Subheading 8525.81 covers only high-speed television cameras, digital cameras and video camera recorders having one or more of the following characteristics :
- writing speed exceeding 0.5 mm per microsecond;
- time resolution 50 nanoseconds or less;
- frame rate exceeding 225,000 frames per second.
2. In respect of subheading 8525.82, radiationhardened or radiation-tolerant television cameras, digital cameras and video camera recorders are designed or shielded to enable operation in a high-radiation environment. These cameras are designed to withstand a total radiation dose of at least 50 × 103 Gy(silicon) (5 × 106 RAD (silicon)), without operational degradation.
3. Subheading 8525.83 covers night vision television cameras, digital cameras and video camera recorders which use a photocathode to convert available light to electrons, which can be amplified and converted to yield a visible image. This subheading excludes thermal imaging cameras (generally subheading 8525.89).