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| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | SS-120 |
| Spectral Range | 635–1100 nm |
| Spectral Sampling Interval | 1.0 nm |
| Spectral Resolution | 3.0 nm |
| Spectral Accuracy | ±0.5 nm |
| Spectral Repeatability | ±0.2 nm |
| A/D Conversion | 14-bit |
| Signal-to-Noise Ratio | 1500:1 |
| Stray Light | ≤0.25% at 850 nm |
| Noise Level | ≤3 counts |
| Integration Time | 10 ms – 10 s |
| Linearity | <1% or 0.5% |
| Quantum Efficiency | >10% (λ < 1030 nm) |
| Radiometric Repeatability | <1% (λ < 1020 nm) |
| Cosine Response Error | ±5% at 75° zenith angle |
| Field of View | 25° or 150° (downward-facing configuration) |
| Operating Temperature | −20 to +70 °C |
| Relative Humidity | 0–100% RH |
| Power Consumption | 1 W (USB-powered) |
| Current Draw | 190 mA |
| Weight | 300 g |
| Dimensions | 89.3 × 50.8 × 38.1 mm (H × W × L) |
| Communication Interface | USB |
| Software Compatibility | Windows XP and later |
| Irradiance Calibration Uncertainty | ±5% |
| Temperature Coefficient | −0.1 ± 0.1 %/°C |
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