grid #

    1

    Grid #1 (G1) Voltage

  • Peak Voltage between Anode # [1]

    2 V

    Peak Voltage between Anode #2 andanydeflectmg plate.........550 Volts

  • Peak Voltage between Anode # [2]

    550 V

    Peak Voltage between Anode #2 andanydeflectmg plate.........550 Volts

  • Spot Position, undeflected (note [1]

    1 mm

    Spot Position, undeflected (note 1) .. sy 10 Max, mm

  • Spot Position, undeflected (note [2]

    10 mm

    Spot Position, undeflected (note 1) .. sy 10 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

  • Gl Voltage

    3.5

    Gl Voltage 3.5 max % of A2 Voltage

  • 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 Elec. Volt. (Al) [1]

    200 V

    Focusing Elec. Volt. (Al) 200 to 350 300 to 525 400 to 700 Volts

  • Focusing Elec. Volt. (Al) [2]

    350 V

    Focusing Elec. Volt. (Al) 200 to 350 300 to 525 400 to 700 Volts

  • Focusing Elec. Volt. (Al) [3]

    300 V

    Focusing Elec. Volt. (Al) 200 to 350 300 to 525 400 to 700 Volts

  • Focusing Elec. Volt. (Al) [4]

    525 V

    Focusing Elec. Volt. (Al) 200 to 350 300 to 525 400 to 700 Volts

  • Focusing Elec. Volt. (Al) [5]

    400 V

    Focusing Elec. Volt. (Al) 200 to 350 300 to 525 400 to 700 Volts

  • Focusing Elec. Volt. (Al) [6]

    700 V

    Focusing Elec. Volt. (Al) 200 to 350 300 to 525 400 to 700 Volts

  • Gl Voltage (Note [1]

    2 V

    Gl Voltage (Note 2) —20 to —35 —30 to —52 —-40 to —70 Volts

  • Gl Voltage (Note [2]

    -20 V

    Gl Voltage (Note 2) —20 to —35 —30 to —52 —-40 to —70 Volts

  • Gl Voltage (Note [3]

    -35 V

    Gl Voltage (Note 2) —20 to —35 —30 to —52 —-40 to —70 Volts

  • Gl Voltage (Note [4]

    -30 V

    Gl Voltage (Note 2) —20 to —35 —30 to —52 —-40 to —70 Volts

  • Gl Voltage (Note [5]

    -52 V

    Gl Voltage (Note 2) —20 to —35 —30 to —52 —-40 to —70 Volts

  • Gl Voltage (Note [6]

    -40 V

    Gl Voltage (Note 2) —20 to —35 —30 to —52 —-40 to —70 Volts

  • Gl Voltage (Note [7]

    -70 V

    Gl Voltage (Note 2) —20 to —35 —30 to —52 —-40 to —70 Volts

  • Deflection Factor D1-D2 [1]

    51 V

    Deflection Factor D1-D2 51 to 69 76 to 103 102 to H8 Volts DC/in

  • Deflection Factor D1-D2 [2]

    69 V

    Deflection Factor D1-D2 51 to 69 76 to 103 102 to H8 Volts DC/in

  • Deflection Factor D1-D2 [3]

    76 V

    Deflection Factor D1-D2 51 to 69 76 to 103 102 to H8 Volts DC/in

  • Deflection Factor D1-D2 [4]

    103 V

    Deflection Factor D1-D2 51 to 69 76 to 103 102 to H8 Volts DC/in

  • Deflection Factor D1-D2 [5]

    102 V

    Deflection Factor D1-D2 51 to 69 76 to 103 102 to H8 Volts DC/in

  • Deflection Factor D3-D4 [1]

    29 V

    Deflection Factor D3-D4 29 o 39 44 to 59 58to0 78 Volts DC/in

  • Deflection Factor D3-D4 [2]

    39 V

    Deflection Factor D3-D4 29 o 39 44 to 59 58to0 78 Volts DC/in

  • Deflection Factor D3-D4 [3]

    44 V

    Deflection Factor D3-D4 29 o 39 44 to 59 58to0 78 Volts DC/in

  • Deflection Factor D3-D4 [4]

    59 V

    Deflection Factor D3-D4 29 o 39 44 to 59 58to0 78 Volts DC/in

  • Deflection Factor D3-D4 [5]

    58 V

    Deflection Factor D3-D4 29 o 39 44 to 59 58to0 78 Volts DC/in

  • Deflection Factor D3-D4 [6]

    78 V

    Deflection Factor D3-D4 29 o 39 44 to 59 58to0 78 Volts DC/in

  • 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 tube shielded and deflecting electrodes connected to Anode (A2).

  • Published value

    2

    2. For visual extinction of undeflected focused spor.

  • Published value

    3

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

  • Published value

    4 in

    4 INCHES LONG ALL DIMENSIONS IN INCHES