Tube-number record
D18-190GH/127
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ClassInstrument Cathode-Ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 240 mA
Construction
Primary TypeDisplay / CRT
Envelope18 cm diagonal rectangular flat face
Base MaterialGlass
Sections1
Filament / Heater
MaterialOxide
Warm-up Time5s
Heater NotesIndirect heating by AC or DC
Absolute Maximum Ratings
Plate Voltage18000 V
Grid 2 Voltage3300 V
Grid 1 Voltage-200 V
H-C Voltage125 V
Audio Performance
Key Features
- Domed mesh post-deflection acceleration
- Internal magnetic lens system for correction
- Quick-heating cathode
- Internal graticule type 127
- Short overall length
- Bandwidth up to 100 MHz
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation (16kV) | 16000 V | — | — | — | — |
Application Notes
The tube features internal magnetic correction for orthogonality between x- and y-traces, spot shaping (astigmatism) and eccentricity calibration. Not to be connected in series with other tubes.
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