Gigahertz Optik
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| Brand | Gigahertz Optik |
|---|---|
| Origin | Shanghai, China |
| Distributor Type | Authorized Distributor |
| Country of Manufacture | Germany (designed & calibrated in Germany |
| Model | BTS256-EF |
| Measurement Range | 1–199,999 lx (illuminance), 360–830 nm (spectral range) |
| Spectral Bandwidth | 10 nm (CIE 214-compliant adaptive optical bandwidth correction) |
| Cosine Error | ≤3% (f₂) |
| Flicker Frequency Range | 0.25 Hz – 200 kHz |
| Integration Time | 5.2–30,000 ms |
| ADC Resolution | 12-bit |
| Power Supply | 5 V DC / 450 mA via USB |
| Temperature Compensation | Integrated thermistor for photodiode and spectrometer units |
| Calibration Uncertainty | ±2.2% (luminance), f₁′ ≤3% (with spectral correction), stray light <6×10⁻⁴ (LED-specific) |