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5CTP1

Five-inch dual-beam oscilloscope CRT with electrostatic focusing and deflection and a multiband post-accelerator. Each beam is independently controlled except for common post-acceleration, enabling simultaneous waveform comparison.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 2
Base: -
Socket code: B12A
Base pins: -
Nominal heater: 6.3 V / 600 mA

Description

The ETC 5CTP1 is a dual-beam electrostatic-focus and electrostatic-deflection cathode-ray tube with a multiband post-accelerator. Each beam is independently controlled except for common post-acceleration.

Socket description

Duodecal 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B12A
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

2 physical sections, with 1 unique section. The remaining sections have identical specifications.

Section 1

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Representative row for identical electron-gun sections.

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

1961 Electronic Tube Corp

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

Heater voltage
6.3 V
Heater current nominal
600 mA
Maximum post-accelerator voltage
5600 V
Maximum accelerator voltage
2200 V
Maximum focusing voltage
1500 V
Maximum negative grid-1 bias magnitude
200 V
Maximum positive grid-1 bias
0 V
Maximum heater-to-cathode voltage magnitude
180 V
Typical post-accelerator voltage
6000 V
Typical accelerator voltage
2000 V
Typical focusing voltage
300 to 550 V
Typical grid-1 voltage
-70 to -30 V
Modulation factor maximum
50 V
Line width maximum
0.028 in
Deflection factor D1-D2 minimum
65 V/in
Deflection factor D1-D2 maximum
75 V/in
Deflection factor D3-D4 minimum
25 V/in
Deflection factor D3-D4 maximum
35 V/in

Construction

Focusing method
Electrostatic
Deflecting method
Electrostatic
Electron gun / beam count
2

Characteristic

Phosphor options
P1,P2,P7,P11