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SC4014

Dual-gun Sylvania cathode-ray instrument tube with high-voltage post-acceleration to 15 kV, designed for simultaneous two-trace waveform or measurement display.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 600 mA

Description

Seven-inch flat-face two-gun CRT with electrostatic focus/deflection, linear post-acceleration, aluminized screen, and mu-metal potting.

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

Max plate voltage: 15000 V

Ratings and characteristics promoted from the supplied Sylvania source where explicitly published.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
600 mA
GunCount
2

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

Heater voltage
6.3 V
Heater current for two guns in parallel
540 mA to 660 mA
Anode No. 3 voltage maximum
15000 V
Anode No. 2 voltage maximum
4500 V
Anode No. 1 focus-electrode voltage maximum
1550 V
Grid No. 1 negative bias maximum
-220 V
Grid No. 1 positive bias maximum
0 V
Grid No. 1 positive peak maximum
2 V
Peak Anode No. 2 to deflecting-plate voltage maximum
550 V
Peak heater-cathode voltage maximum
200 V
Modulation maximum at Anode No. 3 current 25 uA
36 V
Anode No. 3 voltage
12400 V
Anode No. 2 voltage
2900 V
Grid No. 1 cutoff voltage
-65 to -35 V
Anode No. 1 focus voltage
750 to 1050 V

Characteristic

Deflection factor D1-D2
116 to 134 V/in
Deflection factor D3-D4
116 to 134 V/in
Line width maximum
0.02 in
Useful scan D1-D2 minimum
2.625 in
Useful scan D3-D4 minimum
2.625 in
Maximum Anode No. 3 current at cutoff
60 uA
Interaction factor
0.00005 in/V