NK4000 Mini Optical Time Domain Reflectometer (OTDR)
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Description
The NK4000 Mini PRO Series Optical Time Domain Reflectometer (OTDR) features a 4.3-inch capacitive full-touch screen with multi-touch support. It integrates 12 major functions, including Auto OTDR, Expert OTDR, Event Map, Optical Power Meter, RJ45 Cable Tracing, and more. With PC-level file management, it meets diverse testing requirements across multiple application scenarios.
The OTDR offers a maximum dynamic range of up to 26 dB, enabling accurate testing up to 100 km. Equipped with 8 GB internal memory, it can store over 200,000 test traces. A 4000 mAh high-density lithium polymer battery with intelligent power management delivers over 8 hours of continuous operation at high brightness and supports power bank charging and operation.
The device includes powerful built-in analysis software, providing accurate and reliable data for field technicians.
The NK4000 Series is designed to measure fiber length, attenuation, splice quality, and other parameters. It is widely used in FTTH deployments, metropolitan area networks, secondary backbone networks, as well as fiber optic cable manufacturing, installation, maintenance, and emergency repair testing.
Main Functions
- Auto OTDR
- Expert OTDR
- Event Map
- Optical Power Meter
- Visual Fault Locator (VFL)
- Stable Light Source
- Optical Loss Test
- RJ45 Wire Sequence Test
- RJ45 Cable Length Test
- RJ45 Digital Cable Tracing + Remote Identifier
- File Management
- System Settings
- Flashlight
Technical Specifications
OTDR Specifications
| Model | NK4000S | NK4000D | NK4000F1 | NK4000F2 | NK4000T |
|---|---|---|---|---|---|
| Optical Test | – | With live fiber | With live fiber | With live fiber | With live fiber |
| Test Wavelength | 1550 nm | 1310 / 1550 nm | 1310 nm | 1550 nm | 1610 nm |
| Fiber Type | G.652 Single-mode Fiber | ||||
| Dynamic Range | 24 dB | 26 / 24 dB | 26 dB | 24 dB | 22 dB |
| Event Dead Zone | 2.5 m | ||||
| Attenuation Dead Zone | 8 m | ||||
| Measurement Range | 500 m / 1 / 2 / 4 / 8 / 16 / 32 / 64 / 100 km | ||||
| Pulse Width | 3 ns ~ 20 µs | ||||
| Distance Accuracy | ±(1 m + sampling interval + 0.005% × test distance) | ||||
| Linearity | ≤0.05 dB/dB | ||||
| Sampling Points | 16k ~ 128k | ||||
| Loss Resolution | 0.001 dB | ||||
| Optical Connector | FC/UPC (SC, ST interchangeable) | ||||
Optical Power Meter
| Wavelength Range | 800 ~ 1700 nm |
| Calibrated Wavelengths | 850 / 980 / 1300 / 1310 / 1490 / 1550 / 1625 / 1650 nm |
| Measurement Range | -70 to +10 dBm (optional) / -50 to +26 dBm (standard) |
| Resolution | 0.01 dB |
| Uncertainty | ±5% |
| Connector | Universal FC / SC / ST |
General Specifications
| Display | 4.3″ 800×480 IPS TFT-LCD, capacitive touch |
| Battery | 3.7 V 4000 mAh Li-ion Polymer |
| Battery Life | Standby ＞20 h; Continuous testing ＞12 h |
| Storage | 8 GB internal, ≥200,000 records |
| Interface | USB Type-C |
| Weight | ≤0.5 kg (with battery) |
| Dimensions | 173 × 109 × 45 mm |
Notes
- NK4000F1: Supports live fiber testing with 1490 / 1550 nm signals ≤ -5 dBm
- NK4000F2: Supports live fiber testing with 1310 / 1490 nm signals ≤ -5 dBm
- NK4000T: Supports live fiber testing with 1310 / 1490 / 1550 nm signals ≤ 0 dBm
