Tube-number record
56875
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BrandProfessional Display Systems B.V.
ClassInstrument Cathode-Ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 100 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular flat face
SectionsSingle beam
Filament / Heater
Warm-up Time7s
Heater NotesIndirectly heated cathode, AC or DC
Absolute Maximum Ratings
Plate Voltage18000 V
Plate Dissipation0.008 W
Grid 2 Voltage2500 V
Grid 1 Voltage-200 V
H-C Voltage125 V
Audio Performance
Key Features
- Domed mesh post-deflection acceleration
- Internal permanent magnetic correction system
- Internal graticule type 123
- Low heater power consumption
- High precision writing speed
- Metal-backed phosphor
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 10 kV Low Power Operation | 10000 V | — | — | — | — |
| 16.5 kV High Writing Speed Operation | 16500 V | — | — | — | — |
Application Notes
Recommended for compact oscilloscopes with up to 100 MHz bandwidth. Mu-metal shielding recommended for optimum performance. Deflection plates must be operated symmetrically.
Datasheets
Datasheet: 56875.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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