NK4000D Fiber Optic Tester Breakpoint Finder Fault Pass-Through Detection

Mini-Pro OTDR Optical Time-Domain Reflectometer
Model: NK4000S, NK4000D, NK4000F (with optical testing), NK4000T (with optical testing)
Test wavelengths:
NK4000S: 1550 nm
NK4000D: 1310/1550 nm
NK4000F: 1550 nm
NK4000T: 1610 nm
Fibre Type: G.652 single-mode fibre
Dynamic Range:
NK4000S: 24 dB
NK4000D: 26/24 dB
NK4000F: 24 dB
NK4000T: 22 dB
Event Blind Zone: 2.5 m
Attenuation Blind Zone: 8 m
Measurement Range: 500 m / 1 km / 2 km / 4 km / 8 km / 16 km / 32 km / 64 km / 100 km
Pulse Width: 3 ns to 20 µs
Distance Measurement Accuracy: ±(1 m + sampling interval + 0.005% × test distance)
Linearity: ±0.05 dB/dB
Number of sampling points: 16k–128k
Sampling resolution: 0.05 m–8 m
Attenuation resolution: 0.001 dB
Attenuation threshold: 0.20 dB
Distance resolution: 0.001 m
Refractive index: 1.00000–2.00000
Reflection accuracy: ±3 dB
File format: SOR standard file format
Attenuation measurement mode: 4-point method/5-point method
Laser safety class: Class 2
Optical connector: FC/UPC (interchangeable with SC, ST)
Real-time refresh rate: 3 Hz (typical)
Multitasking: Supported
Optical Power Meter
Wavelength Range: 800 nm to 1700 nm
Calibration Wavelengths: 850/980/1300/1310/1490/1550/1625/1650 nm
Measurement Range: -70 dBm to +10 dBm (optional) / -50 dBm to +26 dBm (standard)
Resolution: 0.01 dB
Uncertainty: ±5%
Frequency Recognition: CW/270/330/1k/2kHz
Optical Connectors: Universal FC/SC/ST
Wavelength Recognition: Supported
Stable Light Source
Output Wavelength: Matches OTDR output wavelength
Laser Type: FP-LD
Output Power: ≥-5 dBm (adjustable)
Stability: CW, ±0.5 dB/15 min (tested after 15-minute warm-up following power-up)
Optical connector: FC/UPC (interchangeable with SC and ST)
Output mode: 270/330/1k/2kHz
Wavelength identification: Supported