IMAGE DISSECTOR
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BrandITT Industrial Laboratories
ClassImaging Tube
Construction
Primary TypePhotoemissive camera tube
Envelope3-inch or 1-inch diameter
SectionsPhotocathode, Electron Multiplier
Filament / Heater
Absolute Maximum Ratings
Cathode Current0.001 mA
Audio Performance
Key Features
- High resolution
- Excellent linearity over wide dynamic range
- Variable scan rates (stopped, random access)
- Operable with rapid camera panning
- Simplicity of design (no electron gun)
- Rugged construction
- Fast response (nanoseconds)
- Background noise limited operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard TV Scan Rates (3-inch photocathode, 5-mil aperture) | - | - | - | 2.6 | - |
| Slow Scan 8-cps (1-inch photocathode, 1-mil aperture) | - | - | - | 2.6 | - |
Application Notes
Limits usage to high illumination levels or slow scan rates. S/N ratio is proportional to square root of cathode current density, aperture area, and dwell time. Photocathode dark current is typically negligible (less than 10^-8 mA/cm^2 for S-1 cathodes).
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